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person · Reporting owner

MARTIN TAMMY L

Disclosed activity across 1 company

Tapewire entity
32974
SEC CIK
0001329293

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
Castellum, Inc.CTM · Entity 7164General Counsel and SecretaryOctober 01, 2026October 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 / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect16,427 Reported balance After 2026-10-01 transaction · row 1
1 source row

Row 1 · 2026-10-01 · Purchase · Acquired 1,396 · Balance 16,427

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

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Purchases/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 dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
October 01, 2026 Filed Oct 2, 2026 00:09 UTC Castellum, Inc. CTM · Entity 7164 PurchaseCommon Stock 1,396 $0.54 $747.14
Disclosure

SEC source: 0001877939-26-000087 · wk-form4_1790885383.xml · nonDerivative · entry 1

MARTIN TAMMY L · CIK 0001329293 · General Counsel and Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,427

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
July 01, 2026 Filed Jul 2, 2026 20:05 UTC Castellum, Inc. CTM · Entity 7164 PurchaseCommon Stock 1,202 $0.61 $735.62
Disclosure

SEC source: 0001877939-26-000059 · wk-form4_1783022734.xml · nonDerivative · entry 1

MARTIN TAMMY L · CIK 0001329293 · General Counsel and Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,031

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.

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March 31, 2026 Filed Mar 31, 2026 20:08 UTC Castellum, Inc. CTM · Entity 7164 GrantCommon Stock 1,329 $0.45 $603.90
Disclosure

SEC source: 0001329293-26-000002 · wk-form4_1774987730.xml · nonDerivative · entry 1

MARTIN TAMMY L · CIK 0001329293 · General Counsel and Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,829

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

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.