New Mountain Finance Corp

Notes to the Consolidated Financial Statements of

(in thousands, except share data)

Note 1. Formation and Business Purpose

New Mountain Finance Corporation (“NMFC” or the “Company”) is a Delaware corporation that was originally incorporated on June 29, 2010 and completed its initial public offering ("IPO") on May 19, 2011. NMFC is a closed-end, non-diversified management investment company that has elected to be regulated as a business development company (“BDC”) under the Investment Company Act of 1940, as amended (the “1940 Act”). NMFC has elected to be treated, and intends to comply with the requirements to continue to qualify annually, as a regulated investment company (“RIC”) under Subchapter M of the Internal Revenue Code of 1986, as amended (the “Code”). Since NMFC’s IPO, and through December 31, 2023, NMFC has raised approximately $966,859 in net proceeds from additional offerings of its common stock.

New Mountain Finance Advisers BDC, L.L.C. (the “Investment Adviser”) is a wholly-owned subsidiary of New Mountain Capital Group, L.P. (together with New Mountain Capital, L.L.C. and its affiliates, "New Mountain Capital") whose ultimate owners include Steven B. Klinsky, other current and former New Mountain Capital professionals and related vehicles and a minority investor. New Mountain Capital is a global investment firm with approximately $50 billion of assets under management and a track record of investing in the middle market. New Mountain Capital focuses on investing in defensive growth companies across its private equity, credit and net lease investment strategies. The Investment Adviser manages the Company's day-to-day operations and provides it with investment advisory and management services. The Investment Adviser also manages other funds that may have investment mandates that are similar, in whole or in part, to the Company's. New Mountain Finance Administration, L.L.C. (the "Administrator”), a wholly-owned subsidiary of New Mountain Capital, provides the administrative services necessary to conduct the Company's day-to-day operations.

The Company has established the following wholly-owned direct and indirect subsidiaries:

•New Mountain Finance Holdings, L.L.C. ("NMF Holdings") and New Mountain Finance DB, L.L.C. ("NMFDB"), whose assets are used to secure NMF Holdings’ credit facility and NMFDB’s credit facility, respectively;

•New Mountain Finance SBIC, L.P. ("SBIC I") and New Mountain Finance SBIC II, L.P. ("SBIC II"), who have received licenses from the U.S. Small Business Administration ("SBA") to operate as small business investment companies ("SBICs") under Section 301(c) of the Small Business Investment Act of 1958, as amended (the "1958 Act"), and their general partners, New Mountain Finance SBIC G.P., L.L.C. ("SBIC I GP"), and New Mountain Finance SBIC II G.P., L.L.C. ("SBIC II GP"), respectively;

•NMF Ancora Holdings, Inc. ("NMF Ancora"), NMF QID NGL Holdings, Inc. ("NMF QID"), NMF YP Holdings, Inc. ("NMF YP"), NMF Permian Holdings, LLC ("NMF Permian"), NMF HB, Inc. ("NMF HB"), NMF TRM, LLC ("NMF TRM"), NMF Pioneer, Inc. ("NMF Pioneer") and NMF OEC, Inc. ("NMF OEC"), which are treated as corporations for U.S. federal income tax purposes and are intended to facilitate our compliance with the requirements to be treated as a RIC under the Code by holding equity or equity related investments in portfolio companies organized as limited liability companies (or other forms of pass-through entities); the Company consolidates these corporations for accounting purposes but the corporations are not consolidated for U.S. federal income tax purposes and may incur U.S. federal income tax expense as a result of their ownership of the portfolio companies; and

New Mountain Net Lease Corporation ("NMNLC") is a majority-owned consolidated subsidiary of the Company, which acquires commercial real estate properties that are subject to "triple net" leases and has elected to be treated, and intends to comply with the requirements to continue to qualify annually, as a real estate investment trust, or REIT, within the meaning of Section 856(a) of the Code.

NMFC is a BDC focused on providing direct lending solutions to U.S. upper middle market companies backed by private equity sponsors. The Company’s investment objective is to generate current income and capital appreciation through the sourcing and origination of senior secured loans and select junior capital positions, to growing businesses in defensive industries that offer attractive risk-adjusted returns. The Company’s investment approach leverages the deep sector knowledge and operating resources of New Mountain Capital.

Senior secured loans may include traditional first lien loans or unitranche loans. The Company invests a significant portion of its portfolio in unitranche loans, which are loans that combine both senior and subordinated debt, generally in a first-lien position. Because unitranche loans combine characteristics of senior and subordinated debt, they have risks similar to the risks associated with secured debt and subordinated debt. Certain unitranche loan investments may include “last-out” positions, which generally heighten the risk of loss. In some cases, the Company’s investments may also include equity interests.

NMFC primarily invests in senior secured debt of U.S. sponsor-backed, middle market companies. We define middle market companies as those with annual earnings before interest, taxes, depreciation, and amortization ("EBITDA") of $10 million to $200 million. The Company focuses on defensive growth businesses that generally exhibit the following characteristics: (i) acyclicality, (ii) sustainable secular growth drivers, (iii) niche market dominance and high barriers to competitive entry, (iv) recurring revenue and strong free cash flow, (v) flexible cost structures and (vi) seasoned management teams.

Similar to the Company, the investment objective of SBIC I and SBIC II is to generate current income and capital appreciation under the investment criteria used by the Company. However, SBIC I and SBIC II investments must be in SBA eligible small businesses. The Company’s portfolio may be concentrated in a limited number of industries. As of December 31, 2023, the Company’s top five industry concentrations were software, business services, healthcare, investment funds (which includes the Company's investments in its joint ventures) and education.

Note 2. Summary of Significant Accounting Policies

Basis of accounting—The Company’s consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States (“GAAP”). The Company is an investment company following accounting and reporting guidance in Accounting Standards Codification Topic 946, Financial Services—Investment Companies (“ASC 946”). The Company consolidates its wholly-owned direct and indirect subsidiaries: NMF Holdings, NMFDB, NMF Servicing, SBIC I, SBIC I GP, SBIC II, SBIC II GP, NMF Ancora, NMF QID, NMF YP, NMF Permian, NMF HB, NMF TRM, NMF Pioneer and NMF OEC and its majority-owned consolidated subsidiary: NMNLC. For majority-owned consolidated subsidiaries, the third-party equity interest is referred to as non-controlling interest. The net income attributable to non-controlling interests for such subsidiaries is presented as “Net increase (decrease) in net assets resulting from operations related to non-controlling interest” in the Company’s Consolidated Statements of Operations. The portion of shareholders' equity that is attributable to non-controlling interests for such subsidiaries is presented as “Non-controlling interest”, a component of total equity, on the Company’s Consolidated Statements of Assets and Liabilities.

The Company’s consolidated financial statements reflect all adjustments and reclassifications which, in the opinion of management, are necessary for the fair presentation of the results of operations and financial condition for all periods presented. All intercompany transactions have been eliminated. Revenues are recognized when earned and expenses when incurred. The financial results of the Company’s portfolio investments are not consolidated in the financial statements.

The Company’s consolidated financial statements are prepared in accordance with GAAP and pursuant to the requirements for reporting on Form 10-K and Article 6 or 10 of Regulation S-X. In the opinion of management, all adjustments, consisting solely of normal recurring accruals considered necessary for the fair presentation of financial statements have been included.

Investments—The Company applies fair value accounting in accordance with GAAP. Fair value is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. Investments are reflected on the Company’s Consolidated Statements of Assets and Liabilities at fair value, with changes in unrealized gains and losses resulting from changes in fair value reflected in the Company’s Consolidated Statements of Operations as “Net change in unrealized appreciation (depreciation) of investments” and realizations on portfolio investments reflected in the Company’s Consolidated Statements of Operations as “Net realized gains (losses) on investments”.

The Company values its assets on a quarterly basis, or more frequently if required under the 1940 Act. In all cases, the Company’s board of directors is ultimately and solely responsible for determining the fair value of the portfolio investments on a quarterly basis in good faith, including investments that are not publicly traded, those whose market prices are not readily available and any other situation where its portfolio investments require a fair value determination. Security transactions are accounted for on a trade date basis. The Company’s quarterly valuation procedures are set forth in more detail below:

(2)Investments for which indicative prices are obtained from various pricing services and/or brokers or dealers are valued through a multi-step valuation process, as described below, to determine whether the quote(s) obtained is representative of fair value in accordance with GAAP.

a. Bond quotes are obtained through independent pricing services. Internal reviews are performed by the investment professionals of the Investment Adviser to ensure that the quote obtained is representative of fair value in accordance with GAAP and, if so, the quote is used. If the Investment Adviser is unable to sufficiently validate the quote(s) internally and if the investment’s par value or its fair value exceeds the materiality threshold, the investment is valued similarly to those assets with no readily available quotes (see (3) below); and

b. For investments other than bonds, the Company looks at the number of quotes readily available and performs the following procedures:

i. Investments for which two or more quotes are received from a pricing service are valued using the mean of the mean of the bid and ask of the quotes obtained. The Company will evaluate the reasonableness of the quote, and if the quote is determined to not be representative of fair value, the Company will use one or more of the methodologies outlined below to determine fair value; and

ii. Investments for which one quote is received from a pricing service are validated internally. The investment professionals of the Investment Adviser analyze the market quotes obtained using an array of valuation methods (further described below) to validate the fair value. If the Investment Adviser is unable to sufficiently validate the quote internally and if the investment’s par value or its fair value exceeds the materiality threshold, the investment is valued similarly to those assets with no readily available quotes (see (3) below).

(3)Investments for which quotations are not readily available through exchanges, pricing services, brokers, or dealers are valued through a multi-step valuation process:

b. Preliminary valuation conclusions will then be documented and discussed with the Company’s senior management;

c. If an investment falls into (3) above for four consecutive quarters and if the investment’s par value or its fair value exceeds the materiality threshold, then at least once each fiscal year, the valuation for each portfolio investment for which the Company does not have a readily available market quotation will be reviewed by an independent valuation firm engaged by the Company’s board of directors; and

d. When deemed appropriate by the Company’s management, an independent valuation firm may be engaged to review and value investment(s) of a portfolio company, without any preliminary valuation being performed by the Investment Adviser. The investment professionals of the Investment Adviser will review and validate the value provided.

For investments in revolving credit facilities and delayed draw commitments, the cost basis of the funded investments purchased is offset by any costs/netbacks received for any unfunded portion on the total balance committed. The fair value is also adjusted for the price appreciation or depreciation on the unfunded portion. As a result, the purchase of a commitment not completely funded may result in a negative fair value until it is called and funded.

The values assigned to investments are based upon available information and do not necessarily represent amounts which might ultimately be realized, since such amounts depend on future circumstances and cannot be reasonably determined until the individual positions are liquidated. Due to the inherent uncertainty of determining the fair value of investments that do not have a readily available market value, the fair value of the Company’s investments may fluctuate from period to period and the fluctuations could be material.

See Note 3. Investments, for further discussion relating to investments.

New Mountain Net Lease Corporation

NMNLC was formed to acquire commercial real estate properties that are subject to "triple net" leases. NMNLC's investments are disclosed on the Company's Consolidated Schedule of Investments as of December 31, 2023.

On March 30, 2020, an affiliate of the Investment Adviser purchased directly from NMNLC 105,030 shares of NMNLC’s common stock at a price of $107.73 per share, which represented the net asset value per share of NMNLC at the date of purchase, for an aggregate purchase price of approximately $11,315. Immediately thereafter, NMNLC redeemed 105,030 shares of its common stock held by NMFC in exchange for a promissory note with a principal amount of $11,315 and a 7.0% interest rate, which was repaid by NMNLC to NMFC on March 31, 2020.

Below is certain summarized property information for NMNLC as of December 31, 2023:

(1)Excludes residual value in NM APP Canada Corp. due to tax withholding. As of December 31, 2023, NM APP Canada Corp. had a fair value of $7.

Collateralized agreements or repurchase financings—The Company follows the guidance in Accounting Standards Codification Topic 860, Transfers and Servicing—Secured Borrowing and Collateral (“ASC 860”), when accounting for transactions involving the purchases of securities under collateralized agreements to resell (resale agreements). These transactions are treated as collateralized financing transactions and are recorded at their contracted resale or repurchase amounts, as specified in the respective agreements. Interest on collateralized agreements is accrued and recognized over the life of the transaction and included in interest income. As of December 31, 2023 and December 31, 2022, the Company heldone collateralized agreement to resell with a cost basis of $30,000 and $30,000, respectively, and a fair value of $16,500 and $16,539, respectively. The collateralized agreement to resell is on non-accrual. The collateralized agreement to resell is guaranteed by a private hedge fund, PPVA Fund, L.P. The private hedge fund is currently in liquidation under the laws of the Cayman Islands. Pursuant to the terms of the collateralized agreement, the private hedge fund was obligated to repurchase the collateral from the Company at the par value of the collateralized agreement. The private hedge fund has breached its agreement to repurchase the collateral under the collateralized agreement. The default by the private hedge fund did not release the collateral to the Company, and therefore, the Company does not have full rights and title to the collateral. A claim has been filed with the Cayman Islands joint official liquidators to resolve this matter. The joint official liquidators have recognized the Company’s contractual rights under the collateralized agreement. The Company continues to exercise its rights under the collateralized agreement and continues to monitor the liquidation process of the private hedge fund. The fair value of the collateralized agreement to resell is reflective of the increased risk of the position.

Cash and cash equivalents—Cash and cash equivalents include cash and short-term, highly liquid investments. The Company defines cash equivalents as securities that are readily convertible into known amounts of cash and so near maturity that there is insignificant risk of changes in value. These securities have original maturities of three months or less. The Company didnot hold any cash equivalents as of December 31, 2023 and December 31, 2022.

Revenue recognition

Sales and paydowns of investments: Realized gains and losses on investments are determined on the specific identification method.

Interest and dividend income: Interest income, including amortization of premium and discount using the effective interest method, is recorded on the accrual basis and periodically assessed for collectability. Interest income also includes interest earned from cash on hand. Upon the prepayment of a loan or debt security, any prepayment penalties are recorded as part of interest income. The Company has loans and certain preferred equity investments in the portfolio that contain a payment-in-kind (“PIK”) interest or dividend provision. PIK interest and dividends are accrued and recorded as income at the contractual rates, if deemed collectible. The PIK interest and dividends are added to the principal or share balances on the capitalization dates and are generally due at maturity or when redeemed by the issuer. For the years ended December 31, 2023, December 31, 2022 and December 31, 2021, the Company recognized PIK and non-cash interest from investments of $33,594, $17,326 and $23,343, respectively, and PIK and non-cash dividends from investments of $27,409, $22,543 and $19,485, respectively.

