FIRSTSUN CAPITAL BANCORP

($ in thousands, except share and per share amounts)

NOTE 1 -Organization and Basis of Presentation

Nature of Operations - The consolidated financial statements include the accounts of FirstSun Capital Bancorp (“FirstSun” or “Parent Company”) and its wholly-owned subsidiaries, Sunflower Bank, N.A. (the“Bank”), FirstSun Advisors, and FEIF Capital Partners, LLC, and have been prepared using U.S. generally accepted accounting principles (“GAAP”) and prevailing practices in the banking industry. All significant intercompany balances and transactions have been eliminated. These entities are collectively referred to as “our”, “us”, “we”, or “the Company”.

Basis of Presentation - The consolidated financial statements in this Quarterly Report on Form 10-Q have been prepared in accordance with GAAP for interim financial information, but do not include all of the information and footnotes required by GAAP for a full year presentation and certain disclosures have been condensed or omitted in accordance with rules and regulations of the SEC. These interim financial statements are unaudited, and include, in our opinion, all adjustments necessary for a fair statement of the results for the periods indicated, which are not necessarily indicative of results which may be expected for the full year. These unaudited consolidated financial statements and notes should be read in conjunction with FirstSun’s audited consolidated financial statements and footnotes thereto for the year ended December 31, 2025, included in our 2025 Annual Report. See Note 1 - Basis of Presentation, Description of Business and Summary of Significant Accounting Policies in the Notes to the Consolidated Financial Statements contained in Item 8, Financial Statements and Supplementary Data, in the Company’s 2025 Form 10-K and this Note 1 for additional information on the Company’s significant accounting policies. There have not been any significant changes to the Company’s accounting policies from those disclosed in the Company’s 2025 Form 10-K that could have a material effect on the Company’s financial statements, except as discussed below. The accounting policy on Loans Receivable, specifically with respect to acquired loans, is updated below to include additional guidance following the Company’s early adoption of ASU 2025‑08,“Financial Instruments - Credit Losses (Topic 326): Purchased Loans” in connection with its acquisition of First Foundation Inc.

Business Combination - On April 1, 2026, FirstSun completed its previously announced acquisition of First Foundation Inc. (“First Foundation”), pursuant to the Agreement and Plan of Merger dated October 27, 2025, by and between FirstSun and First Foundation, as amended (the “Merger Agreement”). At the effective time of the merger (the “Effective Time”), First Foundation merged with and into FirstSun, with FirstSun surviving the merger. Immediately following the merger, First Foundation Bank, a California-chartered banking corporation and wholly owned subsidiary of First Foundation, merged with and into the Bank, with the Bank continuing as the surviving bank. Further information is presented in Note 2 - Acquisition of First Foundation Inc.

Use of Estimates - The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions based on available information. These estimates and assumptions affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.

These estimates are based on historical experience and on various assumptions about the future that are believed to be reasonable based on all available information. Our reported financial position or results of operations may be materially different under changed conditions or when using different estimates and assumptions, particularly with respect to critical accounting policies. In the event that estimates or assumptions prove to differ from actual results, adjustments are made in subsequent periods to reflect more current information.

Reclassifications - Some items in the prior year financial statements were reclassified to conform to the current presentation. Previously, deposit amounts related to certain NOW accounts with limited monthly transaction activity were able to be reclassified to money market accounts to reduce reserve requirements at the Federal Reserve. As there is no longer any impact to reserve requirements across different deposit products, we have discontinued this product reclassification practice and have revised the presentation of those deposits to conform to the current presentation for periods prior to March 31, 2026. Reclassifications had no effect on prior years’ net income or stockholders’ equity.

Accounting Pronouncements Recently Adopted - As an “emerging growth company” under Section 107 of the JOBS Act, we can take advantage of the extended transition period provided in Section 7(a)(2)(B) of the Securities Act for complying with new or revised accounting standards. Therefore, we can delay the adoption of certain accounting standards until those standards would otherwise apply to non-public business entities. We intend to take advantage of the benefits of this extended transition period for an “emerging growth company” for as long as it is available to us. For standards that we have delayed adoption, we may lack comparability to other companies who have adopted such standards.

ASU No. 2025-05,“Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses for Accounts Receivable and Contract Assets.” ASU 2025-05 provides all entities, when developing reasonable and supportable forecasts as part of estimating expected credit losses on current accounts receivable and/or current contract assets arising from transactions under ASC Topic 606 - Revenue from Contracts with Customers, a practical expedient whereby entities can assume that current conditions as of the balance sheet date do not change for the remaining life of the asset. ASU 2025-05 became effective for us in 2026 and did not have a significant impact on our financial statements.

ASU 2025‑08,“Financial Instruments - Credit Losses (Topic 326): Purchased Loans.” The amendments in ASU 2025-08 amend the guidance in ASC 326 to expand and clarify the accounting for acquired loans, including “purchased seasoned loans,” with the objective of addressing concerns about complexity and potential double counting of expected credit losses in acquisition accounting. ASU 2025-08 requires entities to apply the amendments prospectively to loans acquired on or after the initial application date and does not require retrospective restatement of prior periods. The amendments in this update are effective for annual reporting periods beginning after December 15, 2026, including interim periods within those annual periods, and early adoption is permitted in an interim or annual reporting period in which financial statements have not yet been issued or made available for issuance. The Company early adopted the provisions of ASU 2025-08 in connection with its acquisition of First Foundation, which was completed on April 1, 2026. The Company applied the guidance prospectively to loans acquired in the transaction and will apply the updated guidance to any subsequent acquisitions occurring on or after initial adoption. Early adoption of ASU 2025-08 affected the timing and measurement of expected credit losses for acquired performing loans. The impact from adoption is included in the accompanying footnotes.

Updates to our Significant Accounting Policies

Loans Receivable

Acquired Loans – Loans acquired through a purchase or a business combination are recorded at their fair value as of the acquisition date.

Purchased Credit Deteriorated (“PCD”) Loans. Management performs an assessment of acquired loans to first determine if such loans have experienced a more than insignificant deterioration in credit quality since their origination and thus should be classified and accounted for as PCD loans using a gross-up method where the sum of the loan’s purchase price and allowance for credit losses (“ACL”) becomes its initial amortized cost basis. At acquisition, the ACL for PCD loans is measured in accordance with the Company’s credit loss methodology and is added to the purchase price to establish the initial amortized cost basis under the gross-up approach. Any difference between the amortized cost basis and the unpaid principal balance of the loans is considered to be a non-credit discount or premium. This non-credit discount or premium is accreted or amortized into interest income using the interest method. Subsequent to acquisition, the ACL for PCD loans is determined pursuant to the Bank’s ACL methodology in the same manner as all other loans. Characteristics of PCD loans include the following: delinquency, payment history since origination, credit scores migration and/or other factors the Bank may become aware of through its initial analysis of acquired loans that may indicate there has been a more than insignificant deterioration in credit quality since a loan’s origination.

