Juliette Kleffel - 31 Dec 2025 Form 4 Insider Report for SEACOAST BANKING CORP OF FLORIDA (SBCF)

Role: EVP, Chief Operating Officer
Signature: /s/ Kathy L. Hsu as Power of Attorney for Juliette Kleffel
Issuer symbol: SBCF
Transactions as of: 31 Dec 2025
Net transactions value: -$28,875
Form type: 4
Filing time: 05 Jan 2026, 16:34:14 UTC
Previous filing: 03 Apr 2025
Next filing: 11 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Kleffel Juliette	EVP, Chief Operating Officer	PO BOX 9012, STUART	/s/ Kathy L. Hsu as Power of Attorney for Juliette Kleffel	05 Jan 2026	0001726466

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	SBCF	Common Stock	Tax liability	$28,875	-919	-1.5%	$31.42	61,537	31 Dec 2025	Direct	F1
holding	SBCF	Common Stock						1,799	31 Dec 2025	Direct	F2
holding	SBCF	Common Stock						12,582	31 Dec 2025	Direct	F3
holding	SBCF	Common Stock						5,147	31 Dec 2025	Direct	F4

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
holding	SBCF	Common Stock Right to Buy						12,635	31 Dec 2025	Common Stock	12,635	$31.15	Direct	F5, F6
holding	SBCF	Common Stock Right to Buy						14,831	31 Dec 2025	Common Stock	14,831	$28.69	Direct	F5, F6

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares to cover tax withholding obligations for vested performance-based restricted stock units ("PSUs"), which vested December 31, 2025, total adjusted for rounding.
F2	Represents an unvested time-based restricted stock award granted on April 1, 2023, which shall vest over 3 years in one-third increments , beginning on April 1, 2024, and on each anniversary thereafter, subject to continued employment.
F3	Represents an unvested time-based restricted stock award granted on April 1, 2024, which shall vest over the three years in one-third increments, beginning on April 1, 2025, and on each anniversary thereafter, subject to continued employment
F4	Represents an unvested time based restricted stock award grated on April 1, 2025, which vests over 3 years in one-third increments, beginning April 1, 2026, and on each anniversary thereafter subject to continued employment
F5	Granted pursuant to Seacoast Banking Corporation of Florida's 2013 Incentive Plan.
F6	Vests over 3 years in one-third increments each anniversary of the date of grant beginning on the first anniversary of the date of grant (the date indicated), subject to continuous employment on each vesting date and the Company's banking subsidiary meets certain capital requirements.