Third Rock Ventures III, L.P.
Third Rock Ventures · adviser of record: Third Rock Ventures, LLC · 2012 vintage
Third Rock Ventures III, L.P. is a 2012 venture fund managed by Third Rock Ventures. It reported $41.8mm in gross assets at year-end 2025, against a peak of $1.28bn in 2020.
- Latest value held
- $41.8mm year-end 2025
- Peak
- $1.28bn year-end 2020
- Fund size
- Not on file
Value held by year-end
Gross asset value reported on Form ADV at each year-end. Open in the Fund Tracker
| Year-end | Gross assets | ÷ size | Change |
|---|---|---|---|
| 2025 | $41.8mm | – | +24% over 2 yrs |
| 2023 | $33.7mm | – | -80% |
| 2022 | $171mm | – | -65% |
| 2021 | $484mm | – | -62% |
| 2020 | $1.28bn | – | +95% |
| 2019 | $657mm | – | -5% |
| 2018 | $692mm | – | -20% |
| 2017 | $863mm | – | +10% |
| 2016 | $782mm | – | +1% |
| 2015 | $773mm | – | +53% |
| 2014 | $505mm | – | +0% |
| 2013 | $505mm | – | -2% |
| 2012 | $516mm | – | – |
Other funds from Third Rock Ventures
- Third Rock Ventures VI, L.P. 2022
- Third Rock Ventures V, L.P. 2019
- Third Rock Ventures IV, L.P. 2016
- Third Rock Ventures II, L.P. 2011
- Third Rock Ventures, L.P. 2011
About these numbers
Gross asset value is what the manager reports holding in the fund at each fiscal year-end, on SEC Form ADV, Schedule D. It includes the GP’s own commitment and is before carried interest, so it is not the LPs’ net return, and it does not show cash already distributed. A fall in value can mean distributions, markdowns or both. Fund size is the amount sold reported on Form D, which for some funds reflects only a first close. Private fund ID 805-8803147487. Data updated October 13, 2026.
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