Purchased Seasoned Loans. Loans acquired that have not experienced a more than insignificant deterioration in credit quality since origination are deemed purchased seasoned loans (“PSLs”) and are accounted for using the gross-up approach at acquisition described above for PCD loans. All non-PCD loans that are acquired in a business combination are deemed PSLs. Other non-PCD loans are PSLs if they were purchased at least 90 days after origination and the acquirer was not involved in the origination of the loans. At acquisition, the ACL for PSLs is measured in accordance with the Company’s credit-loss methodology and is added to the purchase price to establish the initial amortized cost basis under the gross-up approach. Any difference between the amortized cost basis and the unpaid principal balance of the loans is considered to be a non-credit discount or premium. This non-credit discount or premium is accreted or amortized into interest income using the interest method. Subsequent to acquisition, the ACL for PSLs is determined pursuant to the Bank’s ACL methodology in the same manner as all other loans.

Non-Purchased Credit Deteriorated (non-PCD) Loans. Before the Company’s adoption of ASU 2025-08, Financial Instruments - Credit Losses (Topic 326): Purchased Loansin connection with the First Foundation acquisition on April 1, 2026, acquired loans that are not deemed to have experienced a more-than-insignificant credit deterioration since origination are considered non-PCD. Non-PCD loans are recorded at fair value, with any resulting discount or premium accreted or amortized into interest income over the remaining life of the loan using the interest method. Additionally, upon the purchase or acquisition of non-PCD loans, management measures and records an allowance for credit losses based on the Bank’s methodology for determining the ACL. The ACL for non-PCD loans is recorded through a charge to the provision for credit losses in the period in which the loans are purchased or acquired. Subsequent to acquisition, the allowance for credit losses for non-PCD loans is determined pursuant to the Bank’s ACL methodology in the same manner as all other loans.

Recent Accounting Pronouncements Not Yet Adopted - ASU No. 2024-03,“Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses.” ASU 2024-03 requires public business entities to provide additional disclosures about certain expenses included in the income statement. The amendments require disclosure, in tabular format, of prescribed expense categories included within relevant income statement expense captions, including, among other items, employee compensation, depreciation, and intangible asset amortization. The amendments also require disclosure of selling expenses and, in annual reporting periods, an entity’s definition of selling expenses. ASU 2024-03 will be effective for us for annual periods beginning in 2027 and interim periods within fiscal years beginning in 2028. Early adoption is permitted. The amendments may be applied prospectively or retrospectively. ASU 2024-03 is not expected to have a significant impact on our financial statements.

ASU No. 2025-06,“Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40): Targeted Improvements to the Accounting for Internal-Use Software.” ASU 2025-06 simplifies and modernizes the accounting for internal-use software by removing the prescriptive project-stage guidance and revising the criteria for when capitalization of software development costs begins. Under the amended guidance, capitalization begins when management has authorized and committed to funding the software project and it is probable that the project will be completed and the software will be used to perform its intended function. ASU 2025-06 will be effective for us for annual and interim periods beginning in 2028, with early adoption permitted. ASU 2025-06 is not expected to have a significant impact on our financial statements.

ASU No. 2025‑09,“Derivatives and Hedging (Topic 815): Hedge Accounting Improvements.” ASU 2025-09 amends ASC 815 to better align hedge accounting with an entity’s risk management activities. The amendments, among other things, expand the ability to designate certain components of forecasted transactions as the hedged risk, permit forecasted transactions with similar risk exposures to be aggregated in certain circumstances, provide additional guidance for hedges of forecasted interest payments on variable-rate debt, and make other targeted improvements to hedge accounting guidance. ASU 2025-09 will be effective for us beginning in 2027, with early adoption permitted. ASU 2025-09 is not expected to have a significant impact on our financial statements.

ASU No. 2025‑11,“Interim Reporting (Topic 270): Narrow‑Scope Improvements.” ASU 2025-11 amends ASC 270 to clarify and improve the interim reporting guidance. Among other changes, the amendments clarify the scope of ASC 270, consolidate interim disclosure requirements currently located throughout the Accounting Standards Codification, and establish a disclosure principle for material events and changes occurring since the end of the most recently completed fiscal year that have an impact on the current interim period. ASU 2025-11 will be effective for us for interim periods beginning in 2028, with early adoption permitted. ASU 2025-11 is not expected to have a significant impact on our financial statements.

NOTE 2 -Acquisition of First Foundation Inc.

As described under the title “Business Combination” in Note 1 - Organization and Basis of Presentation, on April 1, 2026, the Company completed its acquisition of First Foundation, the holding company for First Foundation Bank, a California-chartered banking corporation.

Consideration

Under the terms of the Merger Agreement, at the Effective Time, each share of First Foundation common stock issued and outstanding immediately prior to the Effective Time (other than certain excluded shares specified in the Merger Agreement) became entitled to receive 0.16083 of a share of FirstSun common stock (the “exchange ratio”), with cash paid in lieu of any fractional shares. In addition, at the Effective Time, each then-outstanding share of First Foundation Series A Noncumulative Convertible Preferred Stock (the “Series A stock”) and Series C Non-Voting Common Equity Equivalent Stock (the “Series C stock” and together with the Series A stock, the “First Foundation Preferred Stock”) was converted into the right to receive 0.16083 of a share of FirstSun common stock for each share of First Foundation common stock into which the First Foundation Preferred Stock was convertible immediately prior to the Effective Time, subject to certain exceptions. In connection with the merger, we issued approximately 16.1 million voting shares and 2.6 million non-voting shares of FirstSun common stock to stockholders of First Foundation, with the stock consideration valued at approximately $682.8 million as of March 31, 2026, the last trading day before consummation of the acquisition. In addition, we made an aggregate cash payment of $17.5 million to First Foundation warrant holders and assumed First Foundation non-vested restricted stock awards with an estimated pre-combination vesting value of $3.3 million. Total aggregate consideration paid in the First Foundation merger was $703.6 million.

Fair Value

The acquisition of First Foundation constituted a business combination in accordance with ASC Topic 805, Business Combinations. Accordingly, the Company recorded the assets acquired and liabilities assumed at fair value as of the acquisition date. The determination of estimated fair value required management to make assumptions related to discount rates, expected future cash flows, market conditions and other future events that are subjective in nature and subject to change. Accordingly, these fair value estimates related to the assets and liabilities from First Foundation are considered preliminary as of September 30, 2026, and are subject to adjustment for up to one year after the closing date of the acquisition as additional information becomes available. Valuations subject to refinement include, but are not limited to, loans, certain deposits, certain other assets, and the core deposit intangible asset.

In connection with the acquisition of First Foundation, the Company recorded preliminary goodwill of $9.1 million, allocated entirely to the Company’s Banking segment, none of which is anticipated to be deductible for tax purposes. The preliminary goodwill is primarily attributable to expected synergies, operational efficiencies, and other factors to arise from the transaction.

Estimated fair values of the assets acquired and liabilities assumed in this transaction are as follows:

The Company assessed the fair value based on the following methods for the significant assets acquired and liabilities assumed:

Cash and cash equivalents: The fair value was determined to approximate the carrying amount based on the short-term nature of these assets.

Investment securities: The fair value of the investment portfolio was based on pricing obtained by independent pricing services and quoted market prices.

Loans held-for-sale (“LHFS”): Fair values for LHFS were based on quotes or bids from third parties.

