Harpoon

ActiveVenture Capital

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Updated: Jan 22, 2026 ·

Financial History

Total Raised

N/A

Valuation

N/A

Investments Made

Date	Company	Round	Lead Investor(s)	Co-Investor(s)
Sep 1, 2025	Flox	$25.0M Series B	—	Addition, Afore Capital, Alumni Ventures, Craft Ventures, McCarthy Capital, MizMaa Ventures, Aaron Jacobson, New Enterprise Associates, Dan Magnuszewski, Guy Podjarny, Thomas Dohmke
Aug 1, 2025	Dirac	$11.0M Seed	—	Kevin Hartz, Afore Capital, Altair Capital Management, Alumni Ventures, Angel investor, AngelList, Anti fund, Brainchild, Craft Ventures, Founders Fund, Heavybit, Infinite Niches, KAAN Ventures, LAUNCH, McCarthy Capital, Aaron Jacobson, Paradigm, Positive Sum VC, Proton Enterprises, Shrug Capital, The Hit Forge, Todd and Rahul's Angel Fund, Trust Fund, Vibe Capital, Alex Rodriguez, Y Combinator, Anthony Pompliano, Babak Nivi, Karim Atiyeh, Kevin Hart, Kyle Vogt, Marcy Simon, Matthew Dellavedova, Moshe Lifschitz, Sahil Lavingia, Sahin Boydas, Scott Belsky
Jul 1, 2025	Firestorm	$35.0M Series A	—	Afore Capital, Alumni Ventures, Craft Ventures, DN Capital, Floodgate, Giant Ventures, IDG Ventures, LAUNCH, McCarthy Capital, Aaron Jacobson, New Enterprise Associates, Alexander Rosen, Scout Ventures, SignalFire, Slow Ventures, Y Combinator, Drew Houston, Emmett Shear, Kyle Vogt
Jul 1, 2025	Replit	$250.0M Series C	—	Afore Capital, Alumni Ventures, Amino Capital, Andreessen Horowitz, Bond, Bora&Sons, BoxOne Ventures, Craft Ventures, Founders Fund, Gaingels, Great Oaks Venture Capital, Hitachi Ventures, McCarthy Capital, Aaron Jacobson, Polychain Capital, Softbank Group, Streamlined Ventures, SV Angel, Mike Kerns, The Hit Forge, Trajectory Ventures, UpHonest Capital, VU Venture Partners, Walden Catalyst Ventures, Y Combinator, Audrey Gelman, Conor Bronsdon, Emmett Shear, Hari Lakshmanan, Jeff Bezos, Joshua Webster, Kenji Niwa, Madhu Chamarty, Mark Pincus, Mattia Astori, Matt Mazzeo, Paul Graham, Richard Branson, Sam Altman, Sathvik Bilakanti, Sue Xu, Vinay Hiremath
Jun 1, 2025	Deeto	$13.0M Series A	—	Accel, Lightspeed Venture Partners, Scheinman Angel Fund, Sorenson Ventures, SV Angel, Thomvest Ventures, UpWest
Apr 1, 2025	TrialKit	$4.0M Seed	—	Accel, Lightspeed Venture Partners, Scheinman Angel Fund, Sorenson Ventures, SV Angel, Thomvest Ventures, UpWest
Apr 1, 2025	Barnwell Bio	$6.0M Seed	—	Afore Capital, Alumni Ventures, Craft Ventures, McCarthy Capital, Aaron Jacobson
Mar 1, 2024	Foundry	$80.0M Series A	—	Lightspeed Venture Partners, Promus Ventures, Sequoia Capital, Christian Reber, Michael Moritz, Torsten Reil
Jan 1, 2024	Watershed	$100.0M Series C	—	Alchemy Ventures, Andreessen Horowitz, Breakthrough Energy Ventures, Energy Impact Partners, Founder Collective, Goat Capital, Greenoaks Capital, Haun Ventures, Infinity Ventures Crypto, Kleiner Perkins, Microsoft, Polychain Capital, Sequoia Capital, The Hit Forge, Balaji Srinivasan, Immad Akhund, Vivek Patel
Nov 1, 2023	Replit	$20.0M Series B	—	Afore Capital, Alumni Ventures, Craft Ventures, McCarthy Capital, Aaron Jacobson
