Company: NMFCZ
Filing Date: 2025-04-03
Form Type: DEF 14A
Source: 0001140361-25-012061
Chunk: 1

Company: New Mountain Finance Corp
Filing Date: 2025-04-03
Form: DEF 14A
Chunk 1
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2025; and (iii) transact such other business that may properly come before the Annual Meeting. It is important that your shares be represented at the Annual Meeting. If you are unable to participate in the Annual Meeting during the scheduled time, I urge you to follow the instructions on the Notice of Internet Availability of Proxy Materials to vote your proxy on the Internet. I encourage you to vote via the Internet, as it saves us significant time and processing costs. However, on the Notice of Internet Availability of Proxy Materials, you will also find instructions on how to request a hard copy of the Proxy Statement and proxy card free of charge and you may vote your proxy by returning your proxy card to us after you request the hard copy materials. Your vote is important. To vote or to submit your questions during the Annual Meeting, please log on to www.virtualshareholdermeeting.com/NMFC2025. You will need to enter the 16-digit control number on your notice of the Annual Meeting. Your vote is important to us.

| Sincerely yours,                      |
| John R. Kline                         |
| President and Chief Executive Officer |

TABLE OF CONTENTS

New Mountain Finance Corporation 1633 Broadway, 48th Floor New York, New York 10019 NOTICE OF ANNUAL MEETING OF STOCKHOLDERS AND INTERNET AVAILABILITY OF PROXY MATERIALS TO BE HELD ON MAY 16, 2025 To the Stockholders of New Mountain Finance Corporation: A meeting (the “Annual Meeting”) of stockholders of New Mountain Finance Corporation (“NMFC” or the “Company”) will be held on May 16, 2025 at 11:30 a.m., Eastern Time. We are very pleased that this year’s Annual Meeting will be a completely virtual meeting of stockholders, which will be conducted via live webcast. It is important to note that stockholders have the same rights and opportunities by participating in a virtual meeting, as they would if attending an in-person meeting. You can participate in the Annual Meeting, vote and submit your questions during the Annual Meeting by visiting www.virtualshareholdermeeting.com/NMFC2025. You must have your 16-digit control number in order to access the Annual Meeting. The Annual Meeting will be held for the following purposes:

| 1. | To elect three directors to the board of directors of NMFC who will each serve for a term of three years, or until their respective successors are duly elected and qualify; |

| 3. | To trans