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CTM CASTELLUM INC

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COM NEW (common), issuer CIK 1877939

25 managers (27 13F filers) reported a position in CTM shares at 2026-03-31, 7,735,010 shares in all. 5 filers opened a position and 19 filers sold out during the quarter.

Managers
25
13F filers
27
New
5
Added
4
Reduced
5
Sold out
19
Shares held by filers
7,735,010

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q1 2026

Filers in the available 13F reports with a share position at 2026-03-31, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
VANGUARD GROUP INCgroup of 3 filers holding3,526,925$2.08MnewTimeline
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC944,899$557K<0.01%+171,17513F-HRTimelineGroup
Meridian Wealth Management, LLC785,800$463K0.02%+40,65013F-HRTimeline
CAPTRUST FINANCIAL ADVISORS626,100$369K<0.01%new13F-HRTimeline
STATE STREET CORPin group STATE STREET CORP303,900$179K<0.01%013F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.265,486$157K<0.01%013F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC236,774$140K<0.01%-107,06813F-HRTimelineGroup
Savvy Advisors, Inc.221,800$131K<0.01%013F-HRTimeline
NORTHERN TRUST CORPin group NORTHERN TRUST CORP181,902$107K<0.01%-28,70913F-HRTimelineGroup
UBS Group AGin group UBS Group AG153,529$90.6K<0.01%-2,001,62813F-HRTimelineGroup
SEI INVESTMENTS COin group SEI INVESTMENTS CO121,574$71.7K<0.01%-211,49713F-HRTimelineGroup
BRIDGEWAY CAPITAL MANAGEMENT, LLC94,794$55.9K<0.01%013F-HRTimeline
Almanack Investment Partners, LLC.50,000$29.5K<0.01%013F-HRTimeline
HRT FINANCIAL LP33,836$19K<0.01%new13F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC31,179$18.4K<0.01%013F-HRTimelineGroup
KESTRA PRIVATE WEALTH SERVICES, LLCin group Kestra Advisory Services, LLC27,250$16.1K<0.01%013F-HRTimelineGroup
CAPITAL ADVISORS INC/OK22,000$13K<0.01%new13F-HRTimeline
Ground Swell Capital, LLC21,090$12.4K0.02%new13F-HRTimeline
Creative Planningin group Creative Planning20,320$12K<0.01%+32013F-HRTimelineGroup
TWO SIGMA SECURITIES, LLC15,222$8.97K<0.01%new13F-HRTimeline
Blue Trust, Inc.14,724$8.68K<0.01%013F-HRTimeline
Inscription Capital, LLC12,500$7.37K<0.01%013F-HRTimeline
Welch Group, LLC10,000$5.89K<0.01%013F-HRTimeline
CITIGROUP INCin group CITIGROUP INC7,040$4.15K<0.01%-19,79113F-HRTimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP6,366$3.95K<0.01%+20013F-HRTimelineGroup