Loans held-for-investment (“LHFI”): Fair values for LHFI were estimated using a discounted cash flow analysis that considered factors including loan type, interest rate type, prepayment speeds, duration, and current discount rates. The discount rate was developed considering the funding costs, a market participant’s required rate of return on equity capital, plus adjustments reflecting servicing costs and a liquidity premium. Expected cash flows were derived using inputs that considered estimated credit losses and prepayments.

The following tables reconcile the par value of the First Foundation loan portfolio as of the purchase date to the fair value indicated in the table above. For purchased seasoned loans and purchased credit-deteriorated loans, an initial allowance for credit losses is measured under the Company’s CECL methodology and added to the purchase price to establish the initial amortized cost basis (the “gross-up approach”). The remaining difference between the initial amortized cost basis and the unpaid principal balance represents the non-credit discount or premium.

Premises and equipment: The fair value of bank premises and equipment held for use was valued by obtaining recent market data for similar property types with adjustments for characteristics of individual properties.

Bank owned life insurance (“BOLI”): The fair value of BOLI is carried at its current cash surrender value, which is a reasonable estimate of fair value.

Core deposit intangible (“CDI”) and customer relationship intangible: CDI represents the future economic benefit of acquired customer deposits. The fair value of the CDI asset was estimated based on a discounted cash flow methodology that incorporated expected customer attrition rates, cost of deposit base, net maintenance cost associated with customer deposits, and the cost for alternative funding sources. The discount rates used were based on market rates. Customer relationship intangible assets represent the value associated with customer relationships related to the wealth management business that was acquired.

Deferred taxes: Deferred tax assets and liabilities were recognized for the estimated future tax consequences of temporary differences between the acquisition-date financial statement carrying amounts of the assets acquired and liabilities assumed and their respective tax bases, using enacted federal and state income tax rates expected to apply when those temporary differences reverse. The Company evaluated the realizability of the acquired deferred tax assets in accordance with ASC Topic 740 based on all available positive and negative evidence, including the expected future taxable income of the combined company, and recorded a valuation allowance to the extent it was more likely than not that any portion of the acquired deferred tax assets would not be realized.

Restricted stock: The carrying value approximates the fair value.

Lease Right of Use (“ROU”) assets and lease liabilities: The fair value of the lease ROU assets was measured at an amount equal to the lease liability and evaluated for favorable or unfavorable lease terms when compared with market terms on a lease-by-lease basis.

Deposits: The fair value of interest-bearing and noninterest-bearing deposits is the amount payable on demand at the acquisition date. The fair value of time deposits was estimated using a discounted cash flow calculation that includes a market rate analysis of the current rates offered by market participants for certificates of deposit that mature in the same period.

Borrowings: Acquired borrowings consist of $1.0 billion in Federal Home Loan Bank (“FHLB”) putable advances and $400 million in FHLB term advances. The fair value of FHLB advances was estimated based on the prepayment penalties incurred upon extinguishment of the borrowings on April 1, 2026.

Subordinated debt: The fair value of the subordinated debt was estimated using a discounted cash flow analysis, factoring in market terms and the structural terms of the borrowings.

Merger Related Expenses

Merger related expenses were $13.2 million and $0.2 million, for the three months ended September 30, 2026 and 2025, respectively, and were $73.5 million and $0.5 million for the nine months ended September 30, 2026 and 2025, respectively, and are recorded in “Merger related expenses” on the Company’s Consolidated Statements of Income and have been expensed as incurred. Such costs included employee severance, other employee related costs, contract termination expenses, professional fees, and facilities related costs. On a net-of-tax basis, merger related expenses were

$9.8 million and $0.2 million for the three months ended September 30, 2026 and 2025 and were $55.8 million and $0.5 million for the nine months ended September 30, 2026 and 2025, respectively.

Pro Forma Financial Information

The following table presents for illustrative purposes only certain pro forma financial information as if the Company had acquired First Foundation on January 1, 2025. These results combine the historical results of First Foundation with the Company's historical consolidated results and while certain adjustments were made for the estimated impact of certain fair value adjustments and other acquisition-related activity, they are not indicative of what would have occurred had the acquisition taken place on January 1, 2025. No adjustments have been made to the pro forma results regarding possible revenue enhancements, provision for credit losses, or expense efficiencies. Pro forma adjustments below include the net impact of First Foundation’s accretion and the elimination of merger-related costs, as disclosed below. The Company expects to achieve further operating cost savings and other business synergies, as a result of the acquisition, which are not reflected in the pro forma amounts below:

The Company’s operating results for the three and nine months ended September 30, 2026 include the operating results of the acquired assets and assumed liabilities of First Foundation subsequent to the acquisition on April 1, 2026. Disclosure of the revenue and earnings of First Foundation since the acquisition date, as would otherwise be required by ASC 805-10-50-2(h), is impracticable, due to the recent conversion of First Foundation’s general ledger, deposit, loan servicing, and other operating systems onto the Company’s platforms late in the third quarter of 2026. As a result, First Foundation’s post-acquisition results are not separately captured in the Company’s financial reporting systems and cannot be reliably disaggregated from the combined operating results without unreasonable effort and expense.

NOTE 3 -Securities

The amortized cost, gross unrealized gains and losses, and fair values of available-for-sale and held-to-maturity debt securities by type follows as of:

There wasno allowance for credit losses related to our investment securities as of September 30, 2026 and December 31, 2025.

As of September 30, 2026 and December 31, 2025, there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders’ equity.

Fair value and unrealized losses on debt securities by type and length of time in a continuous unrealized loss position without an allowance for credit losses were as follows:

We do not consider the unrealized losses to be credit-related, as these unrealized losses primarily relate to changes in interest rates and market spreads subsequent to purchase. We do not have plans to sell any of the available-for-sale debt securities with unrealized losses as of September 30, 2026, and we believe it is more likely than not that we would not be required to sell such available-for-sale debt securities before recovery of their amortized cost.

We continue to monitor unrealized loss positions for potential credit impairments. During the three and nine months ended September 30, 2026 and 2025, there were no credit impairments related to our investment securities.

The amortized cost and fair value of our debt securities by contractual maturity as of September 30, 2026 are summarized in the following table. Maturities are based on the final contractual payment dates and do not reflect the impact of prepayments or earlier redemptions that may occur.

Securities with a carrying value of $1,185,130 and $361,877 were pledged to secure public deposits, securities sold under agreements to repurchase, and borrowed funds at September 30, 2026 and December 31, 2025, respectively.

Available-for-sale debt securities with a carrying value of $37,734 and $39,114 were designated in fair value hedges at September 30, 2026 and December 31, 2025, respectively. See Note 7 - Derivative Financial Instruments for further information.

There wereno proceeds from sales and calls of securities for the three months ended September 30, 2026 and 2025. There were proceeds of $1,279,997 from the sale of securities during the nine months ended September 30, 2026. These securities were acquired in the First Foundation acquisition and were identified for disposition as part of the Company’s balance sheet repositioning strategy. Because the securities were recorded at fair value as of the acquisition date and were sold shortly thereafter, no gain or loss was recognized on sale. There were proceeds of $946 from sales and calls of securities for the nine months ended September 30, 2025.

NOTE 4 -Loans

Loans held-for-investment 1 by portfolio type consist of the following as of:

As of September 30, 2026 and December 31, 2025, we had net deferred fees, costs, premiums and discounts of $306,385 and $13,538, respectively, on our loan portfolio.

