Harpoon Ventures

Harpoon Ventures is a San Diego-based early-stage venture capital firm with $300 million in assets under management, co-founded by former Navy SEAL Larsen Jensen and ex-Marine William Allen, specializing in dual-use technologies with both commercial and government defense applications. The firm invests in AI, deep tech, cybersecurity, and enterprise infrastructure at early stages with a commercial-first thesis, providing founders capital alongside deep connections into the defense ecosystem and special operations community. Notable portfolio companies including Astranis, Genesis Therapeutics, Solugen, and Semgrep demonstrate range across space, biotech, chemicals, and developer tools. Ideal for early-stage founders building frontier technologies with dual-use potential who value government market access alongside commercial success, with particular strength in supporting founders with military or government backgrounds.