Aug 1, 2023	Catch+Release	$9.0M Series A	—	Accel, Lightspeed Venture Partners, Scheinman Angel Fund, Sorenson Ventures, SV Angel, Thirty Five Ventures, Thomvest Ventures, TQ Ventures, UpWest, Kevin Hart, LeBron James, Odell Beckham Jr., Steve Stoute
May 1, 2023	Unity SCM	$8.0M Series A	—	Accel, Glilot Capital Partners, Lightspeed Venture Partners, Scheinman Angel Fund, Sorenson Ventures, SV Angel, Thomvest Ventures, UpWest, Yair Weinberger
Feb 1, 2023	Descope	$53.0M Seed	—	Accel, Acrew Capital, Blu Venture Investors, Boldstart Ventures, C2 Investment, Carya Venture Partners, Collide Capital, Cyberstarts VC, Evolution Equity Partners, Lightspeed Venture Partners, Oren Yunger, Notable Capital, Scheinman Angel Fund, Sierra Ventures, Sorenson Ventures, SV Angel, Thomvest Ventures, U&I Ventures, UpWest, YL Ventures, Akshay Kothari, Anshu Sharma, Assaf Rappaport, Ben Bernstein, George Kurtz, Oliver Friedrichs, Scott Belsky, Shamir Karkal, Shlomo Kramer
Feb 1, 2023	Flox	$17.0M Series A	—	Addition, Afore Capital, Alumni Ventures, Craft Ventures, IVP, Maven Ventures, McCarthy Capital, MizMaa Ventures, Aaron Jacobson, New Enterprise Associates, Sarona Ventures, Verve Ventures, Dan Magnuszewski, Guy Podjarny, Thomas Dohmke, Youcef Es-skouri
Sep 1, 2022	Isovalent	$40.0M Series B	—	Accel, Andreessen Horowitz, Carao Ventures, Cedar Capital Group, Lightspeed Venture Partners, Madrona Ventures, Mango Capital, PS Investments, Scheinman Angel Fund, Sorenson Ventures, SV Angel, Thomvest Ventures, UpWest, Anne Wojcicki
Jul 1, 2022	Dgraph Labs	$6.0M Seed	—	01 Advisors, Bain Capital Crypto, Bond, Conviction Partners, Data Point Capital, Greylock, IVP, LAUNCH, LGF, Plaid, Redpoint Ventures, Scribble Ventures, Spark Capital, Tribe Capital, Uncorrelated Ventures, Venrock, Ameet Patel, Charles Zedlewski, Cristina Cordova, DJ Patil, Dylan Field, Greg Brockman, John M. Mueller, Ron Pragides, Scott Belsky, Spencer Kimball, Vishal Rao
Jun 1, 2022	HYCU	$53.0M Series B	—	Acrew Capital, Atlassian Ventures, Bain Capital Crypto, Bain Capital Ventures, CRV, Intel Capital, Olima Ventures, Rain Capital, Redpoint Ventures, Sapphire Ventures, Scribble Ventures, SYN Ventures, Tribe Capital, Venrock, Ameet Patel, DJ Patil, Spencer Kimball
May 1, 2022	Deeto	$5.0M Seed	—	Accel, Lightspeed Venture Partners, Scheinman Angel Fund, Sorenson Ventures, SV Angel, Thomvest Ventures, UpWest
Apr 1, 2022	ReadySet Technology	$24.0M Series A	—	Accel, Bain Capital Crypto, C2 Investment, Dig Ventures, Index Ventures, iNovia Capital, LGF, Lobby Capital, Redpoint Ventures, Scribble Ventures, SignalFire, The Hit Forge, Tribe Capital, Venrock, Webb Investment Network, Ameet Patel, Christian Bach, DJ Patil, Dylan Field, Frederic Kerrest, Greg Brockman, Mathias Biilmann Christensen, Melissa Tan, Shay Banon, Uri Boness, Guillermo Rauch
Mar 1, 2022	Hashboard	$7.0M Seed	—	AIX Ventures, Andreessen Horowitz, Bain Capital Crypto, Better Capital, Bombas, Divergent Capital, DST Global, ENIAC Ventures, Flex Capital, Foundation Capital, Founders Fund, FTX Ventures, General Catalyst, Iporanga Ventures, LGF, Matrix, Mischief Venture Capital, monashees, On Deck, Pareto Holdings, Redpoint Ventures, Reshape Ventures, Scribble Ventures, Sequoia Capital, Slow Ventures, Techstars, The Hit Forge, Third Kind Ventures, Tribe Capital, Venrock, Y Combinator, Akshay Kothari, Ameet Patel, Arash Ferdowsi, Christian Oestlien, David Peterson, Derrick Li, Dylan Field, Girish Mathrubootham, Jeremy Stoppelman, Jeremy Yap, Kevin Weil, Kunal Shah, Leore Avidar, Nik Sharma, Nitay Joffe, Roger Ehrenberg, Roger Laughlin Carvallo, Sahil Lavingia, Sam Blond, Scott Belsky, Spencer Kimball, Stewart Butterfield, Tony Hawk, Varadh Jain
