Castellum, INC. 8-K Filing

Ticker: CTM · Form: 8-K · Filed: Dec 9, 2025 · CIK: 1877939

Sentiment: neutral

Filing Stats: 547 words · 2 min read · ~2 pages · Grade level 10.1 · Accepted 2025-12-09 16:01:20

Key Financial Figures

Filing Documents

01 Other Events

Item 8.01 Other Events On December 8, 2025, the Company issued a press release announcing the award of multiple missile defense agency shield IDIQ contracts. The full text of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference. On December 9, 2025, the Company issued a press release which contained a letter to its shareholders. The full text of the press release is attached hereto as Exhibit 99.2 and is incorporated herein by reference.

01 Financial Statements and Exhibits

Item 9.01 Financial Statements and Exhibits. (d) Exhibits . Exhibit No. Exhibit Title 99.1 Press Release dated December 8, 2025 99.2 Press Release dated Dece mber 9 , 2025 104 Cover Page Interactive Data File (embedded within the Inline XBRL document).

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, hereunto duly authorized. CASTELLUM, INC. Date: December 9, 2025 By: /s/ Glen R. Ives Name: Glen R. Ives Title: Chief Executive Officer (Principal Executive Officer)

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