Sienna Venture Capital
Sienna Venture Capital is a prominent European venture capital firm established in 2022, operating as the venture capital arm of Sienna Investment Managers. Based in Paris, France, with a presence in Strassen, Luxembourg, the firm has quickly become a leading investor in Israeli and American technology sectors. Under the leadership of Isabelle Amiel-Azoulai, Sienna has made over 50 investments in Israeli companies, positioning itself as the largest European investor in Israeli tech. The firm focuses on early-growth and growth-stage technology companies, typically investing between $5 to $10 m
Investing activity
Sienna Venture Capital appears in 1 AI deal tracked by the AI Lounge deals desk, rounds totalling $25M, and led 1 of them. The rounds are mostly Series A, with a median round size of $25M. The most recent is Rein Security (Series A, $25M, Oct 2026).
Sienna Venture Capital most often invests alongside Glilot Capital, RNP Capital Advisors, Corner Ventures and Atlacle, and the companies it backs on AI Lounge are mostly in AI agent security.
Deals
Frequently asked questions about Sienna Venture Capital
What AI companies has Sienna Venture Capital invested in?
Sienna Venture Capital's AI investments include Rein Security. The 1 round on AI Lounge are listed on this page with amounts, dates and co-investors.
Where is Sienna Venture Capital based?
Sienna Venture Capital is based in Paris, Ile-de-France, France.
What stage does Sienna Venture Capital invest at?
In the rounds tracked on AI Lounge, Sienna Venture Capital has invested at Series A, with a median round of $25M. Sienna Venture Capital led 1 of those rounds.
Who does Sienna Venture Capital co-invest with?
Sienna Venture Capital's most frequent co-investors on AI Lounge are Glilot Capital (1 deal), RNP Capital Advisors (1 deal), Corner Ventures (1 deal) and Atlacle (1 deal).
How can founders reach Sienna Venture Capital?
Founders on AI Lounge can see Sienna Venture 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 Sienna Venture Capital to their Investor Pipeline to track the conversation.