CAMDEN NATIONAL CORP

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

Check the appropriate box:

CAMDEN NATIONAL CORP ORATION

(Name of Registrant as Specified in Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

Dear Shareholders:

You are cordially invited to attend the 2026 Annual Meeting of Shareholders of Camden National Corporation, which will be held on Tuesday, May 19, 2026, at 9:00 a.m., Eastern Daylight Time (together with any adjournments or postponements thereof, the “Annual Meeting”). We will be holding the Annual Meeting virtually via a live audio webcast atwww.virtualshareholdermeeting.com/CAC2026. We encourage you to virtually attend the Annual Meeting.

The accompanying Notice of Annual Meeting of Shareholders describes matters to be acted upon at the Annual Meeting. Please give these materials your prompt attention. Whether or not you are able to attend the Annual Meeting, please follow the instructions to vote online, by telephone, or by mail. Submitting your vote by proxy will not limit your right to attend the Annual Meeting virtually. If you attend the Annual Meeting virtually, you may vote if you wish to do so, which will supersede your proxy. Your vote is extremely important, so please act at your earliest convenience.

We appreciate your continued interest in Camden National Corporation.

Sincerely,

Marie J. McCarthy

Chair of the Board

Simon R. Griffiths

President and Chief Executive Officer

April 3, 2026

Notice of Annual Meeting of Shareholders to be held May 19, 2026

MEETING DETAILS

TO THE SHAREHOLDERS OF CAMDEN NATIONAL CORPORATION:

NOTICE IS HEREBY GIVEN that the 2026 Annual Meeting of Shareholders of Camden National Corporation, a Maine corporation (the “Company”), will be held on Tuesday, May 19, 2026, at 9:00 a.m., Eastern Daylight Time virtually via live audio webcast atwww.virtualshareholdermeeting.com/CAC2026 (together with any adjournments or postponements thereof, the “Annual Meeting”) for the purpose of considering and voting upon the following matters:

The Company's Board of Directors has fixed the close of business on March 25, 2026 as the record date (the “Record Date”) for determining the shareholders of the Company entitled to receive notice of, and to vote at, the Annual Meeting. Only shareholders of record of the Company’s common stock at the close of business on the Record Date are entitled to receive notice of, and to vote at, the Annual Meeting.

ATTENDING AND VOTING AT THE ANNUAL MEETING

Attending by virtual means: You will be able to attend the Annual Meeting virtually by visitingwww.virtualshareholdermeeting.com/CAC2026. To vote your shares or submit questions at the Annual Meeting, you must enter the control number found on your proxy card, voting instruction form or notice you previously received. If you do not have access to your control number, please contact Broadridge, no earlier than 30 minutes prior to the start of the Annual Meeting, at (844) 976-0738 (domestic) or (303) 562-9301 (international). If you hold your shares in a brokerage account and do not have access to your control number, neither the Company nor Broadridge will be able to provide your control number and you will need to contact your broker. If you do not enter your control number at the log-in page, you will be able to join the live audio webcast of the meeting as a guest, but you will not be able vote your shares or submit questions at the Annual Meeting.

If you encounter any difficulties accessing the virtual Annual Meeting during the check-in or meeting time, please call the technical support number that will be posted on the virtual meeting log-in page. Technical support will be available beginning 15 minutes prior to the start of the Annual Meeting.

Voting by virtual means: You will be able to vote your eligible shares while attending the virtual annual meeting by following the instructions on the Annual Meeting website atwww.virtualshareholdermeeting.com/CAC2026.

During the Annual Meeting, we will answer questions that are submitted online by shareholders as time permits. However, we reserve the right to exclude questions that are not pertinent to meeting matters or that are otherwise inappropriate. If we receive substantially similar questions, we may group such questions together and provide a single response to avoid repetition.

By Order of the Board of Directors,

Brandon Y. BoeyGeneral Counsel & Corporate Secretary

April 3, 2026

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