# Larsen Jensen

> Larsen Jensen is a Series A investor at Harpoon (Menlo Park) backing Drones and Security. See 5 investments, check sizes, portfolio. Updated Aug 2026.

- Type: Angel Investor
- Fund: [Harpoon](https://shizune.co/investors/profile/harpoon-2271)
- Location: Menlo Park, United States
- Total investments: 5
- Last investment: Jul 2025
- Lead investor: 40%
- Last updated: Aug 2026
- LinkedIn: https://www.linkedin.com/in/larsen-jensen-38232979/
- X (Twitter): https://twitter.com/larsen_jensen

Larsen Jensen is a Series A investor at Harpoon in Menlo Park focused on Drones and Security. Larsen Jensen is the Founder and General Partner of Harpoon Ventures. He attended Stanford University Graduate School of Business.

## Investment focus

### Industry

| Industry | Investments | Share |
| --- | --- | --- |
| Drones | 2 | 40% |
| Security | 2 | 40% |
| Machine Learning | 2 | 40% |
| Artificial Intelligence | 2 | 40% |
| SaaS | 1 | 20% |

22 industries tracked in total.

### Stage

| Stage | Investments | Share |
| --- | --- | --- |
| Series A | 3 | 60% |
| Series C | 1 | 20% |
| Venture - Series Unknown | 1 | 20% |

## Investments

| Company | Description | Amount | Stage | Date | Website |
| --- | --- | --- | --- | --- | --- |
| Firestorm | Firestorm is a defense technology company that develops modular, mission-adaptable unmanned aerial systems (UAS) designed for military applications. Its platform focuses on open-system architectures that allow operators to reconfigure hardware, software, propulsion, and payloads based on mission requirements. Firestorm also builds distributedmanufacturing solutions such as containerized production units that enable on-site or remote fabrication of drones and components using additive manufacturing and automated workflows. The company offers multiple aerial systems, including larger modular drones, tube-launched systems, and lightweight hand-launched units, each designed for different operational roles such as surveillance, electronic warfare, or strike missions. In addition, it develops supporting technologies like onboard computing systems and software tools that enable autonomous operation, sensor integration, and third-party interoperability. Firestorm also provides simulation and mission-planning capabilities that allow users to test scenarios, train operators, and evaluate payload performance in virtual environments. | $35M | Series A | Jul 16, 2025 |  |
| WireScreen | WireScreen is the leading China business intelligence platform, delivering unparalleled global business intelligence to corporations and government agencies— furnishing them with detailed, accurate and actionable data on millions of companies and the people who run them. | $14M | Series A | Nov 10, 2022 |  |
| CyCognito | CyCognito is a revolutionary new approach to external cyber risk management driven to create positive business impact. Far deeper than external attack surface management, our platform helps organizations identify, understand and master their risk in profound new ways. Fully-automated, highly scalable, and designed to function as promised, ourplatform uses advanced machine learning and natural language processing to allow for unprecedented reach, speed and accuracy. We can step into the shoes of potential attackers—which in turn helps us identify and secure gaps better than anyone. We help teams secure their attack surface by helping them determine true risks, where they need to focus and how they should invest. And then we use what we learn to help bridge cyber risk remediation across departments unlike ever before. | $100M | Series C | Dec 01, 2021 |  |
| LeapYear Technologies | LeapYear develops technology for enterprises to securely unlock value from their most sensitive data assets. LeapYear’s platform implements differential privacy, a mathematically proven standard that enables data to be leveraged for machine learning, while ensuring that no data can be exposed or exploited.LeapYear has partnered with the largestcompanies across financial services, healthcare, technology, and insurance to combine, analyze, and monetize previously restricted and siloed sources of information. | $15M | Venture - Series Unknown | Sep 30, 2021 |  |
| Citadel Defense Company | Citadel develops an automated and modular drone defense solution that uses proprietary machine learning algorithms to detect and engage unwanted drones.Citadel's team is made up of experts from the commercial and military drone industries with decades of experience in delivering exceptional solutions. Current customers include the UnitedStates Department of Defense, Defense Innovation Unit-Experimental (DIUX), Special Operations Communities, Army, Navy, Air Force, Department of Homeland Security, Coast Guard, Customs and Border Patrol, and classified Defense customers. | $12M | Series A | Aug 08, 2017 |  |

5 of 5 investments shown.

## Co-investors
- [Lightspeed Venture Partners](https://shizune.co/investors/profile/lightspeed-venture-partners) — VC Fund, 3 deals together
- [Bain Capital Ventures](https://shizune.co/investors/profile/bain-capital-ventures) — VC Fund, 2 deals together
- [Sequoia Capital](https://shizune.co/investors/profile/sequoia-capital) — VC Fund, 2 deals together
- [UpWest](https://shizune.co/investors/profile/upwest-labs) — VC Fund, 2 deals together
- [Accel](https://shizune.co/investors/profile/accel) — VC Fund, 1 deal together
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund, 1 deal together

## About Harpoon

VC Fund · Menlo Park, United States

Harpoon is an early-stage venture capital. It was formed in 2018 and is headquartered in San Diego, California.

4 contacts available at Harpoon.

| Name | Title | Profile |
| --- | --- | --- |
| Austin Hays | Partner | https://shizune.co/investors/profile/austin-hays |
| Chris O'Connor | Partner | https://shizune.co/investors/profile/chris-o-connor-1224 |
| Chris O'Connor | Partner | https://shizune.co/investors/profile/chris-o-connor-e0fa |
| Larsen Jensen | Founder and General Partner | https://shizune.co/investors/profile/larsen-jensen |

## Similar investors

### Similar stage
- [Antler](https://shizune.co/investors/profile/antler-be9c) — VC Fund
- [Alumni Ventures](https://shizune.co/investors/profile/alumni-ventures-group) — VC Fund
- [General Catalyst](https://shizune.co/investors/profile/general-catalyst-partners) — VC Fund

## FAQ

### What does Larsen Jensen invest in?

Larsen Jensen invests primarily in Drones, Security and Machine Learning startups, most often at Series A and Series C stage. Most of the 5 investments tracked by Shizune back companies in United States. The Investment Focus section breaks down every industry, stage and country in the portfolio.

### When did Larsen Jensen last invest?

The most recent investment recorded for Larsen Jensen closed in Jul 2025. Shizune tracks 5 investments in total for this profile, including round sizes, stages and portfolio companies, all sourced from confirmed public funding rounds and refreshed monthly.

### Is Shizune's investor data accurate?

Yes — every stat on this profile is calculated from confirmed public funding rounds monitored across hundreds of sources since 2020. This profile was last refreshed in Aug 2026 and is updated monthly. Spotted something off? Use the “Suggest an edit” link near the top of the page.

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