X0306 4 2020-07-20 0 0001760542 HOOKIPA Pharma Inc. HOOK 0001441261 SOFINNOVA CAPITAL VI FCPR C/O HOOKIPA PHARMA INC., 350 FIFTH AVENUE, 72ND FLOOR, SUITE 7240 NEW YORK NY 10118 0 0 1 0 0001574139 Sofinnova Partners SAS C/O HOOKIPA PHARMA INC., 350 FIFTH AVENUE, 72ND FLOOR, SUITE 7240 NEW YORK NY 10118 0 0 1 0 Common Stock 2020-07-20 4 S 0 12483 11.9444 D 3948091 D Shares sold pursuant to a Rule 10b5-1 trading plan previously adopted by the Reporting Person. The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $11.75 to $12.23, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range. Sofinnova Partners SAS is the managing company of Sofinnova Capital VI FCPR and disclaims beneficial ownership of these shares except to the extent of its pecuniary interest therein, if any. /s/ Monique Saulnier, Name: Monique Saulnier, Title: Managing Partner of Sofinnova Partners SAS 2020-07-22