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645 Ventures Management, LLC

645ventures.com Direct investor

645 Ventures is an early-stage venture capital firm based in New York and San Francisco. It invests in exceptional founders across various sectors, with check sizes ranging from $1M to $15M depending on stage.

645 Ventures Management, LLC is a venture capital firm headquartered in New York, United States. It invests directly in companies, from seed to growth, in enterprise, deep Tech, AI Infra / DevTools and fintech. Its stated cheque size is $1 — $5M Seed; $5 — $10M Series A; $5 — $15M Growth and late stage.

“We back exceptional founders at the earliest stages. Pre-product. Pre-revenue. Pre-consensus.”

— 645 Ventures Management, LLC, own website
Layer
Direct investor
Type
Venture capital
Stage
Seed – Growth
Headquarters
New York, United States
Invests in
US
Sectors
Enterprise, Deep Tech, AI Infra / DevTools, Fintech, Consumer, Cybersecurity, Health Tech
Cheque size
$1 — $5M Seed; $5 — $10M Series A; $5 — $15M Growth and late stage

Co-invests most often with

Derived from portfolio pages both investors publish themselves: each pair below lists at least one company in common. 107 co-investors found.

  • AI Ventures Management, LLC 5 shared companies: yahoo.com, fastcompany.com, bizjournals.com, pulse2.com…
  • At One Ventures 4 shared companies: yahoo.com, fastcompany.com, bizjournals.com, washingtonpost.com
  • BOLD Capital Partners 4 shared companies: yahoo.com, fastcompany.com, pulse2.com, washingtonpost.com
  • Celesta Capital 4 shared companies: yahoo.com, fastcompany.com, bizjournals.com, pulse2.com
  • Transmedia Capital 4 shared companies: yahoo.com, fastcompany.com, bizjournals.com, pulse2.com
  • Congruent Ventures 3 shared companies: yahoo.com, bizjournals.com, pulse2.com
  • Defy.vc 3 shared companies: yahoo.com, fastcompany.com, bizjournals.com
  • Female Founders Fund 3 shared companies: yahoo.com, fastcompany.com, washingtonpost.com
  • Foresite Capital 3 shared companies: yahoo.com, fastcompany.com, bizjournals.com
  • Leo Capital 3 shared companies: yahoo.com, bizjournals.com, pulse2.com

and 97 more — the graph.

Where this comes from

Every fact above was read from a page 645 Ventures Management, LLC publishes itself. Nothing is taken from third-party databases. Investment activity (deals, co-investors) is not yet recorded.

  • https://645ventures.com/name, is_investor, layer, type, hq_country, hq_city, invests_in_geographies, stage_min, stage_max, sectors, cheque_size, thesis_quote, thesis_quote_page, description, status, confidence

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Record 2626 · added 2026-09-03 · link last verified 2026-09-06 · confidence medium

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