ASLAN PHARMACEUTICALS PTE LTD (Reg. No. ​), a company incorporated in Singapore with a business address at UE Square (West Wing), 83 Clemenceau Avenue, #12-03, Singapore 239920 (“Company”),

ELOXX PHARMACEUTICALS, LTD.

​ # PTE. LTD.

“Sponsors” means Catterton Management Company, L.L.C. and ​ Investment Pte Ltd, a Singapore private limited company, the respective general partners of the constituent owners of, Catterton Management Company, L.L.C. and ​ Investment Pte Ltd, and any Affiliate of such owners or their respective general partners (other than portfolio companies of Catterton Management Company, L.L.C. and ​ Investment Pte Ltd).

Mold-Tech Singapore Pte. Ltd.

Wave Life Sciences Pte Ltd

Company Name: Bitmain Development PTE LTD

MIZUHO BANK, LTD. as facility agent (the "Facility Agent").

Reference is made to that certain License, Development and Commercialization Agreement (the “License Agreement”) between Syndax Pharmaceuticals, Inc. (“Syndax”) and Kyowa Hakko Kirin Co., Ltd. (“KHK”), which the parties have executed on the date of this letter. Any capitalized terms used below that are not defined herein shall have the same meaning as set forth in the License Agreement.

Oki Electric Industry Co., Ltd. (the “Seller”), Mold-Tech Singapore PTE LTD (the “Purchaser”), a wholly owned subsidiary of ​ and ​ (the “Purchaser Guarantor”) execute this Share Purchase Agreement (this “Agreement”) on ​ (the “Execution Date”) regarding the transfer to the Purchaser of all of the issued and outstanding common shares of Oki Sensor Device Corp. (the “Target Company”) held by the Seller as follows.