Significant Ownership of Third Rock Ventures IV, L.P.

Signature - Title
/s/ Kevin Gillis - Kevin Gillis, COO of TRV GP IV, LLC, the general partner of Third Rock Ventures GP IV, L.P., the general partner of Third Rock Ventures IV, L.P.
Location
Boston, MA
Summary
This page shows a list of all the recent SCHEDULE 13D/G filings made by Third Rock Ventures IV, L.P..

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Significant Ownership of Third Rock Ventures IV, L.P.

Sym Company Class Ownership Holdings Value Net Change Nb Shares Change % Reporting Name Report Period
MAZE Maze Therapeutics, Inc. Common Stock, $0.001 par value per share 9.3% $179,808,372 -$64,304,000 4,473,958 -26% Third Rock Ventures IV, L.P. 31 Dec 2025
TNGX Tango Therapeutics, Inc. Common Stock 4.7% $74,901,244 -$17,625,000 6,374,574 -19% Third Rock Ventures IV, L.P. 06 Feb 2026

Schedules 13D/G Reported by Third Rock Ventures IV, L.P.:

Sym Target Class Ownership Change Current Shares Change Value Reporting name Form Report Period Filing Date
* An asterisk sign (*) next to the price indicates that the price is likely invalid.