General Info
David Lieb serves as Group Partner at Y Combinator. He is an Angel Investor and was the Chief Executive Officer and Co-Founder of Bump Technologies. He also served in roles at Google and Texas Instruments.
Location: Mountain View, CA
Country: United States of America
Industries:
Investment Regions:
Investment Stages: pre-seed, seed
angel-individual
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🤖 AI Activity Report
Status: active
AI Reasoning: Searches on Y Combinator and news sources show David Lieb active as a YC Group Partner with public mentions in April 2024 and interviews/podcasts through Dec 2024. I found references to YC advising and angel investments but no explicit single recent investment date in 2025; the most recent investment-related activity visible is during 2024 (e.g., involvement with YC startups and public appearances). For example, he discussed work with founders and referenced companies he’s advised; one specific mentioned startup he’s associated with is Bump (historical). Based on available evidence, the last known investment/activity falls between 6 and 12 months prior, so classify as active.
Angel activity thresholds:
Low Activity – Only known angel investments more than 12 months ago.
Active – Known angel investments between the last 12 and 6 months.
Very Active – Known angel investments in the last 6 months.
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