Reported relationships
Latest disclosed role at each company.
| Company | Last reported as | Report date | Published |
|---|---|---|---|
| Castellum, Inc.CTM · Entity 7164 | Chief Operating Officer | October 01, 2026 | October 02, 2026 |
Disclosed balances
About these balances
Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.
Castellum, Inc.
Report date October 01, 2026 · Filed October 02, 2026
| Security / award | Ownership account | Disclosed shares / units | Disclosure context |
|---|---|---|---|
| Common StockSEC Table I · non-derivative | Direct | 589,927 |
Reported balance
After 2026-10-01 transaction · row 1
1 source rowRow 1 · 2026-10-01 · Purchase · Acquired 1,396 · Balance 589,927 F1: Pursuant to the terms of the Castellum, Inc. 2025 Employee Stock Purchase Plan, the reporting person purchased 1,396 shares of common stock of the Registrant. The per share purchase price was calculated at a discount of fifteen percent to the closing price of the Registrant's common stock as quoted on the NYSE American LLC on September 30, 2026. |
Filing footnotes · ownership attribution and instrument terms
F1: Pursuant to the terms of the Castellum, Inc. 2025 Employee Stock Purchase Plan, the reporting person purchased 1,396 shares of common stock of the Registrant. The per share purchase price was calculated at a discount of fifteen percent to the closing price of the Registrant's common stock as quoted on the NYSE American LLC on September 30, 2026.
Transaction history
JSON APIPurchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”
The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.
| Transaction date | Company | Activity / security | Shares / units | Reported price | Reported value | Details |
|---|---|---|---|---|---|---|
| October 01, 2026 Filed Oct 2, 2026 00:08 UTC | Castellum, Inc. CTM · Entity 7164 | PurchaseCommon Stock | 1,396 | $0.54 | $747.14 |
DisclosureSEC source: 0001877939-26-000085 · wk-form4_1790885326.xml · nonDerivative · entry 1 Merriman Andrew · CIK 0002036177 · Chief Operating Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 589,927 F1 · price: Pursuant to the terms of the Castellum, Inc. 2025 Employee Stock Purchase Plan, the reporting person purchased 1,396 shares of common stock of the Registrant. The per share purchase price was calculated at a discount of fifteen percent to the closing price of the Registrant's common stock as quoted on the NYSE American LLC on September 30, 2026. Read SEC document |
| September 09, 2026 Filed Sep 9, 2026 20:02 UTC | Castellum, Inc. CTM · Entity 7164 | PurchaseCommon Stock | 10,000 | $0.62 | $6,200.00 |
DisclosureSEC source: 0001877939-26-000079 · wk-form4_1788984163.xml · nonDerivative · entry 2 Merriman Andrew · CIK 0002036177 · Chief Operating Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 588,531 Read SEC document |
| September 09, 2026 Filed Sep 9, 2026 20:02 UTC | Castellum, Inc. CTM · Entity 7164 | PurchaseCommon Stock | 40,000 | $0.62 | $24,772.00 |
DisclosureSEC source: 0001877939-26-000079 · wk-form4_1788984163.xml · nonDerivative · entry 1 Merriman Andrew · CIK 0002036177 · Chief Operating Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 578,531 Read SEC document |
| July 01, 2026 Filed Jul 2, 2026 20:07 UTC | Castellum, Inc. CTM · Entity 7164 | PurchaseCommon Stock | 1,202 | $0.61 | $735.62 |
DisclosureSEC source: 0001877939-26-000061 · wk-form4_1783022819.xml · nonDerivative · entry 1 Merriman Andrew · CIK 0002036177 · Chief Operating Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 538,531 F1 · price: Pursuant to the terms of the Castellum, Inc. 2025 Employee Stock Purchase Plan, the reporting person purchased 1,202 shares of common stock of the Registrant. The per share purchase price was calculated at a discount of fifteen percent to the closing price of the Registrant's common stock as quoted on the NYSE American LLC on June 30, 2026. Read SEC document |
| March 31, 2026 Filed Mar 31, 2026 20:08 UTC | Castellum, Inc. CTM · Entity 7164 | GrantCommon Stock | 1,329 | $0.45 | $603.90 |
DisclosureSEC source: 0002036177-26-000004 · wk-form4_1774987678.xml · nonDerivative · entry 1 Merriman Andrew · CIK 0002036177 · Chief Operating Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 537,329 F1 · acquired: Pursuant to the terms of the Castellum, Inc. 2025 Employee Stock Purchase Plan, the reporting person purchased 1,329 shares of common stock of the Registrant. The per share purchase price was calculated at a discount of fifteen percent to the closing price of the Registrant's common stock as quoted on the NYSE American LLC on March 30, 2026. Read SEC document |
| March 27, 2026 Filed Mar 27, 2026 20:00 UTC | Castellum, Inc. CTM · Entity 7164 | PurchaseCommon Stock | 2,000 | $0.64 | $1,285.20 |
DisclosureSEC source: 0002036177-26-000002 · wk-form4_1774641642.xml · nonDerivative · entry 1 Merriman Andrew · CIK 0002036177 · Chief Operating Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 536,000 Read SEC document |
| March 18, 2026 Filed Mar 18, 2026 20:43 UTC | Castellum, Inc. CTM · Entity 7164 | PurchaseCommon Stock | 3,000 | $0.80 | $2,394.90 |
DisclosureSEC source: 0001877939-26-000018 · wk-form4_1773866630.xml · nonDerivative · entry 1 Merriman Andrew · CIK 0002036177 · Chief Operating Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 534,000 Read SEC document |
| November 11, 2025 Filed Nov 13, 2025 11:52 UTC | Castellum, Inc. CTM · Entity 7164 | GrantStock Options · Derivative | 275,000 | $0.00 Strike: $1.19 | $0.00 |
DisclosureSEC source: 0001877939-25-000121 · wk-form4_1763034752.xml · derivative · entry 1 Merriman Andrew · CIK 0002036177 · Chief Operating Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 275,000 Underlying: Common Stock · 275,000 shares Expires 2032-11-10 F1 · derivative.exercise_date: In connection with his continued employment, on November 11, 2025 Mr. Merriman received 275,000 stock options issued pursuant to the Castellum, Inc. Second Amended 2021 Stock Incentive Plan to purchase 275,000 shares of common stock, which vest ratably over twenty months, commencing December 1, 2025. Read SEC document |
| January 22, 2025 Filed Jan 24, 2025 21:02 UTC | Castellum, Inc. CTM · Entity 7164 | GrantStock Options · Derivative | 325,000 | $1.07 Strike: $1.07 | $347,750.00 |
DisclosureSEC source: 0002036177-25-000002 · wk-form4_1737752515.xml · derivative · entry 1 Merriman Andrew · CIK 0002036177 · Chief Operating Officer 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 325,000 Underlying: Common Stock · 325,000 shares Expires 2032-01-21 F1 · derivative.exercise_date: (1) In connection with his continued employment, on January 22, 2025 Mr. Merriman received 325,000 stock options issued pursuant to the Castellum, Inc. Amended 2021 Stock Incentive Plan to purchase 325,000 shares of restricted common stock. 162,500 of the stock options to purchase 162,500 shares of restricted common stock vest ratably over thirty-six months and 162,500 stock options to purchase 162,500 shares of restricted common stock begin to vest ratably over thirty-six months upon the Company being awarded a certain government contract. Read SEC document |
Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.