Dividend income on common equity is recorded on the record date for private portfolio companies or on the ex-dividend date for publicly traded portfolio companies. Dividend income on preferred securities is recorded as dividend income on an accrual basis to the extent that such amounts are deemed collectible.

Non-accrual income: Investments are placed on non-accrual status when principal or interest payments are past due for 30 days or more and when there is reasonable doubt that principal or interest will be collected. Accrued cash and un-capitalized PIK interest or dividends are reversed when an investment is placed on non-accrual status. Previously capitalized PIK interest or dividends are not reversed when an investment is placed on non-accrual status. Interest or dividend payments received on non-accrual investments may be recognized as income or applied to principal depending upon management’s judgment of the ultimate collectability. Non-accrual investments are restored to accrual status when past due principal and interest is paid and, in management’s judgment, are likely to remain current.

Other income: Other income represents delayed compensation, consent or amendment fees, revolver fees, structuring fees, upfront fees and other miscellaneous fees received and are typically non-recurring in nature. Delayed compensation is income earned from counterparties on trades that do not settle within a set number of business days after the trade date. Other income may also include fees from bridge loans. The Company may from time to time enter into bridge financing commitments, an obligation to provide interim financing to a counterparty until permanent credit can be obtained. These commitments are short-term in nature and may expire unfunded. A fee is received by the Company for providing such commitments. Structuring fees and upfront fees are recognized as income when earned, usually when paid at the closing of the investment, and are non-refundable.

Interest and other financing expenses—Interest and other financing fees are recorded on an accrual basis by the Company. See Note 7. Borrowings, for details.

Deferred financing costs—The deferred financing costs of the Company consist of capitalized expenses related to the origination and amending of the Company’s borrowings. The Company amortizes these costs into expense over the stated life of the related borrowing. See Note 7. Borrowings, for details.

Deferred offering costs—The Company's deferred offering costs consist of fees and expenses incurred in connection with equity offerings and the filing of shelf registration statements. Upon the issuance of shares, offering costs are charged as a direct reduction to net assets. Deferred offering costs are included in other assets on the Company's Consolidated Statements of Assets and Liabilities.

Income taxes—The Company has elected to be treated, and intends to comply with the requirements to qualify annually, as a RIC under Subchapter M of the Code. As a RIC, the Company is not subject to U.S. federal income tax on the portion of taxable income and gains timely distributed to its stockholders.

To continue to qualify and be subject to tax treatment as a RIC, the Company is required to meet certain income and asset diversification tests in addition to timely distributing at least 90.0% of its investment company taxable income, as defined by the Code. Since U.S. federal income tax regulations differ from GAAP, distributions in accordance with tax regulations may differ from net investment income and realized gains recognized for financial reporting purposes.

Differences between taxable income and the results of operations for financial reporting purposes may be permanent or temporary in nature. Permanent differences are reclassified among capital accounts in the financial statements to reflect their tax character. Differences in classification may also result from the treatment of short-term gains as ordinary income for U.S. federal income tax purposes.

For U.S. federal income tax purposes, distributions paid to stockholders of the Company are reported as ordinary income, return of capital, long term capital gains or a combination thereof.

The Company will be subject to a 4.0% nondeductible U.S. federal excise tax on certain undistributed income unless the Company distributes, in a timely manner as required by the Code, an amount at least equal to the sum of (1) 98.0% of its respective net ordinary income earned for the calendar year and (2) 98.2% of its respective capital gain net income for the one-year period ending October 31 in the calendar year.

Certain consolidated subsidiaries of the Company are subject to U.S. federal and state income taxes. These taxable entities are not consolidated for U.S. federal income tax purposes and may generate income tax liabilities or assets from permanent and temporary differences in the recognition of items for financial reporting and U.S. federal income tax purposes.

For the year ended December 31, 2023, the Company recognized a total income tax expense of approximately $1,762 for the Company's consolidated subsidiaries. For the year ended December 31, 2023, the Company recorded current income tax expense of approximately $418 and deferred income tax provision of approximately $1,344. For the year ended December 31, 2022, the Company recognized a total income tax expense of approximately $9,299 for the Company's consolidated subsidiaries. For the year ended December 31, 2022, the Company recorded current income tax expense of approximately $825 and deferred income tax provision of approximately $8,474. For the year ended December 31, 2021, the Company recognized a total income tax expense of approximately $232 for the Company's consolidated subsidiaries. For the year ended December 31, 2021, the Company recorded current income tax expense of approximately $118 and deferred income tax provision of approximately $114.

As of December 31, 2023 and December 31, 2022, the Company had $594 of deferred tax assets and $8,487 of deferred tax liabilities, respectively, primarily relating to deferred taxes attributable to certain differences between the computation of income for U.S. federal income tax purposes as compared to GAAP.

Based on its analysis, the Company has determined that there were no uncertain income tax positions that do not meet the more likely than not threshold as defined by Accounting Standards Codification Topic 740, Income Taxes ("ASC 740") through December 31, 2023. The 2020 through 2023 tax years remain subject to examination by the U.S. federal, state, and local tax authorities.

Distributions—Distributions to common stockholders of the Company are recorded on the record date as set by the board of directors. The Company intends to make distributions to its stockholders that will be sufficient to enable the Company to maintain its status as a RIC. The Company intends to distribute approximately all of its net investment income (see Note 5. Agreements, for details) on a quarterly basis and substantially all of its taxable income on an annual basis, except that the Company may retain certain net capital gains for reinvestment.

The Company has adopted a dividend reinvestment plan that provides for reinvestment of any distributions declared on behalf of its stockholders, unless a stockholder elects to receive cash.

The Company applies the following in implementing the dividend reinvestment plan. If the price at which newly issued shares are to be credited to stockholders' accounts is equal to or greater than 110.0% of the last determined net asset value of the shares, the Company will use only newly issued shares to implement its dividend reinvestment plan. Under such circumstances, the number of shares to be issued to a stockholder is determined by dividing the total dollar amount of the distribution payable to such stockholder by the market price per share of the Company's common stock on NASDAQ Global Select Market ("NASDAQ") on the distribution payment date. Market price per share on that date will be the closing price for such shares on NASDAQ or, if no sale is reported for such day, the average of their electronically reported bid and ask prices.

If the price at which newly issued shares are to be credited to stockholders' accounts is less than 110.0% of the last determined net asset value of the shares, the Company will either issue new shares or instruct the plan administrator to purchase shares in the open market to satisfy the additional shares required. Shares purchased in open market transactions by the plan administrator will be allocated to a stockholder based on the average purchase price, excluding any brokerage charges or other charges, of all shares of common stock purchased in the open market. The number of shares of the Company's common stock to be outstanding after giving effect to payment of the distribution cannot be established until the value per share at which additional shares will be issued has been determined and elections of the Company's stockholders have been tabulated.

Stock repurchase program—On February 4, 2016, the Company's board of directors authorized a program for the purpose of repurchasing up to $50,000 worth of the Company's common stock (the "Repurchase Program"). Under the Repurchase Program, the Company was permitted, but was not obligated, to repurchase its outstanding common stock in the open market from time to time provided that it complied with the Company's code of ethics and the guidelines specified in Rule 10b-18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), including certain price, market volume and timing constraints. In addition, any repurchases were conducted in accordance with the 1940 Act. On December 8, 2023, the Company's board of directors extended the Company's Repurchase Program and the Company expects the Repurchase Program to be in place until the earlier of December 31, 2024 or until $50,000 of its outstanding shares of common stock have been repurchased. During the years ended December 31, 2023 and December 31, 2022, the Company didnot repurchase any shares of the Company's common stock. The Company previously repurchased $2,948 outstanding shares of its common stock under the Repurchase Program.

Earnings per share—The Company's earnings per share ("EPS") amounts have been computed based on the weighted-average number of shares of common stock outstanding for the period. Basic EPS is computed by dividing net increase (decrease) in net assets resulting from operations by the weighted average number of shares of common stock outstanding during the period of computation. Diluted EPS is computed by dividing net increase (decrease) in net assets resulting from operations by the weighted average number of shares of common stock assuming all potential shares had been issued, and its related net impact to net assets accounted for, and the additional shares of common stock were dilutive. Diluted EPS reflects the potential dilution, using the as-if-converted method for convertible debt, which could occur if all potentially dilutive securities were exercised.

Foreign securities—The accounting records of the Company are maintained in U.S. dollars. Investment securities denominated in foreign currencies are translated into U.S. dollars based on the rate of exchange of such currencies on the date of valuation. Purchases and sales of investment securities and income and expense items denominated in foreign currencies are translated into U.S. dollars based on the rate of exchange of such currencies on the respective dates of the transactions. The Company isolates that portion of the results of operations resulting from changes in foreign exchange rates on investments from the fluctuations arising from changes in market prices of securities held. Such fluctuations are included with "Net change in unrealized appreciation (depreciation)" and "Net realized gains (losses)" in the Company's Consolidated Statements of Operations.

Investments denominated in foreign currencies may be negatively affected by movements in the rate of exchange between the U.S. dollar and such foreign currencies. This movement is beyond the control of the Company and cannot be predicted.

Use of estimates—The preparation of the Company's consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the Company's consolidated financial statements and the reported amounts of revenues and expenses during the reporting periods. Changes in the economic environment, financial markets, and other metrics used in determining these estimates could cause actual results to differ from the estimates used, and the differences could be material.

Note 3. Investments

At December 31, 2023, the Company’s investments consisted of the following:

Investment Cost and Fair Value by Type

Investment Cost and Fair Value by Industry

At December 31, 2022, the Company's investments consisted of the following:

Investment Cost and Fair Value by Type

Investment Cost and Fair Value by Industry

As of December 31, 2023, the Company's aggregate principal amount of its second lien term loan in Integro Parent Inc. ("Integro") was $13,657. During the second quarter of 2022, the Company placed an aggregate principal amount of $4,780 of its second lien position on non-accrual status, that was subsequently taken off non-accrual status in the third quarter of 2023. As of December 31, 2023, the Company's position in Integro had total unearned interest income of $352 for the year then ended.

During the second quarter of 2022, the Company placed its second lien position in National HME, Inc. ("National HME") on non-accrual status. As of December 31, 2023, the Company's second lien position in National HME had an aggregate cost basis of $7,872, an aggregate fair value of $3,000. During the fourth quarter of 2022, the Company reversed $11,236 of previously recorded PIK interest in National HME and $1,500 of previously recorded other income in NHME Holdings Corp. as the Company believes this PIK interest and other income will ultimately not be collectible.

As of December 31, 2023, the Company's aggregate principal amount of its subordinated position and first lien term loans in American Achievement Corporation ("AAC") was $5,230 and $31,406, respectively. During the first quarter of 2021, the Company placed an aggregate principal amount of $5,230 of its subordinated position on non-accrual status. During the third quarter of 2021, the Company placed an initial aggregate principal amount of $13,479 of its first lien term loans on non-accrual status. During the third quarter of 2023, the Company placed the remaining aggregate principal amount of $17,927 of its first lien term loans on non-accrual status. As of December 31, 2023, the Company's positions in AAC on non-accrual status had an aggregate cost basis of $31,369, an aggregate fair value of $20,586 and total unearned interest income of $3,353 for the year then ended.

During the first quarter of 2020, the Company placed its junior preferred shares in UniTek Global Services, Inc. ("UniTek") on non-accrual status. As of December 31, 2023, the Company's junior preferred shares in UniTek had an aggregate cost basis of $34,393, an aggregate fair value of $0 and total unearned dividend income of $7,657 for the year then ended. During the third quarter of 2021, the Company placed an aggregate amount of $19,795 of its investment in the senior preferred shares of UniTek on non-accrual status. As of December 31, 2023, the Company's senior preferred shares in UniTek had an aggregate cost basis of $19,795, an aggregate fair value of approximately $4,210 and total unearned dividend income of approximately $5,606 for the year then ended.

During the fourth quarter of 2023, the Company placed its second lien term loan in Transcendia Holdings, Inc. ("Transcendia") on non-accrual status. As of December 31, 2023, the Company's second lien term loan in Transcendia had an aggregate cost basis of $14,445, an aggregate fair value of $7,250 and total unearned interest income of $520 for the year then ended.

As of December 31, 2023, the Company had unfunded commitments on revolving credit facilities and bridge facilities of $112,803 and $0, respectively. As of December 31, 2023, the Company had unfunded commitments in the form of delayed draws or other future funding commitments of $43,948. The unfunded commitments on revolving credit facilities and delayed draws are disclosed on the Company's Consolidated Schedule of Investments as of December 31, 2023.

As of December 31, 2022, the Company had unfunded commitments on revolving credit facilities and bridge facilities of $100,315 and $0, respectively. As of December 31, 2022, the Company had unfunded commitments in the form of delayed draws or other future funding commitments of $123,748. The unfunded commitments on revolving credit facilities and delayed draws are disclosed on the Company's Consolidated Schedule of Investments as of December 31, 2022.

PPVA Black Elk (Equity) LLC

On May 3, 2013, the Company entered into a collateralized securities purchase and put agreement (the “SPP Agreement”) with a private hedge fund. Under the SPP Agreement, the Company purchased twenty million Class E Preferred Units of Black Elk Energy Offshore Operations, LLC (“Black Elk”) for $20,000 with a corresponding obligation of the private hedge fund, PPVA Black Elk (Equity) LLC, to repurchase the preferred units for $20,000 plus other amounts due under the SPP Agreement. The majority owner of Black Elk was the private hedge fund. In August 2014, the Company received a payment of $20,540, the full amount due under the SPP Agreement.

In August 2017, a trustee (the “Trustee”) for Black Elk informed the Company that the Trustee intended to assert a fraudulent conveyance claim (the “Claim”) against the Company and one of its affiliates seeking the return of the $20,540 repayment. Black Elk filed a Chapter 11 bankruptcy petition pursuant to the U.S. Bankruptcy Code in August 2015. The Trustee alleged that individuals affiliated with the private hedge fund conspired with Black Elk and others to improperly use proceeds from the sale of certain Black Elk assets to repay, in August 2014, the private hedge fund’s obligation to the Company under the SPP Agreement. The Company was unaware of these claims at the time the repayment was received. The private hedge fund is currently in liquidation under the laws of the Cayman Islands.