Accrued interest receivable on loans totaled $52,134 and $30,031 at September 30, 2026 and December 31, 2025, respectively, and is included in accrued interest receivable in the accompanying consolidated balance sheets.

There wereno loan sales during the three months ended September 30, 2026. There were proceeds of $1,117,883 from the sale of loans during the nine months ended September 30, 2026. These loans were acquired in the First Foundation acquisition and were identified for disposition as part of the Company’s balance sheet repositioning strategy. Because the loans were recorded at fair value as of the acquisition date and were sold shortly thereafter, no gain or loss was recognized on sale. There wereno loan sales during the three or nine months ended September 30, 2025.

1 Loans held-for-investment are net of deferred fees, costs, premiums and discounts.

The following table presents the activity in the allowance for credit losses by portfolio type for the three months ended September 30,:

The following table presents the activity in the allowance for credit losses by portfolio type for the nine months ended September 30,:

We determine the allowance for credit losses estimate on at least a quarterly basis.

As of September 30, 2026 and December 31, 2025, we had an allowance for credit losses on unfunded commitments of $1,134 and $1,209, respectively, included in accrued expenses and other liabilities within the consolidated balance sheets. For the three months ended September 30, 2026 and 2025, we didnot record any provision for credit losses on unfunded commitments. For the nine months ended September 30, 2026 and 2025 we recorded a benefit for credit losses on unfunded commitments of $350 and $650, respectively.

The following table presents our loan portfolio aging analysis as of:

Interest income recorded on nonperforming loans was not material for the three and nine months ended September 30, 2026 and 2025.

Credit risk monitoring and management is a continuous process to manage the quality of the loan portfolio. We segment loans into risk categories based on relevant borrower risk profile information, including the ability of borrowers to service their debt based on current financial information, historical payment experience, credit documentation, public information and current economic trends among other factors. The risk rating system is used as a tool to analyze and monitor movements in loan portfolio quality.

Risk ratings meeting an internally specified exposure threshold are updated annually, or more frequently upon the occurrence of a circumstance that affects the credit risk of the loan. We use the following definitions for risk ratings:

Pass – Loans classified as Pass have a well-defined primary source of repayment, an acceptable financial position profile (including capitalization), profitability and minimal operating risk.

Pass/Watch – Pass/Watch loans require close attention by bank management and enhanced monitoring due to quantitative or qualitative concerns linked to adverse trends or near-term uncertainty. A covenant default or other type of requirement shortfall may have arisen subsequent to a loan's booking or borrower now shows signs of weakness in the overall base of confirmable financial resources available to repay the loan. However, overall financial capacity and performance are considered sufficient to support an expectation of continued payment performance and / or mitigating factors exist that are expected to limit the risk of near-term default and loss.

Special Mention – Special Mention loans have identified potential weaknesses that are of sufficient materiality to require management’s (persistent) close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or in the bank's credit position under normal business operations. Special Mention loans contain greater-than-acceptable risk and therefore do not warrant additional credit exposure absent appropriate mitigating factors; they are thus considered “criticized,” non-pass rated credits. They may contain weaknesses (that have arisen due to deteriorating conditions since origination) and / or underwriting exceptions that are not currently offset by mitigating factors. However, these weaknesses, while sufficient to constitute significantly elevated credit risk, are not sufficient to support a conclusion that the liquidation of the debt is in significant jeopardy.

Substandard - Accruing – Substandard - Accruing loans are inadequately protected by the current sound net worth and paying capacity of the obligor(s). Loans classified as Substandard - Accruing possess one or more well-defined weaknesses that are expected to jeopardize their liquidation but the weaknesses have not progressed to a point where recent late payments on the loan have become more than 90 days past due. These loans are characterized by the distinct possibility that the bank may sustain up to a moderate but not significant level of loss if such weaknesses are not corrected. Losses for Substandard - Accruing loans are moderated by the lower likelihood of ultimate default and the existence of relatively favorable secondary repayment protection. These loans are considered “classified”.

Substandard - Nonaccrual – Substandard - Nonaccrual loans are inadequately protected by the current sound net worth and paying capacity of the obligor or the collateral pledged, if any. Loans classified as Substandard - Nonaccrual possess material, well-defined weaknesses that are expected to jeopardize their liquidation and have progressed to a point where consistently late payments on the loan have become 90 or more days past due. These loans are characterized by the distinct possibility that the bank may sustain a material level of loss if such weaknesses are not corrected. Losses for Substandard - Nonaccrual loans are prone to being elevated based on the strong likelihood of the loan remaining in payment default and an undesirable level of secondary repayment protection. These loans are considered “nonperforming”.

Doubtful – Loans classified as Doubtful possess all of the weaknesses inherent in loans classified as Substandard - Nonaccrual with the added characteristic that the weaknesses make collection or liquidation in full highly questionable or improbable based on currently existing facts, conditions and values. A high probability of substantial loss or possible total loss exists. Loans rated as doubtful are not rated as loss because certain events may occur that could salvage at least a portion of the debt. These events include injections of capital, additions of pledged collateral or possible mezzanine debt refinancing options. However, without the occurrence of such events, total loss may be possible. No definite repayment schedule exists for these loans. The Doubtful grade is a temporary grade. If a near-term recovery of a portion of the loan balance is indeterminable or unlikely to occur, the remaining balance of the loan should be written off and possible future recoveries may partially offset the full write-off of the loan. These loans are considered “nonperforming”.

Loss – Loans classified as Loss are defaulted loans with limited or immaterial recovery prospects. No loan that has not yet defaulted should be classified at this grade level. This rating level tends to be very short lived as the full balance of the loan tends to be fully written off nearly immediately after a change to this rating level. These loans are considered “nonperforming”.

The following table presents the amortized cost by segment of loans by risk category and origination date as of September 30, 2026 and gross charge-offs by origination date for the nine months ended September 30, 2026:

The following table presents the amortized cost by segment of loans by risk category and origination date as of December 31, 2025 and gross charge-offs by origination date for the year ended December 31, 2025:

The following table presents information about collateral dependent loans that were individually evaluated for purposes of determining the ACL as of:

The allowance related to collateral dependent loans reported in the tables above includes qualitative adjustments applied to the loan portfolio that consider possible changes in circumstances that could ultimately impact credit losses and might not be reflected in historical data or forecasted data incorporated in the quantitative models.

Loan Modifications Made to Borrowers Experiencing Financial Difficulty:

The allowance for credit losses incorporates an estimate of lifetime expected credit losses and is recorded on each asset upon origination. The starting point for the estimate of the allowance for credit losses is historical loss information, which includes losses from modifications of receivables to borrowers experiencing financial difficulty. We use a probability of default/loss given default model to determine the allowance for credit losses. An assessment of whether a borrower is experiencing financial difficulty is made at the time of a modification. The loan modifications in the table below did not significantly impact our determination of the allowance for credit losses on loans during the three and nine months ended September 30, 2026.

Because the effect of most modifications made to borrowers experiencing financial difficulty is already included in the allowance for credit losses, a change to the allowance for credit losses is generally not recorded upon modification. Occasionally, we modify loans by providing principal forgiveness that is deemed to be uncollectible; therefore, that portion of the loan is written-off, resulting in a reduction of the amortized cost basis and a corresponding adjustment to the allowance for credit losses. Additionally, we may allow a loan to go interest only for a specified period of time.

