Dennis J. Arczynski - 31 Jul 2026 Form 4 Insider Report for SEACOAST BANKING CORP OF FLORIDA (SBCF)

Reporting relationship: Director
Issuer ticker: SBCF
Reported as of: 31 Jul 2026
Net transaction value: $0
SEC form: 4
Accepted by SEC: 04 Aug 2026, 19:57:35 UTC
Prior SEC filing: 05 Feb 2026
Source filing: View source filing
Reporting owner signature: /s/ Kathy L. Hsu as Power of Attorney for Dennis J. Arczynski

Key filing fact

Dennis J. Arczynski filed Form 4 for SEACOAST BANKING CORP OF FLORIDA (SBCF) on 04 Aug 2026.

Key facts

This page summarizes Dennis J. Arczynski's Form 4 filing for SEACOAST BANKING CORP OF FLORIDA (SBCF).
1 reported transaction and 1 derivative row are listed below.
Accepted by SEC: 04 Aug 2026, 19:57.

Change

Previous filing in this sequence was filed on 05 Feb 2026.
Current net transaction value: $0.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001398345 Primary reporting owner

ARCZYNSKI DENNIS J

Relationship: Director
Address: SEACOAST BANKING CORPORATION OF FLORIDA, P. O. BOX 9012, STUART
Signature: /s/ Kathy L. Hsu as Power of Attorney for Dennis J. Arczynski
Signature date: 04 Aug 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

SBCF transaction

Common Stock

Award

Transaction value
Shares: +2,015
Change %: +15%
Price: $34.74^*
Shares after: 15,331
Date: 31 Jul 2026
Ownership: Direct
Footnotes: F1, F2

SBCF holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 37,800
Date: 31 Jul 2026
Ownership: Direct
Footnotes: F3

SBCF holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 1,000
Date: 31 Jul 2026
Ownership: Direct

SBCF holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 9,110
Date: 31 Jul 2026
Ownership: Direct
Footnotes: F4

SBCF holding

Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 3,000
Date: 31 Jul 2026
Ownership: Direct
Footnotes: F5

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

SBCF holding Derivative

Common Stock Right to Buy

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 2,142
Date: 31 Jul 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,142
Exercise price: $22.65
Footnotes: F6

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 6 footnotes

Footnote F1

Stock issued from Seacoast's 2021 Incentive Plan for Board Services in 2026

Footnote F2

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

Footnote F3

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

Footnote F4

Held jointly with spouse

Footnote F5

Held in SEP Plan

Footnote F6

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

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