X0306 4/A 2019-11-08 2019-11-12 true 0001434418 CONSTELLATION PHARMACEUTICALS INC CNST 0000315054 REGENTS OF THE UNIVERSITY OF CALIFORNIA 1111 BROADWAY, SUITE 2100 OAKLAND CA 94607 true Common Stock 2019-11-08 4 S 0 100000 30.25 D 2197406 D Common Stock 2019-11-08 4 S 0 74316 30.44 D 2123090 D Common Stock 2019-11-12 4 S 0 12800 32.77 D 2110290 D Share amount amended from 100,0000 to 100,000, and Securities Acquired (A) amended to Securities Disposed of (D). Securities Acquired (A) amended to Securities Disposed of (D), and Amount of Securities Beneficially Owned Following Reported Transaction(s) amended from 2,127,090 to 2,123,090. Securities Acquired (A) amended to Securities Disposed of (D), and Amount of Securities Beneficially Owned Following Reported Transaction(s) amended from 2,111,290 to 2,110,290. /s/ Arthur R. Guimaraes 2019-11-13