Tanis Venture Management
Early-stage venture firm investing in defense and biotech/medtech companies with access to non-dilutive R&D funding; led Dive Technologies' 2020 round (acquired by Anduril, 2022) and participated in Seasats' $20M Series A (Feb 2026).
Tanis Venture Management, LLC is a New York City-based early-stage venture capital firm co-founded by Jack Seaver, Alex Seaver, and Brad Kent. The firm focuses on early-stage companies with access to non-dilutive R&D funding, working closely with scientists and founders to commercialize advanced technology in the biotech and defense sectors.
Overview
- Firm
- Tanis Venture Management
- Headquarters
- New York, NY
- Founded
- 2019
- AUM
- Stages
- Seed, Series A
- Thesis
- Early-stage investor in biotech/medtech and defense-tech companies, with emphasis on ventures with access to non-dilutive R&D funding (e.g. SBIR/government grants); works closely with scientist-founders to commercialize deep-tech into commercial and defense markets.
Portfolio companies1
Partners3
- FounderJack SeaverManaging Partner and co-founder of Tanis Venture Management, a New York City early-stage VC firm investing in biotech and defense-tech companies; led the firm's investment in Dive Technologies (acquired by Anduril, 2022) and sat on its board.
- FounderAlex SeaverCo-founder and General Partner of Tanis Venture Management, alongside Jack Seaver and Brad Kent; also founder of hedge fund Stadium Capital Management (1999) and a former Partner at InterWest Venture Management. Not confirmed as related to Jack Seaver despite sharing a surname.
- FounderBrad KentCo-founder of Tanis Venture Management, alongside Jack Seaver and Alex Seaver; also founder/manager of Stadium Capital Management (1999, alongside Alex Seaver) with earlier career stops at William Wilson & Associates and InterWest Venture Management Co.
Frequently asked
- What is Tanis Venture Management?
- Early-stage investor in biotech/medtech and defense-tech companies, with emphasis on ventures with access to non-dilutive R&D funding (e.g. SBIR/government grants); works closely with scientist-founders to commercialize deep-tech into commercial and defense markets.
- What stages does Tanis Venture Management invest at?
- Tanis Venture Management invests at Seed, Series A.
Sources & citations6
Each claim links to its underlying source. Confidence reflects how directly the source supports the claim.
- 1
Seasats closed a $20M Series A led by Konvoy Ventures, with participation from Shield Capital, DNS Capital, Techstars, Tanis Venture Management, Crumpton Ventures, Dorado Group, and other strategic investors
PR Newswire: Seasats Raises $20 Million Series A to Scale Production of Small Uncrewed Surface VehiclesVerified2026-02-17 - 2
Seasats closes $20 million Series A to expand autonomous vessel production — investor corroboration
WorkBoat: Seasats closes $20 million Series A to expand autonomous vessel productionVerified2026-02-01 - 3
Tanis Venture Management, LLC operates as a venture capital firm headquartered in New York City. The firm was co-founded by Jack Seaver, Alex Seaver, and Brad Kent. Tanis focuses on early-stage companies with access to non-dilutive R&D funding, collaborating closely with scientists and founders to bring advanced technology to market in the biotech and defense sectors. Tanis led Dive Technologies' 2020 fundraising round and held an outside board seat via Jack Seaver.
Caribbean News Global (Businesswire mirror): Tanis Venture Management, Mill Town Capital, and VTC Ventures Announce Acquisition of Dive Technologies by Anduril IndustriesVerified2022-02-04 - 4
AUM, check size, and founding year explicitly marked undisclosed/unknown/not specified by Preqin's own data
Preqin: Tanis Venture Management — fund manager profileVerified2026-08-09 - 5
Portfolio companies: Corner Therapeutics, CND Life Sciences, Bounce Imaging, Dive Technologies, Seasats
CB Insights: Tanis Venture Management — investor profileVerified2026-08-09 - 6
Delaware LLC formed 2019-09-09, foreign-qualified to do business in New York 2020-01-13 (NY DOS #5688033), registered address 777 Avenue of the Americas, Apt. 15B, New York, NY 10001
OpenCorporates (NY DOS registry mirror): Tanis Venture Management, LLC — company recordVerified2026-08-09