SBCF director sells 3,419 shares after option exercise

Seacoast Banking Corporation of Florida director Dennis J. Arczynski reported exercising and selling shares of the company’s common stock.

Rhea-AI Filing Summary

Seacoast Banking Corporation of Florida director Dennis J. Arczynski reported exercising and selling shares of the company’s common stock. On February 3, 2026, he exercised options for 3,419 shares of common stock at $14.39 per share and then sold 3,419 shares at $34.21 per share the same day.

After these transactions, he directly held 1,000 shares of common stock, with additional holdings reported in an LLC, a non‑employee directors deferred compensation plan, jointly with his spouse, and in a SEP plan. He also reported a remaining option position to buy 2,142 shares at an exercise price of $22.65 per share, expiring in 2027.

Insider Trade Summary

Exercise and Sale: 3,419 shares ($68K approx. pre-tax spread)

Exercise and Sale 8 txns

Insider ARCZYNSKI DENNIS J

Role Director

Sold 3,419 shs ($117K)

Approx. gross sale proceeds $117K

Approx. exercise cost $49K

Approx. pre-tax spread $68K

Type	Security	Shares	Price	Value
Exercise	Common Stock Right to Buy	3,419	$0.00	$0.00
Exercise	Common Stock	3,419	$14.39	$49K
Sale	Common Stock	3,419	$34.21	$117K
holding	Common Stock Right to Buy	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock Right to Buy — 2,142 contracts (Direct); Common Stock — 64,225 shares (Direct)

Footnotes (5)

1. F1. Held in LLC in which the reporting person is principal, as to which shares the reporting person has sole voting and dispositive power
2. F2. Held in Seacoast's Non-employee Directors Deferred Compensation Plan
3. F3. Held jointly with spouse
4. F4. Held in SEP Plan
5. F5. Granted pursuant to Seacoast Banking Corporation of Florida's 2013 Incentive Plan

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did SBCF director Dennis J. Arczynski report?

Dennis J. Arczynski reported exercising options for 3,419 Seacoast Banking Corporation of Florida shares at $14.39, then selling 3,419 common shares at $34.21 on February 3, 2026. The filing details his resulting direct and indirect ownership positions.

How many SBCF shares did Dennis J. Arczynski sell on February 3, 2026?

On February 3, 2026, Dennis J. Arczynski sold 3,419 shares of Seacoast Banking Corporation of Florida common stock at $34.21 per share. The sale followed the same-day exercise of options for 3,419 shares at an exercise price of $14.39.

How many SBCF shares does Dennis J. Arczynski hold directly after the reported trades?

After the reported February 3, 2026 transactions, Dennis J. Arczynski directly held 1,000 shares of Seacoast Banking Corporation of Florida common stock. The Form 4 also lists additional indirect holdings through an LLC, a deferred compensation plan, joint ownership with his spouse, and a SEP plan.

What stock options for SBCF does Dennis J. Arczynski still hold?

Dennis J. Arczynski reported a remaining option, described as a common stock right to buy 2,142 Seacoast Banking Corporation of Florida shares at an exercise price of $22.65. This option was originally granted in 2017 and is scheduled to expire in 2027.

How were Dennis J. Arczynski’s SBCF shares held according to the Form 4 footnotes?

The filing notes that some Seacoast Banking Corporation of Florida shares are held in an LLC where Arczynski has sole voting and dispositive power, in Seacoast’s non-employee directors deferred compensation plan, jointly with his spouse, and in a SEP plan, reflecting different forms of beneficial ownership.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 02/05/2026 - 04:17 PM Learn about SEC filing dates

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).

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^*

ARCZYNSKI DENNIS J

(Last) (First) (Middle)

SEACOAST BANKING CORPORATION OF FLORIDA

P. O. BOX 9012

(Street)

STUART FL 34995

(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)
02/03/2026

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	02/03/2026		M		3,419	A	$14.39	4,419	D
Common Stock	02/03/2026		S		3,419	D	$34.21	1,000	D
Common Stock								13,316	D(1)
Common Stock								37,799	D(2)
Common Stock								9,110	D(3)
Common Stock								3,000	D(4)

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(5)	$14.39	02/03/2026		M			3,419	02/03/2016	02/03/2026	Common Stock	3,419	$0	0	D
Common Stock Right to Buy(5)	$22.65							02/06/2017	02/06/2027	Common Stock	2,142		2,142	D

Explanation of Responses:

1. Held in LLC in which the reporting person is principal, as to which shares the reporting person has sole voting and dispositive power

2. Held in Seacoast's Non-employee Directors Deferred Compensation Plan

3. Held jointly with spouse

4. Held in SEP Plan

5. Granted pursuant to Seacoast Banking Corporation of Florida's 2013 Incentive Plan

Remarks:

	/s/ Kathy L. Hsu as Power of Attorney for Dennis J. Arczynski	02/05/2026
	** 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.