X0306 4 2020-07-20 0 0001760542 HOOKIPA Pharma Inc. HOOK 0001734412 Aldag Jorn C/O HOOKIPA PHARMA INC., 350 FIFTH AVENUE, 72ND FLOOR, SUITE 7240 NEW YORK NY 10118 1 1 0 0 Chief Executive Officer Common Stock 2020-07-20 4 A 0 4128 0 A 4128 D The Reporting Person was awarded 4,128 restricted stock units. Each restricted stock unit represents a contingent right to receive one share of HOOKIPA Pharma Inc.'s Common Stock. The restricted stock units vest shall vest in four equal installments on March 20, 2021, May 15, 2021, August 15, 2021 and November 15, 2021. The restricted stock units may be settled only by delivering shares of HOOKIPA Pharma Inc.'s Common Stock, and thus, the grant is being reported in Table 1 as allowed per SEC guidance. /s/ Reinhard Kandera, as Attorney-in-Fact 2020-07-22