Proximity Ventures
Proximity Ventures is a venture capital firm based in New York, focused on early- and growth-stage investments across the United States and Southeast Asia. Co-founded by Neil Sirni, Jason Mack, Santi White, and Olivia Wilde, the firm emphasizes a hands-on, founder-first approach, fostering long-term relationships with operators. Proximity Ventures operates two capital vehicles: an early-stage fund that invests approximately $500,000 to $2 million in about eight companies each year, and a growth-stage fund targeting around $100 million, with investments of $10 million to $25 million in four co
Investing activity
Proximity Ventures appears in 1 AI deal tracked by the AI Lounge deals desk, rounds totalling $25M. The rounds are mostly Seed, with a median round size of $25M. The most recent is The Biological Computing (Seed, $25M, Mar 2026).
Proximity Ventures most often invests alongside Primary Venture Partners, Builders VC, Thomas Dohmke and E1 Ventures, and the companies it backs on AI Lounge are mostly in AI.
Deals
Frequently asked questions about Proximity Ventures
What AI companies has Proximity Ventures invested in?
Proximity Ventures's AI investments include The Biological Computing. The 1 round on AI Lounge are listed on this page with amounts, dates and co-investors.
What stage does Proximity Ventures invest at?
In the rounds tracked on AI Lounge, Proximity Ventures has invested at Seed, with a median round of $25M.
Who does Proximity Ventures co-invest with?
Proximity Ventures's most frequent co-investors on AI Lounge are Primary Venture Partners (1 deal), Builders VC (1 deal), Thomas Dohmke (1 deal), E1 Ventures (1 deal) and John Donovan (1 deal).
How can founders reach Proximity Ventures?
Founders on AI Lounge can see Proximity Ventures'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 Proximity Ventures to their Investor Pipeline to track the conversation.