Insider · CIK 0001408591

THIRD ROCK VENTURES LP

Reports to the SEC for 8 companies · BOSTON, MA

sec.gov

Transactions

Companies

Filings

CIK

0001408591

Forms 4 and 5

Insider transactions

50 trades

Date	Company	Role	Code	Shares	Price	Value	Shares after
2018-08-30	RYTMRHYTHM PHARMACEUTICALS, INC.J Other	10% Owner	JOther	−1M sh	—	—	2,981,437
2018-08-22	CONSTELLATION PHARMACEUTICALS INCX Exercise of In-Money	10% Owner	XExercise of In-Money	+51K sh	$1.55	+$79.1K	3,034,083
2018-08-22	CONSTELLATION PHARMACEUTICALS INCWarrant (right to buy)X Exercise of In-Money	10% Owner	XExercise of In-Money	−51K sh	—	—	0
2018-07-23	CONSTELLATION PHARMACEUTICALS INCC Conversion	10% Owner	CConversion	+2.71M sh	—	—	2,716,384
2018-07-23	CONSTELLATION PHARMACEUTICALS INCP Purchase	10% Owner	PPurchase	+267K sh	$15.00	+$4M	2,983,051
2018-07-23	CONSTELLATION PHARMACEUTICALS INCSeries A Preferred StockC Conversion	10% Owner	CConversion	−11M sh	—	—	0
2018-07-23	CONSTELLATION PHARMACEUTICALS INCSeries B Preferred StockC Conversion	10% Owner	CConversion	−10.7M sh	—	—	0
2018-07-23	CONSTELLATION PHARMACEUTICALS INCSeries D Preferred StockC Conversion	10% Owner	CConversion	−1.09M sh	—	—	0
2018-07-23	CONSTELLATION PHARMACEUTICALS INCSeries E Preferred StockC Conversion	10% Owner	CConversion	−2.29M sh	—	—	0
2018-07-23	CONSTELLATION PHARMACEUTICALS INCSeries E-1 Preferred StockC Conversion	10% Owner	CConversion	−3.11M sh	—	—	0
2018-07-23	CONSTELLATION PHARMACEUTICALS INCSeries F Preferred StockC Conversion	10% Owner	CConversion	−1M sh	—	—	0
2017-10-18	CTMXCytomX Therapeutics, Inc.J Other	10% Owner	JOther	−1M sh	—	—	3,320,348
2017-10-10	RYTMRHYTHM PHARMACEUTICALS, INC.C Conversion	10% Owner	CConversion	+3.96M sh	—	—	3,981,437
2017-10-10	RYTMRHYTHM PHARMACEUTICALS, INC. · Series A Convertible Preferred StockC Conversion	10% Owner	CConversion	−9.48M sh	—	—	0
2017-10-10	RYTMRHYTHM PHARMACEUTICALS, INC. · Series A-1 Junior Preferred StockC Conversion	10% Owner	CConversion	−26.9M sh	—	—	0
2017-07-13	CTMXCytomX Therapeutics, Inc.J Other	10% Owner	JOther	−850K sh	—	—	4,320,348
2017-03-27	CTMXCytomX Therapeutics, Inc.S Sale	10% Owner	SSale	−650K sh	$18.00	−$11.7M	5,170,348
2017-03-23	CTMXCytomX Therapeutics, Inc.S Sale	10% Owner	SSale	−1M sh	$17.00	−$17M	5,820,348
2017-03-15	CTMXCytomX Therapeutics, Inc.J Other	10% Owner	JOther	−850K sh	—	—	6,820,348
2016-11-07	CTMXCytomX Therapeutics, Inc.J Other	10% Owner	JOther	−1M sh	—	—	7,670,348
2015-10-14	CTMXCytomX Therapeutics, Inc.C Conversion	10% Owner	CConversion	+8.67M sh	—	—	8,670,351
2015-10-14	CTMXCytomX Therapeutics, Inc. · Series B-1 Preferred StockC Conversion	10% Owner	CConversion	−8.11M sh	—	—	0
2015-10-14	CTMXCytomX Therapeutics, Inc. · Series C Preferred StockC Conversion	10% Owner	CConversion	−565K sh	—	—	0
2015-07-23	LRMRLarimar Therapeutics, Inc.J Other	10% Owner	JOther	−1.2M sh	—	—	2,002,045