On December 22, 2017, the Company settled the Trustee’s $20,540 Claim for $16,000 and filed a claim with the Cayman Islands joint official liquidators of the private hedge fund for $16,000 that is owed to the Company under the SPP Agreement. The SPP Agreement was restored and is in effect since repayment has not been made. The Company continues to exercise its rights under the SPP Agreement and continues to monitor the liquidation process of the private hedge fund. During the year ended December 31, 2018, the Company received a $1,500 payment from its insurance carrier in respect to the settlement. As of December 31, 2023, the SPP Agreement has a cost basis of $14,500 and a fair value of $7,975, which is reflective of the higher inherent risk in this transaction.

NMFC Senior Loan Program III LLC

NMFC Senior Loan Program III LLC ("SLP III") was formed as a Delaware limited liability company and commenced operations on April 25, 2018. SLP III is structured as a private joint venture investment fund between the Company and SkyKnight Income II, LLC (“SkyKnight II”) and operates under a limited liability company agreement (the "SLP III Agreement"). The purpose of the joint venture is to invest primarily in senior secured loans issued by portfolio companies within the Company's core industry verticals. These investments are typically broadly syndicated first lien loans. All investment decisions must be unanimously approved by the board of managers of SLP III, which has equal representation from the Company and SkyKnight II. SLP III has afive year investment period and will continue in existence until April 25, 2025. The investment period may be extended for up toone year pursuant to certain terms of the SLP III Agreement.

SLP III is capitalized with equity contributions which are called from its members, on a pro-rata basis based on their equity commitments, as transactions are completed. Any decision by SLP III to call down on capital commitments requires approval by the board of managers of SLP III. As of December 31, 2023, the Company and SkyKnight II have committed and contributed $140,000 and $35,000, respectively, of equity to SLP III. The Company’s investment in SLP III is disclosed on the Company’s Consolidated Schedule of Investments as of December 31, 2023 and December 31, 2022.

On May 2, 2018, SLP III entered into its revolving credit facility with Citibank, N.A., which matures on January 8, 2026. Effective July 8, 2021, the reinvestment period was extended to July 8, 2024. As of the amendment on June 23, 2023, during the reinvestment period, the credit facility bears interest at a rate of the Secured Overnight Financing Rate ("SOFR") plus 1.80%, and after the reinvestment period it will bear interest at a rate of SOFR plus 2.10%. Prior to the amendment on June 23, 2023, the facility bore interest at a rate of London Interbank Offered Rate ("LIBOR") plus 1.60% per annum during the reinvestment period and LIBOR plus 1.90% per annum after the reinvestment period. Effective November 23, 2020, SLP III's revolving credit facility has a maximum borrowing capacity of $525,000. As of December 31, 2023 and December 31, 2022, SLP III had total investments with an aggregate fair value of approximately $636,560 and $639,327, respectively, and debt outstanding under its credit facility of $453,200 and $512,100, respectively. As of December 31, 2023 and December 31, 2022, none of SLP III's investments were on non-accrual. Additionally, as of December 31, 2023 and December 31, 2022, SLP III had unfunded commitments in the form of delayed draws of $1,127 and $2,948, respectively.

Below is a summary of SLP III's portfolio, along with a listing of the individual investments in SLP III's portfolio as of December 31, 2023 and December 31, 2022 :

The following table is a listing of the individual investments in SLP III's portfolio as of December 31, 2023:

(1)All interest is payable in cash unless otherwise indicated. All of the variable rate debt investments bear interest at a rate that may be determined by reference to the Secured Overnight Financing Rate (SOFR). For each investment, the current interest rate provided reflects the rate in effect as of December 31, 2023.

(2)Represents the fair value in accordance with Accounting Standards Codification Topic 820, Fair Value Measurement and Disclosures ("ASC 820"). The Company's board of directors does not determine the fair value of the investments held by SLP III.

The following table is a listing of the individual investments in SLP III's portfolio as of December 31, 2022:

(1)All interest is payable in cash unless otherwise indicated. A majority of the variable rate debt investments bear interest at a rate that may be determined by reference to the LIBOR (L), the Prime Rate (P), Secured Overnight Financing Rate (SOFR) and the alternative base rate (Base). For each investment, the current interest rate provided reflects the rate in effect as of December 31, 2022.

(2)Represents the fair value in accordance with ASC 820. The Company's board of directors does not determine the fair value of the investments held by SLP III.

Below is certain summarized financial information for SLP III as of December 31, 2023 and December 31, 2022 and for the years ended December 31, 2023, December 31, 2022 and December 31, 2021:

For the years ended December 31, 2023, December 31, 2022 and December 31, 2021, the Company earned approximately $20,038, $17,485 and $16,712, respectively, of dividend income related to SLP III, which is included in dividend income. As of December 31, 2023 and December 31, 2022 approximately $5,338 and $4,550, respectively, of dividend income related to SLP III was included in interest and dividend receivable.

The Company has determined that SLP III is an investment company under ASC 946; however, in accordance with such guidance the Company will generally not consolidate its investment in a company other than a wholly-owned investment company subsidiary. Furthermore, ASC 810 concludes that in a joint venture where both members have equal decision making authority, it is not appropriate for one member to consolidate the joint venture since neither has control. Accordingly, the Company does not consolidate SLP III.

NMFC Senior Loan Program IV LLC

NMFC Senior Loan Program IV LLC ("SLP IV") was formed as a Delaware limited liability company on April 6, 2021, and commenced operations on May 5, 2021. SLP IV is structured as a private joint venture investment fund between the Company and SkyKnight Income Alpha, LLC ("SkyKnight Alpha") and operates under the First Amended and Restated Limited Liability Company Agreement of NMFC Senior Loan Program IV LLC, dated May 5, 2021 (the "SLP IV Agreement"). Upon the effectiveness of the SLP IV Agreement, the members contributed their respective membership interests in NMFC Senior Loan Program I LLC ("SLP I") and NMFC Senior Loan Program II LLC ("SLP II") to SLP IV. Immediately following the contribution of their membership interests, SLP I and SLP II became wholly-owned subsidiaries of SLP IV. The purpose of the joint venture is to invest primarily in senior secured loans issued by portfolio companies within the Company's core industry verticals. These investments are typically broadly syndicated first lien loans. All investment decisions must be unanimously approved by the board of managers of SLP IV, which has equal representation from the Company and SkyKnight Alpha. SLP IV has afive year investment period and will continue in existence until May 5, 2028. The investment period may be extended for up toone year pursuant to certain terms of the SLP IV Agreement.

SLP IV is capitalized with equity contributions which were transferred and contributed from its members. As of December 31, 2023 and December 31, 2022, the Company and SkyKnight Alpha have transferred and contributed $112,400 and $30,600, respectively, of their membership interests in SLP I and SLP II to SLP IV. The Company’s investment in SLP IV is disclosed on the Company’s Consolidated Schedule of Investments as of December 31, 2023 and December 31, 2022.

On May 5, 2021, SLP IV entered into a $370,000 revolving credit facility with Wells Fargo Bank, National Association which matures on May 5, 2026. As of the amendment on April 28, 2023, the facility bears interest at a rate of SOFR plus 1.70%. Prior to the amendment on April 28, 2023, the facility bore interest at a rate of LIBOR plus 1.60% per annum. As of December 31, 2023 and December 31, 2022, SLP IV had total investments with an aggregate fair value of approximately $467,886 and $473,762, respectively, and debt outstanding under its credit facility of $306,537 and $365,537, respectively. As of December 31, 2023, none of SLP IV’s investments were on non-accrual. Additionally, as of December 31, 2023 and December 31, 2022, SLP IV had unfunded commitments in the form of delayed draws of $792 and $1,973, respectively.

Below is a summary of SLP IV's consolidated portfolio, along with a listing of the individual investments in SLP IV's consolidated portfolio as of December 31, 2023 and December 31, 2022:

The following table is a listing of the individual investments in SLP IV's consolidated portfolio as of December 31, 2023:

(1)All interest is payable in cash unless otherwise indicated. All of the variable rate debt investments bear interest at a rate that may be determined by reference to the Secured Overnight Financing Rate (SOFR). For each investment, the current interest rate provided reflects the rate in effect as of December 31, 2023.

(2)Represents the fair value in accordance with ASC 820. The Company's board of directors does not determine the fair value of the investments held by SLP IV.

The following table is a listing of the individual investments in SLP IV's consolidated portfolio as of December 31, 2022:

(1)All interest is payable in cash unless otherwise indicated. A majority of the variable rate debt investments bear interest at a rate that may be determined by reference to the LIBOR (L), the Prime Rate (P), Secured Overnight Financing Rate (SOFR) and the alternative base rate (Base). For each investment, the current interest rate provided reflects the rate in effect as of December 31, 2022.

(2)Represents the fair value in accordance with ASC 820. The Company's board of directors does not determine the fair value of the investments held by SLP IV.

Below is certain summarized consolidated financial information for SLP IV as of December 31, 2023 and December 31, 2022 and for the year ended December 31, 2023, December 31, 2022 and for the period from May 5, 2021 through December 31, 2021:

(1)Reflects the results of operations for the period from May 5, 2021 through December 31, 2021.

For the year ended December 31, 2023, December 31, 2022 and for the period from May 5, 2021 through December 31, 2021, the Company earned approximately, $15,483 and $13,173 and $7,767 of dividend income related to SLP IV, respectively, which is included in dividend income. As of December 31, 2023 and December 31, 2022, approximately $4,103 and $3,653, respectively of dividend income related to SLP IV was included in interest and dividend receivable.

The Company has determined that SLP IV is an investment company under ASC 946; in accordance with such guidance the Company will generally not consolidate its investment in a company other than a wholly-owned investment company subsidiary. Furthermore, ASC 810 concludes that in a joint venture where both members have equal decision making authority, it is not appropriate for one member to consolidate the joint venture since neither has control. Accordingly, the Company does not consolidate SLP IV.

Unconsolidated Significant Subsidiaries

In accordance with Regulation S-X Rules 3-09 and 4-08(g), the Company evaluates its unconsolidated controlled portfolio companies to determine if any are "significant subsidiaries." This determination is made based upon an analysis performed, pursuant to which the Company must determine if any of its portfolio companies are considered a "significant subsidiary" as defined by Rule 1-02(w) of Regulation S-X under this rule. As of December 31, 2023, the Company did not have any portfolio companies that were deemed to be a "significant subsidiary."

Investment Risk Factors—First and second lien debt that the Company invests in is almost entirely rated below investment grade or may be unrated. Debt investments rated below investment grade are often referred to as "leveraged loans", "high yield" or "junk" debt investments, and may be considered "high risk" compared to debt investments that are rated investment grade. These debt investments are considered speculative because of the credit risk of the issuers. Such issuers are considered more likely than investment grade issuers to default on their payments of interest and principal, and such risk of default could reduce the net asset value and income distributions of the Company. In addition, some of the Company's debt investments will not fully amortize during their lifetime, which could result in a loss or a substantial amount of unpaid principal and interest due upon maturity. First and second lien debt may also lose significant market value before a default occurs. Furthermore, an active trading market may not exist for these first and second lien debt investments. This illiquidity may make it more difficult to value the debt.

Subordinated debt is generally subject to similar risks as those associated with first and second lien debt, except that such debt is subordinated in payment and/or lower in lien priority. Subordinated debt is subject to the additional risk that the cash flow of the borrower and the property securing the debt, if any, may be insufficient to meet scheduled payments after giving effect to the senior secured and unsecured obligations of the borrower.

The Company may directly invest in the equity of private companies or, in some cases, equity investments could be made in connection with a debt investment. Equity investments may or may not fluctuate in value, resulting in recognized realized gains or losses upon disposition.

Note 4. Fair Value

Pursuant to Rule 2a-5, a market quotation is readily available for purposes of Section 2(a)(41) of the 1940 Act with respect to a security only when that “quotation is a quoted price (unadjusted) in active markets for identical investments that the fund can access at the measurement date, provided that a quotation will not be readily available if it is not reliable.” Fair value is the amount that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. ASC 820 establishes a fair value hierarchy that prioritizes and ranks the inputs to valuation techniques used in measuring investments at fair value. The hierarchy classifies the inputs used in measuring fair value into three levels as follows:

Level I—Quoted prices (unadjusted) are available in active markets for identical investments and the Company has the ability to access such quotes as of the reporting date. The type of investments which would generally be included in Level I include active exchange-traded equity securities and exchange-traded derivatives. As required by ASC 820, the Company, to the extent that it holds such investments, does not adjust the quoted price for these investments, even in situations where the Company holds a large position and a sale could reasonably impact the quoted price.

Level II—Pricing inputs are observable for the investments, either directly or indirectly, as of the reporting date, but are not the same as those used in Level I. Level II inputs include the following:

•Quoted prices for similar assets or liabilities in active markets;

•Quoted prices for identical or similar assets or liabilities in non-active markets (examples include corporate and municipal bonds, which trade infrequently);

•Pricing models whose inputs are observable for substantially the full term of the asset or liability (examples include most over-the-counter derivatives, including foreign exchange forward contracts); and

•Pricing models whose inputs are derived principally from or corroborated by observable market data through correlation or other means for substantially the full term of the asset or liability.

Level III—Pricing inputs are unobservable for the investment and include situations where there is little, if any, market activity for the investment.

The inputs used to measure fair value may fall into different levels. In all instances when the inputs fall within different levels of the hierarchy, the level within which the fair value measurement is categorized is based on the lowest level of input that is significant to the fair value measurement in its entirety. As such, a Level III fair value measurement may include inputs that are both observable and unobservable. Gains and losses for such assets categorized within the Level III table below may include changes in fair value that are attributable to both observable inputs and unobservable inputs.

The inputs into the determination of fair value require significant judgment or estimation by management and consideration of factors specific to each investment. A review of the fair value hierarchy classifications is conducted on a quarterly basis. Changes in the observability of valuation inputs may result in the transfer of certain investments within the fair value hierarchy from period to period.

The following table summarizes the levels in the fair value hierarchy that the Company’s portfolio investments fall into as of December 31, 2023:

The following table summarizes the levels in the fair value hierarchy that the Company's portfolio investments fall into as of December 31, 2022:

The following table summarizes the changes in fair value of Level III portfolio investments for the year ended December 31, 2023, as well as the portion of appreciation (depreciation) included in income attributable to unrealized appreciation (depreciation) related to those assets and liabilities still held by the Company at December 31, 2023:

(1)Includes non-cash reorganizations and restructurings.

