| Quarter | Holdings | Value ($000) | Form Type | Date Filed | Filing ID | Name |
|---|---|---|---|---|---|---|
| Q3 2015 | 5 | 1,071,141 | 13F-HR | 11/3/2015 | 000160013515000001 | Third Rock Ventures, LLC |
| Q2 2015 | 4 | 960,816 | 13F-HR | 7/30/2015 | 000101297515000564 | Third Rock Ventures, LLC |
| Q1 2015 | 4 | 937,580 | 13F-HR | 4/29/2015 | 000101297515000311 | Third Rock Ventures, LLC |
| Q4 2014 | 6 | 1,222,711 | 13F-HR | 1/26/2015 | 000101297515000065 | Third Rock Ventures, LLC |
| Q3 2014 | 6 | 857,333 | 13F-HR | 10/22/2014 | 000160013514000005 | Third Rock Ventures, LLC |
| Q2 2014 | 4 | 468,346 | 13F-HR | 7/30/2014 | 000160013514000004 | Third Rock Ventures, LLC |
| Q1 2014 | 4 | 564,047 | 13F-HR | 4/30/2014 | 000160013514000003 | Third Rock Ventures, LLC |
| Q4 2013 | 3 | 353,023 | 13F-HR | 2/14/2014 | 000160013514000002 | Third Rock Ventures, LLC |