entity Updated 2026-07-11 Tags: Person, Venture-Capital, Startups

Don Valentine

Don Valentine appears in Ron Conway on National Semiconductor, Altos, and Early Angel Investing as the Sequoia Capital investor connected to Altos Computer and later to Ron Conway’s move toward investing. Conway says Valentine joined the Altos board, went on the IPO roadshow, and later asked Conway what he wanted to do next after operating companies.

Valentine’s role in the source is a practical Founder-Investor Learning bridge. He invited Conway to observe boards and watch how founders received advice, helping Conway see that investing could let him advise founders, advocate for them, and help with customers without running the company day to day.

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