Certain Common Stock of Krystal Biotech, Inc. are subject to a Lock-Up Agreement Ending on 17-JAN-2019. These Common Stock will be under lockup for 91 days starting from 18-OCT-2018 to 17-JAN-2019.

Details:
The directors and executive officers have agreed that they will not offer for sale, contract to sell, sell, distribute, grant any option, right or warrant to purchase, pledge, hypothecate or otherwise dispose of, directly or indirectly, any shares of common stock or any securities convertible into, or exercisable or exchangeable for, shares of common stock, for a period of 90 days from the date of final prospectus without the prior written consent of Cowen and Company, LLC and William Blair & Company, LLC.