General Info
Aileen Lee is the Founder and General Partner at Cowboy Ventures. She focuses on investing in technology startups that reimagine work and life. Aileen partners with early-stage enterprise and consumer-oriented teams to build pioneering products. Cowboy Ventures primarily operates as a seed-stage fund, with Aileen actively involved in the earliest stages of startups and continuing support through various growth phases. She has a broad geographical preference, with a particular interest in U.S.-based startups. Aileen has an exceptional track record and professional career, known for coining the term ‘unicorn’ to describe startups valued over $1 billion. She has invested in companies like Bloom Energy, Dollar Shave Club, and Rent the Runway. Aileen’s investment check sizes range from $100K to $2.0M, with a sweet spot of $1M. She values partnership and collaboration, actively working with teams to bring visionary ideas to fruition.
Location: Palo Alto, CA
Country: United States of America
Industries:
Investment Regions: EU, NA
Investment Stages: pre-seed, seed
angel-individual
EU, NA
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🤖 AI Activity Report
Status: very-active
AI Reasoning: Cowboy Ventures and Aileen Lee show recent activity in 2025 (firm blog posts Jan-Sep 2025 and team hires). Cowboy’s portfolio pages and news indicate investments and portfolio updates in 2025; for example, Cowboy lists portfolio activity (LaunchNotes) and site posts in 2025. Evidence of investment-related activity within the last 6 months places Aileen Lee in the most active bucket. The investor has made investments or firm activity within less than 6 months (examples: portfolio updates and firm hires in early 2025 and a blog post in Sep 2025).
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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