DOSSIER · 13F Holders · Q1 2026
MNSB

MAINSTREET BANCSHARES INC

92 institutions still hold MAINSTREET BANCSHARES INC as of Q1 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP 56064Y100·92 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$82M
visible holders
Holders
92
filers reporting
Concentration
14.39%
BANC FUNDS CO LLC #1
top holder share
AI Holders Summary · Q1 2026

92 institutions reported MNSB in Q1 2026. BANC FUNDS CO LLC leads at 14.4% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
BANC FUNDS CO LLC
CIK 0001029311
$12M531K2.19%Q1 2026
02
ALLIANCEBERNSTEIN L.P.
CIK 0001109448
$11M555K0.00%Q1 2026
03
Fourthstone LLC
CIK 0001767803
$9M385K1.45%Q1 2026
04
WELLINGTON MANAGEMENT GROUP LLP
CIK 0000902219
$8M353K0.00%Q1 2026
05
BlackRock, Inc.
CIK 0002012383
$8M348K0.00%Q1 2026
06
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$7M301K0.00%Q1 2026
07
FIRST MANHATTAN CO. LLC.
CIK 0000728083
$4M188K0.01%Q1 2026
08
DIMENSIONAL FUND ADVISORS LP
CIK 0000354204· Quasi-passive
$4M167K0.00%Q1 2026
09
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$3M147K0.00%Q1 2026
10
ACADIAN ASSET MANAGEMENT LLC
CIK 0000916542
$3M134K0.00%Q1 2026
11
UBS Group AG
CIK 0001610520
$3M113K0.00%Q1 2026
12
STATE STREET CORP
CIK 0000093751
$2M100K0.00%Q1 2026
13
Cresset Asset Management, LLC
CIK 0001761013
$2M72K0.01%Q1 2026
14
BRIDGEWAY CAPITAL MANAGEMENT, LLC
CIK 0001107261
$1M64K0.03%Q1 2026
15
AMERICAN CENTURY COMPANIES INC
CIK 0000748054
$1M53K0.00%Q1 2026
16
Squarepoint Ops LLC
CIK 0001642575
$1M51K0.00%Q1 2026
17
MENDON CAPITAL ADVISORS CORP
CIK 0001177043
$1M47K0.41%Q1 2026
18
NORTHERN TRUST CORP
CIK 0000073124· Index
$1M47K0.00%Q1 2026
19
MARSHALL WACE, LLP
CIK 0001318757
$902K44K0.00%Q4 2025
20
Vanguard Portfolio Management
CIK 0002100121· Index
$880K40K0.00%Q1 2026
Page 1 of 5
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Insiders at MAINSTREET BANCSHARES INC
Green DarrellHiggins Joan MorganHall Wendy AdelerDeleon Rafael EVari Richard AlexanderRust Patsy IDick Jeff WHersiburane Abdulhamid