The following tables present loan modifications for borrowers experiencing financial difficulty, segregated by modification type, regardless of whether such modifications resulted in a new loan.

For the three months ended September 30,:

For the nine months ended September 30,:

Modifications made to borrowers experiencing financial difficulty during the periods presented included principal forgiveness, payment deferrals, term extensions, interest-rate reductions and combinations of these modifications.

There were commitments to lend additional funds to these borrowers of $3,330 at September 30, 2026.

We closely monitor the performance of loan modifications made to borrowers experiencing financial difficulty to understand the effectiveness of the modification efforts. The following table depicts the performance of loan modifications made to borrowers experiencing financial difficulty that have been modified in the preceding 12 months:

NOTE 5 -Mortgage Servicing Rights

We have investments in mortgage servicing rights (“MSRs”) that result from the sale of residential and multifamily loans to the secondary market for which we retain the servicing. We account for these MSRs at their fair value.

The unpaid principal loan balance of our servicing portfolio is presented in the following table as of:

The activity of MSRs carried at fair value is as follows:

The following represents the weighted-average key assumptions used to estimate the fair value of MSRs as of:

Servicing and ancillary fees for residential real estate loans are included within Mortgage banking services and multifamily real estate loans are included within other noninterest income within our consolidated statements of (loss) income and comprehensive (loss) income. Total servicing and ancillary fees earned from the mortgage servicing portfolio are presented in the following table:

NOTE 6 -Goodwill, Core Deposits and Other Intangible Assets

Activity in our goodwill, core deposits and other intangible assets was as follows as of and for the three months ended September 30,:

Activity in our goodwill, core deposits and other intangible assets was as follows as of and for the nine months ended September 30,:

During the three and nine months ended September 30, 2026 and 2025, there wasno indication of impairment of our goodwill, core deposits and other intangible assets.

Future amortization expense of our core deposits and other intangible assets is as follows:

NOTE 7 -Derivative Financial Instruments

Banking Derivative Financial Instruments:

We use fair value hedges to seek to manage our exposure to changes in the fair value of certain recognized assets attributable to changes in a benchmark interest rate, such as SOFR. Some of the fair value hedges on loans utilize the portfolio layer method. This approach allows us to designate as the hedged item a stated amount of assets that are not expected to be affected by prepayments, defaults, or other factors affecting the timing and amount of cash flows. The fair value portfolio level basis adjustment on our hedged Multifamily and Public Finance loans has not been attributed to the individual loans in our Unaudited Consolidated Balance Sheets. The fair value hedges were determined to be effective during all periods presented and we expect the hedges to remain effective during their remaining terms.

Derivatives not designated as hedges are not speculative and result from a service we provide to certain customers. We execute interest rate swaps with banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously offset by derivatives that we execute with a third party, such that we minimize our net risk exposure resulting from such transactions. As the interest rate derivatives associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer derivatives and the offsetting derivatives are recognized directly in earnings.

Derivative instruments are measured at fair value and recorded as a component of prepaid expenses and other assets and accrued expenses and other liabilities.

The components of our banking derivative financial instruments consisted of the following as of:

We recorded gains and losses on banking derivative assets and liabilities as follows:

For the three months ended September 30, 2026 and 2025, our banking derivative financial instruments not designated as hedging instruments generated fee income of $479 and $285, respectively. For the nine months ended September 30, 2026 and 2025, our banking derivative financial instruments not designated as hedging instruments generated fee income of $1,152 and $1,079, respectively.

The carrying amount of hedged loans receivable as of September 30, 2026 and December 31, 2025 was $140,357 and $143,896, respectively. The cumulative amount of fair value hedging adjustment included in the carrying amount of the hedged loans receivable as of September 30, 2026 and December 31, 2025 was $(6,019) and $(4,835), respectively. The cumulative amount of fair value hedging adjustment on portfolio layer method hedges as of September 30, 2026 was $(19,596). There wereno portfolio layer hedge adjustments as of December 31, 2025. The fair value hedging adjustment included in other noninterest income for the three months ended September 30, 2026 and 2025 was $(864) and $607, respectively. The fair value hedging adjustment included in other noninterest income for the nine months ended September 30, 2026 and 2025 was $(1,184) and $3,968, respectively.

The carrying amount of hedged available-for-sale debt securities as of September 30, 2026 and December 31, 2025 was $37,734 and $39,114, respectively. The cumulative amount of fair value hedging adjustment included in the amortized cost amount of the hedged available-for-sale debt securities as of September 30, 2026 and December 31, 2025 was $(4,062) and $(2,443), respectively. The fair value hedging adjustment included in interest income for the three months ended September 30, 2026 and 2025 was $(1,076) and $212, respectively. The fair value hedging adjustment included in interest income for the nine months ended September 30, 2026 and 2025 was $(1,619) and $(18), respectively.

Credit-risk-related Contingent Features:

We have agreements with each of our derivative counterparties that contain a provision where if we either default or are capable of being declared in default on any of our indebtedness, then we could also be declared in default on our derivative obligations.

We also have agreements with our derivative counterparties that contain a provision where if we fail to maintain our status as a well-capitalized institution, then our derivative counterparties have the right but not the obligation to terminate existing swaps. As of September 30, 2026 and December 31, 2025, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $21,044 and $15,092, respectively. As of September 30, 2026 and December 31, 2025, we have minimum collateral posting thresholds with our derivative counterparties and have posted collateral of $7,960 and $5,890, respectively. If we had breached any of these provisions at September 30, 2026, we could have been required to settle our obligations under the agreements at their termination value of $21,044.

Mortgage Banking Derivative Financial Instruments:

The components of our mortgage banking derivative financial instruments consisted of the following as of:

We recorded gains and losses on mortgage banking derivative assets and liabilities as follows:

NOTE 8 -Deposits

The composition of our deposits is as follows as of:

The following table summarizes the interest expense incurred on our deposits:

The remaining maturity on certificate of deposit accounts is as follows as of:

NOTE 9 -Debt

FHLB advances

As of September 30, 2026 and December 31, 2025, our total borrowing capacity with the FHLB, based on qualified collateral lending values, was $3,836,077 and $1,491,095, respectively. Our additional borrowing availability with the FHLB at September 30, 2026 was $3,708,539. These borrowings can be in the form of additional term advances or a line-of-credit. No amounts were drawn on the line-of-credit as of September 30, 2026.

Our FHLB advances are typically considered short-term borrowings with maturities less than one year and are used to manage liquidity as needed. Maturing advances are replaced by drawing on available cash, making additional borrowings or through increased customer deposits. The advances, if any, were collateralized by $6,680,377 and $2,761,116 of loans pledged to the FHLB as of September 30, 2026 and December 31, 2025, respectively.

FRB advances

We also had a $2,131,227 line-of-credit with the FRB. The agreement bears interest at the Fed Funds target rate plus 0.50% and is secured by $2,511,662 of investment securities and loans pledged to the FRB as collateral. No amounts were drawn on the line-of-credit as of September 30, 2026.

