Third Rock Ventures IV, L.P.
SEC insider (Form 3/4/5 filer). CIK 0001688327. 10% Owner at Maze Therapeutics, Inc. (MAZE) and 1 other issuer. 13 reported Form 4/5 transactions since Sep 2024; latest on Nov 4, 2025. Located in BOSTON, MA.
Companies Third Rock Ventures IV, L.P. has filed insider reports for
- Maze Therapeutics, Inc. (MAZE): 10% Owner
- Tango Therapeutics, Inc. (TNGX): 10% Owner
Third Rock Ventures IV, L.P.
CIK: 0001688327
Transaction Breakdown
High conviction signal
Position reduction
Derivative conversions
Compensation grants
Gifts, tax withholding, conversions, dispositions to the issuer and other codes
Discretionary Trading P&L
Holdings
Transaction History (13 total)
- Nov 4, 2025MAZE
Maze Therapeutics, Inc.
OtherDirect1.6M shares- - Oct 23, 2025TNGX
Tango Therapeutics, Inc.
SaleDirect477.4K shares at avg. $10.15$4.8M - Sep 25, 2025TNGX
Tango Therapeutics, Inc.
SaleDirect500K shares at avg. $8.02$4.0M - Sep 16, 2025TNGX
Tango Therapeutics, Inc.
SaleDirect363.5K shares at avg. $7.04$2.6M - Sep 8, 2025TNGX
Tango Therapeutics, Inc.
SaleDirect86.5K shares at avg. $7.04$609K - Sep 5, 2025TNGX
Tango Therapeutics, Inc.
SaleDirect642.9K shares at avg. $7.00$4.5M - Aug 22, 2025TNGX
Tango Therapeutics, Inc.
SaleDirect302.2K shares at avg. $7.00$2.1M - Aug 19, 2025TNGX
Tango Therapeutics, Inc.
SaleDirect1.1M shares at avg. $7.01$7.7M - Feb 3, 2025MAZE
Maze Therapeutics, Inc.
ConversionIndirect950.8K shares- - Feb 3, 2025MAZE
Maze Therapeutics, Inc.
ConversionDirect5.8M shares-
| Type | Shares | Price | Ownership | |||
|---|---|---|---|---|---|---|
| Nov 4, 2025 |  MAZE Maze Therapeutics, Inc. | Other | 1,600,000 | - | - | Direct |
| Oct 23, 2025 |  TNGX Tango Therapeutics, Inc. | Sale | 477,401 | $10.15 | $4,846,575 | Direct |
| Sep 25, 2025 | TNGX Tango Therapeutics, Inc. | Sale | 500,000 | $8.02 | $4,008,500 | Direct |
| Sep 16, 2025 | TNGX Tango Therapeutics, Inc. | Sale | 363,541 | $7.04 | $2,559,329 | Direct |
| Sep 8, 2025 | TNGX Tango Therapeutics, Inc. | Sale | 86,459 | $7.04 | $608,628 | Direct |
| Sep 5, 2025 | TNGX Tango Therapeutics, Inc. | Sale | 642,906 | $7.00 | $4,500,342 | Direct |
| Aug 22, 2025 | TNGX Tango Therapeutics, Inc. | Sale | 302,194 | $7.00 | $2,115,358 | Direct |
| Aug 19, 2025 | TNGX Tango Therapeutics, Inc. | Sale | 1,100,000 | $7.01 | $7,712,760 | Direct |
| Feb 3, 2025 | MAZE Maze Therapeutics, Inc. | Conversion | 950,800 | - | - | Indirect |
| Feb 3, 2025 | MAZE Maze Therapeutics, Inc. | Conversion | 5,762,788 | - | - | Direct |
1-10 of 13 transactions