Tamarack Global
Tamarack Global is an early-stage venture capital firm based in Greenwich, Connecticut, founded in 2018. The firm focuses on investing in innovative deep-tech companies across various sectors, including electrification, space, autonomy, data intelligence, and digital assets. Tamarack Global operates as a network of experienced hedge fund managers, technologists, and entrepreneurs, emphasizing the intersection of hardware and software. The firm specializes in seed and early-stage investments, having made 37 reported investments as of early 2025. Tamarack Global's investment philosophy centers
Investing activity
Tamarack Global appears in 2 AI deals tracked by the Lounge deals desk, rounds totalling $35M, and led 2 of them. The rounds are mostly Seed, with a median round size of $18M. The most recent are Rilian (Seed, $17.5M, Apr 2026) and Rilian Technologies (Seed, $17.5M, Apr 2026).
Tamarack Global most often invests alongside First In, 8VC, Protego Ventures and Liquid 2 Ventures, and the companies it backs on Lounge are mostly in AI.
Deals
Frequently asked questions about Tamarack Global
What AI companies has Tamarack Global invested in?
Tamarack Global's AI investments include Rilian and Rilian Technologies. The 2 rounds on Lounge are listed on this page with amounts, dates and co-investors.
Where is Tamarack Global based?
Tamarack Global is based in Greenwich, Connecticut, United States.
What stage does Tamarack Global invest at?
In the rounds tracked on Lounge, Tamarack Global has invested at Seed, with a median round of $18M. Tamarack Global led 2 of those rounds.
Who does Tamarack Global co-invest with?
Tamarack Global's most frequent co-investors on Lounge are First In (2 deals), 8VC (2 deals), Protego Ventures (2 deals), Liquid 2 Ventures (2 deals) and Perot Jain (2 deals).
How can founders reach Tamarack Global?
Founders on Lounge can see Tamarack Global's contact details in AI Investor Contacts (paid plans), check for a warm introduction through members who worked with the firm under Warm Paths, and add Tamarack Global to their Investor Pipeline to track the conversation.