Public ownership evidence

Castellum, Inc. (CTM) Ownership Disclosures

Read CTM insider transactions, institutional 13F filings and Congressional disclosures with report dates, public availability and original receipts.

As of 2026-10-10T12:08:28.848Z

Recent Form 4 activity

2026-10-012026-10-01MARTIN TAMMY LP1,396Not reported
2026-10-012026-10-01Bell David TP1,396Not reported
2026-10-012026-10-01Merriman AndrewP1,396Not reported
2026-10-012026-10-01Ives Glen RP1,700Not reported
2026-09-092026-09-09Merriman AndrewP10,000Not reported
2026-09-092026-09-09Merriman AndrewP40,000Not reported

90-day public availability window, up to 50 records.

Recent institutional filing receipts

These are raw ticker-matched positions in recent 13F receipts, including amendments. They are not deduplicated current ownership totals. Open the manager profile to inspect its effective filing book.

XTX Topco Ltd2026-06-302026-08-1521,910$15,773None
OSAIC HOLDINGS, INC.2026-06-302026-08-15215$154None
JANE STREET GROUP, LLC2026-06-302026-08-154,022$2,895None
JANE STREET GROUP, LLC2026-06-302026-08-15125,049$90,023None
JONES FINANCIAL COMPANIES LLLP2026-06-302026-08-156,366$4,520None
BRIDGEWAY CAPITAL MANAGEMENT, LLC2026-06-302026-08-1594,794$68,242None
TWO SIGMA SECURITIES, LLC2026-06-302026-08-1540,530$29,178None
VANGUARD CAPITAL MANAGEMENT LLC2026-06-302026-08-143,093,768$2,227,513None
Pathstone Holdings, LLC2026-06-302026-08-1431,179$22,446None
Vanguard Global Advisers, LLC2026-06-302026-08-1427,344$19,688None
Inscription Capital, LLC2026-06-302026-08-1412,500$8,999None
UBS Group AG2026-06-302026-08-1419,503$14,042None
UBS Group AG2026-06-302026-08-14189,455$136,408None
Creative Planning2026-06-302026-08-1450,000$35,995None
Virtu Financial LLC2026-06-302026-08-14168,401$121,000None
CAPTRUST FINANCIAL ADVISORS2026-06-302026-08-14626,100$450,729None
VANGUARD FIDUCIARY TRUST CO2026-06-302026-08-14492,717$354,756None
NORTHERN TRUST CORP2026-06-302026-08-14171,420$123,405None
GEODE CAPITAL MANAGEMENT, LLC2026-06-302026-08-13163,630$117,797None
GEODE CAPITAL MANAGEMENT, LLC2026-06-302026-08-13652,407$469,840None
HARBOUR INVESTMENTS, INC.2026-06-302026-08-13150$108None
Tower Research Capital LLC (TRC)2026-06-302026-08-125,872$4,227None
BlackRock, Inc.2026-06-302026-08-08265,486$191,123None
STATE STREET CORP2026-06-302026-08-08303,900$218,778None
Clearstead Advisors, LLC2026-06-302026-08-07100$72None
Meridian Wealth Management, LLC2026-06-302026-08-06863,200$621,418None
PKS Advisory Services, LLC2026-06-302026-08-0518,931$13,628None
Savvy Advisors, Inc.2026-06-302026-08-04220,300$158,594None
HUB Investment Partners, LLC2026-06-302026-08-0157,414$41,332None
Almanack Investment Partners, LLC.2026-06-302026-07-3150,000$35,995None
KESTRA PRIVATE WEALTH SERVICES, LLC2026-06-302026-07-2927,250$19,617None
TD Waterhouse Canada Inc.2026-06-302026-07-28500$361None
ARQ WEALTH ADVISORS, LLC2026-06-302026-07-2535,000$22,750None
Cape Investment Advisory, Inc.2026-06-302026-07-242,000$1,440None
Welch Group, LLC2026-06-302026-07-2410,000$7,199None
CAPITAL ADVISORS INC/OK2026-06-302026-07-2422,000$15,838None
ACT Advisors, LLC.2026-06-302026-07-2321,074$15,171None
Blue Trust, Inc.2026-06-302026-07-2214,724$10,600None

90-day public filing window, up to 50 source positions.

Recent Congressional disclosures

No matching Congressional transactions were returned in this source preview.

No records are available for this view.

Bounded public source preview, up to 25 disclosed events.

How to read the disclosure dates

The tables report different things: insider transactions, institutional positions and Congressional transaction ranges. Read each table with its source dates and units. They cannot be added into a combined ownership percentage.

  1. Company insiders

    SEC Form 4 purchases, sales and awards report transactions and their public filing availability.

  2. Institutional managers

    13F reports disclose delayed quarter-end positions. They are not a record of trades between quarters.

  3. Congressional filers

    Periodic transaction reports disclose transaction dates and amount brackets. Public filing dates determine what researchers could know.

Read the transaction codes

Awards use transaction code A, purchases P and sales S. An acquisition from an award is not the same as an open-market purchase. Joint filers may share a transaction. Use original receipts and availability dates to interpret the events.