2015-07-23	LRMRLarimar Therapeutics, Inc.J Other	10% Owner	JOther	+479K sh	—	—	479,081
2015-07-23	LRMRLarimar Therapeutics, Inc.J Other	10% Owner	JOther	−479K sh	—	—	0
2015-05-15	LRMRLarimar Therapeutics, Inc.J Other	10% Owner	JOther	−1M sh	—	—	3,202,045
2015-05-15	LRMRLarimar Therapeutics, Inc.J Other	10% Owner	JOther	+444K sh	—	—	443,935
2015-05-15	LRMRLarimar Therapeutics, Inc.J Other	10% Owner	JOther	−444K sh	—	—	0
2015-05-14	Foundation Medicine, Inc.J Other	10% Owner	JOther	−828K sh	—	—	0
2015-05-14	Foundation Medicine, Inc.J Other	10% Owner	JOther	+312K sh	—	—	312,498
2015-05-14	Foundation Medicine, Inc.J Other	10% Owner	JOther	−312K sh	—	—	0
2015-04-07	Foundation Medicine, Inc.S Sale	10% Owner	SSale	−4.1M sh	$50.00	−$205M	828,456
2015-04-07	Foundation Medicine, Inc.S Sale	10% Owner	SSale	−3.98M sh	$50.00	−$199M	950,956
2015-03-24	LRMRLarimar Therapeutics, Inc.J Other	10% Owner	JOther	−1.4M sh	—	—	4,202,045
2015-03-24	LRMRLarimar Therapeutics, Inc.J Other	10% Owner	JOther	+347K sh	—	—	346,658
2015-03-24	LRMRLarimar Therapeutics, Inc.J Other	10% Owner	JOther	−347K sh	—	—	0
2015-02-19	AGIOAGIOS PHARMACEUTICALS, INC.J Other	10% Owner	JOther	−3.07M sh	—	—	0
2015-02-19	AGIOAGIOS PHARMACEUTICALS, INC.J Other	10% Owner	JOther	+760K sh	—	—	760,195
2015-02-19	AGIOAGIOS PHARMACEUTICALS, INC.J Other	10% Owner	JOther	−760K sh	—	—	0
2015-02-03	bluebird bio, Inc.J Other	10% Owner	JOther	−1.22M sh	—	—	0
2015-02-03	bluebird bio, Inc.J Other	10% Owner	JOther	+301K sh	—	—	300,863
2015-02-03	bluebird bio, Inc.J Other	10% Owner	JOther	−301K sh	—	—	0
2014-09-12	bluebird bio, Inc.S Sale	10% Owner	SSale	−38K sh	$36.59	−$1.39M	1,215,054
2014-09-11	bluebird bio, Inc.S Sale	10% Owner	SSale	−87K sh	$36.52	−$3.18M	2,329,974
2014-09-11	bluebird bio, Inc.J Other	10% Owner	JOther	−1.08M sh	—	—	1,253,054
2014-09-11	bluebird bio, Inc.J Other	10% Owner	JOther	+79.1K sh	—	—	79,062
2014-09-11	bluebird bio, Inc.J Other	10% Owner	JOther	−79.1K sh	—	—	0
2014-09-11	AGIOAGIOS PHARMACEUTICALS, INC.J Other	10% Owner	JOther	−825K sh	—	—	3,070,090
2014-09-11	AGIOAGIOS PHARMACEUTICALS, INC.J Other	10% Owner	JOther	+60.6K sh	—	—	60,567

Recent filings

Accepted (ET)
Sep 44
THIRD ROCK VENTURES LP0000899243-18-023708
SEC(opens sec.gov)
Aug 244
THIRD ROCK VENTURES LP0000899243-18-023212
SEC(opens sec.gov)
Jul 244
THIRD ROCK VENTURES LP0000899243-18-020534
SEC(opens sec.gov)
Oct 194
STARR KEVIN P0000899243-17-024464
SEC(opens sec.gov)
Oct 114
STARR KEVIN P0000899243-17-024006
SEC(opens sec.gov)
Jul 134
CytomX Therapeutics, Inc.0000899243-17-018238
SEC(opens sec.gov)
Mar 274
CytomX Therapeutics, Inc.0000899243-17-008731
SEC(opens sec.gov)
Mar 164
CytomX Therapeutics, Inc.0000899243-17-007785
SEC(opens sec.gov)
Nov 94
CytomX Therapeutics, Inc.0000899243-16-033012
SEC(opens sec.gov)

Companies

Address

29 NEWBURY STREET

BOSTON, MA, 02116