Castellum Inc. (OTCPK:ONOV) signed a definitive merger agreement to acquire MainNerve Federal Services, Inc. on January 1, 2021. MFSI reported $1.3 million of revenues. Several advisory board members of MFSI will be joining the Castellum advisory board in the coming weeks. The acquisition of MFSI is immediately accretive to Castellum’s revenue and EBITDA per share.