UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934 (Amendment No. ____)

Filed by the Registrantþ

Filed by a Party other than the Registranto

Check the appropriate box:

o	Preliminary Proxy Statement
o	Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))
o	Definitive Proxy Statement
þ	Definitive Additional Materials
o	Soliciting Material under §240.14a-12
CHEMUNG FINANCIAL CORPORATION
(Name of Registrant as Specified In Its Charter)
Payment of Filing Fee (Check all boxes that apply):
þ	No fee required.
o	Fee paid previously with preliminary materials.
o	Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a6(i)(1) and 0-11.

1. Election of Directors: Raimundo C. Archibold Jr. David J. Dalrymple Denise V. Gonick Joseph F. Meade IV Thomas R. Tyrrell 2. To approve, on a non-binding advisory basis, the compensation of the Named Executive Officers of the Corporation (“Say-On-Pay”). 3. To vote, on a non-binding advisory basis, on the frequency of the Say-On-Pay vote (“Say-When-On-Pay”). 4. To ratify the appointment of Crowe LLP as the Corporation’s independent registered public accounting firm for the fiscal year ending December 31, 2024. If no direction is given, this proxy will be voted "FOR" the election of the nominees in Proposal 1 and "FOR" Proposals 2 and 4, and “EVERY YEAR” for Proposal 3. NOMINEES: This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. We encourage you to access and review all of the important information contained in the proxy materials before voting. If you want to receive a paper or e-mail copy of the proxy materials you must request one. There is no charge to you for requesting a copy. To facilitate timely delivery please make the request as instructed below before 5/21/2024. Please visit http://www.astproxyportal.com/ast/01079, where the following materials are available for view: • Notice of Annual Meeting of Stockholders • Proxy Statement • Form of Electronic Proxy Card • Annual Report of form 10-K, an abbreviated report for the twelve-month period. TO REQUEST MATERIAL: TELEPHONE: 888-Proxy-NA (888-776-9962) 201-299-6210 (for international callers) E-MAIL: Help@equiniti.com WEBSITE: https://us.astfinancial.com/OnlineProxyVoting/ProxyVoting/RequestMaterials TO VOTE: ONLINE: To access your online proxy card, please visit www.voteproxy.com and follow the on-screen instructions or scan the QR code with your smartphone. You may enter your voting instructions at www.voteproxy.com up until 11:59 PM Eastern Time the day before the cut-off or meeting date. IN PERSON: You may vote your shares in person by attending the Annual Meeting. TELEPHONE: To vote by telephone, please visit www.voteproxy.com to view the materials and to obtain the toll free number to call. MAIL: You may request a card by following the instructions above. COMPANY NUMBER ACCOUNT NUMBER CONTROL NUMBER JOHN SMITH 1234 MAIN STREET APT. 203 NEW YORK, NY 10038 Please note that you cannot use this notice to vote by mail. Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting of CHEMUNG FINANCIAL CORPORATION To Be Held On: June 4, 2024 at One Chemung Canal Plaza, Elmira, New York 14901 at 2:00 P.M.