New Mountain Finance Corp

(a)Item 1.01 Entry into a Material Definitive Agreement

On July 29, 2024, we entered into Amendment No. 11 to the Loan and Security Agreement (the "Eleventh Amendment"), which amended the Third Amended and Restated Loan and Security Agreement, dated as of October 24, 2017 (together with the exhibits and schedules thereto, the "Holdings Credit Facility"), by and among by and among the Company, as the collateral manager, New Mountain Finance Holdings, L.L.C., as the borrower, Wells Fargo Bank, National Association ("Wells Fargo") as the administrative agent, the lenders party thereto and Wells Fargo, as the collateral custodian. The Eleventh Amendment amended the Holdings Credit Facility to, among other things, modify (i) the applicable spread used to determine the per annum interest rate payable under the Holdings Credit Facility and (ii) the calculation of the Non-Usage Fee Rate (as defined in the Eleventh Amendment) that may be payable by the Company at various points during the term of the Holdings Credit Facility.

The description above is qualified in its entirety by reference to the copy of the Eleventh Amendment, which is filed as Exhibit 10.4 to this Quarterly Report on Form 10-Q.

Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant.

The disclosure set forth above under Item 1.01 is incorporated by reference herein.

(b)None.

(c)For the period covered by this Quarterly Report on Form 10-Q, no director or officer has entered into or terminated any (i) contract, instruction or written plan for the purchase or sale of securities intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act or (ii) any non-Rule 10b5-1 trading arrangement.

We have adopted insider trading policies and procedures governing the purchase, sale, and disposition of the our securities by our officers and directors that are reasonably designed to promote compliance with insider trading laws, rules and regulations.