Mar 1, 2022	Theta Lake	$50.0M Series B	—	Accel, Battery Ventures, Cyberstarts VC, First Rays Venture Partners, Lightspeed Venture Partners, Neotribe Ventures, Scheinman Angel Fund, Sorenson Ventures, SV Angel, Thomvest Ventures, UpWest, WestWave Capital, Ariel Maislos, Michael Fey, Sriram Ramachandran
Feb 1, 2022	Decodable	$20.0M Series A	—	8090 Industries, Alt Capital, Alumni Ventures, Amplify Partners, Andreessen Horowitz, Archetype, Bain Capital Crypto, Cadenza Capital Management, Cantos Ventures, Craft Ventures, Delta Blockchain Fund, Fifty Years, Flex Capital, Floodgate, Formic Ventures, Founder Collective, Founders Fund, FPV Fund, Galaxy Digital, General Catalyst, Helium-3 Ventures, Industry Ventures, Jude Gomila Rolling Fund, LGF, Lux Capital, Next Level Ventures, Redpoint Ventures, Refactor Capital, Saga, Scribble Ventures, Sequoia Capital, William Guo, Tribe Capital, UpHonest Capital, Valar Ventures, Venrock, Winklevoss Capital, Work-Bench, Aaron Rankin (Sprout Social), Alain Hanover, Ameet Patel, Amjad Masad, Anthony Pompliano, Aston Motes, DJ Patil, Gokul Rajaram, Greg Brockman, Harry Hurst, Jaan Tallinn, Jeff Yoshimura, Jehan Chu, John Fontein, Leore Avidar, Matt Bellamy, Matthew Dellavedova, Nelson Chu, Sahin Boydas, Sam Altman, Samvit Ramadurgam, Spencer Kimball
Jan 1, 2022	Vectice	$13.0M Series A	—	Accel, Crosslink Capital, Engineering Capital, Felicis Ventures, Lightspeed Venture Partners, Pelion Venture Partners, Scheinman Angel Fund, Sorenson Ventures, SV Angel, Thomvest Ventures, UpWest, Zetta Venture Partners
Dec 1, 2021	Sysdig	$350.0M Series G	—	Accel, Afore Capital, Alpha Prime Fund, Altair Capital Management, Andreessen Horowitz, Atooro Fund, Bain Capital Ventures, Cherry Ventures, Citi Ventures, Commerce Ventures, Flint Capital, Hack VC, Heavybit, Horizon Capital, Hoxton Ventures, Insight Partners, Lightspeed Venture Partners, Matrix, Mouro Capital, Next47, Operator Stack, Reimann Investors, Sapphire Ventures, Scale Venture Partners, The Hit Forge, Third Point Ventures, Uncorrelated Ventures, Vertex Ventures, Viola Ventures, Work-Bench, Y Combinator, Amit Jhawar, Girish Mathrubootham, Sahin Boydas, Stefan Jeschonnek
Nov 1, 2021	CyCognito	$100.0M Series C	—	Accel, Amplify Partners, Andreessen Horowitz, Bain Capital Ventures, Battery Ventures, BITKRAFT Ventures, Elron Ventures, General Catalyst, Hoxton Ventures, Khosla Ventures, Lightspeed Venture Partners, March Capital, Menlo Ventures, Morado Venture Partners, Redpoint Ventures, Sapphire Ventures, Scheinman Angel Fund, Sequoia Capital, Sierra Ventures, Sorenson Ventures, SV Angel, Tenaya Capital, Thomvest Ventures, UpWest, Vertex Ventures, Wing Venture Capital, Allison Pickens (Allison Pickens Ventures), Edith Harbaugh, Eric Wu, Scott Belsky, Sudheesh Nair

