X0306 4 2019-06-13 0 0001113148 INFINITY PHARMACEUTICALS, INC. INFI 0001244822 BLOCH LAWRENCE E C/O INFINITY PHARMACEUTICALS, INC. 784 MEMORIAL DRIVE CAMBRIDGE MA 02139 0 1 0 0 President Stock Option (right to buy) 1.24 2019-06-13 4 A 0 100000 0.00 A 2029-01-03 Common Stock 100000 100000 D This option was approved by the Compensation Committee of the Board of Directors of Infinity Pharmaceuticals, Inc., on January 4, 2019, contingent upon shareholder approval of the Company's 2019 Equity Incentive Plan under which the options were granted, which was approved by shareholders on June 13, 2019. The option vests as to 1/48th of the shares on January 31, 2019 and vests as to 1/48th of the shares at the end of each calendar month thereafter. /s/ Lawrence E. Bloch 2019-06-13