Prospectus by Investment Company - Form 497AD

Issuer (Ticker)	New Mountain Finance Corporation (NMFC)
Expected Ratings*	Moody's: Baa3 (Stable) Fitch: BBB- (Stable) KBRA: BBB- (Stable)
Format	SEC Registered
Ranking	Senior Unsecured
Tenor	3-Year
Maturity Date	October 15, 2027
Size	$300 Million
IPTs	T+312.5 Area
Settlement	T+3 (September 26, 2024)
Coupon Type	Fixed
Change of Control:	Yes, 100% (See Red)
Active Bookrunners	SMBC (B&D), DB, GS, WFS
Use of Proceeds	To repay existing indebtedness under the Holdings Credit Facility, the NMFC Credit Facility, and the DB Credit Facility.
Optional Redemption	Make-Whole Call
Denominations	2,000 x 1,000
CUSIP / ISIN	647551 AG5 / US647551AG52
Timing	Today's Business
Sales into Canada	Yes - via Exemption

* Note: A securities rating is not a recommendation to buy, sell or hold securities and may be subject to revision or withdrawal at any time.

The information in the preliminary prospectus supplement dated September 23, 2024 and the accompanying prospectus dated June 26, 2024, and in this announcement, is not complete and may be changed. The preliminary prospectus supplement, the accompanying prospectus and this announcement are not offers to sell any securities of New Mountain Finance Corporation and are not soliciting an offer to buy such securities in any jurisdiction where such offer and sale is not permitted.

The issuer has filed a registration statement including a prospectus and a prospectus supplement with the Securities and Exchange Commission (SEC) for the offering to which this communication relates. Before you invest, you should read the prospectus and prospectus supplement in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may obtain these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus and the prospectus supplement if you request them by calling SMBC Nikko Securities America, Inc. at 1-212-224-5135, Deutsche Bank Securities Inc. at 1-800-503-4611, Goldman Sachs & Co. LLC at 1-866-471-2526, or Wells Fargo Securities LLC at 1-800-645-3751.

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