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VANCOUVER, British Columbia, May 12, 2026 (GLOBE NEWSWIRE) -- Canterra Minerals Corporation (TSXV: CTM) (OTCQB: CTMCF) (FSE: DXZB) (“Canterra” or the “Company”) continues to advance its critical and precious metals projects in Central Newfoundland. Winter diamond drilling of 8 holes totalling 2,386 metres was completed at its Buchans project, with assay results anticipated in Q2 2026.

Revenue Increase of 23% Driven by Ramp Up of Long-Term Contracts Won in 2025; Enters Second Quarter with a Record Backlog of $273.3 Million Revenue Increase of 23% Driven by Ramp Up of Long-Term Contracts Won in 2025; Enters Second Quarter with a Record Backlog of $273.3 Million

VIENNA, Va., April 23, 2026 (GLOBE NEWSWIRE) -- Castellum, Inc. (NYSE-American: CTM) (“Castellum” “CTM”, “we” or the “Company”), a cybersecurity, electronic warfare, and software services company focused on the federal government, announces that it has achieved Cybersecurity Maturity Model Certification (“CMMC”) Level 2 following a comprehensive assessment conducted by an accredited Certified Third‑Party Assessment Organization (“C3PAO”).

VIENNA, Va., March 04, 2026 (GLOBE NEWSWIRE) -- Castellum, Inc. (“Castellum” “CTM”, “we” or the “Company”) (NYSE-American: CTM), a cybersecurity, electronic warfare, and software services company focused on the federal government, announces certain unaudited highlights of its operating results for its year ended December 31, 2025.

VIENNA, Va., Feb. 17, 2026 (GLOBE NEWSWIRE) -- Castellum, Inc. (NYSE-American: CTM) ("Castellum" or "CTM"), a cybersecurity, electronic warfare, and software engineering services company focused on the federal government, announces that it has retired in full the $400,000 principal balance on its sole remaining note payable to Emil Kaunitz.

VIENNA, Va., Jan. 07, 2026 (GLOBE NEWSWIRE) -- Castellum, Inc. (NYSE-American: CTM) (“Castellum” or “CTM”), a cybersecurity, electronic warfare, and software engineering solutions and services technology company focused on the federal government, announces that its Specialty Systems, Inc. (“SSI”) subsidiary  has been re-awarded the $49.8 million five-and a half year contract for Software Support Activities (“SSA”) support of the Naval Air Warfare Center Aircraft Division (“NAWCAD”) Lakehurst (“LKE”) (the “NAWCAD LKE Contract”), a leader in Aircraft Launch and Recovery Equipment (“ALRE”) and Naval Aviation Support Equipment (“SE”) supporting a broad portfolio of systems that enable carrier-based and expeditionary naval aviation operations.

VIENNA, Va., Dec. 09, 2025 (GLOBE NEWSWIRE) -- Castellum, Inc. (NYSE-American: CTM) (the “Company”, “CTM” and “Castellum”), a cybersecurity, electronic warfare, and software services and solutions company focused on the federal government, releases this letter to shareholders from Chief Executive Officer (“CEO”), Glen Ives.