CTM · Insider Trading

Castellum, Inc.

Every open-market purchase and sale reported by CTM officers, directors and 10%+ beneficial owners on SEC Form 4, which must be filed within two business days of the transaction. Sales often reflect scheduled 10b5-1 plans or tax withholding rather than a directional view, so read counts alongside the size and the filer.

Form 4 Filings
50
most recent
Open-Market Buys
18
code P
Sales
17
code S
Reporting Insiders
10
current holders
CTM — Recent Form 4 Transactions (latest 2026-10-01)
FiledInsiderRole TypeSharesValue
2026-10-01 Andrew Merriman Chief Operating Officer Buy +1,396 +$747
2026-10-01 Tammy L Martin General Counsel and Secretary Buy +1,396 +$747
2026-10-01 David T Bell Chief Financial Officer Buy +1,396 +$747
2026-10-01 Glen R Ives President Buy +1,700 +$910
2026-09-09 Andrew Merriman Chief Operating Officer Buy +50,000 +$30.97K
2026-07-02 Tammy L Martin General Counsel and Secretary Buy +1,202 +$736
2026-07-02 David T Bell Chief Financial Officer Buy +1,202 +$736
2026-07-02 Andrew Merriman Chief Operating Officer Buy +1,202 +$736
2026-07-02 Glen R Ives President Buy +1,262 +$772
2026-03-27 Glen R Ives President Buy +2,000 +$1.23K
2026-03-27 Charles Thomas McMillen Director Sell −30,000 −$21.13K
2026-03-27 Andrew Merriman Chief Operating Officer Buy +2,000 +$1.29K
2026-03-26 Glen R Ives President Buy +10,000 +$6.65K
2026-03-20 Charles Thomas McMillen Director Sell −55,000 −$44.10K
2026-03-18 Andrew Merriman Chief Operating Officer Buy +3,000 +$2.39K
2025-12-22 Jay O Wright General Counsel, Secretary Sell −30,000 −$31.50K
2025-12-17 Jay O Wright General Counsel, Secretary Sell −18,000 −$19.49K
2025-12-12 Jay O Wright General Counsel, Secretary Sell −188,000 −$224.09K
2025-12-02 Jay O Wright General Counsel, Secretary Sell −53,000 −$55.74K
2025-11-18 Jay O Wright General Counsel, Secretary Sell −100,000 −$115.06K
2025-11-13 Mark S Alarie Director A +100,000 deriv. —
2025-11-13 John Francis Campbell Director A +100,000 deriv. —
2025-11-13 David T Bell Chief Financial Officer A +225,000 deriv. —
2025-11-13 Glen R Ives President A +500,000 deriv. —
2025-11-13 Charles Thomas McMillen Director A +100,000 deriv. —
2025-11-13 Bernard S Champoux Director A +100,000 deriv. —
2025-11-13 Andrew Merriman Chief Operating Officer A +275,000 deriv. —
2025-11-13 Jay O Wright General Counsel, Secretary Sell −220,000 −$257.20K
2025-09-17 Jay O Wright General Counsel, Secretary Sell −100,000 −$110.50K
2025-09-12 Jay O Wright General Counsel, Secretary Sell −233,000 −$260.96K
2025-09-09 Jay O Wright General Counsel, Secretary Sell −446,700 −$498.45K
2025-09-03 Mark C Fuller — Sell −500,000 −$560.00K
2025-08-28 Jay O Wright General Counsel, Secretary Sell −64,000 −$66.70K
2025-08-26 Jay O Wright General Counsel, Secretary Sell −85,000 −$88.40K
2025-08-21 Charles Thomas McMillen Director M +125,000 +$26.50K
2025-08-20 Jay O Wright General Counsel, Secretary Sell −351,000 −$375.30K
2025-05-20 Mark C Fuller Director Sell −500,000 −$524.00K
2025-05-20 Jay O Wright General Counsel, Secretary MIXED −500,000 −$527.78K
2025-03-07 Jay O Wright General Counsel, Secretary Sell −500,000 −$717.45K
2025-03-06 Mark C Fuller Director MIXED −550,000 −$710.27K
2025-01-24 Glen R Ives President A +500,000 deriv. —
2025-01-24 Andrew Merriman Chief Operating Officer A +325,000 deriv. —
2025-01-03 Charles Thomas McMillen Director M +100,028 +$21.21K
2024-09-05 Jay O Wright General Counsel, Secretary Buy +272,300 +$44.66K
2024-09-04 Jay O Wright General Counsel, Secretary Buy +44,400 +$7.33K
2024-08-30 Jay O Wright General Counsel, Secretary Buy +61,597 +$10.10K
2024-08-29 Jay O Wright General Counsel, Secretary Buy +97,903 +$15.96K
2024-08-14 Jay O Wright General Counsel, Secretary Buy +115,240 +$16.59K
2024-07-03 Glen R Ives President A +750,000 deriv. —
2024-07-03 Bernard S Champoux Director A +250,000 deriv. —
CTM — Current Insider Holders
InsiderRole Shares HeldValue
Jay O Wright General Counsel, Secretary 16,232,966 $9.21M
Mark C Fuller CEO, President 14,977,112 $8.49M
Andrew Merriman Chief Operating Officer 589,927 $334.55K
Charles Thomas McMillen Director 231,015 $131.01K
Glen R Ives President 202,578 $114.88K
Bernard S Champoux Director 104,536 $59.28K
John Francis Campbell Director 76,117 $43.17K
Mark S Alarie Director 62,500 $35.44K
David T Bell Chief Financial Officer 18,651 $10.58K
Tammy L Martin General Counsel and Secretary 16,427 $9.32K
CTM Insider Trading FAQ
Who are the insiders at CTM?
10 officers, directors and 10%+ beneficial owners currently report holdings in CTM via SEC Form 4.
Are CTM insiders buying or selling?
Across the 50 most recent Form 4 filings for CTM, 18 were open-market purchases (code P) and 17 were sales (code S). Sales frequently reflect scheduled 10b5-1 plans or tax withholding rather than a view on the stock.
How current is CTM insider data?
Form 4 must be filed within two business days of the transaction, so this is close to real time. The most recent CTM filing is dated 2026-10-01.
How to read Form 4 activity

Form 4 reports a change in beneficial ownership by an officer, director or 10%+ holder, and must be filed within two business days of the transaction — so this is close to real time, unlike the 45-day-lagged 13F institutional data.

Transaction codes matter more than the raw buy/sell count. Code P is an open-market purchase — an insider choosing to buy with their own money, which is the signal most research treats as informative. Code S is a sale, but sales are frequently pre-scheduled under a 10b5-1 plan or cover tax withholding on vesting equity, so a run of sales often says nothing directional. Codes A and M are grants and option exercises rather than open-market decisions.

Full filing history and per-insider positions are on the CTM quote page; the site-wide leaderboard is on the insider transactions hub.

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.