25madison
Investing activity
25madison appears in 3 AI deals tracked by the Lounge deals desk. The rounds are mostly Seed, with a median round size of $6M and the largest at $8M. The most recent are Century Health (Seed, $5M, May 2026), Ranger AI (Seed, $8.4M, May 2026) and Miravoice (Seed, $6.3M, Apr 2026).
25madison most often invests alongside Origin Ventures, Next Play Ventures, 2048 Ventures and InnovateHealth Ventures, and the companies it backs on Lounge are mostly in AI.
Deals
Frequently asked questions about 25madison
What AI companies has 25madison invested in?
25madison's AI investments include Century Health, Ranger AI and Miravoice. The 3 rounds on Lounge are listed on this page with amounts, dates and co-investors.
What stage does 25madison invest at?
In the rounds tracked on Lounge, 25madison has invested at Seed, with a median round of $6M.
Who does 25madison co-invest with?
25madison's most frequent co-investors on Lounge are Origin Ventures (1 deal), Next Play Ventures (1 deal), 2048 Ventures (1 deal), InnovateHealth Ventures (1 deal) and Zorba Lieberman (1 deal).
How can founders reach 25madison?
Founders on Lounge can see 25madison'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 25madison to their Investor Pipeline to track the conversation.