Our mission is to back bold leaders shaping the next era of American innovation
Founded in 2018 by a two-time Olympic medalist and former Navy SEAL, Harpoon was built on a simple belief: technology will define geopolitics.
Our first backers, a16z and Lightspeed, bet on our vision. Today, we’re anchored by the nation’s top pensions and endowments, including a leading first responder pension fund.
We’ve worked side-by-side with our founders to secure over $1B in U.S. government contracts, spanning non-dilutive grants to $100M+ programs of record.
At Harpoon, we’re more than investors - we’re your tactical advantage.
Portfolio
We invest in audacious founders building across AI, deep tech, software infrastructure, and cybersecurity.
Investing in these areas is not only essential to restoring American technological leadership, but also ensuring strategic advantage for future generations.
“We've been fortunate to partner with Harpoon early in our journey. Today, it seems obvious to many that AI Risk is an important mission and a big market, but that wasn't the case up until recently. Larsen and team saw this before almost anyone else did. Harpoon has been instrumental to our success, from vision, through team building to enterprise and Federal sales."
Yaron Singer
CEO, Robust Intelligence
Testimonial
“Larsen is a guy who knows how to roll up his sleeves. He and Harpoon have proven to be one of the most impactful investors on our cap table, going above and beyond on multiple occasions. Among other things, they introduced us to government customers and helped lay the groundwork for what would become our government business. It was a huge value add.”
John Gedmark
CEO, Astranis
Testimonial
“Lots of VCs will tell you, 'We have an inside line to the government.' But for companies like Merlin, whose approach provides near-term value to the DoD as well as long-term applicability, we truly benefit from those claims being truthful and actionable. At every turn Harpoon actually backs up what they say with intros that move our work and company forward.”
Matthew George
Founder and CEO, Merlin Labs
Testimonial
“Harpoon has been instrumental in Kodiak’s journey, from supporting us on our first SBIR contract to advising us on our $50 million project with the U.S. Army. During that time, I’ve had the pleasure of getting to know the Harpoon team, and can say with confidence that their commitment and depth of expertise are unmatched.”
Don Burnette
CEO, Kodiak
Testimonial
"Harpoon has been an incredible partner from our earliest days! Their infectious energy and unwavering founder-first mentality truly set them apart. More than just providing funding, they've been instrumental in opening doors and facilitating key connections within the defense sector. Their support goes beyond capital, offering invaluable strategic insights, and introductions. We’re deeply grateful for their belief in our vision and the ongoing guidance they continue to provide."
Eric McShane
Co-Founder / CEO, Electroflow
Testimonial
"Harpoon Ventures has been a game-changing partner for Firestorm Labs. Their deep connectivity across the defense ecosystem, ranging from special operations to the broader branches, has opened doors and expanded our connections to another level. Whether it’s early customer insight, strategic intros, or helping us navigate government pathways, they’re always in the trenches with us."
Dan Magy
Co-Founder / CEO, Firestorm Labs
Testimonial
"Vector wouldn’t exist without Harpoon. They understood the urgent need for a new breed of defense company—one built for speed, scale, and mission-first execution. From assembling our founding team to securing critical capital, Harpoon has been a true partner in building what the future of defense demands."