Castellum, Inc. 8-K

What Happened
Castellum, Inc. (CTM) filed a Form 8-K on May 18, 2026 to disclose, under Regulation FD, a press release about its 2026 Annual Stockholders Meeting and how to access the management presentation that will be delivered following adjournment of the meeting. The press release and the Meeting Presentation are attached as Exhibits 99.1 and 99.2 to the filing. The report was signed by Glen R. Ives, Chief Executive Officer.

Key Details

• Filing date: May 18, 2026 (Form 8-K, Regulation FD disclosure).
• Exhibit 99.1: Press release dated May 18, 2026; Exhibit 99.2: 2026 Annual Stockholders — Management Presentation.
• Presentation will be available following adjournment of the 2026 Annual Stockholders Meeting.
• The disclosure is furnished under Regulation FD and is not being “filed” for purposes of Section 18 of the Exchange Act or incorporated by reference into Securities Act filings except by specific reference.

Why It Matters
This notice gives all shareholders and investors public access to the company’s meeting materials and management presentation, which may include operational updates or strategic priorities. Because the disclosure was made under Regulation FD, Castellum intends the information to be broadly available (preventing selective disclosure). The filing does not include earnings, executive changes, or other material financial results.