Certain Warrants of Constellation Pharmaceuticals, Inc. are subject to a Lock-Up Agreement Ending on 15-JAN-2019. These Warrants will be under lockup for 181 days starting from 18-JUL-2018 to 15-JAN-2019. Details: The company, and each of executive officers and directors and the holders have agreed that during the period ending 180 days and they will not, offer, pledge, sell, contract to sell, sell any option or contract to purchase, purchase any option or contract to sell, grant any option, right or warrant to purchase or otherwise transfer or dispose of, directly or indirectly any shares of common stock or any securities convertible into or exercisable or exchangeable for any shares of common stock without the prior written consent of J.P. Morgan Securities LLC and Jefferies LLC.