The round was led by Hanwha Asset Management. Existing investors, including MC2 Security Fund, AE Industrial Partners, I Squared Capital, and Yellow Sub Funding participated pro rata in the round. The investment follows a $30 million Series C investment led by MC2 Security Fund in April 2023.

ThayerMahan is a maritime technology company dedicated to providing its government and commercial clients with turn-key autonomous marine solutions, including deployment, operations, data gathering and analysis services, using state-of-the-art acoustic and electronic sensors integrated on a variety of host platforms tailored to specific mission criteria.