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Harpoon Management, LLC

SEC exempt reporting adviser (venture capital exemption).

HQ
CA

Harpoon Management, LLC is a venture firm that backs bold leaders shaping the next era of American innovation. Its investment areas include AI, deep tech, software infrastructure, and cybersecurity. Larsen Jensen is listed as Founder and General Partner, and the team also includes investors, an operations associate, and venture fellows.

01 · Says / Does

TagSaysDoesHistorically (to 2020)
StagesNot statedNot enough dated dealsNone
SectorsAI infra, CybersecurityNot enough dated dealsNone
RegionsUSNot enough dated dealsCA

Says: what the firm's funds state. Does: from 0 dated deals in the last 24 months.

Historical focus (through 2020), derived from historical deal data.

YearDealsTop sectors
20192Aerospace and defense, Edtech, HR and future of work
20203Cybersecurity, AI applications, Biotech

02 · Fund history

FundYearSizeStatus
Sub Rosa Fund I, LP

Harpoon Ventures backs bold founders building across AI, deep tech, software infrastructure, and cybersecurity, aiming to shape the next era of American innovation. Inferred from the firm's website

approx. 2026$35M (Form D)Raising
Harpoon Ventures Fund IV, L.P.

Harpoon Ventures backs bold founders building across AI, deep tech, software infrastructure, and cybersecurity, aiming to shape the next era of American innovation. Inferred from the firm's website

approx. 2026$140M (Form D)Raising
Harpoon Ventures Fund IV, L.P.

Harpoon Ventures backs bold founders building across AI, deep tech, software infrastructure, and cybersecurity, aiming to shape the next era of American innovation. Inferred from the firm's website

2022$124.19M (Form D)Open, writing first checks
Harpoon Ventures Fund III, L.P.2021$122.03M (Form D)Follow-ons only

03 · People across funds

04 · Recent deals

No dated deals found yet.

05 · Latest from the firm

No news from the firm's website yet.

06 · Sources

  1. https://www.harpoon.vc/
  2. https://www.harpoon.vc/contact-us
  3. https://www.harpoon.vc/team/larsen-jensen

Fund dates and sizes are from SEC Form D filings.

Last verified: Oct 28, 2026