Fourthstone LLC - 31 Dec 2025 SCHEDULE 13G Report for CoastalSouth Bancshares, Inc. Common Stock, par value $1.00 per share (COSO)

Filing Manager
Fourthstone LLC
Reporting Manager
Fourthstone LLC
Security
CoastalSouth Bancshares, Inc. Common Stock, par value $1.00 per share
Symbol
COSO
Shares outstanding
11,982,484 shares
Disclosed Ownership
959,797 shares
Ownership
8%
Form type
SCHEDULE 13G
Filing time
13 Feb 2026, 16:10:15 UTC
Date of event
31 Dec 2025
SEC
View on sec.gov

Reporting Managers (6)

Name Ownership Shares Owned sole voting power shared voting power Signature Title CIK
Fourthstone LLC 8% 959,797 0 959,797 Amy M. Stone Chief Executive Officer
Fourthstone Master Opportunity Fund Ltd 6.2% 748,448 0 748,448 Amy M. Stone Chief Executive Officer
Fourthstone GP LLC 1.8% 211,349 0 211,349 L. Phillip Stone, IV Managing Member of Fourthstone GP LLC
Fourthstone QP Opportunity Fund LP 1.6% 196,246 0 196,246 Amy M. Stone Chief Executive Officer
Fourthstone Small-Cap Financials Fund LP 0.13% 15,103 0 15,103 Amy M. Stone Chief Executive Officer
L. Phillip Stone, IV 8% 959,797 0 959,797 L. Phillip Stone, IV Self, Principal owner of Fourthstone LLC