DOSSIER · 13F Holders · Q1 2026
CTM

CASTELLUM INC

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

CUSIP 14838T204·32 13F holders·last filed Mar 31, 2026
Market cap
13F value held
$5M
visible holders
Holders
32
filers reporting
Concentration
37.75%
VANGUARD CAPITAL MANAGEMENT LLC #1
top holder share
AI Holders Summary · Q1 2026

32 institutions reported CTM in Q1 2026. VANGUARD CAPITAL MANAGEMENT LLC leads at 37.7% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
VANGUARD CAPITAL MANAGEMENT LLC
CIK 0002100119· Index
$2M3.1M0.00%Q1 2026
02
Meridian Wealth Management, LLC
CIK 0001697300
$621K863K0.02%Q2 2026
03
GEODE CAPITAL MANAGEMENT, LLC
CIK 0001214717· Index
$557K945K0.00%Q1 2026
04
CAPTRUST FINANCIAL ADVISORS
CIK 0001512024
$369K626K0.00%Q1 2026
05
VANGUARD FIDUCIARY TRUST CO
CIK 0000933478· Index
$247K418K0.00%Q1 2026
06
STATE STREET CORP
CIK 0000093751
$219K304K0.00%Q2 2026
07
BlackRock, Inc.
CIK 0002012383
$191K265K0.00%Q2 2026
08
Savvy Advisors, Inc.
CIK 0002003633
$159K220K0.00%Q2 2026
09
JANE STREET GROUP, LLC
CIK 0001595888· Market maker
$140K237K0.00%Q1 2026
10
NORTHERN TRUST CORP
CIK 0000073124· Index
$107K182K0.00%Q1 2026
11
UBS Group AG
CIK 0001610520
$91K154K0.00%Q1 2026
12
SEI INVESTMENTS CO
CIK 0000350894
$72K122K0.00%Q1 2026
13
BRIDGEWAY CAPITAL MANAGEMENT, LLC
CIK 0001107261
$56K95K0.00%Q1 2026
14
HUB Investment Partners, LLC
CIK 0001841815
$41K57K0.00%Q2 2026
15
Almanack Investment Partners, LLC.
CIK 0001680613
$36K50K0.00%Q2 2026
16
ARQ WEALTH ADVISORS, LLC
CIK 0001811827
$23K35K0.00%Q2 2026
17
KESTRA PRIVATE WEALTH SERVICES, LLC
CIK 0001649451
$20K27K0.00%Q2 2026
18
Pathstone Holdings, LLC
CIK 0002011612
$18K31K0.00%Q1 2026
19
Vanguard Global Advisers, LLC
CIK 0001811242· Index
$16K27K0.00%Q1 2026
20
CAPITAL ADVISORS INC/OK
CIK 0000860828
$16K22K0.00%Q2 2026
Page 1 of 2
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Insiders at CASTELLUM INC
Merriman AndrewWright Jay OIves Glen RBell David TAlarie Mark SCampbell John FrancisChampoux Bernard SMcmillen Charles Thomas