Other borrowings

We have lines-of-credit with certain other financial institutions totaling $250,000 as of September 30, 2026. No amounts were drawn on these lines-of-credit at September 30, 2026.

Subordinated Debt

Subordinated Notes - 2020

On April 1, 2026, in connection with our acquisition of First Foundation, we assumed subordinated notes totaling $24,165 that were originally issued in July 2020. The notes pay interest at a floating rate of three-month term SOFR plus 5.90% (9.60% as of September 30, 2026), reset quarterly. Interest is payable on March 31, June 30, September 30 and December 31 of each year. Such notes are due on June 30, 2030. We may redeem the notes at our discretion. These subordinated notes were recorded at a premium of $2,630. The amortization associated with the fair value premium for the three months ended September 30, 2026 was $144. The amortization associated with the fair value premium for the nine months ended September 30, 2026 was $288.

Subordinated Note - 2022

On January 13, 2022, we issued a subordinated note totaling $25,000. The note pays interest at a fixed rate of 3.375% through January 15, 2027 and, subsequently, until maturity, at a floating rate of three-month term SOFR plus 2.03%, reset quarterly. Interest is payable on July 15 and January 15 of each year. The note is due on January 15, 2032. The note is not redeemable within the first five years of issuance, except under certain limited conditions. After five years, we may redeem the note at our discretion. We incurred and capitalized $534 of costs related to the issuance of the subordinated note. The amortization associated with the capitalized issuance costs wasnot significant for the periods presented.

Subordinated Notes - 2022

On April 1, 2026, in connection with our acquisition of First Foundation, we assumed subordinated notes totaling $150,000 that were originally issued in January 2022. The notes pay interest at a fixed rate of 3.50% through February 1, 2027 and subsequently, until maturity at February 1, 2032, at a floating rate of three-month term SOFR plus 2.04%, reset quarterly. Interest is payable semiannually on February 1 and August 1 of each year during the fixed period and then becomes payable quarterly on February 1, May 1, August 1 and November 1 beginning February 1, 2027. Such notes are due on February 1, 2032. The notes are not redeemable within the first five years of issuance, except under certain limited conditions. After five years, we may redeem the notes at our discretion. These subordinated notes were recorded at a discount of $9,236. The accretion associated with the fair value discount for the three months ended September 30, 2026 was $1,037. The accretion associated with the fair value discount for the nine months ended September 30, 2026 was $2,050.

Trust preferred securities

We have issued $9,279 in trust preferred securities through a special-purpose trust, New Mexico Banquest Capital Trust I (“NMBCT I”). In addition, we have issued $4,640 in trust preferred securities through a special purpose trust, New Mexico Banquest Capital Trust II (“NMBCT II”, and together with NMBCT I, collectively referred to as “NMBCT Trusts”). Interest is payable quarterly at a rate of three-month term SOFR plus 3.35% (7.34% and 7.61% as of September 30, 2026 and 2025, respectively) for the trust preferred securities issued through NMBCT I and at a rate of three-month term SOFR plus 2.00% (6.00% and 6.46% as of September 30, 2026 and 2025, respectively) for the trust preferred securities issued through NMBCT II.

This subordinated debt of $13,919 was originally recorded at a discount of $4,293. The accretion associated with the fair value discount is not significant for the periods presented.

The Parent Company fully and unconditionally guarantees the obligations of the NMBCT Trusts on a subordinated basis. The trust preferred securities issued through the NMBCT Trusts are mandatorily redeemable upon the maturity of the debentures on December 19, 2032 and November 23, 2034, respectively, and are optionally redeemable, in part or in whole, by the Parent Company at each quarterly interest payment date. The Parent Company owns all of the outstanding common securities of the NMBCT Trusts, which have an aggregate liquidation value of $419 and is recorded in prepaid expenses and other assets on the consolidated balance sheet. The NMBCT Trusts are considered variable interest entities. Since the Parent Company is not the primary beneficiary of the NMBCT Trusts, the financial statements of the NMBCT Trusts are not included in our consolidated financial statements.

NOTE 10 -Earnings Per Share

Basic earnings per share, excluding dilution, is computed by dividing earnings available to common stockholders by the weighted average number of shares of common stock outstanding during the period. Diluted earnings per share reflects the potential dilution that could occur if securities or other contracts to issue common stock were exercised and converted into common stock or resulted in the issuance of common stock that could then share in our earnings.

The following table sets forth the computation of basic and diluted earnings per share of common stock:

Stock-based awards for 93,707 and 20,249 shares of common stock were not considered in computing diluted earnings per share for the three months ended September 30, 2026 and September 30, 2025, respectively, because they were antidilutive. Stock-based awards for 81,939 and 15,676 shares of common stock were not considered in computing diluted earnings per share for the nine months ended September 30, 2026 and September 30, 2025, respectively, because they were antidilutive.

NOTE 11 -Stockholders’ Equity

Preferred stock

As of September 30, 2026 and December 31, 2025, the Company had 10,000,000 shares of preferred stock authorized, $0.0001 par value, of which none were issued or outstanding.

Common stock

Voting

As of September 30, 2026 and December 31, 2025, the Company had 80,000,000 and 50,000,000 shares of voting common stock authorized, respectively, $0.0001 par value, of which 42,784,069 and 27,887,337 shares were issued and outstanding, respectively.

Non-Voting

As of September 30, 2026 the Company had 20,000,000 shares of non-voting common stock authorized, $0.0001 par value, of which 2,768,607 were issued and outstanding. As of December 31, 2025 the Company wasnot authorized to issue shares of non-voting common stock.

Dividends:

Dividends paid by the Company, if any, are substantially provided from Bank dividends. The Bank may declare dividends without prior regulatory approval that do not exceed the total of retained net income for the current year combined with its retained net income for the precedingtwo years, subject to maintenance of minimum capital requirements. Dividends received from subsidiaries were as follows:

The Parent Company did not declare or pay any dividend to stockholders for the three and nine months ended September 30, 2026 and 2025.

Equity Incentive Plans:

2017 Equity Incentive Plan

The 2017 Equity Incentive Plan (the “2017 Plan”) provides for the grant of stock options, stock appreciation rights, restricted stock and other stock awards to its employees, directors and consultants for up to 1,977,292 shares of FirstSun common stock in the aggregate.

Option awards are generally granted with an exercise price of not less than the fair value of a share of the Company’s common stock at the date of grant. They vest 25% on the first, second, third and fourth anniversaries following the date of grant and have 10-year terms. The fair value of each stock option award is estimated on the date of grant utilizing the Black-Scholes option pricing model. Expected volatility was determined based on the median historical volatility of 25 to 30 comparable companies that were publicly traded for a period commensurate with the expected term of the options. The expected term of the options was estimated to be the average of the vesting term and time to expiration. The risk-free rate for the expected term of the stock options was based on the U.S. Treasury yield curve in effect at the date of grant.

The following table presents stock options outstanding as of and for the nine months ended September 30, 2026:

At September 30, 2026, there wasno unrecognized compensation cost related to non-vested stock options. At September 30, 2026 and 2025, the intrinsic value of the stock options was $11,962 and $13,045, respectively.

