07:29 AM EDT, 07/08/2025 (MT Newswires) -- Castellum's (CTM) Advanced Technology Products unit has signed a reseller agreement with AmpliTech Group ( AMPG ) to resell AmpliTech's ( AMPG ) products, including low-noise amplifiers, to Castellum's clients, the companies said Tuesday.

Financial terms were not disclosed.

Castellum Advanced Technology is a newly created unit to collaborate with companies and develop its own products internally, Castellum Chief Executive Glen Ives said.

Castellum's stock was up 2.5% in recent Tuesday premarket activity, while AmpliTech's ( AMPG ) shares were flat.