Larsen Jensen is the Founder and Managing General Partner of Harpoon Ventures. See sector focus and contact routes.
Larsen Jensen is the Founder and Managing General Partner of Harpoon Ventures, a $300M early-stage venture capital firm he built from the ground up after previously working at Andreessen Horowitz and Lightspeed Venture Partners. His investment thesis centers on “dual-use” technologies that serve both commercial markets and the U.S. government, with a focus on seed-stage companies in defense tech, cybersecurity, artificial intelligence, enterprise infrastructure, and frontier technology. Harpoon is seed-focused and positions itself as a hands-on partner that actively helps founders navigate government contracting rather than just providing capital. While specific check sizes and lead/follow behavior are not publicly detailed, the firm’s seed focus and active operational support suggest Jensen often takes a lead or collaborative role in early deals. Notable portfolio companies include Vector, a defense-tech firm Jensen co-founded that delivers “Modern Warfare-as-a-Service” with autonomous platforms and tactical intelligence; the firm’s portfolio companies have collectively closed roughly $500 million in government deals. Jensen’s distinctive po
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