2021 Equity Incentive Plan

The FirstSun Capital Bancorp 2021 Equity Incentive Plan (the “2021 Plan”) provides for the grant of stock options, stock appreciation rights, restricted stock and other stock awards to its employees, directors and consultants for up to 2,476,571 shares of FirstSun common stock in the aggregate. Additionally, we established the FirstSun Capital Bancorp Long-Term Incentive Plan (“LTIP”), which became effective April 1, 2022. The LTIP is intended to qualify as a “top-hat” plan under ERISA that is unfunded and provides benefits only to a select group of management or highly compensated employees of FirstSun or the Bank.

Restricted stock and restricted stock units:

The following table presents non-vested restricted stock and restricted stock units outstanding with only a service condition as of and for the nine months ended September 30, 2026:

At September 30, 2026, there was $10,162 of total unrecognized compensation cost related to the non-vested restricted stock and restricted stock units.

Performance share units:

We determine the shares to be issued based on actual and forecast results during the requisite performance period to determine the probability the market or performance conditions will be achieved. Performance share units outstanding at September 30, 2026 are as follows:

The following table presents performance share unit activity at target for the nine months ended September 30, 2026:

Acquired Equity Incentive Plans

Pioneer Bank, SSB:

In conjunction with the Pioneer merger, we assumed certain options that had been granted under Pioneer’s option plans. All assumed options were fully vested and exercisable. No further options will be granted under the Pioneer plans. The following table presents option activity for the nine months ended September 30,:

At September 30, 2026 and 2025, the intrinsic value of the stock options was $98 and $897, respectively.

For the nine months ended September 30, 2026 and 2025, we recorded total compensation cost from the Equity Incentive Plans of $5,616 and $2,935, respectively.

NOTE 12 -Income Taxes

The provision for income taxes in interim periods requires us to make an estimate of the effective tax rate expected to be applicable for the full year, adjusted for any discrete items for the applicable period. This estimated effective tax rate is then applied to interim consolidated pre-tax operating income to determine the interim provision for income taxes.

The provision for income tax is summarized as follows:

We do not believe that we have any material uncertain tax positions, and do not expect any material changes during the next twelve months.

NOTE 13 -Regulatory Capital Matters

Banks and bank holding companies are subject to regulatory capital requirements administered by federal banking agencies. Capital adequacy guidelines and, additionally for banks, prompt corrective action regulations involve quantitative measures of assets, liabilities, and certain off-balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators. Failure to meet capital requirements can initiate regulatory action.

Under the Basel III rules, the Parent Company and the Bank must hold a capital conservation buffer above the adequately capitalized risk-based capital ratios. The fully phased in capital conservation buffer is 2.50% for all periods presented.

The net unrealized gain or loss on available for sale securities is not included in computing regulatory capital. As of September 30, 2026, both the Parent Company and the Bank met all capital adequacy requirements to which they were subject.

Prompt corrective action regulations provide five classifications: well-capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized, although these terms are not used to represent overall financial condition. If adequately capitalized, regulatory approval is required to accept brokered deposits. If undercapitalized, capital distributions are limited, as is asset growth and expansion, and capital restoration plans are required. As of September 30, 2026 and December 31, 2025, the most recent regulatory notifications categorized the Bank as well-capitalized under the regulatory framework for prompt corrective action. There are no conditions or events since that notification that management believes have changed the Bank’s category.

Actual and required capital amounts for the Parent Company are as follows as of:

Actual and required capital amounts for the Bank are as follows as of:

NOTE 14 -Fair Value Measurements

We utilize fair value measurements to record or disclose the fair value of certain assets and liabilities. Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The determination of fair values of financial instruments often requires the use of estimates. In cases where quoted market values in an active market are not available, we use present value techniques and other valuation methods to estimate the fair values of our financial instruments. These valuation models rely on market-based parameters when available, such as interest rate yield curves or credit spreads. Unobservable inputs may be based on management’s judgment, assumptions, and estimates related to credit quality, our future earnings, interest rates and other relevant inputs. These valuation methods require considerable judgment and the resulting estimates of fair value can be significantly affected by the assumptions made and the methods used.

ASC Topic 820 establishes a three-level valuation hierarchy for disclosure of fair value measurements. The hierarchy is based on the transparency of the inputs used in the valuation process with the highest priority given to quoted prices available in active markets and the lowest priority to unobservable inputs where no active market exists. The three levels of inputs that may be used to measure fair value are as follows:

Level 1: Unadjusted quoted prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date.

Level 2: Inputs other than quoted prices included in Level 1 that are observable for the asset or liability, either directly or indirectly. These might include quoted prices for similar assets or liabilities in active markets, quoted prices for identical or similar assets or liabilities in markets that are not active, inputs other than quoted prices that are observable for the asset or liability (such as interest rates, volatilities, prepayment speeds, credit risks, etc.) or inputs that are derived principally from or corroborated by market data by correlation or other means.

Level 3: Unobservable inputs for determining the fair values of assets or liabilities that reflect an entity’s own beliefs about the assumptions that market participants would use in pricing the assets or liabilities.

A financial instrument’s categorization within the valuation hierarchy is based upon the lowest level of input within the valuation hierarchy that is significant to the overall fair value measurement. Transfers between levels of the fair value hierarchy are recognized at the end of the reporting period.

The following table sets forth our assets and liabilities measured at fair value on a recurring basis as of:

For further details on our Level 3 inputs related to MSRs, see Note 5 - Mortgage Servicing Rights.

The following table presents a reconciliation for our Level 3 assets measured at fair value on a recurring basis:

Certain financial assets and financial liabilities are regularly measured at fair value on a nonrecurring basis; that is, the instruments are not measured at fair value on an ongoing basis but are subject to fair value adjustments in certain circumstances. Financial assets measured at fair value on a non-recurring basis during the reported periods include certain collateral dependent loans reported at the fair value of the underlying collateral if repayment is expected solely from the collateral and other real estate owned and foreclosed assets, which, upon initial recognition, were remeasured and reported at fair value through a charge-off to the allowance for credit losses, and subsequent to their initial recognition, were remeasured at fair value through a write-down included in other noninterest expense. The following table sets forth our assets and liabilities that were measured at fair value on a non-recurring basis as of:

The fair value of the financial assets in the table above utilizes the market approach valuation technique, with discount adjustments for differences between comparable sales.

Fair value of financial instruments not carried at fair value:

The carrying amounts and estimated fair values of financial instruments not carried at fair value are as follows as of:

NOTE 15 -Segment Information

Operating segments are components of a business where separate financial information is available and evaluated regularly by the chief operating decision maker (“CODM”) in deciding how to allocate resources and in assessing performance. The Company’s Chief Executive Officer has been identified as the CODM, who oversees the operations conducted through our primary operating segments. Effective April 1, 2026, we revised our segment reporting structure to better reflect how the CODM evaluates the performance and allocates resources across the business following our acquisition of First Foundation. Historically, the Company hadtwo primary operating segments: Banking and Mortgage Operations. Corporate represents costs not allocated to the operating segments, including those of FirstSun and our non-bank subsidiaries.

