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Date of report (Date of earliest event reported): January 29, 2024

(Exact Name of Registrant as Specified in Charter)

Registrant’s telephone number, including area code (772) 287-4000

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2.)

☐    Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐    Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐    Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

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Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

Item 5.02    Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On January 29, 2024, Julie H. Daum formally announced her decision to retire from the Board of Directors (the “Board”) of Seacoast Banking Corporation of Florida (“Seacoast” or the “Company”), effective January 30, 2024. Ms. Daum was appointed to the Board in 2013, and was a member of the Board’s compensation and governance committee and the trust committee of the Board of the Company’s principal operating subsidiary, Seacoast National Bank (the “Bank”), at the time of her resignation. Ms. Daum’s decision to resign was for personal reasons and was not a result of any disagreement with the Company. The Company is grateful to Ms. Daum for her valued service on the Board.

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.