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Disclosery

CTM CASTELLUM INC

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COM NEW (common), issuer CIK 1877939

42 managers (42 13F filers) reported a position in CTM shares at 2025-09-30, 8,505,651 shares in all. 14 filers opened a position and 5 filers sold out during the quarter.

Managers
42
13F filers
42
New
14
Added
16
Reduced
4
Sold out
5
Shares held by filers
8,505,651

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, Q3 2025

Filers in the available 13F reports with a share position at 2025-09-30, 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
ESSEX INVESTMENT MANAGEMENT CO LLC2,153,617$2.35M0.36%+63,11713F-HRTimeline
VANGUARD GROUP INCin group VANGUARD GROUP INC1,277,915$1.39M<0.01%+225,93713F-HRTimelineGroup
GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC723,527$789K<0.01%+124,32913F-HRTimelineGroup
Meridian Wealth Management, LLC684,600$746K0.03%+67,80013F-HRTimeline
Legato Capital Management LLC621,409$677K0.07%013F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC368,632$402K<0.01%new13F-HRTimelineGroup
Bank of New York Mellon Corpin group Bank of New York Mellon Corp350,002$382K<0.01%-149,99913F-HRTimelineGroup
JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC335,704$366K<0.01%+140,97113F-HRTimelineGroup
STATE STREET CORPin group STATE STREET CORP303,900$331K<0.01%+147,90013F-HRTimelineGroup
BlackRock, Inc.in group BlackRock, Inc.265,486$289K<0.01%+138,06513F-HRTimelineGroup
Savvy Advisors, Inc.227,000$247K0.01%+35,90013F-HRTimeline
XTX Topco Ltdin group XTX Topco Ltd204,717$223K0.01%+68,92113F-HRTimelineGroup
NORTHERN TRUST CORPin group NORTHERN TRUST CORP140,483$153K<0.01%+46,36313F-HRTimelineGroup
Centiva Capital, LP122,228$133K0.01%new13F-HRTimeline
BRIDGEWAY CAPITAL MANAGEMENT, LLC94,794$103K<0.01%new13F-HRTimeline
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP77,565$84.5K<0.01%+44,56913F-HRTimelineGroup
MORGAN STANLEYin group MORGAN STANLEY73,714$80.3K<0.01%new13F-HR/ATimelineGroup
Quadrature Capital Ltdin group Quadrature Capital Ltd55,719$60.5K<0.01%+34,63013F-HRTimelineGroup
Almanack Investment Partners, LLC.50,000$54.5K0.01%013F-HRTimeline
PKS Advisory Services, LLC42,222$46K0.01%013F-HRTimeline
Pathstone Holdings, LLCin group Pathstone Holdings, LLC31,179$34K<0.01%+15,58913F-HRTimelineGroup
CITIGROUP INCin group CITIGROUP INC28,979$31.6K<0.01%-2,64913F-HRTimelineGroup
KESTRA PRIVATE WEALTH SERVICES, LLCin group Kestra Advisory Services, LLC27,250$29.7K<0.01%013F-HRTimelineGroup
Cubist Systematic Strategies, LLC26,266$28.6K<0.01%-67,88613F-HRTimeline
TWO SIGMA SECURITIES, LLC25,739$28.1K<0.01%new13F-HRTimeline
UBS Group AGin group UBS Group AG21,781$23.7K<0.01%+21,70513F-HRTimelineGroup
SUSQUEHANNA INTERNATIONAL GROUP, LLPin group SUSQUEHANNA INTERNATIONAL GRO…17,691$19.3K<0.01%-1913F-HRTimelineGroup
Revisor Wealth Management LLC17,941$18.8K0.01%new13F-HRTimeline
Global Retirement Partners, LLC16,439$17.9K<0.01%+11,62713F-HRTimeline
Independent Advisor Alliance15,941$17.4K<0.01%new13F-HRTimeline
TCFG WEALTH MANAGEMENT, LLCin group TCFG Investment Advisors, LLC15,596$17K0.01%new13F-HR/ATimelineGroup
GK Wealth Management LLC15,204$16.6K0.01%new13F-HRTimeline
Blue Trust, Inc.14,724$16K<0.01%013F-HRTimeline
Bay Colony Advisory Group, Inc d/b/a Ba…12,630$13.8K<0.01%new13F-HRTimeline
Inscription Capital, LLC12,500$13.6K<0.01%013F-HRTimeline
New Century Financial Group, LLC12,000$13.1K0.02%013F-HRTimeline
Creative Planningin group Creative Planning10,000$10.9K<0.01%013F-HRTimelineGroup
Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T…9,034$9.85K<0.01%new13F-HRTimelineGroup
BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/683$744<0.01%+9413F-HR/ATimelineGroup
JONES FINANCIAL COMPANIES LLLPin group JONES FINANCIAL COMPANIES LLLP500$570<0.01%new13F-HRTimelineGroup
Point72 (DIFC) Ltd309$337<0.01%new13F-HRTimeline
JPMORGAN CHASE & COin group JPMORGAN CHASE & CO31$34<0.01%new13F-HR/ATimelineGroup