Director at Seacoast Banking (SBCF) sells 8,000 shares under 10b5-1 plan

Rhea-AI Filing Summary

SEACOAST BANKING CORP OF FLORIDA director Dennis S. Hudson III reported an open-market sale of 8,000 shares of common stock at $30.04 per share on March 16, 2026. The sale was effected under a pre-arranged Rule 10b5-1 trading plan adopted on November 21, 2025.

After the transaction, he directly holds 228,854 common shares, as well as rights to buy 55,279 shares at $31.15 per share expiring April 1, 2028 and 78,021 shares at $28.69 per share expiring April 1, 2027. Additional common shares are held indirectly through a spouse’s trust and a family partnership, indicating a substantially larger overall stake than the shares sold in this filing.

Insights

Equity governance analyst

Routine pre-planned director sale of 8,000 shares with large stake retained.

Director Dennis S. Hudson III sold 8,000 shares of SEACOAST BANKING CORP OF FLORIDA common stock at $30.04 per share on March 16, 2026. The filing labels this as an open-market sale, which is generally a strong signal compared with purely administrative transactions.

A key detail is the footnote stating the sale was executed under a Rule 10b5-1 trading plan adopted on November 21, 2025. Such plans are set up in advance and automate trades, so the timing carries less informational value about the director’s current view of the stock.

Post-transaction, Hudson directly holds 228,854 common shares and retains derivative rights to buy 55,279 shares at $31.15 and 78,021 shares at $28.69, expiring in 2028 and 2027, respectively. The filing also shows indirect holdings via a spouse’s trust and a family partnership, suggesting the 8,000-share sale represents only a small portion of his overall exposure.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

HUDSON DENNIS S III

(Last) (First) (Middle)

P.O. BOX 9012

815 COLORADO AVENUE

(Street)

STUART FL 34995-9012

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
SEACOAST BANKING CORP OF FLORIDA [ SBCF ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
03/16/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	03/16/2026		S(1)		8,000	D	$30.04	228,854	D(2)
Common Stock								18,104	D(3)
Common Stock								34,192.993	D(4)
Common Stock								9,356	D(5)
Common Stock								21,867	I	Held by Spouse in Trust
Common Stock								51,416	I	Held by Sherwood Partners, Ltd, family partnership

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Common Stock Right to Buy(6)	$31.15							(7)	04/01/2028	Common Stock	55,279		55,279	D
Common Stock Right to Buy(6)	$28.69							(7)	04/01/2027	Common Stock	78,021		78,021	D

Explanation of Responses:

1. Shares sold were effected pursuant to a Rule10b5-1 trading plan adopted by the Reporting Person on November 21, 2025

2. Shares held in Trust

3. Shares held jointly with spouse

4. Represents shares held in the Company's Retirement Savings Plan as of December 31, 2025

5. Held in IRA

6. Granted pursuant to the Company's Amended and Restated 2013 Incentive Plan

7. 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.

Remarks:

	/s/ Dennis S. Hudson, III	03/17/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did SEACOAST BANKING (SBCF) report for Dennis S. Hudson III?

SEACOAST BANKING director Dennis S. Hudson III reported selling 8,000 shares of common stock at $30.04 per share on March 16, 2026. The transaction was an open-market sale executed under a pre-arranged Rule 10b5-1 trading plan adopted in November 2025.

How many SEACOAST BANKING (SBCF) shares does Dennis S. Hudson III hold after this Form 4?

After the reported sale, Dennis S. Hudson III directly holds 228,854 shares of SEACOAST BANKING common stock. The filing also lists additional indirect holdings through a spouse’s trust and a family partnership, indicating a larger total economic interest than the direct position alone.

What stock options or rights does the SEACOAST BANKING (SBCF) director retain?

The director retains rights to buy 55,279 SEACOAST BANKING shares at $31.15 expiring April 1, 2028, and 78,021 shares at $28.69 expiring April 1, 2027. These positions, disclosed as Common Stock Rights to Buy, represent significant remaining derivative exposure.

Was the SEACOAST BANKING (SBCF) insider sale made under a Rule 10b5-1 plan?

Yes. A footnote states the 8,000-share sale was effected pursuant to a Rule 10b5-1 trading plan adopted on November 21, 2025. Such pre-arranged plans automate trades and generally reduce the significance of short-term timing decisions by the insider.

Does the SEACOAST BANKING (SBCF) director still have indirect share holdings?

Yes. The filing shows common shares held indirectly, including positions “Held by Spouse in Trust” and by Sherwood Partners, Ltd., a family partnership. These indirect holdings supplement his direct ownership, contributing to a larger combined economic interest in SEACOAST BANKING.

What does the Form 4 reveal about SEACOAST BANKING (SBCF) director’s overall exposure?

The Form 4 shows an 8,000-share sale but much larger remaining exposure. He holds 228,854 shares directly, has substantial rights to buy additional shares through derivative awards, and reports indirect holdings via family-related entities, indicating continued significant alignment with shareholders.