Third Rock Ventures GP IV, L.P. — SEC Form 4 filings
SEC reporting owner CIK 1688326. 20 Form 4 filings on record with FilingPulse; latest filed 2025-11-05.
Transaction summary — filings shown
Covers all 20 filings on record, filed 2024-02-21 to 2025-11-05. Counts and totals are arithmetic on values as filed — descriptive data, not a recommendation.
- Open-market purchases (code P, non-derivative): none reported.
- Open-market sales (code S, non-derivative): 24 legs across 18 filings — 5,977,401 shares, $51,854,757 total (shares × price as filed).
- Other reported legs (grants, option exercises, tax withholding, gifts, derivative-security transactions, …): 6.
- Largest priced transaction: sale of 1,100,000 shares @ $7.01 ($7,712,760) in Tango Therapeutics, Inc., filed 2025-08-21.
By issuer — same filings
Open-market purchase/sale legs on non-derivative securities, grouped by issuer. Role is as filed on the newest filing for that issuer. Dollar totals cover priced legs only (shares × price as filed). Ordered by priced transaction value, largest first.
| Issuer | Role (as filed) | Filings | Purchases (P) | Sales (S) | Other legs |
|---|---|---|---|---|---|
| Tango Therapeutics, Inc. (TNGX) | 10% owner | 18 | — | 24 legs · 5,977,401 sh · $51,854,757 | — |
| Maze Therapeutics, Inc. (MAZE) | 10% owner | 2 | — | — | 6 |
Form 4 filings — Third Rock Ventures GP IV, L.P.
| Filed | Form | Issuer | Reported transactions | Source |
|---|---|---|---|---|
| 2025-11-05 | 4 | Maze Therapeutics, Inc. (MAZE) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC, Third Rock Ventures V, L.P., Third Rock Ventures GP V, LP, TRV GP V, LLC | Other (J): 1,600,000 | EDGAR |
| 2025-10-27 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 477,401 @ $10.15 | EDGAR |
| 2025-09-29 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 500,000 @ $8.02 | EDGAR |
| 2025-09-17 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 363,541 @ $7.04 | EDGAR |
| 2025-09-09 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 642,906 @ $7 · Sale (S): 86,459 @ $7.04 | EDGAR |
| 2025-08-26 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 302,194 @ $7 | EDGAR |
| 2025-08-21 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 1,100,000 @ $7.01 | EDGAR |
| 2025-02-04 | 4 | Maze Therapeutics, Inc. (MAZE) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC, Third Rock Ventures V, L.P., Third Rock Ventures GP V, LP, TRV GP V, LLC | Conversion (C): 5,762,788 @ $0 · Conversion (C): 950,800 @ $0 · Conversion (C): 45,833,334 (derivative) @ $0 · Conversion (C): 9,725,709 (derivative) @ $0 · Conversion (C): 9,166,666 (derivative) @ $0 | EDGAR |
| 2024-09-17 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 67,400 @ $10.53 | EDGAR |
| 2024-09-09 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 75,000 @ $11.56 | EDGAR |
| 2024-09-04 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 175,000 @ $11.60 | EDGAR |
| 2024-08-29 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 25,000 @ $11.55 | EDGAR |
| 2024-08-20 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 135,000 @ $9.79 · Sale (S): 150,000 @ $10.09 | EDGAR |
| 2024-08-01 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 95,000 @ $9.80 · Sale (S): 100,000 @ $9.93 · Sale (S): 40,000 @ $9.80 | EDGAR |
| 2024-07-30 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 50,000 @ $9.84 | EDGAR |
| 2024-07-26 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 200,000 @ $9.82 · Sale (S): 100,599 @ $9.87 | EDGAR |
| 2024-07-24 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 262,740 @ $9.78 · Sale (S): 125,000 @ $9.79 | EDGAR |
| 2024-07-22 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 191,490 @ $9.81 | EDGAR |
| 2024-07-18 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 550,171 @ $9.79 | EDGAR |
| 2024-02-21 | 4 | Tango Therapeutics, Inc. (TNGX) jointly with Third Rock Ventures IV, L.P., TRV GP IV, LLC | Sale (S): 162,500 @ $12 | EDGAR |
FilingPulse's Form 4 archive currently extends back to 2024-01-11 and is expanding backward through EDGAR history — earlier filings by this insider may not be indexed yet. Names and roles are shown as filed.
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