Sienna Ventures is an early-stage technology investor based in California with offices in San Rafael and New York City. The firm focuses on companies in software, medical technology, wireless communications, Internet infrastructure, cloud computing, e-commerce, and networking. Sienna typically invests between $5-25 million in startup funding.
Notable portfolio companies include Atomic Tangerine and Newport Opticom. Sienna Ventures, founded in 1990, targets companies where technology applications create sustainable advantages. The firm's investment strategy emphasizes identifying innovative startups with strong potential for growth in their target sectors.
Sienna Ventures - Portfolio Snapshot
Portfolio activity breakdown across disclosed investments and stages
Portfolio Companies2
Current Portfolio Count1
Total Portfolio Exits1
Top Investment Stages
Series A1 (50.0%)
Series C1 (50.0%)
Stage Mix
Series A 50%Series C 50%
Concentration shown as share of disclosed investments by stage.
Sienna Ventures: A California-based, early-stage tech investor focusing on software, med-tech, and cloud computing, providing $5-25M in start-up funding.
