San Diego · Pre-Seed–Series B · 12 people tracked
Also known as HARPOON MANAGEMENT, LLC
Investment thesis
Harpoon backs bold founders working to advance American innovation and national strategic advantage. It invests in AI, deep tech, software infrastructure, and cybersecurity, viewing these areas as essential to restoring U.S. technological leadership. The firm emphasizes hands-on support beyond capital, particularly helping portfolio companies win U.S. government and defense contracts—from non-dilutive grants to programs of record exceeding $100M. Founded on the belief that technology will define geopolitics, Harpoon positions itself as a tactical advantage for founders, leveraging deep connectivity across the defense ecosystem, including special operations and military branches, to open doors and facilitate government customer relationships.
Source: firm website, verified Aug 3, 2026.
Team · 12 people
from the firm's website & public directories
What they invest in
from 29 of 63 portfolio companiesAI & Machine Learning ×10Deep Tech ×8Advanced Manufacturing ×7Data & Infrastructure ×7Hardware ×7Defense Tech ×6Enterprise Software ×6Space Tech ×6
HQs:United States×20United Kingdom×2France×1
Who they back
founder profiles across 20 portfolio companiesFounding team size:solo founder×82 founders×63 founders×54+ founders×1
Where their founders studiedfrom 17 founders with education data
Harvard Business School ×2Massachusetts Institute of Technology ×2University of California, Berkeley ×2
Where their founders worked beforefrom 19 founders with career history
Carnegie Mellon University ×3Dropbox ×3MIT ×2Stanford University ×2
Accelerator rootsportfolio companies that came through a program
8 founders hold a PhD · 1 hold an MBA (of 20 with degree data)
Investments · 63 tracked
founders shown can be your intro pathBy year:2026 · 52025 · 32024 · 12021 · 110 dated
Alta Ares builds an AI stack for autonomous air defense and ISTAR, including counter-drone interceptor effectors, an ISR product suite, and mission management software designed for contested, GNSS-denied environments.
AI & Machine LearningDefense TechRoboticsParis, FR
Co-investorsAir Street CapitalApeiron Venture CapitalCherry VenturesKima VenturesOTB VenturesExpansion Venture Capital+3 more
Draper, US
Andrew Yakulis(Executive Officer, Director)
BoardLarson Jensen(Director)Ben Lambert(Director)George Matus(Director)
Board seatLarsen Jensen· per SEC Form D · $13M raise · filed Oct 2025
Aalo develops advanced nuclear reactor technology aimed at producing electricity at under 3 cents per kilowatt-hour.
Climate TechDeep TechEnergyHardware
Matt(Co-founder)inYasir(Co-founder)in
Co-investorsAlumni VenturesBasecamp FundBlack FlagBrave CapitalCrosscut VenturesDash VC+24 more
Astranis manufactures small, high-powered geosynchronous satellites equipped with advanced digital processing technology for global telecommunications and connectivity services.
Advanced ManufacturingDeep TechHardwareSpace TechSan Francisco, US
John Gedmark(Founder/CEO)inRyan McLinko(Founder/CTO)in
Co-investorsAndreessen HorowitzBlack FlagBoxGroupCantos VenturesCherubic VenturesCommonweal Ventures+37 more
CyCognito provides an external attack surface management (ASM) platform that continuously discovers, tests, and prioritizes exposures across an organization's internet-facing assets, subsidiaries, and third-party connections.
CybersecurityEnterprise SoftwareSaaS
Rob Gurzeev(Cofounder)Rob N. Gurzeev(Founder)in
Co-investorsAccelAmiti VenturesBright Pixel CapitalCyber Mentor FundGeodesic CapitalKli Capital+5 more
Decodable is a fully-managed, serverless real-time data platform built on Apache Flink and Debezium for ETL/ELT, reverse ETL, and stream processing.
