13F Insight
DOSSIER · 13F Holders · Q1 2026Inflation hedgeYield
COSO

CoastalSouth Bancshares, Inc.

82 institutions still hold CoastalSouth Bancshares, Inc. as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 19058X207·82 13F holders·last filed Mar 31, 2026
Market cap
—
▼ 5.2%
vs prior quarter
13F value held
$147M
45.0% inst. owned
of float
Holders
82
+89 QoQ
filers reporting
Activity
+43 / −19
+1,008 added · −836 reduced
this quarter
Concentration
18.47%
Fourthstone LLC #1
top holder share
AI Holders Summary · Q1 2026

82 institutions reported COSO in Q1 2026. Fourthstone LLC leads at 18.5% of the visible book. +89 net new institutions vs prior quarter — accumulation reading.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
Fourthstone LLC
CIK 0001767803
$27M1.1M4.59%Q1 202602
Patriot Financial Partners GP II, L.P.
CIK 0002061817
$17M719K5.21%Q4 202503
BlackRock, Inc.
CIK 0002012383
$12M492K0.00%Q1 202604
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$10M406K0.00%Q1 202605
ALLIANCEBERNSTEIN L.P.
CIK 0001109448
$9M398K0.00%Q1 202606
Berkeley Capital Partners, LLC
CIK 0001667694
$9M361K2.06%Q1 202607
MENDON CAPITAL ADVISORS CORP
CIK 0001177043
$8M330K3.14%Q1 202608
North Reef Capital Management LP
CIK 0001867831
$8M321K0.27%Q1 202609
Curi Capital, LLC
CIK 0001332905
$7M303K0.13%Q1 202610
GOLDMAN SACHS GROUP INC
CIK 0000886982
$6M258K0.00%Q1 202611
ENDEAVOUR CAPITAL ADVISORS INC
CIK 0001218749
$6M242K1.35%Q1 202612
EJF Capital LLC
CIK 0001353254
$5M193K3.34%Q1 202613
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$5M191K0.00%Q1 202614
STATE STREET CORP
CIK 0000093751
$3M126K0.00%Q1 202615
RAFFLES ASSOCIATES LP
CIK 0001169581
$3M121K2.59%Q1 202616
KLCM Advisors, Inc.
CIK 0001166620
$3M108K0.22%Q1 202617
TWO SIGMA INVESTMENTS, LP
CIK 0001179392
$2M100K0.00%Q1 202618
Bleakley Financial Group, LLC
CIK 0001936953
$2M88K0.03%Q1 202619
BANC FUNDS CO LLC
CIK 0001029311
$2M86K0.39%Q1 202620
FIRST MANHATTAN CO. LLC.
CIK 0000728083
$2M78K0.01%Q1 2026
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