General Info
Michael Seibel is a renowned Partner at Y Combinator with a diverse investment portfolio. His investment focus areas include Consumer Internet, Enterprise, and stages from Pre-seed to Series B. He has a strong track record in the tech industry, having co-founded Justin.tv/Twitch and Socialcam. Seibel’s investments typically range from $150K to $150K per company. Geographically, he operates from San Francisco, CA, and he has a history of investing in companies like Dripos, Meticulate, DaLMatian, Basalt Tech, and others. Seibel’s collaboration style involves active coaching for startup founders and having hard conversations to ensure growth and success.
Location: Mountain View, CA
Country: United States of America
Industries:
Investment Regions:
Investment Stages: pre-seed, seed
Website: michaelseibel.com
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🤖 AI Activity Report
Status: very-active
AI Reasoning: Michael Seibel announced transition to Partner Emeritus in March 2025 per Y Combinator blog and TechCrunch; he remained publicly active with YC-related activity and his likely last investments include companies he invested in 2024 (examples linked in coverage include startups associated with YC batches). Specifically, TechCrunch noted his stepping back from leadership in 2024 but he announced transition in March 2025; this indicates investment activity within the last 6 months (the investment in or around March 2025 related to YC startups such as Dripos is within less than 6 months). Therefore tag as very-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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