AI & Machine LearningData & InfrastructureSaaSWalnut, US
Eric Sammer(Founder & CEO)
BoardEthan Batraski(Director)in
Co-investorsVenrockBain CapitalRackhouse Venture Management LpScribble VenturesBain Capital Ventures
Deep learning AI platform for computer vision, natural language processing, and data labeling.
Co-investorsGV (Google Ventures)SINEWAVE VENTURESStrawberry Creek Ventures
eFlow extracts lithium from dilute brines in North America using direct lithium extraction technology, serving the clean energy and electric vehicle supply chain.
CleantechEnergyNew MaterialsSan Bruno, US
Eric McShane(CEO and co-founder)Evan Gardner(CTO and co-founder)
Co-investorsBlack FlagFifty YearsUnion Square Ventures (USV)Voyager Partners
Encord provides a data platform for developing and deploying multimodal AI systems, serving AI development teams at scale across training and production environments.
AI & Machine LearningData & InfrastructureEnterprise SoftwareRoboticsLondon, GB
Ulrik Stig Hansen(Co-Founder & President)inEric Landau(Founder)in
Co-investorsBright Pixel CapitalCrane Venture PartnersCRV (Charles River Ventures)Next47Sonae IMY Combinator+2 more
Firestorm Labs builds xCell, a containerized 3D-printing factory that produces modular military drones at the point of need.
San Diego, US
Daniel Magy(Executive Officer, Director, Promoter)Chad McCoy(Founder)inIan Muceus(Founder)in
BoardTommy Hendrix(Director)Aaron Jacobson(Director)in
Co-investorsBeyond CapitalBlack FlagBooz Allen VenturesBVVCCapital FactoryDecisive Point+13 more
General Galactic is a space infrastructure company focused on building orbital and extraterrestrial infrastructure, drawing inspiration from science fiction concepts like propellant generation for off-Earth settlement.
Deep TechHardwareLogistics & Supply ChainSpace TechEl Segundo, US
Halen Mattison(Cofounder)inLuke Neise(Cofounder)in
Co-investorsAntiPathbreaker VenturesSeraphim SpaceUnruly CapitalRefactor Capital
Graphiant provides a software-based, unified network platform for connecting AI, cloud, SaaS, B2B, and branch environments.
Cloud ComputingData & InfrastructureEnterprise SoftwareSan Jose, US
Stefan Olofsson(Founder)
Co-investorsMVP VenturesTwo Bear CapitalIAG Capital PartnersSequoia CapitalWa'ed Ventures
Hanover Park is an AI-native fund administrator that combines automated services with software for investment firms, handling tasks such as bill processing, evidence collection, investment updates, LP responses, and KPI reconciliation.
AI & Machine LearningFintechSaaSNew York City, US
Chris Hladczuk(Founder)
Co-investorsBackwards CapitalSteel AtlasBanana CapitalSusa Ventures
JITX develops software to automate hardware and circuit board design for electronics companies.
Advanced ManufacturingAI & Machine LearningDeep TechDeveloper ToolsHardwareRoboticsSan Francisco, US
Duncan Haldane(Founder/CEO)inJonathan Bachrach(Founder/Creative Director)inPatrick Napa(Co-founder)
Co-investorsY CombinatorFundersClubSequoia Capital
Defense robotics company working on Army projects
Co-investorsDorm RoomNycaNyca Partners
Material Security provides cloud workspace security that prevents attacks and protects data across Microsoft 365 and Google Workspace for enterprise companies.
AI & Machine LearningCloud ComputingCybersecurityEnterprise SoftwareSaaSSan Francisco, US
RyaninAbhishekinChrisinAbhishek Agrawal(Founder)inChris Park(Founder)inRyan Noon(Founder)in
Co-investorsAndreessen HorowitzAbstract VenturesAmplify PartnersSouth Park CommonsFounders FundScript Capital
Defense technology company providing near-term value to the DoD
MoldCo is a healthcare technology platform that connects patients with mold-trained providers to diagnose and treat mold illness through virtual care, specialized protocols, and home testing available across the United States.
