STI Ventures, founded in 1997, is a venture capital firm based in Amsterdam that focuses on investing in early-stage startups. They have a strong track record of leading investments and typically invest between $10 million to $50 million in each deal. While they are based in Amsterdam, most of their investments are in the United States. Some of their notable portfolio companies include Prominence Networks, Sentori, and Galayor Networks. They primarily invest in startups in the web development and satellite communication sectors.