(2)As of December 31, 2023, portfolio investments were transferred into Level III from Level II and out of Level III into Level II at fair value as of the beginning of the period in which the reclassification occurred.

The following table summarizes the changes in fair value of Level III portfolio investments for the year ended December 31, 2022, as well as the portion of appreciation (depreciation) included in income attributable to unrealized appreciation (depreciation) related to those assets and liabilities still held by the Company at December 31, 2022:

(1)As of December 31, 2022, portfolio investments were transferred into Level III from Level II at fair value as of the beginning of the period in which the reclassification occurred.

Except as noted in the tables above, there were no other transfers in or out of Level I, II or III during the years ended December 31, 2023 and December 31, 2022. Transfers into Level III occur as quotations obtained through pricing services are deemed not representative of fair value as of the balance sheet date and such assets are internally valued. As quotations obtained through pricing services are substantiated through additional market sources, investments are transferred out of Level III. In addition, transfers out of Level III and transfers into Level III occur based on the increase or decrease in the availability of certain observable inputs.

The Company invests in revolving credit facilities. These investments are categorized as Level III investments as these assets are not actively traded and their fair values are often implied by the term loans of the respective portfolio companies.

The Company generally uses the following framework when determining the fair value of investments where there are little, if any, market activity or observable pricing inputs. The Company typically determines the fair value of its performing debt investments utilizing an income approach. Additional consideration is given using a market based approach, as well as reviewing the overall underlying portfolio company's performance and associated financial risks. The following outlines additional details on the approaches considered:

Company Performance, Financial Review, and Analysis: Prior to investment, as part of its due diligence process, the Company evaluates the overall performance and financial stability of the portfolio company. Post investment, the Company analyzes each portfolio company's current operating performance and relevant financial trends versus prior year and budgeted results, including, but not limited to, factors affecting its revenue and earnings before interest, taxes, depreciation, and amortization ("EBITDA") growth, margin trends, liquidity position, covenant compliance and changes to its capital structure. The Company also attempts to identify and subsequently track any developments at the portfolio company, within its customer or vendor base or within the industry or the macroeconomic environment, generally, that may alter any material element of its original investment thesis. This analysis is specific to each portfolio company. The Company leverages the knowledge gained from its original due diligence process, augmented by this subsequent monitoring, to continually refine its outlook for each of its portfolio companies and ultimately form the valuation of its investment in each portfolio company. When an external event such as a purchase transaction, public offering or subsequent sale occurs, the Company will consider the pricing indicated by the external event to corroborate the private valuation.

For debt investments, the Company may employ the Market Based Approach (as described below) to assess the total enterprise value of the portfolio company, in order to evaluate the enterprise value coverage of the Company’s debt investment. For equity investments or in cases where the Market Based Approach implies a lack of enterprise value coverage for the debt investment, the Company may additionally employ a discounted cash flow analysis based on the free cash flows of the portfolio company to assess the total enterprise value.

After enterprise value coverage is demonstrated for the Company’s debt investments through the method(s) above, the Income Based Approach (as described below) may be employed to estimate the fair value of the investment.

Market Based Approach: The Company may estimate the total enterprise value of each portfolio company by utilizing EBITDA or revenue multiples of publicly traded comparable companies and comparable transactions. The Company considers numerous factors when selecting the appropriate companies whose trading multiples are used to value its portfolio companies. These factors include, but are not limited to, the type of organization, similarity to the business being valued, and relevant risk factors, as well as size, profitability and growth expectations. The Company may apply an average of various relevant comparable company EBITDA or revenue multiples to the portfolio company's latest twelve month ("LTM") EBITDA or revenue or projected EBITDA or revenue to calculate the enterprise value of the portfolio company. Significant increases or decreases in the EBITDA or revenue multiple will result in an increase or decrease in enterprise value, which may result in an increase or decrease in the fair value estimate of the investment. In applying the market based approach as of December 31, 2023 and December 31, 2022, the Company used the relevant EBITDA or revenue multiple ranges set forth in the table below to determine the enterprise value of its portfolio companies. The Company believes these were reasonable ranges in light of current comparable company trading levels and the specific portfolio companies involved.

Income Based Approach: The Company also may use a discounted cash flow analysis to estimate the fair value of the investment. Projected cash flows represent the relevant security's contractual interest, fee and principal payments plus the assumption of full principal recovery at the investment's expected maturity date. These cash flows are discounted at a rate established utilizing a combination of a yield calibration approach and a comparable investment approach. The yield calibration approach incorporates changes in the credit quality (as measured by relevant statistics) of the portfolio company, as compared to changes in the yield associated with comparable credit quality market indices, between the date of origination and the valuation date. The comparable investment approach utilizes an average yield-to maturity of a selected set of high-quality, liquid investments to determine a comparable investment discount rate. Significant increases or decreases in the discount rate would result in a decrease or increase in the fair value measurement. In applying the income based approach as of December 31, 2023 and December 31, 2022, the Company used the discount ranges set forth in the table below to value investments in its portfolio companies.

The unobservable inputs used in the fair value measurement of the Company's Level III investments as of December 31, 2023 were as follows:

(1)Unobservable inputs were weighted by the relative fair value of the investments.

(2)Fair value was determined based on transaction pricing or recent acquisition or sale as the best measure of fair value with no material changes in operations of the related portfolio company since the transaction date.

The unobservable inputs used in the fair value measurement of the Company's Level III investments as of December 31, 2022 were as follows:

(1)Unobservable inputs were weighted by the relative fair value of the investments.

(2)Fair value was determined based on transaction pricing or recent acquisition or sale as the best measure of fair value with no material changes in operations of the related portfolio company since the transaction date.

The carrying value of the collateralized agreement approximates fair value as of December 31, 2023 and is considered a Level III investment. The fair value of other financial assets and liabilities approximates their carrying value based on the short-term nature of these items.

The Holdings Credit Facility, 2019A Unsecured Notes, 2021A Unsecured Notes, 2022A Unsecured Notes, SBA-guaranteed debentures, DB Credit Facility, NMFC Credit Facility and NMNLC Credit Facility II are considered Level III investments. The fair value of the 2022 Convertible Notes and the 8.250% Unsecured Notes are based on quoted prices and are considered Level II investments. See Note 7. Borrowings, for details.

The following are the principal amounts and fair values of the Company’s borrowings as of December 31, 2023 and December 31, 2022. Fair value is estimated by discounting remaining payments using applicable current market rates, which take into account changes in the Company’s marketplace credit ratings or market quotes, if available.

(1) As of December 31, 2023, the principal amount of the NMFC Credit Facility was $36,813, which included £22,850 denominated in GBP and €700 denominated in EUR that has been converted to U.S. dollars. As of December 31, 2023, the fair value of the NMFC Credit Facility was $36,507, which included £22,660 denominated in GBP and €694 denominated in EUR that has been converted to U.S. dollars. As of December 31, 2022, the principal amount of the NMFC Credit Facility was $40,359, which included £22,850 denominated in GBP and €700 denominated in EUR that has been converted to U.S. dollars. As of December 31, 2022, the fair value of the NMFC Credit Facility was $39,699, which included £22,476 denominated in GBP and €689 denominated in EUR that has been converted to U.S. dollars.

Fair value risk factors—The Company seeks investment opportunities that offer the possibility of attaining substantial capital appreciation. Certain events particular to each industry in which the Company's portfolio companies conduct their operations, as well as general economic, political and public health conditions, may have a significant negative impact on the operations and profitability of the Company's investments and/or on the fair value of the Company's investments. The Company's investments are subject to the risk of non-payment of scheduled interest or principal, resulting in a reduction in income to the Company and their corresponding fair valuations. Also, there may be risk associated with the concentration of investments in one geographic region or in certain industries. These events are beyond the control of the Company and cannot be predicted. Furthermore, the ability to liquidate investments and realize value is subject to uncertainties.

Note 5. Agreements

The Company entered into an investment advisory and management agreement (the “Investment Management Agreement”) with the Investment Adviser, which was most recently re-approved by the Company's board of directors on January 30, 2024, at an in-person meeting, for a period of 12 months commencing on March 1, 2024. Under the Investment Management Agreement, the Investment Adviser manages the day-to-day operations of, and provides investment advisory services to, the Company. For providing these services, the Investment Adviser receives a fee from the Company, consisting oftwo components—a base management fee and an incentive fee. On November 1, 2021, the Company entered into Amendment No. 1 to the Investment Management Agreement (“Amendment No. 1”). As described below, the sole purpose of Amendment No. 1 was to reduce the base management fee from 1.75% of the Company’s gross assets to 1.4% of the Company’s gross assets.

Pursuant to Amendment No. 1, the base management fee is calculated at an annual rate of 1.4% of the Company's gross assets, which equals the Company's total assets on the Consolidated Statements of Assets and Liabilities, less cash and cash equivalents. Prior to Amendment No. 1, pursuant to the Investment Management Agreement, the base management fee was calculated at an annual rate of 1.75% of the Company's gross assets, which equaled the Company's total assets on the Consolidated Statements of Assets and Liabilities, less (i) the borrowings under the New Mountain Finance SPV Funding, L.L.C. Loan and Security Agreement, as amended and restated, dated October 27, 2010 (the "SLF Credit Facility") and (ii) cash and cash equivalents. The base management fee is payable quarterly in arrears, and is calculated based on the average value of the Company's gross assets, which equals the Company's total assets, as determined in accordance with GAAP, less cash and cash equivalents at the end of each of the two most recently completed calendar quarters, and appropriately adjusted on a pro rata basis for any equity capital raises or repurchases during the current calendar quarter. The Company has not invested, and currently is not invested, in derivatives. To the extent the Company invests in derivatives in the future, the Company will use the actual value of the derivatives, as reported on the Consolidated Statements of Assets and Liabilities, for purposes of calculating its base management fee.

Effective as of and for the quarter ended March 31, 2021 through the quarter ending December 31, 2024, the Investment Adviser entered into a fee waiver agreement (the "Fee Waiver Agreement"), amended on August 7, 2023, pursuant to which the Investment Adviser will waive base management fees in order to reach a target base management fee of 1.25% on gross assets (the “Reduced Base Management Fee”). The Fee Waiver Agreement was most recently extended for a period of one year through the quarter ending December 31, 2024 by the Investment Adviser on August 7, 2023. The Investment Adviser cannot recoup management fees that the Investment Adviser has previously waived. For the years ended December 31, 2023, December 31, 2022 and December 31, 2021, management fees waived were approximately $4,117, $4,402 and $13,104, respectively.

The incentive fee consists oftwo parts. The first part is calculated and payable quarterly in arrears and equals 20.0% of the Company's “Pre-Incentive Fee Net Investment Income” for the immediately preceding quarter, subject to a “preferred return”, or “hurdle”, and a “catch-up” feature. "Pre-Incentive Fee Net Investment Income" means interest income, dividend income and any other income (including any other fees (other than fees for providing managerial assistance), such as commitment, origination, structuring, upfront, diligence and consulting fees or other fees that the Company receives from portfolio companies) accrued during the calendar quarter, minus the Company's operating expenses for the quarter (including the base management fee, expenses payable under an administration agreement, as amended and restated (the “Administration Agreement”), with the Administrator, and any interest expense and distributions paid on any issued and outstanding preferred stock (of which there were none as of December 31, 2023), but excluding the incentive fee). Pre-Incentive Fee Net Investment Income includes, in the case of investments with a deferred interest feature (such as original issue discount, debt instruments with PIK interest and zero coupon securities), accrued income that the Company has not yet received in cash. Pre-Incentive Fee

Net Investment Income does not include any realized capital gains, realized capital losses or unrealized capital appreciation or depreciation.

Pre-Incentive Fee Net Investment Income, expressed as a rate of return on the value of the Company's net assets at the end of the immediately preceding calendar quarter, will be compared to a "hurdle rate" of 2.0% per quarter (8.0% annualized), subject to a "catch-up" provision measured as of the end of each calendar quarter. The hurdle rate is appropriately pro-rated for any partial periods. The calculation of the Company's incentive fee with respect to the Pre-Incentive Fee Net Investment Income for each quarter is as follows:

•No incentive fee is payable to the Investment Adviser in any calendar quarter in which the Company's Pre-Incentive Fee Net Investment Income does not exceed the hurdle rate of 2.0% (the "preferred return" or "hurdle").

•100.0% of the Company's Pre-Incentive Fee Net Investment Income with respect to that portion of such Pre-Incentive Fee Net Investment Income, if any, that exceeds the hurdle rate but is less than or equal to 2.5% in any calendar quarter (10.0% annualized) is payable to the Investment Adviser. This portion of the Company's Pre-Incentive Fee Net Investment Income (which exceeds the hurdle rate but is less than or equal to 2.5%) is referred to as the "catch-up". The catch-up provision is intended to provide the Investment Adviser with an incentive fee of 20.0% on all of the Company's Pre-Incentive Fee Net Investment Income as if a hurdle rate did not apply when the Company's Pre-Incentive Fee Net Investment Income exceeds 2.5% in any calendar quarter.

•20.0% of the amount of the Company's Pre-Incentive Fee Net Investment Income, if any, that exceeds 2.5% in any calendar quarter (10.0% annualized) is payable to the Investment Adviser once the hurdle is reached and the catch-up is achieved.

For the years ended December 31, 2023, December 31, 2022 and December 31, 2021 no incentive fees were waived by the Investment Adviser.

The second part of the incentive fee will be determined and payable in arrears as of the end of each calendar year (or upon termination of the Investment Management Agreement) and will equal 20.0% of the Company's realized capital gains, if any, on a cumulative basis from inception through the end of each calendar year, computed net of all realized capital losses and unrealized capital depreciation on a cumulative basis, less the aggregate amount of any previously paid capital gain incentive fee.

In accordance with GAAP, the Company accrues a hypothetical capital gains incentive fee based upon the cumulative net realized capital gains and realized capital losses and the cumulative net unrealized capital appreciation and unrealized capital depreciation on investments held at the end of each period. Actual amounts paid to the Investment Adviser are consistent with the Investment Management Agreement and are based only on actual realized capital gains computed net of all realized capital losses and unrealized capital depreciation on a cumulative basis from inception through the end of each calendar year.

The following table summarizes the management fees and incentive fees incurred by the Company for the years ended December 31, 2023, December 31, 2022 and December 31, 2021.

(1)As of December 31, 2023, December 31, 2022 and December 31, 2021, no actual capital gains incentive fee was owed under the Investment Management Agreement by the Company, as cumulative net realized capital gains did not exceed cumulative unrealized capital depreciation.

