What does Third Rock Ventures invest in?
Third Rock Ventures invests most often at Series A and Series B (81% of the rounds on record), in sectors such as Biotech, Pharmaceuticals and Bio.

United States · Investor
Filed with the SEC to raise a fund in Jun 2026, closing $1,105M. Last cheque observed Jul 2019.
QuietNew fund $1.1B, Jun 2026VC firm
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84 rounds on record
Mostly Series A and Series B: 81% of its rounds
Sole investor in 15 rounds, median $47M
5 exits from the portfolio
Third Rock Ventures is a leading healthcare venture firm focused on advancing disruptive areas of science and medicineFrom their own website
Every round we can evidence, newest first84 appearances
3 rounds
6 rounds
5 rounds
4 rounds
6 rounds
10 rounds
7 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 registration15 named
We also hold 41 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
Weaker than a round we watched, stronger than a list somebody sold us. A firm is far less willing to put a company on its own site that it never funded.
Companies it backed that were later bought or listed5 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 Third Rock Ventures. A count of rooms they were both in, not a relationship either has claimed.
The latest companies Third Rock Ventures put money into.
Third Rock Ventures invests most often at Series A and Series B (81% of the rounds on record), in sectors such as Biotech, Pharmaceuticals and Bio.
84 investments on record, 0 of them in the last 12 months, and it led 1. The most recent was in Jul 2019.
Its most recent investments on record: Revolution Medicines (Series C, Jul 2019), Thrive (Series A, May 2019) and Public food doctor (Undisclosed round, Apr 2019).
The median round it joins is $56M. It says it writes cheques of $5.0M to $100M.
Sometimes: it led 1 of its 84 investments on record (1%).
Most of the companies it backs are in the United States (95%).
No investments in the last 12 months; the latest was in Jul 2019.
Most often The Column Group (11 rounds together), Casdin Capital (8 rounds together) and Polaris Partners (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