Beginning April 1, 2026, we added a third primary operating segment, Private Wealth Banking. This new segment reflects FirstSun Advisors (formerly First Foundation Advisors), an SEC-registered investment adviser acquired as part of the First Foundation acquisition. As a result, we now have three primary operating segments: Banking, Private Wealth Banking and Mortgage Operations, and we will continue to report Corporate, which represents costs not allocated to the operating segments, including those of FirstSun and our non-bank subsidiaries. The results discussed below reflect the updated segment structure for all current-period activity. Prior-period segment information has been recast, where applicable, to conform to the current presentation. The change in reportable segments did not impact our consolidated financial statements for prior periods other than reclassifications to conform prior period segment information to the current presentation.

The Banking segment originates loans and provides deposits and fee-based services to consumer, business, and mortgage lending customers. Products offered include a full range of commercial and consumer banking and financial services. The interest income on loans held-for-investment is recognized in the Banking segment, excluding newly originated residential first mortgages within the Mortgage Operations segment.

The Private Wealth Banking segment primarily consists of FirstSun Advisors, a fee-based investment adviser which provides investment advisory and wealth management services primarily to high-net-worth individuals, their families and their family businesses, and other affiliated organizations. In addition, the Bank provides trust services, which consist primarily of the management of trust assets, including financial planning services. We earn trust and investment advisory fees from contracts with our customers to manage and invest their assets and/or transact on their accounts. These fees are generally assessed based on a tiered scale of the market value of assets under management. Related services are based on a fixed fee schedule.

The Mortgage Operations segment originates, sells, services, and manages market risk from changes in interest rates on one- to four-family residential mortgage loans to sell or hold on our balance sheet. Loans originated for sale comprise the majority of the lending activity. The Mortgage Operations segment recognizes interest income on loans that are held-for-sale and newly originated residential mortgages held-for-investment, the gains from one- to four-family residential mortgage sales, and revenue for servicing loans and other ancillary fees following a sales transaction. Revenue from servicing activities is earned on a contractual fee basis. The Mortgage Operations segment services loans for the held-for-investment portfolio, for which it earns revenue via an intercompany service fee allocation which appears as a cost to Banking in mortgage fees. Forward traded loan purchases and sales settlements as well as mortgage servicing rights and related fair value adjustments are reported in this segment.

Corporate represents miscellaneous other expenses of a corporate nature as well as revenue and expenses not directly assigned or allocated to the Banking, Private Wealth Banking, or Mortgage Operations segments. The majority of executive management’s time is spent managing operating segments; related costs have been allocated between the operating segments and Corporate.

Allocations of expenses to the operating segments are based on estimated uses of those services. We use a funds transfer pricing process to allocate costs, capital and resources to each operating segment. This allows us to identify the cost of funds within each segment, measure the profitability of each segment by relating costs to revenue, and to evaluate each operating segment’s impact on consolidated earnings. Our CODM reviews net income to budgeted net income to assess segment performance on a monthly basis and to make decisions about allocating capital and personnel to the segments.

Significant segment totals are reconciled to the financial statements as follows for the three months ended September 30,:

Significant segment totals are reconciled to the financial statements as follows for the nine months ended September 30,:

NOTE 16 -Commitments and Contingencies

Commitments

We are a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of our customers. These financial instruments include loan commitments, standby letters of credit, and documentary letters of credit and involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the financial statements. Our exposure to credit loss in the event of nonperformance by the other party of these loan commitments and standby letters of credit is represented by the contractual amount of those instruments. We use the same credit policies in making commitments and conditional obligations as we do for on-balance sheet financial instruments.

Undistributed portion of committed loans and unused lines of credit

Loan commitments are agreements to lend to a customer as long as there is no customer violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require a payment of a fee. As of September 30, 2026 and December 31, 2025, commitments included the funding of fixed-rate loans totaling $232,627 and $130,867 and variable-rate loans totaling $2,045,515 and $1,372,506, respectively. The fixed-rate loan commitments have interest rates ranging from 1.00% to 21.00% at September 30, 2026 and December 31, 2025, and maturities ranging from 1 month to 21 years at September 30, 2026 and 1 month to 17 years at December 31, 2025.

Standby letters of credit

Standby letters of credit are conditional commitments to guarantee the performance of a customer to a third party. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers. Since many loan commitments and letters of credit expire without being drawn upon, the total commitment amount does not necessarily represent future cash requirements. We evaluate each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary upon extension of credit, is based on our credit evaluation of the counterparty. Collateral held varies but may include accounts receivable, inventory, property, plant and equipment, owner occupied real estate, and/or income-producing commercial properties. As of September 30, 2026 and December 31, 2025, our standby letters of credit commitment totaled $51,738 and $39,356, respectively.

MPF Master Commitments

The Bank has executed MPF Master Commitments (“Commitments”) with the FHLB to deliver mortgage loans and to guarantee the payment of any realized losses that exceed the FHLB’s first loss account for mortgages delivered under the Commitments. The Bank receives credit enhancement fees from the FHLB for providing this guarantee and continuing to manage the credit risk of the MPF Program mortgage loans. As of September 30, 2026 and December 31, 2025, the Bank considered the amount of any of its liability for the present value of the credit enhancement fees less any expected losses in the mortgages delivered under the Commitments to be immaterial, and has not recorded a liability and offsetting receivable. As of September 30, 2026 and December 31, 2025, the maximum potential amount of future payments that the Bank would have been required to make under the Commitments was $8,194 and $4,600, respectively. Under the Commitments, the Bank agrees to service the loans and, therefore, is responsible for any necessary foreclosure proceedings. Any future recoveries on any losses would not be paid by the FHLB under the Commitments. The Bank has not experienced any material losses under these guarantees.

Contingencies

We generally sell loans to investors without recourse; therefore, the investors have assumed the risk of loss or default by the borrower. However, we are usually required by these investors to make certain standard representations and warranties relating to credit information, loan documentation, and collateral. To the extent that we do not comply with such representations, we may be required to repurchase the loans or indemnify these investors for any losses from borrower defaults. We establish reserves for potential losses related to these representations and warranties if deemed appropriate and such reserves would be recorded within accrued expenses and other liabilities. In assessing the adequacy of the reserve, we evaluate various factors including actual write-offs during the period, historical loss experience, known delinquent and other problem loans, and economic trends and conditions in the industry.

Litigation

From time to time, we are a defendant in various claims, legal actions, and complaints arising in the ordinary course of business. We periodically review all outstanding pending or threatened legal proceedings and determine if such matters will have an adverse effect on our business, financial condition, results of operations or cash flows.

We establish reserves for contingencies, including legal proceedings, when potential losses become probable and can be reasonably estimated.

NOTE 17 -Lease Commitments

Our leases relate primarily to office space and bank branches with remaining lease terms of generally 1 to 15 years. Certain lease arrangements contain extension options which typically range from 5 to 10 years at the then fair market rental rates. As these extension options are not generally considered reasonably certain of exercise, they are not included in the lease term.

The following table reconciles future undiscounted lease payments due under non-cancelable operating leases to the aggregate operating lessee lease liability as of September 30, 2026:

Total lease expense for the three months ended September 30, 2026 and 2025 was $3,400 and $1,885, respectively. Total lease expense for the nine months ended September 30, 2026 and 2025 was $9,262 and $5,989, respectively. The components of total lease expense were as follows:

We do not currently have any significant finance leases in which we are the lessee, material related-party leases, leases containing residual value guarantees or restrictive covenants.