The Company has entered into the Administration Agreement with the Administrator under which the Administrator provides administrative services. The Administration Agreement was most recently re-approved by the board of directors on January 30, 2024 for a period of 12 months commencing on March 1, 2024. The Administrator maintains, or oversees the maintenance of, the Company’s consolidated financial records, prepares reports filed with the SEC, generally monitors the payment of the Company's expenses and oversees the performance of administrative and professional services rendered by others. The Company reimburses the Administrator for the Company's allocable portion of overhead and other expenses incurred by the Administrator in performing its obligations to the Company under the Administration Agreement. Pursuant to the Administration Agreement and further restricted by the Company, the Administrator may, in its own discretion, submit to the Company for reimbursement some or all of the expenses that the Administrator has incurred on behalf of the Company during any quarterly period. As a result, the amount of expenses for which the Company will have to reimburse the Administrator may fluctuate in future quarterly periods and there can be no assurance given as to when, or if, the Administrator may determine to limit the expenses that the Administrator submits to the Company for reimbursement in the future. However, it is expected that the Administrator will continue to support part of the expense burden of the Company in the near future and may decide to not calculate and charge through certain overhead related amounts as well as continue to cover some of the indirect costs. The Administrator cannot recoup any expenses that the Administrator has previously waived. For the years ended December 31, 2023, December 31, 2022 and December 31, 2021, approximately $2,341, $2,459 and $2,827, respectively, of indirect administrative expenses were included in administrative expenses of which $0, $238 and $244, respectively, were waived by the Administrator. As of December 31, 2023 and December 31, 2022, $682 and $605, respectively, of indirect administrative expenses were included in payable to affiliates. For the years ended December 31, 2023, December 31, 2022 and December 31, 2021, the reimbursement to the Administrator represented approximately 0.07%,0.07% and 0.08%, respectively, of the Company's gross assets.

The Company, the Investment Adviser and the Administrator have also entered into a Trademark License Agreement, as amended, with New Mountain Capital, pursuant to which New Mountain Capital has agreed to grant the Company, the Investment Adviser and the Administrator a non-exclusive, royalty-free license to use the "New Mountain" and the "New Mountain Finance" names, as well as the NMF logo. Under the Trademark License Agreement, as amended, subject to certain conditions, the Company, the Investment Adviser and the Administrator will have a right to use the "New Mountain" and "New Mountain Finance" names, as well as the NMF logo, for so long as the Investment Adviser or one of its affiliates remains the investment adviser of the Company. Other than with respect to this limited license, the Company, the Investment Adviser and the Administrator will have no legal right to the "New Mountain" or the "New Mountain Finance" names, as well as the NMF logo.

In addition, pursuant to an exemptive order issued by the SEC on April 8, 2020 and applicable to all BDCs through December 31, 2020 (the “Temporary Relief), the Company was permitted, subject to the satisfaction of certain conditions, to complete follow-on investments in its existing portfolio companies with certain affiliates that are private funds if such private funds did not hold an investment in such existing portfolio company. Without the Temporary Relief, such private funds would not be able to participate in such co-investments with the Company unless the private funds had previously acquired securities of the portfolio company in a co-investment transaction with the Company. Although the Temporary Relief expired on December 31, 2020, the SEC’s Division of Investment Management had indicated that until March 31, 2022, it would not recommend enforcement action, to the extent that any BDC with an existing co-investment order continued to engage in certain transactions described in the Temporary Relief, pursuant to the same terms and conditions described therein. The Temporary Relief is no longer effective; however, on August 30, 2022, the Company received an Order from the SEC that amended its existing Exemptive Order to permit the Company to complete follow-on investments in its existing portfolio companies with certain affiliates that are private funds if such private funds do not hold an investment in such existing portfolio company, subject to certain conditions.

Note 6. Related Parties

The Company has entered into a number of business relationships with affiliated or related parties.

The Company has entered into the Investment Management Agreement with the Investment Adviser, a wholly-owned subsidiary of New Mountain Capital. Therefore, New Mountain Capital is entitled to any profits earned by the Investment Adviser, which includes any fees payable to the Investment Adviser under the terms of the Investment Management Agreement, less expenses incurred by the Investment Adviser in performing its services under the Investment Management Agreement.

The Company has entered into the Fee Waiver Agreement with the Investment Adviser, pursuant to which the Investment Adviser agreed to voluntarily reduce the base management fees payable to the Investment Adviser by the Company under the Investment Management Agreement beginning with the quarter ended March 31, 2021 through the quarter ended December 31, 2022. Subsequently, the Company and the Investment Adviser extended the term of the Fee Waiver Agreement to be effective through the quarter ending December 31, 2024. See Note 5. Agreements, for details.

The Company has entered into the Administration Agreement with the Administrator, a wholly-owned subsidiary of New Mountain Capital. The Administrator arranges office space for the Company and provides office equipment and administrative services necessary to conduct their respective day-to-day operations pursuant to the Administration Agreement. The Company reimburses the Administrator for the allocable portion of overhead and other expenses incurred by it in performing its obligations to the Company under the Administration Agreement, which includes the fees and expenses associated with performing administrative, finance and compliance functions, and the compensation of the Company's chief financial officer and chief compliance officer and their respective staffs.

The Company, the Investment Adviser and the Administrator have entered into a royalty-free Trademark License Agreement, as amended, with New Mountain Capital, pursuant to which New Mountain Capital has agreed to grant the Company, the Investment Adviser and the Administrator a non-exclusive, royalty-free license to use the name "New Mountain" and "New Mountain Finance", as well as the NMF logo.

The Company has adopted a formal code of ethics that governs the conduct of its officers and directors. These officers and directors also remain subject to the duties imposed by the 1940 Act and the Delaware General Corporation Law.

The Investment Adviser and its affiliates may also manage other funds in the future that may have investment mandates that are similar, in whole or in part, to the Company’s investment mandates. The Investment Adviser and its affiliates may determine that an investment is appropriate for the Company or for one or more of those other funds. In such event, depending on the availability of such investment and other appropriate factors, the Investment Adviser or its affiliates may determine that the Company should invest side-by-side with one or more other funds. Any such investments will be made only to the extent permitted by applicable law and interpretive positions of the SEC and its staff and consistent with the Investment Adviser’s allocation procedures. On October 8, 2019, the SEC issued an exemptive order (the “Exemptive Order”), which superseded a prior order issued on December 18, 2017, which permits the Company to co-invest in portfolio companies with certain funds or entities managed by the Investment Adviser or its affiliates in certain negotiated transactions where co-investing would otherwise be prohibited under the 1940 Act, subject to the conditions of the Exemptive Order. Pursuant to the Exemptive Order, the Company is permitted to co-invest with its affiliates if a “required majority” (as defined in Section 57(o) of the 1940 Act) of the Company's independent directors make certain conclusions in connection with a co-investment transaction, including, but not limited to, that (1) the terms of the potential co-investment transaction, including the consideration to be paid, are reasonable and fair to the Company and its stockholders and do not involve overreaching in respect of the Company or its stockholders on the part of any person concerned, and (2) the potential co-investment transaction is consistent with the interests of the Company's stockholders and is consistent with its then-current investment objective and strategies. The Exemptive Order was amended on August 30, 2022 to permit the Company to complete follow-on investments in its existing portfolio companies with certain affiliates that are private funds if such private funds do not hold an investment in such existing portfolio company, subject to certain conditions.

On March 30, 2020, an affiliate of the Investment Adviser purchased directly from NMNLC 105,030 shares of NMNLC’s common stock at a price of $107.73 per share, which represented the net asset value per share of NMNLC at the date of purchase, for an aggregate purchase price of approximately $11,315. Immediately thereafter, NMNLC redeemed 105,030 shares of its common stock held by the Company in exchange for a promissory note with a principal amount of $11,315 and a 7.0% interest rate, which was repaid by NMNLC to the Company on March 31, 2020.

On March 30, 2020, the Company entered into an unsecured revolving credit facility with NMF Investments III, L.L.C., an affiliate of the Investment Adviser, with a $30,000 maximum amount of revolver borrowings available and a maturity date of December 31, 2022. On May 4, 2020, the Company entered into an Amended and Restated Uncommitted Revolving Loan Agreement with NMF Investments III, L.L.C., which increased the maximum amounts of revolving borrowings available thereunder from $30,000 to $50,000. On December 17, 2021, the Company entered into Amendment No. 1 to the Amended and Restated Uncommitted Revolving Loan Agreement with NMF Investments III, L.L.C., which lowered the interest rate and extended the maturity date from December 31, 2022 to December 31, 2024. On October 31, 2023, we entered into a Second Amended and Restated Uncommitted Revolving Loan Agreement with NMF Investments III, L.L.C., which increased the maximum amounts of revolving borrowings thereunder from $50,000 to $100,000, extended the maturity date from December 31, 2024 to December 31, 2027 and changed the interest rate to the Applicable Federal Rate. Refer to Note 7. Borrowings for discussion of the Unsecured Management Company Revolver (defined below).

Note 7. Borrowings

On June 8, 2018 the Company's shareholders approved the application of the modified asset coverage requirements set forth in Section 61(a) of the 1940 Act, which resulted in the reduction of the minimum asset coverage ratio applicable to the Company from 200.0% to 150.0% as of June 9, 2018 (which means the Company can borrow $2 for every $1 of its equity). As a result of the Company's exemptive relief received on November 5, 2014, the Company is permitted to exclude its SBA-guaranteed debentures from the 150.0% asset coverage ratio that the Company is required to maintain under the 1940 Act. The agreements governing the NMFC Credit Facility, the Convertible Notes (as defined below) and the Unsecured Notes (as defined below) contain certain covenants and terms, including a requirement that the Company not exceed a debt-to-equity ratio of 1.65 to 1.00 at the time of incurring additional indebtedness and a requirement that the Company not exceed a secured debt ratio of 0.70 to 1.00 at any time. As of December 31, 2023, the Company’s asset coverage ratio was 187.54%.

Holdings Credit Facility—On October 24, 2017, the Company entered into the Third Amended and Restated Loan and Security Agreement (as amended from time to time, the "Loan and Security Agreement") among the Company, as the Collateral Manager, NMF Holdings, as the Borrower, Wells Fargo Securities, LLC, as the Administrative Agent and Wells Fargo Bank, National Association, as the Lender and Collateral Custodian (the "Holdings Credit Facility"). As of the most recent amendment on October 26, 2023, the maturity date of the Holdings Credit Facility is October 26, 2028 and the maximum facility amount is the lesser of $800,000 and the actual commitments of the lenders to make advances as of such date.

As of December 31, 2023, the maximum amount of revolving borrowings available under the Holdings Credit Facility is $730,000. Under the Holdings Credit Facility, NMF Holdings is permitted to borrow up to 35.0%,45.0%,55.0%,67.5% or 70.0% of the purchase price of pledged assets, subject to approval by Wells Fargo Bank, National Association. The Holdings Credit Facility is non-recourse to the Company and is collateralized by all of the investments of NMF Holdings on an investment by investment basis. All fees associated with the origination, amending or upsizing of the Holdings Credit Facility are capitalized on the Company's Consolidated Statement of Assets and Liabilities and charged against income as other financing expenses over the life of the Holdings Credit Facility. The Holdings Credit Facility contains certain customary affirmative and negative covenants and events of default. In addition, the Holdings Credit Facility requires the Company to maintain a minimum asset coverage ratio of 150.0%. The covenants are generally not tied to mark to market fluctuations in the prices of NMF Holdings investments, but rather to the performance of the underlying portfolio companies.

As of the amendment on October 26, 2023, the Holdings Credit Facility bears interest at a rate of SOFR plus 2.50% per annum for Broadly Syndicated Loans (as defined in the Eighth Amendment to the Loan and Security Agreement). From April 28, 2023 to October 25, 2023, the Holdings Credit Facility bore interest at a rate of SOFR plus 1.70% for Broadly Syndicated Loans (as defined in the Seventh Amendment to the Loan and Security Agreement) and SOFR plus 2.20% per annum for all other investments. From April 20, 2021 to April 27, 2023, the Holdings Credit Facility bore interest at a rate of LIBOR plus 1.60% per annum for Broadly Syndicated Loans (as defined in the Fifth Amendment to the Loan and Security Agreement) and LIBOR plus 2.10% per annum for all other investments. From September 30, 2020 to April 19, 2021, the Holdings Credit Facility bore interest at a rate of LIBOR plus 2.00% per annum for Broadly Syndicated Loans (as defined in the Fourth Amendment Loan and Security Agreement) and LIBOR plus 2.50% per annum for all other investments. The Holdings Credit Facility also charges a non-usage fee, based on the unused facility amount multiplied by the Non-Usage Fee Rate (as defined in the Ninth Amendment to the Loan and Security Agreement).

The following table summarizes the interest expense, non-usage fees and amortization of financing costs incurred on the Holdings Credit Facility for the years ended December 31, 2023, December 31, 2022 and December 31, 2021.

As of December 31, 2023, December 31, 2022 and December 31, 2021, the outstanding balance on the Holdings Credit Facility was $515,063, $618,963 and $545,263, respectively, and NMF Holdings was in compliance with the applicable covenants of the Holdings Credit Facility on such dates.

NMFC Credit Facility—The Amended and Restated Senior Secured Revolving Credit Agreement, (as amended from time to time, and together with the related guarantee and security agreement, the "RCA"), dated June 4, 2021, among the Company, as the Borrower, Goldman Sachs Bank USA, as the Administrative Agent and Collateral Agent, and Goldman Sachs Bank USA, Morgan Stanley Bank, N.A., Stifel Bank & Trust and MUFG Union Bank, N.A., as Lenders (the "NMFC Credit Facility"), is structured as a senior secured revolving credit facility. The NMFC Credit Facility is guaranteed by certain of the Company's domestic subsidiaries and proceeds from the NMFC Credit Facility may be used for general corporate purposes, including the funding of portfolio investments. As of the amendment on June 4, 2021, the maturity date of the NMFC Credit Facility is June 4, 2026.

As of December 31, 2023, the maximum amount of revolving borrowings available under the NMFC Credit Facility was $198,500. The Company is permitted to borrow at various advance rates depending on the type of portfolio investment, as outlined in the RCA. All fees associated with the origination and amending of the NMFC Credit Facility are capitalized on the Company's Consolidated Statement of Assets and Liabilities and charged against income as other financing expenses over the life of the NMFC Credit Facility. The NMFC Credit Facility contains certain customary affirmative and negative covenants and events of default, including certain financial covenants related to asset coverage and liquidity and other maintenance covenants.