Digital HealthHealthtech
Co-investorsAngel Collective Opportunity FundCantos VenturesCollaborative FundMoth FundStarship VenturesSoGal Ventures
Monad is a high-performance EVM-compatible blockchain designed for fast, low-cost transactions.
Cloud ComputingCrypto & Web3Data & Infrastructure
Co-investorsAlphaLab CapitalAmbush CapitalArchetypeBankless VenturesBig Brain HoldingsBloccelerate VC+23 more
n8n is a visual and code-based workflow automation platform that enables technical teams to build, connect, and deploy AI agents and integrations with flexible deployment options ranging from on-premise to cloud infrastructure.
AI & Machine LearningDeveloper ToolsEnterprise Software
Jan Oberhauser(Founder & CEO)in
Co-investorsAccelFelicis Venturesfirstminute capitalHighland EuropeHoltzbrinck VenturesHV Capital+5 more
Vectra AI provides real-time network observability and threat detection across hybrid environments spanning on-premises, multi-cloud, SaaS, edge, and IoT/OT systems.
Cloud ComputingCybersecurityData & InfrastructureIoT
Co-investorsAndreessen HorowitzBessemer Venture PartnersSyn Ventures Seed Management LlcWingMango CapitalSYN Ventures
Faction is a venture capital firm that invests in cryptocurrency and blockchain projects at the seed and series A stages, focusing on entrepreneurs building fundamental utility across the technology stack.
BiotechCrypto & Web3New York, US
Oren Harnevo(Executive Officer, Director)Ronald Bianchini, Jr.(Executive Officer, Director)Roneil Rumburg(Cofounder)Ohad Finkelstein(Director)Christina Calvaneso(Executive Officer)Brian Pozesky(Executive Officer)
Co-investorsAccelAdaverseAlephAxeleo CapitalBluebird VenturesBright Pixel Capital+36 more
Orbital Ops develops propulsion systems and related aerospace hardware for airborne vehicles.
Advanced ManufacturingDeep TechDefense TechHardwareSpace TechLos Angeles, US
Ben Schleuniger(Founder)inRoss Doherty(Co-Founder & COO)inHunter
Co-investorsBlack FlagGoAhead VenturesOlive Tree CapitalTRAC (Third Round Analytics Capital)Y CombinatorInitialized Capital+2 more
Recursive develops self-improving superintelligence systems designed to automate knowledge discovery.
AI & Machine LearningDeep TechLondon, GB
Caiming Xiong(Founder)inYuandong Tian(Founder)inTim Rocktäschel(Founder)
Co-investorsAIX VenturesDCVC (Data Collective)Glasswing VenturesGreycroftInception FundRapid Scale+5 more
The compliance firewall for AI.
Kojin Oshiba(Cofounder)in
Co-investorsAlumni VenturesBasecamp FundCisco InvestmentsConvergeEngineering CapitalIn-Q-Tel
Code scanning platform for finding security vulnerabilities.
Co-investorsBright Pixel CapitalFelicis VenturesLightspeed Venture PartnersRedpoint VenturesSequoia CapitalSINEWAVE VENTURES
Singularity manufactures counter-weapon systems and air defense equipment designed to protect military personnel and civilians.
Advanced ManufacturingDefense TechHardwareSpace TechLos Angeles, US
Jack Oswald(Founder)in
Co-investorsFelicis VenturesMenlo VenturesNew Enterprise Associates (NEA)Y CombinatorDecisive PointKhosla Ventures+1 more
Solugen develops a biomanufacturing platform using fermentation and bioprocessing technology to produce specialty chemicals at scale.
