Bullpen Capital
Bullpen Capital is a venture capital fund based in San Francisco, founded in 2010 by Paul Martino, Eric Wiesen, and Richard Melmon. The firm specializes in post-seed financing for early-stage companies that have achieved product-market fit but may be overlooked by traditional venture capital firms. Bullpen Capital invests across various sectors, including enterprise software, consumer products, health tech, e-commerce, fintech, gaming, and data center equipment. With a total of $145 million in managed funds, Bullpen Capital has funded over 100 companies and executed 181 investments, with an a
Investing activity
Bullpen Capital appears in 1 AI deal tracked by the AI Lounge deals desk. The rounds are mostly Seed, with a median round size of $7M. The most recent is SpeedLabs (Seed, $6.5M, Jun 2026).
Bullpen Capital most often invests alongside Parlay Capital Holdings, TA Ventures and EdgeEquity, and the companies it backs on AI Lounge are mostly in AI.
Deals
Frequently asked questions about Bullpen Capital
What AI companies has Bullpen Capital invested in?
Bullpen Capital's AI investments include SpeedLabs. The 1 round on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is Bullpen Capital based?
Bullpen Capital is based in San Francisco, California, United States.
What stage does Bullpen Capital invest at?
In the rounds tracked on AI Lounge, Bullpen Capital has invested at Seed, with a median round of $7M.
Who does Bullpen Capital co-invest with?
Bullpen Capital's most frequent co-investors on AI Lounge are Parlay Capital Holdings (1 deal), TA Ventures (1 deal) and EdgeEquity (1 deal).
How can founders reach Bullpen Capital?
Founders on AI Lounge can see Bullpen Capital'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 Bullpen Capital to their Investor Pipeline to track the conversation.