As of the amendment on June 29, 2023, the NMFC Credit Facility generally bears interest at a rate of SOFR plus any applicable credit spread adjustment, SONIA or EURIBOR plus 2.10% per annum or the prime rate plus 1.10% per annum, and charges a commitment fee, based on the unused facility amount multiplied by 0.375% per annum (as defined in the RCA). From June 4, 2021 to June 28, 2023, the NMFC Credit Facility generally bore interest at a rate of LIBOR, SONIA or EURIBOR plus 2.10% per annum or the prime rate plus 1.10% per annum, and charged a commitment fee, based on the unused facility amount multiplied by 0.375% per annum (as defined in the RCA). Prior to June 4, 2021, the NMFC Credit Facility bore interest at a rate of LIBOR plus 2.50% per annum or the prime rate plus 1.50% per annum, and charged a commitment fee based on the unused facility amount multiplied by 0.375% per annum (as defined in the RCA).

The following table summarizes the interest expense, non-usage fees and amortization of financing costs incurred on the NMFC Credit Facility for the years ended December 31, 2023, December 31, 2022 and December 31, 2021.

As of December 31, 2023, the outstanding balance on the NMFC Credit Facility was $36,813, which included £22,850 denominated in British Pound Sterling ("GBP") and €700 denominated in Euro ("EUR") that has been converted to U.S. dollars. As of December 31, 2022, the outstanding balance on the NMFC Credit Facility was $40,359, which included £22,850 denominated in GBP and €700 denominated in EUR that has been converted to U.S. dollars. As of December 31, 2021, the outstanding balance on the NMFC Credit Facility was $127,192, which included £16,400 denominated in GBP that has been converted to U.S. dollars. NMFC was in compliance with the applicable covenants of the NMFC Credit Facility on such dates.

Unsecured Management Company Revolver—The Uncommitted Revolving Loan Agreement (the "Uncommitted Revolving Loan Agreement"), dated March 30, 2020, by and between the Company, as the Borrower, and NMF Investments III, L.L.C., as Lender, an affiliate of the Investment Adviser (the "Unsecured Management Company Revolver"), is structured as a discretionary unsecured revolving credit facility. The proceeds from the Unsecured Management Company Revolver may be used for general corporate purposes, including the funding of portfolio investments. As of the amendment on October 31, 2023, the maturity date of the Unsecured Management Company Revolver is December 31, 2027.

As of the amendment on October 31, 2023, the Unsecured Management Company Revolver bears an interest at the Applicable Federal Rate. As of December 17, 2021 through the amendment on October 31, 2023, the Unsecured Management Company Revolver bore interest at a rate of 4.00% per annum. Prior to December 17, 2021, the Unsecured Management Company Revolver bore interest at a rate of 7.00% per annum (as defined in the Uncommitted Revolving Loan Agreement). On October 31, 2023, we entered into a Second Amended and Restated Uncommitted Revolving Loan Agreement with NMF Investments III, L.L.C., which increased the maximum amount of revolving borrowings available thereunder from $50,000 to $100,000. As of December 31, 2023, the maximum amount of revolving borrowings available under the Unsecured Management Company Revolver was $100,000 and no borrowings were outstanding. For the years ended December 31, 2023, December 31, 2022 and December 31, 2021, amortization of financing costs were $2, $14 and $11, respectively.

DB Credit Facility—The Loan Financing and Servicing Agreement (the "LFSA") dated December 14, 2018 and as amended from time to time, among NMFDB as the borrower, Deutsche Bank AG, New York Branch ("Deutsche Bank") as the facility agent, Lender and other agent from time to time party thereto and U.S. Bank National Association, as collateral agent and collateral custodian (the "DB Credit Facility"), is structured as a secured revolving credit facility. As of the amendment on October 31, 2023, the maturity date of the DB Credit Facility is March 25, 2027.

As of December 31, 2023, the maximum amount of revolving borrowings available under the DB Credit Facility was $280,000. The Company is permitted to borrow at various advance rates depending on the type of portfolio investment, as outlined in the LFSA. The DB Credit Facility is non-recourse to the Company and is collateralized by all of the investments of NMFDB on an investment by investment basis. All fees associated with the origination and amending of the DB Credit Facility are capitalized on the Company's Consolidated Statement of Assets and Liabilities and charged against income as other financing expenses over the life of the DB Credit Facility. The DB Credit Facility contains certain customary affirmative and negative covenants and events of default. The covenants are generally not tied to mark to market fluctuations in the prices of NMFDB investments, but rather to the performance of the underlying portfolio companies.

The advances under the DB Credit Facility accrue interest at a per annum rate equal to the Applicable Margin plus the lender's Cost of Funds Rate. Prior to March 25, 2021, the Applicable Margin was equal to 2.60% during the Revolving Period, increased by 0.20% per annum after the Revolving Period and then increased by 2.00% during an Event of Default (as defined in the LFSA). From March 25, 2021 to June 29, 2023, the Applicable Margin was equal to 2.35% during the Revolving Period, increased by 0.20% per annum after the Revolving Period and then increased by 2.00% during an Event of Default. From June 29, 2023 to October 31, 2023, the Applicable Margin was equal to 2.61% during the Revolving Period, increased by 0.20% per annum after the Revolving period and then increased by 2.00% per annum during an Event of Default. As of the amendment on October 31, 2023, the Applicable Margin is equal to 2.55% during the Revolving Period, increases by 0.20% per annum after the Revolving period and shall be increased by 2.00% per annum during an Even of Default. The "Cost of Funds Rate" for a conduit lender is the lower of its commercial paper rate and the Base Rate plus 0.50%, and for any other lender is the Base Rate. Effective June 29, 2023, the Base Rate is the three-months SOFR Rate. Prior to the amendment on June 29, 2023, the Base Rate was the three-months LIBOR rate. The Company is also charged a non-usage fee, based on the unused facility amount multiplied by the Undrawn Fee Rate (as defined in the LFSA) and a facility agent fee of 0.25% per annum, until the amendment on October 31, 2023, on the total facility amount. As of the amendment on October 31, 2023, the facility agent fee is 0.20% per annum on the total facility amounts.

The following table summarizes the interest expense, non-usage fees and amortization of financing costs incurred on the DB Credit Facility for the years ended December 31, 2023, December 31, 2022 and December 31, 2021.

(1)Interest expense includes the portion of the facility agent fee applicable to the drawn portion of the DB Credit Facility and non-usage fee includes the portion of the facility agent fee applicable to the undrawn portion of the DB Credit Facility.

As of December 31, 2023, December 31, 2022 and December 31, 2021 the outstanding balance on the DB Credit Facility was $186,400, $186,400 and $244,000, respectively, and NMFDB was in compliance with the applicable covenants of the DB Credit Facility on such dates.

NMNLC Credit Facility II—The Credit Agreement (together with the related guarantee and security agreement, the "NMNLC CA"), dated February 26, 2021, by and between NMNLC, as the Borrower, and City National Bank, as the Lender (the "NMNLC Credit Facility II"), is structured as a senior secured revolving credit facility. As of the amendment on November 1, 2022, NM CLFX LP has been added as a co-borrower and the NMNLC CA will mature on November 1, 2024. The NMNLC Credit Facility II is guaranteed by the Company and proceeds from the NMNLC Credit Facility II are able to be used for refinancing existing loans on properties held.

From December 7, 2021 through November 1, 2022, the NMNLC Credit Facility II bore interest at a rate of the SOFR plus 2.75% per annum with a 0.35% floor, and charged a commitment fee, based on the unused facility amount multiplied by 0.05% per annum (as defined in the NMNLC CA). As of the amendment on November 1, 2022, the NMNLC Credit Facility II bears interest at a rate of SOFR plus 2.25%.

Prior to the amendment on March 16, 2022, the maximum amount of revolving borrowings available under the NMNLC Credit Facility II was $20,000. As of the March 16, 2022 amendment and effective May 1, 2022 through November 1, 2022, the maximum amount of revolving borrowings available under the NMNLC Credit Facility II was $10,000. As of the amendment on November 1, 2022, the maximum amount of revolving borrowings available to all borrowers under the NMNLC Credit Facility II is $27,500, of which $25,408 is outstanding as of December 31, 2023.

The following table summarizes the interest expense, non-usage fees and amortization of financing costs incurred on the NMNLC Credit Facility II for the years ended December 31, 2023, December 31, 2022 and December 31, 2021.

As of December 31, 2023, December 31, 2022 and December 31, 2021, the outstanding balance on the NMNLC Credit Facility II was $2,853, $3,785 and $15,200, respectively, and NMNLC was in compliance with the applicable covenants of the NMNLC Credit Facility II on such dates.

Convertible Notes

2018 Convertible Notes—On August 20, 2018, the Company closed a registered public offering of $100,000 aggregate principal amount of unsecured convertible notes (the “2018 Convertible Notes”), pursuant to an indenture, dated August 20, 2018, as supplemented by a first supplemental indenture thereto, dated August 20, 2018 (together the “2018A Indenture”). On August 30, 2018, in connection with the registered public offering, the Company issued an additional $15,000 aggregate principal amount of the 2018 Convertible Notes pursuant to the exercise of an overallotment option by the underwriter of the 2018 Convertible Notes. On June 7, 2019, the Company closed a registered public offering of an additional $86,250 aggregate principal amount of the 2018 Convertible Notes. These additional 2018 Convertible Notes constituted a further issuance of, ranked equally in right of payment with, and formed a single series with the $115,000 aggregate principal amount of 2018 Convertible Notes that the Company issued in August 2018.

The 2018 Convertible Notes bore interest at an annual rate of 5.75%, payable semi-annually in arrears on February 15 and August 15 of each year, which commenced on February 15, 2019. The 2018 Convertible Notes matured on August 15, 2023.

On November 4, 2022, the Company launched a tender offer to purchase, upon the terms and subject to the conditions set forth in the Offer to Purchase, dated November 4, 2022, up to $201,250 aggregate principal amount of then outstanding 2018 Convertible Notes for cash in an amount equal to $1,000 per $1,000 principal amount of Notes purchased (exclusive of accrued and unpaid interest on such notes) (the "Tender Offer"). The Tender Offer expired on December 6, 2022. As of the expiration of the Tender Offer, $84,434 aggregate principal amount of the 2018 Convertible Notes were validly tendered and not validly withdrawn pursuant to the Tender Offer. The Company accepted for purchase all of the 2018 Convertible Notes that were validly tendered and not validly withdrawn at the expiration of the Tender Offer. Following settlement of the Tender Offer on December 9, 2022, approximately $116,816 aggregate principal amount of the 2018 Convertible Notes remained outstanding.

On August 15, 2023, the Company's $116,816 aggregate principal amount of 2018 Convertible Notes matured and the Company repaid the outstanding principal and accrued but unpaid interest in cash.

2022 Convertible Notes—On November 2, 2022, the Company closed a private offering of $200,000 aggregate principal amount of unsecured convertible notes (the “2022 Convertible Notes”), pursuant to an indenture, dated August 20, 2018, as supplemented by a third supplemental indenture thereto, dated November 2, 2022 (together the “2018C Indenture”). On March 14, 2023, the Company issued an additional $60,000 aggregate principal amount of the 2022 Convertible Notes. These additional 2022 Convertible Notes constitute a further issuance of, rank equally in right of payment with, and form a single series with the $200,000 aggregate principal amount of the 2022 Convertible Notes that the Company issued in November 2022.

The 2022 Convertible Notes bear interest at an annual rate of 7.50%, payable semi-annually in arrears on April 15 and October 15 of each year, commencing on April 15, 2023. The 2022 Convertible Notes will mature on October 15, 2025 unless earlier converted, repurchased or redeemed pursuant to the terms of the 2018C Indenture. The Company may not redeem the 2022 Convertible Notes prior to July 15, 2025. On or after July 15, 2025, the Company may redeem the 2022 Convertible Notes for cash, in whole or from time to time in part, at our option at a redemption price, subject to an exception for redemption dates occurring after a record date but on or prior to the interest payment date, equal to the sum of (i)100% of the principal amount of the 2022 Convertible Notes to be redeemed, (ii) accrued and unpaid interest thereon to, but excluding, the redemption date and (iii) a make-whole premium.

The following table summarizes certain key terms related to the convertible features of the Company’s 2022 Convertible Notes as of December 31, 2023.

(1)Conversion rates denominated in shares of common stock per $1 principal amount of the 2022 Convertible Notes converted.

(2)Represents conversion rate and conversion price, as applicable, taking into account certain de minimis adjustments that will be made on the conversion date.

(3)The conversion price in effect at December 31, 2023 on the 2022 Convertible Notes was last calculated on December 22, 2023.

The conversion rate will be subject to adjustment upon certain events, such as stock splits and combinations, mergers, spin-offs, increases in dividends in excess of $0.30 per share per quarter for the 2022 Convertible Notes and certain changes in control. Certain of these adjustments, including adjustments for increases in dividends, are subject to a conversion price floor of $12.38 per share for the 2022 Convertible Notes. In no event will the total number of shares of common stock issuable upon conversion exceed 80.7754 per $1 principal amount of the 2022 Convertible Notes. The Company has determined that the embedded conversion option in the 2022 Convertible Notes is not required to be separately accounted for as a derivative under GAAP.

The 2022 Convertible Notes are unsecured obligations and rank senior in right of payment to the Company’s existing and future indebtedness, if any, that is expressly subordinated in right of payment to the 2022 Convertible Notes; equal in right of payment to the Company’s existing and future unsecured indebtedness that is not so subordinated; effectively junior in right of payment to any of the Company’s secured indebtedness (including existing unsecured indebtedness that the Company later secures) to the extent of the value of the assets securing such indebtedness; and structurally junior to all existing and future indebtedness (including trade payables) incurred by the Company’s subsidiaries and financing vehicles. As reflected in Note 12. Earnings Per Share, the issuance is considered part of the if-converted method for calculation of diluted earnings per share.

The following table summarizes the interest expense, amortization of financing costs and amortization of premium incurred on the 2018 Convertible Notes and 2022 Convertible Notes (together, the "Convertible Notes") for the years ended December 31, 2023, December 31, 2022 and December 31, 2021.

(1)For the year ended December 31, 2022, amounts reported include interest and amortization of financing costs related to the 2022 Convertible Notes for the period from November 2, 2022 (issuance of the 2022 Convertible Notes) to December 31, 2022.

