General Info
Andy Sack is the Managing Partner at Founder’s Co-Op, an investment adviser providing management services in private equity and venture capital funds. Founder’s Co-Op focuses on seed and early-stage investments in the technology sector with a geographical preference for the Pacific Northwest. Andy Sack has a track record of investing in various sectors, with an investment check size ranging from $100k to $5.0M, with a sweet spot of $1.5M. He has made 68 investments with partnerships including Edward Lando, Aadil Mamujee, and Packy McCormick.
Location: Seattle, WA
Country: United States of America
Industries:
Investment Regions:
Investment Stages: pre-seed, seed
angel-individual
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🤖 AI Activity Report
Status: very-active
AI Reasoning: Found evidence of Andy Sack’s recent investment activity: he was involved in raising $10M for Forum3 (reported Dec 14, 2022) and public posts in 2025 show active engagement; additionally, social posts in 2025 (X and Food On Demand March 7, 2025) indicate ongoing investing/advising activity with a recent startup involvement (Forum3). The most recent identified investment-related activity is in 2025, which is within 6 months from the reference date, indicating very active status.
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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