Castellum (NYSE: CTM) signs teaming agreement with Quarrio Corporation

Rhea-AI Filing Summary

Castellum, Inc. reported that on August 12, 2025 it issued a press release announcing a teaming agreement with Quarrio Corporation. The company filed this information as an 8-K under "Other Events" and attached the full press release as Exhibit 99.1. Castellum’s common stock trades on the NYSE American under the symbol CTM.

8-K Event Classification

2 items: 8.01, 9.01

2 items

Item 8.01 Other Events Other

Voluntary disclosure of events the company deems important to shareholders but not covered by other items.

Item 9.01 Financial Statements and Exhibits Exhibits

Financial statements, pro forma financial information, and exhibit attachments filed with this report.

Understanding 8-K Material Events →

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UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d) of the Securities and Exchange Act of 1934

Date of Report (Date of earliest event reported): August 12, 2025

CASTELLUM, INC.

(Exact name of Registrant as specified in its charter)

Nevada

001-41526

27-4079982

(State or other jurisdiction of incorporation)

(Commission File Number)

(IRS Employer Identification No.)

1934 Old Gallows Road, Suite 350

Vienna, VA 22182

(Address of principal executive offices, including zip code)

(703) 752-6157

(Registrant’s telephone number, including area code)

Check the appropriate box below if the 8-K filing is intended to simultaneously satisfy the filing obligations of the registrant under any of the following provisions:

☐			Written communication pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
☐			Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
☐			Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
☐			Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13(c)).

Securities registered pursuant to Section 12(b) of the Act:

Title of each class

Trading Symbol(s)

Name of each exchange on which registered

Common stock, par value $0.0001 per share

CTM

NYSE American LLC

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2).

Emerging growth company ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☒

Item 8.01 Other Events

On August 12, 2025, Castellum, Inc. issued a press release announcing a teaming agreement with Quarrio Corporation. The full text of the press release is attached hereto as Exhibit 99.1 and is incorporated herein by reference.

Item 9.01 Financial Statements and Exhibits.

(d) Exhibits.

Exhibit No.			Exhibit Title
99.1			Press Release dated August 12, 2025
104			Cover Page Interactive Data File (embedded within the Inline XBRL document).

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: August 12, 2025

By:

/s/ Glen R. Ives

Name:

Glen R. Ives

Title:

Chief Executive Officer (Principal Executive Officer)

FAQ

What did Castellum, Inc. (CTM) disclose in this 8-K filing?

Castellum, Inc. disclosed that it issued a press release announcing a teaming agreement with Quarrio Corporation and filed that release as an exhibit.

When did Castellum (CTM) enter into the teaming agreement with Quarrio?

The filing states that on August 12, 2025, Castellum, Inc. issued a press release announcing a teaming agreement with Quarrio Corporation.

Which exhibit is included with Castellum’s teaming agreement 8-K?

The 8-K includes Exhibit 99.1, described as a press release dated August 12, 2025, and an Exhibit 104 cover page interactive data file.

On which exchange is Castellum, Inc. (CTM) listed and what is its security?

Castellum, Inc.’s common stock, par value $0.0001 per share, is listed on the NYSE American LLC under the trading symbol CTM.

Under which item of Form 8-K did Castellum report the teaming agreement with Quarrio?

Castellum reported the teaming agreement and related press release under Item 8.01 – Other Events of Form 8-K.

Who signed the Castellum (CTM) 8-K related to the teaming agreement with Quarrio?

The report was signed on behalf of Castellum, Inc. by Glen R. Ives, Chief Executive Officer and principal executive officer.