As of December 31, 2023, December 31, 2022 and December 31, 2021, the outstanding balance on the 2022 Convertible Notes was $260,000, $200,000 and $0, respectively. As of December 31, 2023, December 31, 2022 and December 31, 2021, the outstanding balance on the 2018 Convertible Notes was $0, $116,816 and $201,250, respectively. The Company was in compliance with the terms of the 2018A Indenture and 2018C Indenture on such dates.

Unsecured Notes

On May 6, 2016, the Company issued $50,000 in aggregate principal amount offive-year unsecured notes (the “2016 Unsecured Notes”), pursuant to a note purchase agreement, dated May 4, 2016, to an institutional investor in a private placement. On September 30, 2016, the Company entered into an amended and restated note purchase agreement (the "NPA") and issued an additional $40,000 in aggregate principal amount of 2016 Unsecured Notes to institutional investors in a private placement. On February 16, 2021, the Company repaid all $90,000 in aggregate principal amount of the issued and outstanding 2016 Unsecured Notes. On June 30, 2017, the Company issued $55,000 in aggregate principal amount offive-year unsecured notes that matured on July 15, 2022 (the "2017A Unsecured Notes"), pursuant to the NPA and a supplement to the NPA. On July 15, 2022, the Company caused notices to be issued to holders of the Company's 2017A Unsecured Notes regarding the exercise of the Company's option to repay all of the Company's $55,000 in aggregate principal amount of issued and outstanding 2017A Unsecured Notes, which was repaid on July 14, 2022. On January 30, 2018, the Company issued $90,000 in aggregate principal amount offive year unsecured notes that matured on January 30, 2023 (the "2018A Unsecured Notes") pursuant to the NPA and a second supplement to the NPA. On January 30, 2023, the Company caused notices to be issued to holders of the Company's 2018A Unsecured Notes regarding the exercise of the Company's option to repay all of the Company's $90,000 in aggregate principal amount of issued and outstanding 2018A Unsecured Notes, which was repaid on January 27, 2023. On July 5, 2018, the Company issued $50,000 in aggregate principal amount offive year unsecured notes that matured on June 28, 2023 (the "2018B Unsecured Notes") pursuant to the NPA and a third supplement to the NPA (the "Third Supplement"). On June 28, 2023, the Company caused notices to be issued to holders of the Company's 2018B Unsecured Notes regarding the exercise of the Company's option to repay all of the Company's $50,000 in aggregate principal amount of issued and outstanding 2018B Unsecured Notes, which was repaid on June 27, 2023. On April 30, 2019, the Company issued $116,500 in aggregate principal amount offive year unsecured notes that mature on April 30, 2024 (the "2019A Unsecured Notes") pursuant to the NPA and a fourth supplement to the NPA (the "Fourth Supplement"). On February 5, 2024, the Company fully repaid $116,500 in aggregate principal amount of issued and outstanding 2019A Unsecured Notes. See Note 15. Subsequent Events, for details. On January 29, 2021, the Company issued $200,000 in aggregate principal amount offive year unsecured notes that mature on January 29, 2026 (the "2021A Unsecured Notes") pursuant to the NPA and a fifth supplement to the NPA (the "Fifth Supplement"). On June 15, 2022, the Company issued $75,000 in aggregate principal amount offive year unsecured notes that mature on June 15, 2027 (the "2022A Unsecured Notes") pursuant to the NPA and a sixth supplement to the NPA (the "Sixth Supplement"). The NPA provides for future issuances of unsecured notes in separate series or tranches.

The 2016 Unsecured Notes bore interest at an annual rate of 5.313%, payable semi-annually on May 15 and November 15 of each year. The 2017A Unsecured Notes bore interest at an annual rate of 4.760%, payable semi-annually on January 15 and July 15 of each year. The 2018A Unsecured Notes bore interest at an annual rate of 4.870%, payable semi-annually on February 15 and August 15 of each year. The 2018B Unsecured Notes bore interest at an annual rate of 5.360%, payable semi-annually on January 15 and July 15 of each year. The 2019A Unsecured Notes bear interest at an annual rate of 5.494%, payable semi-annually on April 15 and October 15 of each year. The 2021A Unsecured Notes bear interest at an annual rate of 3.875%, payable semi-annually in arrears on January 29 and July 29 of each year. The 2022A Unsecured Notes bear interest at an annual rate of 5.900%, payable semi-annually in arrears on June 15 and December 15 of each year, which commenced on December 14, 2022. These interest rates are subject to increase in the event that: (i) subject to certain exceptions, the underlying unsecured notes or the Company ceases to have an investment grade rating or (ii) the aggregate amount of the Company’s unsecured debt falls below $150,000. In each such event, the Company has the option to offer to prepay the underlying unsecured notes at par, in which case holders of the underlying unsecured notes who accept the offer would not receive the increased interest rate. In addition, the Company is obligated to offer to prepay the underlying unsecured notes at par if the Investment Adviser, or an affiliate thereof, ceases to be the Company’s investment adviser or if certain change in control events occur with respect to the Investment Adviser.

The NPA contains customary terms and conditions for unsecured notes issued in a private placement, including, without limitation, an option to offer to prepay all or a portion of the unsecured notes under its governance at par (plus a make-whole amount, if applicable), affirmative and negative covenants such as information reporting, maintenance of the Company’s status as a BDC under the 1940 Act and a RIC under the Code, minimum stockholders’ equity, minimum asset coverage ratio, and prohibitions on certain fundamental changes at the Company or any subsidiary guarantor, as well as customary events of default with customary cure and notice, including, without limitation, nonpayment, misrepresentation in a material respect, breach of covenant, cross-default under other indebtedness of the Company or certain significant subsidiaries, certain judgments and orders, and certain events of bankruptcy. The Third Supplement, Fourth Supplement, Fifth Supplement and Sixth Supplement all include additional financial covenants related to asset coverage as well as other terms.

On November 13, 2023, the Company closed a registered public offering of $115,000 in aggregate principal amount of 8.250% Unsecured Notes that mature on November 15, 2028 (the "8.250% Unsecured Notes", together with the 2019A Unsecured Notes, 2021A Unsecured Notes and 2022A Unsecured Notes, the "Unsecured Notes"), pursuant to a base indenture and fourth supplemental indenture thereto dated November 13, 2023 (the "Indenture") between us and U.S. Bank Trust Company, National Association (as successor in interest to U.S. Bank National Association), as trustee.

The 8.250% Unsecured Notes bear interest at an annual rate of 8.250%, payable quarterly on February 15, May 15, August 15 and November 15 of each year, beginning on February 15, 2024. The 8.250% Unsecured Notes are listed on NASDAQ Global Select Market and trade under the trading symbol "NMFCZ".

The Company may redeem the 8.250% Unsecured Notes, in whole or in part, at any time, or from time to time, at its option on or after November 15, 2025 at the redemption price of par, plus accrued interest.

No sinking fund provision is provided for the 8.250% Unsecured Notes and holders of the 8.250% Unsecured Notes have no option to have their 8.250% Unsecured Notes repaid prior to the stated maturity date.

The Unsecured Notes are unsecured obligations and rank senior in right of payment to the Company’s existing and future indebtedness, if any, that is expressly subordinated in right of payment to the Unsecured Notes; equal in right of payment to the Company’s existing and future unsecured indebtedness that is not so subordinated; effectively junior in right of payment to any of the Company’s secured indebtedness (including existing unsecured indebtedness that the Company later secures) to the extent of the value of the assets securing such indebtedness; and structurally junior to all existing and future indebtedness (including trade payables) incurred by the Company’s subsidiaries and financing vehicles.

The following table summarizes the interest expense and amortization of financing costs incurred on the Unsecured Notes for the years ended December 31, 2023, December 31, 2022 and December 31, 2021.

(1)For the year ended December 31, 2023, amounts reported include interest and amortization of financing costs related to the 8.250% Unsecured Notes for the period from November 13, 2023 (issuance date of the 8.250% Unsecured Notes ) to December 31, 2023.

(2)For the year ended December 31, 2022, amounts reported include interest and amortization of financing costs related to the 2022A Unsecured Notes for the period from June 15, 2022 (issuance date of the 2022A Unsecured Notes) to December 31, 2022.

(3)For the year ended December 31, 2021, amounts reported include interest and amortization of financing costs related to the 2021A Unsecured Notes for the period from January 29, 2021 (issuance date of the 2021A Unsecured Notes) to December 31, 2021.

As of December 31, 2023, December 31, 2022 and December 31, 2021, the outstanding balance on the Unsecured Notes was $506,500, $531,500 and $511,500, respectively, and the Company was in compliance with the terms of the NPA and the Indenture as of such dates, as applicable.

SBA-guaranteed debentures—On August 1, 2014 and August 25, 2017, respectively, SBIC I and SBIC II received licenses from the SBA to operate as SBICs.

These SBIC licenses allow each of SBIC I and SBIC II to obtain leverage by issuing SBA-guaranteed debentures, subject to the issuance of a capital commitment by the SBA and other customary procedures. SBA-guaranteed debentures are non-recourse to the Company, interest only debentures with interest payable semi-annually and have aten year maturity. The principal amount of SBA-guaranteed debentures is not required to be paid prior to maturity but may be prepaid at any time without penalty. The interest rate of SBA-guaranteed debentures is fixed on a semi-annual basis at a market-driven spread over U.S. Treasury Notes with ten year maturities. The SBA, as a creditor, will have a superior claim to the assets of SBIC I and SBIC II over the Company's stockholders in the event SBIC I and SBIC II are liquidated or the SBA exercises remedies upon an event of default.

The maximum amount of borrowings available under current SBA regulations for a single licensee is $150,000 as long as the licensee has at least $75,000 in regulatory capital, receives a capital commitment from the SBA and has been through an examination by the SBA subsequent to licensing. In June 2018, legislation amended the 1958 Act by increasing the individual leverage limit from $150,000 to $175,000, subject to SBA approvals.

As of December 31, 2023 and December 31, 2022, SBIC I had regulatory capital of $75,000 and $75,000, respectively, and SBA-guaranteed debentures outstanding of $150,000 and $150,000, respectively. As of December 31, 2023 and December 31, 2022, SBIC II had regulatory capital of $75,000 and $75,000, respectively, and $150,000 and $150,000, respectively, of SBA-guaranteed debentures outstanding. The SBA-guaranteed debentures incur upfront fees of 3.435%, which consists of a 1.00% commitment fee and a 2.435% issuance discount, which are amortized over the life of the SBA-guaranteed debentures.

The following table summarizes the Company’s SBA-guaranteed debentures as of December 31, 2023.

(1)SBA-guaranteed debentures are held by SBIC I.

(2)SBA-guaranteed debentures are held by SBIC II.

Prior to pooling, the SBA guaranteed debentures bear interest at an interim interest rate equal to the Federal Home Loan Bank of Chicago's Fixed Regular Advance Rate (Bank Advance Rate), plus 41 basis points. Once pooled, which occurs in March and September each year, the SBA-guaranteed debentures bear interest at a fixed rate that is set to the current 10-year treasury rate plus a spread at each pooling date.

The following table summarizes the interest expense and amortization of financing costs incurred on the SBA-guaranteed debentures for the years ended December 31, 2023, December 31, 2022 and December 31, 2021.

The SBIC program is designed to stimulate the flow of private investor capital into eligible small businesses, as defined by SBA regulations that, among other things: require SBICs to invest in eligible small businesses and invest at least 25.0% of investment capital in eligible smaller enterprises (as defined by the SBA regulations), place certain limitations on the financing terms of investments, regulate the types of financing provided by an SBIC, prohibit investments in small businesses with certain characteristics or in certain industries and require capitalization thresholds that limit distributions to us. SBICs are subject to an annual periodic examination by an SBA examiner to determine the SBIC's compliance with the relevant SBA regulations and an annual financial audit of its financial statements that are prepared on a basis of accounting other than GAAP (such as ASC 820) by an independent auditor. As of December 31, 2023, December 31, 2022 and December 31, 2021, SBIC I and SBIC II were in compliance with SBA regulatory requirements.

Leverage risk factors—The Company utilizes and may utilize leverage to the maximum extent permitted by the law for investment and other general business purposes. The Company's lenders will have fixed dollar claims on certain assets that are superior to the claims of the Company's common stockholders, and the Company would expect such lenders to seek recovery against these assets in the event of a default. The use of leverage also magnifies the potential for gain or loss on amounts invested. Leverage may magnify interest rate risk (particularly on the Company's fixed-rate investments), which is the risk that the prices of portfolio investments will fall or rise if market interest rates for those types of securities rise or fall. As a result, leverage may cause greater changes in the Company's net asset value. Similarly, leverage may cause a sharper decline in the Company's income than if the Company had not borrowed. Such a decline could negatively affect the Company's ability to make distributions to its stockholders. Leverage is generally considered a speculative investment technique. The Company's ability to service any debt incurred will depend largely on financial performance and will be subject to prevailing economic conditions and competitive pressures.

Note 8. Regulation

The Company has elected to be treated, and intends to comply with the requirements to continue to qualify annually, as a RIC under Subchapter M of the Code. In order to continue to qualify and be subject to tax treatment as a RIC, among other things, the Company is generally required to timely distribute to its stockholders at least 90.0% of its investment company taxable income, as defined by the Code, for each year. The Company, among other things, intends to make and will continue to make the requisite distributions to its stockholders, which will generally relieve the Company from U.S. federal, state, and local income taxes (excluding excise taxes which may be imposed under the Code).

Additionally, as a BDC, the Company must not acquire any assets other than "qualifying assets" as defined in Section 55(a) of the 1940 Act unless, at the time the acquisition is made, at least 70.0% of its total assets are qualifying assets (with certain limited exceptions). In addition, the Company must offer to make available to all "eligible portfolio companies" (as defined in the 1940 Act) significant managerial assistance.

Note 9. Commitments and Contingencies

In the normal course of business, the Company may enter into contracts that contain a variety of representations and warranties and which provide general indemnifications. The Company may also enter into future funding commitments such as revolving credit facilities, bridge financing commitments or delayed draw commitments. As of December 31, 2023, the Company had unfunded commitments on revolving credit facilities of $112,803, no outstanding bridge financing commitments and other future funding commitments of $43,948. As of December 31, 2022, the Company had unfunded commitments on revolving credit facilities of $100,315, no outstanding bridge financing commitments and other future funding commitments of $123,748. The unfunded commitments on revolving credit facilities and delayed draws are disclosed on the Company's Consolidated Schedules of Investments.

