Harpoon Ventures Fund III, L.P.
Follow-ons only
Follow-ons only: first sale Mar 2021, per Form D (fund age approximates vintage)
- Vintage
- 2021
- Fund size
- $122.03M (Form D)
- Stages
- Not stated
- Sectors
- AI infra, Cybersecurity
- Regions
- US
01 · Thesis
No thesis found on the firm's website yet.
02 · Initial check
$1.22M to $2.03M (estimated from fund size)
Estimated from Form D
03 · Who to approach
Named on this fund's Form D
- William Allen, General Partner; Manager of Sub Rosa I GP, LLC
- Larsen Jensen, Founder & General Partner
04 · Deals
No deals attributed to this fund yet.
05 · Evidence
Firm-wideHarpoon backs bold leaders shaping the next era of American innovation, investing across AI, deep tech, software infrastructure, and cybersecurity.
Our mission is to back bold leaders shaping the next era of American innovation
https://www.harpoon.vc/
06 · Sources
Last verified: Oct 28, 2026