What does 645 Ventures invest in?
645 Ventures invests most often at Seed and Series A (59% of the rounds on record), in sectors such as Subscription, B-to-c and B2b2c.

United States · Investor
Last cheque observed Oct 2026; 120 cheques on record.
Deploying nowNew fund $194M, Jun 2023VC firm
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28 cheques in the last 12 months
Mostly Seed and Series A: 59% of its rounds
Sole investor in 2 rounds, median $3.9M
2 exits from the portfolio
645 Ventures is a New York and San Francisco-based early-stage venture firm that invests in exceptional foundersFrom their own website
Every round we can evidence, newest first120 appearances
24 rounds
19 rounds
An announcement gives the size of the round, not the size of this investor's cheque: the only rounds that imply a cheque are those where they were the sole named investor.
Named by the firm itself, on a filing, its Form ADV or its company registration2 named
We also hold 8 people at this firm from the lists this database was built from: a weaker source than the filings, since a list does not say when a title ended. Login to see them.
From the firm's own filings with the SEC, which it must file accurately by law
Companies it backed that were later bought or listed2 in all
An exit counts when it came after the firm's first round in the company. From historical deal records.
The investors most often in the same rounds as 645 Ventures. A count of rooms they were both in, not a relationship either has claimed.
The latest companies 645 Ventures put money into.
645 Ventures invests most often at Seed and Series A (59% of the rounds on record), in sectors such as Subscription, B-to-c and B2b2c.
120 investments on record, 28 of them in the last 12 months, and it led 4. The most recent was in Oct 2026.
Its most recent investments on record: General Compute (Series A, Oct 2026), Lightsprint (Seed, Oct 2026) and Kickoff (Debt, Sept 2026).
The median round it joins is $10M. It says it writes cheques of $750K to $6.0M.
Sometimes: it led 4 of its 120 investments on record (3%).
Most of the companies it backs are in the United States (92%) and the United Kingdom (5%).
Yes: it is actively investing, with 28 investments in the last 12 months.
Most often Y Combinator (22 rounds together), 500 Global (11 rounds together) and FJ Labs (8 rounds together).
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Built from the rounds we watched, its filings and its own website, refreshed every night. How we count · Report a correction · Is this your firm? Claim it