Pioneer Square Labs
Pioneer Square Labs appears in 1 AI deal tracked on Lounge in 2026.
Investing activity
Pioneer Square Labs appears in 2 AI deals tracked by the Lounge deals desk, rounds totalling $15M. The rounds are mostly Seed, with a median round size of $15M. The most recent are SageOx (Seed, $15M, May 2026) and Certivo (Seed, $4M, Feb 2026).
Pioneer Square Labs most often invests alongside Canaan Partners, Founders' Co-op, A Capital and A.Capital Ventures, and the companies it backs on Lounge are mostly in AI.
Deals
Frequently asked questions about Pioneer Square Labs
What AI companies has Pioneer Square Labs invested in?
Pioneer Square Labs's AI investments include SageOx and Certivo. The 2 rounds on Lounge are listed on this page with amounts, dates and co-investors.
What stage does Pioneer Square Labs invest at?
In the rounds tracked on Lounge, Pioneer Square Labs has invested at Seed, with a median round of $15M.
Who does Pioneer Square Labs co-invest with?
Pioneer Square Labs's most frequent co-investors on Lounge are Canaan Partners (1 deal), Founders' Co-op (1 deal), A Capital (1 deal), A.Capital Ventures (1 deal) and Suffolk Technologies (1 deal).
How can founders reach Pioneer Square Labs?
Founders on Lounge can see Pioneer Square Labs'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 Pioneer Square Labs to their Investor Pipeline to track the conversation.