The Company also had revolving borrowings available under the Holdings Credit Facility, the DB Credit Facility, the NMFC Credit Facility, the Unsecured Management Company Revolver and the NMNLC Credit Facility II as of December 31, 2023 and December 31, 2022. See Note 7. Borrowings, for details.

The Company may from time to time enter into financing commitment letters. As of December 31, 2023 and December 31, 2022, the Company had commitment letters to purchase investments in the aggregate par amount of $11,105 and $45,634, respectively, which could require funding in the future.

Note 10. Distributions

Differences between taxable income and the results of operations for financial reporting purposes may be permanent or temporary in nature. Permanent differences are reclassified among capital accounts in the financial statements to reflect their tax character. Differences in classification may also result from the treatment of short-term gains as ordinary income for tax purposes. During the years ended December 31, 2023, December 31, 2022 and December 31, 2021, the Company's reclassifications of amounts for book purposes arising from permanent book/tax differences primarily related to return of capital distributions were as follows:

For U.S. federal income tax purposes, distributions paid to stockholders of the Company are reported as ordinary income, return of capital, long term capital gains or a combination thereof. The tax character of distributions paid by the

Company for the years ended December 31, 2023, December 31, 2022 and December 31, 2021 were estimated to be as follows:

As of December 31, 2023, December 31, 2022 and December 31, 2021, the costs of investments for the Company for tax purposes were $2,927,312, $3,209,491 and $3,114,145, respectively.

(1)Includes securities purchased under collateralized agreement to resell.

(2)Excludes investments attributable to non-controlling interest in NMNLC.

At December 31, 2023, December 31, 2022 and December 31, 2021, the components of distributable earnings on a tax basis differ from the amounts reflected per the Company's Consolidated Statements of Assets and Liabilities by temporary book/tax differences primarily arising from differences between the tax and book basis of the Company's investment in securities held directly as well as through undistributed income.

As of December 31, 2023, December 31, 2022 and December 31, 2021, the Company's components of accumulated earnings (deficit) on a tax basis were as follows:

The Company is subject to a 4.0% nondeductible U.S. federal excise tax on certain undistributed income unless the Company distributes, in a timely manner as required by the Code, an amount at least equal to the sum of (1) 98.0% of its net ordinary income earned for the calendar year and (2) 98.2% of its capital gain net income for the one-year period ending October 31 in the calendar year. For the year ended December 31, 2023, the Company does not expect to incur any excise taxes. For the years ended December 31, 2022 and December 31, 2021, the Company did not incur any excise taxes.

The following information is hereby provided with respect to distributions declared during the calendar years ended December 31, 2023, December 31, 2022 and December 31, 2021:

(1) Represents the portion of the taxable ordinary dividends eligible for exemption from U.S. withholding tax for

nonresident aliens and foreign corporations.

Dividends and distributions that were reinvested through the Company’s dividend reinvestment plan are treated, for tax purposes, as if they had been paid in cash. Therefore, stockholders who participated in the dividend reinvestment plan should also refer to the information as provided in the table above.

Note 11. Net Assets

The table below illustrates the effect of certain transactions on the net asset accounts of the Company during the years ended December 31, 2023, December 31, 2022 and December 31, 2021:

On November 3, 2021, the Company entered into an equity distribution agreement, as amended on May 18, 2023 and August 23, 2023 (the “Distribution Agreement”) with B. Riley Securities, Inc. and Raymond James & Associates, Inc. (collectively, the “Agents”). The Distribution Agreement provides that the Company may issue and sell its shares from time to time through the Agents, up to $250,000 worth of its common stock by means of at-the-market ("ATM") offerings.

For the year ended December 31, 2023, the Company sold 1,621,833 shares of common stock under the Distribution Agreement. For the same period, the Company received total accumulated net proceeds of approximately $21,241, including $0 of offering expenses, from these sales. For the year ended December 31, 2022, the Company sold 2,950,300 shares of common stock under the Distribution Agreement. For the same period, the Company received total accumulated net proceeds of approximately $40,007, including $439 of offering expenses, from these sales. For the year ended December 31, 2021, the Company sold 914,175 shares of common stock under the Distribution Agreement. For the same period, the Company received total accumulated net proceeds of approximately $12,427, including $189 of offering expenses, from these sales.

The Company generally uses net proceeds from these offerings to make investments, to pay down liabilities and for general corporate purposes. As of December 31, 2023, December 31, 2022 and December 31, 2021, shares representing approximately $175,694, $196,938 and $237,384, respectively, of its common stock remain available for issuance and sale under the Distribution Agreement.

Note 12. Earnings Per Share

The following information sets forth the computation of basic and diluted net increase in the Company's net assets per share resulting from operations for the years ended December 31, 2023, December 31, 2022 and December 31, 2021:

(1)In applying the if-converted method, conversion is not assumed for purposes of computing diluted earnings per share if the effect would be anti-dilutive. For the years ended December 31, 2023, December 31, 2022 and December 31, 2021, there was no anti-dilution.

Note 13. Financial Highlights

The following information sets forth the Company's financial highlights for the years ended December 31, 2023, December 31, 2022, December 31, 2021, December 31, 2020 and December 31, 2019.

(1)Per share data is based on weighted average shares outstanding for the respective period (except for distributions declared to stockholders which is based on actual rate per share).

(2)Includes the effect of common stock issuances per share, which for the years ended December 31, 2023, December 31, 2022, December 31, 2021, December 31, 2020 and December 31, 2019 were $0.00, $0.01, $(0.01), $0.00 and $0.08, respectively.

(3)Total return is calculated assuming a purchase of common stock at the opening of the first day of the year and a sale on the closing of the last business day of the period. Dividends and distributions, if any, are assumed for purposes of this calculation, to be reinvested at prices obtained under the Company's dividend reinvestment plan. Total return does not reflect sales load.

(4)Total return is calculated assuming a purchase at net asset value on the opening of the first day of the year and a sale at net asset value on the last day of the period. Dividends and distributions, if any, are assumed for purposes of this calculation, to be reinvested at the net asset value on the last day of the respective quarter. Total return does not reflect sales load.

(5)For the year ended December 31, 2023, average debt outstanding includes the 2018A Unsecured Notes for the period from January 1, 2023 to January 30, 2023 (repayment of the 2018A Unsecured Notes), the 2018B Unsecured Notes for the period from January 1, 2023 to June 28, 2023 (repayment of the 2018B Unsecured Notes) and the 8.250% Unsecured Notes for the period from November 13, 2023 (issuance of the 8.250% Unsecured Notes) to December 31, 2023. For the year ended December 31, 2022, average debt outstanding includes the 2017A Unsecured Notes for the period from January 1, 2022 to July 14, 2022 (repayment of the 2017A Unsecured Notes).

(6)For the year ended December 31, 2023, average debt outstanding includes the 2018 Convertible Notes for the period from January 1, 2023 to August 15, 2023 (repayment of the 2018 Convertible Notes). For the year ended December 31, 2022, average debt outstanding includes the 2022 Convertible Notes for the period from November 2, 2022 (issuance of the 2022 Convertible Notes) to December 31, 2022.

(7)Under the NMFC Credit Facility, the Company may borrow in U.S. dollars or certain other permitted currencies. As of December 31, 2023, the Company had borrowings denominated in GBP of £22,850 and borrowings denominated in EUR of €700 that has been converted to U.S. dollars. As of December 31, 2022, the Company had borrowings denominated in GBP of £22,850 and borrowings denominated in EUR of €700 that has been converted to U.S. dollars. As of December 31, 2021, the Company had borrowings denominated in GBP of £16,400 that has been converted to U.S. dollars.

(8)For the year ended December 31, 2021, average debt outstanding represents the period from February 26, 2021 (commencement of the NMNLC Credit Facility II) to December 31, 2021.

(9)For the year ended December 31, 2020, average debt outstanding represents the period from January 1, 2020 to September 23, 2020 (maturity of the NMNLC Credit Facility).

(10)On November 5, 2014, the Company received exemptive relief from the SEC allowing the Company to modify the asset coverage requirement to exclude the SBA-guaranteed debentures from this calculation.

Senior Securities

Information about our senior securities as of December 31, 2023, 2022, 2021, 2020, 2019, 2018, 2017, 2016, 2015 and 2014 are shown in the following table

(1)The company has excluded the SBA-guaranteed debentures from this table as a result of the SEC exemptive relief that permits the Company to exclude such debentures from the definition of senior securities in the 150.0% asset coverage ratio that are required to maintain under the 1940 Act. At December 31, 2023, December 31, 2022, December 31, 2021, December 31, 2020, December 31, 2019, December 31, 2018, December 31, 2017, December 31, 2016, December 31, 2015 and December 31, 2014, the Company had $300.0 million, $300.0 million, $300.0 million,$300.0 million, $225.0 million, $165.0 million, $150.0 million, $121.7 million, $117.7 million and $37.5 million, respectively, in SBA-guaranteed debentures outstanding. Total asset coverage per unit including the SBA-guaranteed debentures as of December 31, 2023, December 31, 2022, December 31, 2021, December 31, 2020, December 31, 2019, December 31, 2018, December 31, 2017, December 31, 2016, December 31, 2015 and December 31, 2014 is $1,730, $1,658, $1,686, $1,673, $1,655, $1,718, $2,169, $2,320, $2,128 and $2,196, respectively, and unchanged for the prior years.

(2)Total amount of each class of senior securities outstanding at the end of the period presented.

(3)Asset coverage per unit is the ratio of the carrying value of our total assets, less all liabilities excluding indebtedness represented by senior securities in this table, to the aggregate amount of senior securities representing indebtedness. Asset coverage per unit is expressed in terms of dollar amounts per $1,000 of indebtedness and is calculated on a consolidated basis.

(4)The amount to which such class of senior security would be entitled upon the voluntary liquidation of the issuer in preference to any security junior to it. The "—" in this column indicates that the SEC expressly does not require this information to be disclosed for certain types of senior securities.

(5)Not applicable for any of the senior securities (except the 5.75% Unsecured Notes and the 8.250% Unsecured Notes) as they were not registered for public trading. For the 5.75% Unsecured Notes, the amounts represent the average of the daily closing prices on the New York Stock Exchange, or NASDAQ, as applicable, for (a) the period from September 28, 2018 (date of listing) through December 31, 2018, with respect to the year ended December 31, 2018, (b) the entire 2019 fiscal year, with respect to the year ended December 31, 2019 (c) the entire 2020 fiscal year, with respect to the year ended December 31, 2020. On March 8, 2021, the 5.75% Unsecured Notes were redeemed. For the 8.250% Unsecured Notes, the amounts represent the average of the daily closing prices on NASDAQ from the period from November 24, 2023 through December 31, 2023 with respect to the year ended December 31, 2023.

(6)Under the NMFC Credit Facility, the Company may borrow in U.S. dollars or certain other permitted currencies. As of December 31, 2023, the Company had borrowings denominated in GBP of £22.9 million and in EUR of €0.7 million that have been converted to U.S. dollars. As of December 31, 2022, the Company had borrowings denominated in GBP of £22.9 million and in EUR of €0.7 million that has been converted to U.S. dollars. As of December 31, 2021, the Company had borrowing denominated in GBP of £16.4 million and in EUR of €0.0 million that has been converted to U.S. dollars.

Note 14. Recent Accounting Standards Updates

In March 2020, the Financial Accounting Standards Board (the "FASB") issued ASU 2020-04, Reference Rate Reform. The amendments in ASU 2020-04 provide optional expedients and exceptions for applying GAAP to contracts, hedging relationships, and other transactions affected by reference rate reform if certain criteria are met. The standard was effective as of March 12, 2020 through December 31, 2022. Management is currently evaluating the impact of the optional guidance on the Company's consolidated financial statements and disclosures. The Company did not utilize the optional expedients and exceptions provided by ASU 2020-04 during the year ended December 31, 2023. In December 2022, the FASB issued ASU No. 2022-06, Reference Rate Reform (Topic 848): Deferral of the Sunset Date of Topic 848, which deferred the sunset day of this guidance to December 31, 2024. The Company is currently evaluating the impact of this guidance on its consolidated financial statements.

In December 2020, the U.S. Securities and Exchange Commission (the “SEC”) adopted a rule providing a framework for fund valuation practices. Rule 2a-5 under the 1940 Act (“Rule 2a-5”) establishes requirements for determining fair value in good faith for purposes of the 1940 Act. Rule 2a-5 permits boards, subject to board oversight and certain other conditions, to designate certain parties to perform fair value determinations. Rule 2a-5 also defines when market quotations are “readily available” for purposes of the 1940 Act and the threshold for determining whether a fund must determine the fair value of a security. The SEC also adopted Rule 31a-4 under the 1940 Act (“Rule 31a-4”), which provides the recordkeeping requirements associated with fair value determinations. Finally, the SEC rescinded previously issued guidance on related issues, including the role of the board in determining fair value and the accounting and auditing of fund investments. Rule 2a-5 and Rule 31a-4 became effective on March 8, 2021, and had a compliance date of September 8, 2022. While the Company's board of directors has not elected to designate the Investment Adviser as the valuation designee, the Company has adopted certain revisions to its valuation policies and procedures in order comply with the applicable requirements of Rule 2a-5 and Rule 31a-4.

Note 15. Subsequent Events

On January 25, 2024, the Company caused notices to be issued to holders of the Company's 2019A Unsecured Notes regarding the exercise of the Company's option to repay all of the Company's $116,500 in aggregate principal amount of issued and outstanding 2019A Unsecured Notes, which was repaid on February 5, 2024.

On January 30, 2024, the Company's board of directors declared a first quarter 2024 distribution of $0.32 per share and a supplemental distribution related to fourth quarter earnings of $0.04 per share, each payable on March 29, 2024 to holders of record as of March 15, 2024.

On February 1, 2024, the Company issued $300,000 in aggregate principal amount of its 6.875% notes due 2029 (the "2029 Unsecured Notes") for net proceeds of $293,892 after deducting underwriting commissions of $3,000. Offering costs incurred were approximately $900. Interest on the 2029 Unsecured Notes will be paid semi-annually in arrears on February 1 and August 1 at a rate of 6.875% per year, beginning on August 1, 2024, to holders of record as of the close of business on January 15 or July 15 (whether or not a business day), as the case may be, immediately preceding the relevant interest payment date. The 2029 Unsecured Notes may be redeemed in whole or in part at the Company’s option at any time prior to January 1, 2029, at par plus a “make-whole” premium, and thereafter at par, plus accrued interest.