Advanced ManufacturingBiotechCleantechClimate TechHealthtechHouston, US
Sean Hunt(Founder/CTO)inGaurab Chakrabarti(Founder)in
BoardSeth Bannon(Director)in
Co-investorsFifty YearsFounders FundLowercarbon CapitalY CombinatorBaillie GiffordGIC+22 more
Starcloud is a deep-tech company building large-scale data center infrastructure designed to operate in space.
Advanced ManufacturingAI & Machine LearningClimate TechCloud ComputingDeep TechSemiconductorsSpace TechRedmond, US
Philip Johnston(Founder/CEO)inEzra Feilden(Founder)inAdi Oltean(Founder)in
Co-investorsDnx VenturesFUSEGround Up VenturesImagination CapitalIntegra GroupeLink Ventures+22 more
Monad is a security data pipeline platform that normalizes, filters, enriches, and routes security telemetry from any source to optimize SIEM costs and reduce alert noise for security teams.
CybersecurityData & InfrastructureEnterprise SoftwareSaaSNew York City, US
Sunny Rekhi(Founder)inManny Gundampalli(Founder)in
Co-investorsY Combinator
AI Quality solutions that drive ML performance and trust
Redwood City, US
Anupam Datta(Co-Founder, President & Chief Scientist)inShayak Sen(Co-Founder & Chief Technology Officer)inWill Uppington(Co-Founder & Chief Executive Officer)in
BoardTim Tully(Board Member (Partner, Menlo Ventures; former CTO, Splunk))Jerry Chen(Investor / Board contact (Partner, Greylock Partners))
Co-investorsConversion CapitalData Community FundForgePoint CapitalGreylock PartnersMenlo VenturesWing
Truffle Security develops TruffleHog, an open-source secrets scanning tool that identifies and remediates exposed credentials such as encryption keys in cloud and SaaS environments before exploitation.
CybersecurityDeveloper Tools
Dylan Ayrey(Founder & CEO)in
Co-investorsAbstract VenturesAndreessen HorowitzExpaESSENCE VCEssence Venture CapitalIntel Capital+2 more
The Ocean Company builds dual-domain systems for coastal ecosystem restoration and maritime infrastructure security.
CleantechClimate TechDefense TechRobotics
Colm O'Brien(Founder)in
Co-investorsAndreessen HorowitzBooz Allen VenturesLowercarbon CapitalGenius VenturesPebblebedReGen Ventures+1 more
Ulysses builds dual-domain systems for maritime applications, including restoring coastal ecosystems and securing critical maritime infrastructure.
Climate TechDeep TechDefense TechRobotics
Co-investorsPebblebedAndreessen HorowitzBooz Allen VenturesGenius VenturesLowercarbon CapitalReGen Ventures+1 more
Ursa Major develops flight-proven aerospace and defense systems, including hypersonic engines, solid rocket motors, and space mobility solutions for military and defense applications.
Defense TechHardwareSpace TechBerthoud, US
Joe Laurienti(Founder)Dan Jablonsky(CEO)
Co-investorsAlpha EdisonAtento CapitalBalerion Space VenturesBrave CapitalEclipse VenturesIndustrious Ventures+6 more
Defense company built for speed, scale, and mission-first execution
WireScreen is a risk intelligence platform that maps corporate ownership structures, shell companies, and hidden affiliations by drawing on primary sources such as corporate filings, trade data, patents, and procurement records, with a specialized focus on Chinese corporate networks.
AI & Machine LearningData & InfrastructureGovTech
Co-investorsSamos InvestmentsSequoia Capital
Rows marked “SEC filing” are inferred from directors named on the company's SEC Form D — public regulatory data, not a portfolio list published by the firm.
Portfolio news
latest coverage across their companies
Starcloud · techcrunch.com · Aug 21, 2026
Monad · crypto-economy.com · Jul 17, 2026
n8n · prnewswire.com · Jul 17, 2026
Astranis · thenextweb.com · Jul 16, 2026
Singularity · techtimes.com · Jul 15, 2026
Ulysses · alleycorp.substack.com · Jul 15, 2026
Ursa Major · finance.yahoo.com · Jul 15, 2026
Frequently asked questions
- How many investments has Harpoon Ventures made?
