VIENNA, Va., July 08, 2025 (GLOBE NEWSWIRE) -- Castellum, Inc. (NYSE-American: CTM) (the “Company” and “Castellum”) and AmpliTech Group, Inc. (Nasdaq: AMPG) (“AmpliTech”) are pleased to jointly announce that the Company’s newly formed product subsidiary, Castellum Advanced Technology Products, Inc., has entered into a reseller agreement (the “Reseller Agreement”) with AmpliTech to resell AmpliTech's products to Castellum's clients. "We are thrilled to partner with AmpliTech and be able to resell AmpliTech's ...