Thomvest Ventures
Thomvest is the venture investment arm of the Thomson family of Canada (Thomson Reuters). In 2026 it joined photonics AI-infrastructure company Lumilens' $700M round.
Investing activity
Thomvest Ventures appears in 1 AI deal tracked by the AI Lounge deals desk, rounds totalling $700M. The rounds are mostly Series A, with a median round size of $700M. The most recent is Lumilens (Series A, $700M, Aug 2026).
Thomvest Ventures most often invests alongside Seligman Ventures, Spark Capital, Bain Capital Ventures and Meritech Capital, and the companies it backs on AI Lounge are mostly in AI connectivity / photonics.
Deals
Frequently asked questions about Thomvest Ventures
What AI companies has Thomvest Ventures invested in?
Thomvest Ventures's AI investments include Lumilens. The 1 round on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is Thomvest Ventures based?
Thomvest Ventures is based in San Francisco, California, United States.
What stage does Thomvest Ventures invest at?
In the rounds tracked on AI Lounge, Thomvest Ventures has invested at Series A, with a median round of $700M.
Who does Thomvest Ventures co-invest with?
Thomvest Ventures's most frequent co-investors on AI Lounge are Seligman Ventures (1 deal), Spark Capital (1 deal), Bain Capital Ventures (1 deal), Meritech Capital (1 deal) and Atreides Management (1 deal).
How can founders reach Thomvest Ventures?
Founders on AI Lounge can see Thomvest 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 Thomvest Ventures to their Investor Pipeline to track the conversation.