Financial History

Total Raised

N/A

Valuation

N/A

Leadership Team

Key people at Harpoon.

Leadership Team

Key people at Harpoon.

Deep Dive

Harpoon Ventures is an early-stage venture capital firm founded in 2018 by Larsen Jensen, a two-time Olympic medalist and former Navy SEAL. The firm specializes in investing in dual-use technologies—commercial products with applications in both private and federal sectors—focusing on areas such as cybersecurity, developer tools, and software. With approximately $300–$380 million in assets under management and around 20 to 40 investments, Harpoon actively supports startups by providing strategic guidance, operational expertise, and facilitating connections to government customers, thereby significantly impacting the U.S. startup ecosystem, especially in defense-related tech[1][4][5][6].

Founded with the belief that technology will define geopolitics, Harpoon Ventures was established to back companies that build critical technologies for the U.S. government and commercial markets. Larsen Jensen’s unique background as an Olympic athlete and Navy SEAL informs the firm’s disciplined, mission-driven approach. The firm has evolved to include an accelerator program called Black Flag, which supports defense tech startups with capital and hands-on mentorship, aiming to foster a network of influential companies driving innovation in aerospace, biology, defense, energy, and robotics[1][4][5].

Core Differentiators

Unique Investment Model: Focus on dual-use technologies that serve both commercial and federal government needs, providing startups with access to non-dilutive government funding and contracts.
Network Strength: Deep connections within the Department of Defense and federal agencies, enabling portfolio companies to secure government business and strategic partnerships.
Track Record: Successful investments in companies like Solugen, Astranis Space Technologies, and Robust Intelligence, with a reputation for identifying emerging tech trends early.
Operating Support: Active involvement beyond capital, including strategic guidance, operational expertise, and facilitating introductions to government customers and partners.
Accelerator Program: Black Flag accelerator offers tailored support and capital to critical tech startups, building a community of founders focused on defense innovation[1][4][5].

Role in the Broader Tech Landscape

Harpoon Ventures rides the trend of increasing convergence between commercial innovation and national security needs, especially as geopolitical tensions elevate the importance of technology in defense. The timing is critical as the U.S. government seeks to accelerate adoption of cutting-edge technologies like AI, robotics, and aerospace innovations. Harpoon’s dual-use investment thesis positions it uniquely to influence both commercial markets and federal technology modernization efforts. By bridging startups with government resources and contracts, Harpoon helps shape the defense innovation ecosystem and fosters a new generation of tech companies with strategic national importance[1][4][5].

Quick Take & Future Outlook

Looking ahead, Harpoon Ventures is poised to expand its influence through continued growth of its Black Flag accelerator and deeper engagement with emerging defense technologies. Trends such as AI, autonomous systems, and biotech will likely shape its investment focus. The firm’s ability to connect startups with government funding and contracts will remain a key competitive advantage, potentially creating a powerful network or "Black Flag mafia" of companies driving the next wave of critical tech innovation. Harpoon’s mission-driven approach and operational support model suggest it will continue to be a pivotal player in the intersection of technology, defense, and geopolitics[4][5].

Sources

Core Differentiators

Unique Investment Model: Focus on dual-use technologies that serve both commercial and federal government needs, providing startups with access to non-dilutive government funding and contracts.
Network Strength: Deep connections within the Department of Defense and federal agencies, enabling portfolio companies to secure government business and strategic partnerships.
Track Record: Successful investments in companies like Solugen, Astranis Space Technologies, and Robust Intelligence, with a reputation for identifying emerging tech trends early.
Operating Support: Active involvement beyond capital, including strategic guidance, operational expertise, and facilitating introductions to government customers and partners.
Accelerator Program: Black Flag accelerator offers tailored support and capital to critical tech startups, building a community of founders focused on defense innovation[1][4][5].