InsidersTradesSigma
Total declarations
Companies
▲ Purchases (0 ops.)
▼ Sales (19 ops.)
Insider track record
OtherDisclosed buys
0
Disclosed sells
19
Not enough buy signals with a settled T+90 horizon to measure a track record yet.
Signal history
Browse the full record of transactions filed by Third Rock Ventures IV, L.P.. Director active across 3 companies, notably Magenta Therapeutics, Inc.. Cumulatively, 22 disclosures have been recorded. Breakdown: 0 buy · 19 sells. Total volume traded: €42.4m. History available since 7 February 2023. The latest transaction was disclosed on 23 October 2025 (Cession). Regulator: SEC (Form 4). The full history is free.
Companies and markets linked to Third Rock Ventures IV, L.P.
Open company profiles for insider transactions, fundamentals and analyst consensus when available.
Declarations22 total
1,600,000 sharesCommon StockSEC:0001193125-25-266981:0
477,401 shares@ US$10.15210.2% of flowCommon StockSEC:0001193125-25-251606:0
500,000 shares@ US$8.0179.4% of flowCommon StockSEC:0001193125-25-223227:0
363,541 shares@ US$7.046.5% of flowCommon StockSEC:0001193125-25-206453:0
642,906 shares@ US$7.0012.5% of flowCommon StockSEC:0001193125-25-199177:0
302,194 shares@ US$7.006.7% of flowCommon StockSEC:0000950170-25-111457:0
1,100,000 shares@ US$7.011624.4% of flowCommon StockSEC:0000950170-25-110662:0
5,762,788 shares0Common StockSEC:0000950170-25-013760:0
67,400 shares@ US$10.53053.4% of flowCommon StockSEC:0000950170-24-107330:0
75,000 shares@ US$11.56184.2% of flowCommon StockSEC:0000950170-24-104863:0
175,000 shares@ US$11.59839.8% of flowCommon StockSEC:0000950170-24-103661:0
25,000 shares@ US$11.54661.4% of flowCommon StockSEC:0000950170-24-101910:0
135,000 shares@ US$9.78856.5% of flowCommon StockSEC:0000950170-24-099253:0
95,000 shares@ US$9.80124.6% of flowCommon StockSEC:0000950170-24-089474:0
50,000 shares@ US$9.8392.4% of flowCommon StockSEC:0000950170-24-087862:0
200,000 shares@ US$9.81589.7% of flowCommon StockSEC:0000950170-24-086894:0
262,740 shares@ US$9.781912.6% of flowCommon StockSEC:0000950170-24-086051:0
191,490 shares@ US$9.80989.2% of flowCommon StockSEC:0000950170-24-085256:0
550,171 shares@ US$9.790326.4% of flowCommon StockSEC:0000950170-24-084580:0
162,500 shares@ US$12.009.7% of flowCommon StockSEC:0000950170-24-018198:0
2,200,000 shares@ US$0.83100.0% of flowCommon StockSEC:0000899243-23-004411:0
1,250,000 sharesCommon StockSEC:0000899243-21-034297:0
22 of 22 declarations
About Third Rock Ventures IV, L.P.
Third Rock Ventures IV, L.P. is a declarant linked to Tango Therapeutics, Inc., Maze Therapeutics, Inc. and Magenta Therapeutics, Inc. It has filed 22 filings in total, and among the recent filings tracked, they are all sales, for 42430088 EUR between 2021-08-26 and 2025-11-05.
