Third Rock Ventures V, L.P.

CIK 0001778071

10% Owner

Filings

Latest May 28, 2026

Issuers covered

Showing

11 of 11

Page 1

Track record

6 of 11 open-market trades scored (55% price coverage) - 5 issuers without price data. Returns are signed: a +10% move on a sale shows as -10% (insider was wrong).

Horizon	Trades	Win rate	Avg	Median	Best	Worst
30 days	6	100%	+12.6%	+10.6%	+19.4%	+7.2%
90 days	5	60%	+28.3%	+53.8%	+68.4%	-22.1%
180 days	5	60%	+30.6%	+85.6%	+108.7%	-66.3%
365 days	5	100%	+239.9%	+363.2%	+438.6%	+7.6%

Issuers

Companies where Third Rock Ventures V, L.P. has filed

Ticker	Issuer	Filings	Last filed
RAPP	Rapport Therapeutics, Inc.	5	May 28, 2026
SEPN	Septerna, Inc.	3	Feb 26, 2025
MAZE	Maze Therapeutics, Inc.	2	Nov 5, 2025
CRGX	Cargo Therapeutics, Inc.	1	Nov 14, 2023

All filings

11 Form 4 / 4-A filings, newest first

Filed	Issuer	Top transaction	Shares	Price	Value
May 28, 2026	RAPPRapport Therapeutics, Inc.	SSale	18,572	$40.047	$743,753
May 13, 2026	RAPPRapport Therapeutics, Inc.	SSale	133,618	$40.244	$5,377,323
May 11, 2026	RAPPRapport Therapeutics, Inc.	SSale	271,495	$40.121	$10,892,651
Apr 21, 2026	RAPPRapport Therapeutics, Inc.	SSale	426,005	$40.317	$17,175,244
Nov 5, 2025	MAZEMaze Therapeutics, Inc.	JOther	1,600,000	-	-
Feb 26, 2025	SEPNSepterna, Inc.	PPurchase	18,861	$5.999	$113,147
Feb 24, 2025	SEPNSepterna, Inc.	PPurchase	612,674	$5.92	$3,627,030
Feb 4, 2025	MAZEMaze Therapeutics, Inc.	CConversion	5,762,788	$0.00	$0
Oct 28, 2024	SEPNSepterna, Inc.	PPurchase	370,500	$18.00	$6,669,000
Jun 10, 2024	RAPPRapport Therapeutics, Inc.	CConversion	6,551,449	$0.00	$0
Nov 14, 2023	CRGXCargo Therapeutics, Inc.	PPurchase	1,333,333	$15.00	$19,999,995

Showing 1-11 of 11

Page 1 of 1

Real-time Form 4 intelligence. Smarter insider tracking.

Filed		Top transaction	Shares	Price	Value