Marlinspike Partners
National security-focused venture capital firm based in Arlington, VA, founded in 2020; invested in Elroy Air's $40M Series A (2021, as Marlinspike Capital) and led its January 2025 funding round.
Marlinspike Partners (formerly Marlinspike Capital) is a venture capital firm founded in 2020 by Neil Keegan and Mislav Tolusic to invest in dual-use aerospace, AI, autonomy, robotics, and cybersecurity companies serving both U.S. government and commercial markets.
Overview
- Firm
- Marlinspike Partners
- Headquarters
- Arlington, VA
- Founded
- 2020
- AUM
- $127M (Fund II, final close, July 2026; target was $75M) + $11.8M (Fund I, 2022)
- Stages
- Thesis
- Targets companies with pioneering technologies addressing national security needs and possessing large commercial markets, across aerospace, AI/ML, autonomy & robotics, and cybersecurity.
Portfolio companies1
Partners0
No linked records yet.
Frequently asked
- What is Marlinspike Partners?
- Targets companies with pioneering technologies addressing national security needs and possessing large commercial markets, across aerospace, AI/ML, autonomy & robotics, and cybersecurity.
- How much does Marlinspike Partners manage?
- Marlinspike Partners manages $127M (Fund II, final close, July 2026; target was $75M) + $11.8M (Fund I, 2022) in assets, and was founded in 2020.
Sources & citations5
Each claim links to its underlying source. Confidence reflects how directly the source supports the claim.
- 1
Marlinspike Partners (marlinspike.us) targets dual-use aerospace, AI, autonomy, robotics, and cybersecurity companies, headquartered in Arlington, VA.
Marlinspike: Marlinspike – Rearm & RebuildVerified2026-08-08 - 2
Marlinspike Capital (CEO/CIO Neil Keegan) participated in Elroy Air's $40M Series A.
Elroy Air: Elroy Air's Series A FinancingVerified2021-08-03 - 3
Marlinspike Partners (Managing Partner Mislav Tolusic) led Elroy Air's January 2025 funding round.
Elroy Air: Elroy Air Brings on Dr. Andrew Clare as CEO and Secures Additional Funding to Scale BusinessVerified2025-01-14 - 4
Marlinspike, established in 2020, closed its oversubscribed $127 million Fund II (against a $75M target) in July 2026.
PR Newswire: Marlinspike Partners Closes Oversubscribed $127 Million Fund II to Rearm & Rebuild AmericaVerified2026-07-02 - 5
Marlinspike Disruptive Technology Fund I, LP raised $11.8 million.
SEC EDGAR (mirrored via secdatabase.com): Form D — Marlinspike Disruptive Technology Fund I, LPReported2022-01-01