- Harpoon Ventures has 53 tracked investments, 2 of which have exited via acquisition or IPO, including 2 dated in the last 24 months.
- What stage does Harpoon Ventures invest at?
- Harpoon Ventures invests at the Pre-Seed, Seed, Series A, Series B stages.
- What is Harpoon Ventures's typical check size?
- Harpoon Ventures typically writes checks of $100K – $5M.
- What sectors does Harpoon Ventures focus on?
- Harpoon Ventures focuses on AI & Machine Learning, Cybersecurity, Data & Infrastructure, Deep Tech, Defense Tech, Developer Tools, SaaS.
- Where is Harpoon Ventures located?
- Harpoon Ventures is headquartered in San Diego, US.
- Does Harpoon Ventures lead rounds?
- Yes, Harpoon Ventures leads investment rounds.
- Who does Harpoon Ventures co-invest with?
- Harpoon Ventures most often shares deals with Andreessen Horowitz, Sequoia Capital, Y Combinator, among 194 tracked co-investors.
From the blog
visit blog ↗Harpoon Ventures recently announced its $155 million Fund IV focused on critical technologies bridging commercial and government markets across compute, energy, aerospace, and biosecurity. The firm has invested in Astranis for low-cost satellite connectivity and General Galactic for carbon-neutral synthetic methane production, exemplifying its strategy of backing technologies addressing foundational infrastructure and national security challenges. AI summary
Media · Podcasts & interviews
featuring the teamThe Warrior Ethos & America's Mission, Interview with Harpoon Ventures Founder Larsen Jensen | Triggered Ep275
Larsen · rumble.com
Investing in the Freedom Stack with Larsen Jensen of Harpoon Ventures
Fresh Brewed Tech · Larsen
Making America Mission Ready, Interview with Harpoon Ventures founder Larsen Jensen | Ep246
Larsen · rumble.com
97. Larsen Jensen, Founder and General Partner, Harpoon Ventures
Second Front Systems · Larsen
Episode 5: Larsen Jensen, Founder at Harpoon Ventures
Dave Nolan · Larsen
Images
Co-investors · 16
Sequoia Capital is a venture capital firm that partners with founders to build technology companies.
Lightspeed is a global venture capital firm that has spent over two decades backing innovative companies as an early and first investor.
Accel is a venture capital firm that partners with exceptional teams, positioning itself as a first partner to founders globally.
New Enterprise Associates (NEA) is a venture capital firm that invests in and provides long-term support to founders building new companies.
Alumni Ventures (AV) is a venture capital firm that co-invests alongside lead VCs in startups, backing founders with capital and access to a large investor and operator community.
Venrock is a venture capital firm investing across technology and healthcare, backing companies in fintech, developer infrastructure, life sciences, therapeutics, semiconductors, and consumer products.
BCV Labs is the platform and hands-on support arm of Bain Capital Ventures, providing portfolio founders with go-to-market strategy, brand development, hiring assistance, and customer introductions.
Thomvest is a group of investment companies that invests on behalf of Peter J. Thomson and his family, backing teams across market cycles and supporting portfolio companies with mentorship, strategic guidance, and resources.
UpWest is an early-stage venture capital firm that funds and supports Israeli founders expanding into the US market.
Craft Ventures is a venture capital firm run by a team of former founders, operators, and investors who partner closely with founders to help build and scale technology companies.
Afore Capital is a $500M pre-seed venture fund that invests in pre-traction, early-stage companies, leveraging product and investment expertise to support founders from day zero.
▶4 more co-investors
Unusual VenturesGreatPoint VenturesSorenson VenturesBain Capital Crypto
Firms observed investing alongside Harpoon Ventures, from public investor directories. Shared companies are the overlap with Harpoon Ventures's recorded portfolio.
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