Stephen R. Stone - 11 Feb 2026 Form 4 Insider Report for CoastalSouth Bancshares, Inc. (COSO)

Signature
/s/ Lauren Hemby, Chief Accouting Officer
Issuer symbol
COSO
Transactions as of
11 Feb 2026
Net transactions value
$0
Form type
4
Filing time
13 Feb 2026, 16:00:09 UTC
Previous filing
07 Jul 2025
Next filing
09 Mar 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Stone Stephen R. PRESIDENT AND CEO, Director 400 GALLERIA PARKWAY, SUITE 1900, ATLANTA /s/ Lauren Hemby, Chief Accouting Officer 13 Feb 2026 0002064783

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
transaction COSO Restricted Stock Units Award +12,000 12,000 11 Feb 2026 Common Stock 12,000 Direct F1, F2
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 Restricted stock units ("RSU") convert into shares of the issuer's common stock on a one-for-one basis.
F2 The RSUs vest 33% on 2/11/2027, 33% of 2/11/2028, and 34% on 2/11/2029.