X0306 4 2017-08-16 0 0001372299 HISTOGENICS CORP HSGX 0001106519 GILL DAVID N C/O HISTOGENICS CORPORATION 830 WINTER STREET. 3RD FLOOR WALTHAM MA 02451 1 0 0 0 Common Stock 2017-08-16 4 P 0 3000 1.813 A 14000 D The price reported in Column 4 is a weighted average price. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer or the staff of the Securities Exchange Commission, upon request, full information regarding the number of shares sold at each separate price. /s/ David N. Gill 2017-08-17