X0306 4 2018-03-27 0 0001300699 Athenex, Inc. ATNX 0001708966 Trainor-Degirolamo Sheldon C/O ATHENEX, INC. 1001 MAIN STREET, SUITE 600 BUFFALO NY 14203 1 0 0 0 Common Stock 711333 I By PacBridge Partners V Investment Co Ltd. Stock Option (Right to Buy) 11.00 2027-06-13 Common Stock 19500 19500 D Stock Option (Right to Buy) 17.30 2018-03-27 4 A 0 19500 0.00 A 2028-03-27 Common Stock 19500 19500 D Stock Option (Right to Buy) 13.17 2029-02-28 Common Stock 17500 17500 D These shares are held for the account of PacBridge Partners V Investment Co Ltd. Sheldon Trainor-Degirolamo ("Mr. Trainor-Degirolamo") is the sole director and shareholder of PacBridge Partners V Investment Co Ltd. and has sole voting and dispositive power over the shares held by it. Mr. Trainor-Degirolamo disclaims beneficial ownership of the reported securities except to the extent, if any, of its or his pecuniary interest therein, and this report shall not be deemed an admission that Mr. Trainor-Degirolamo is the beneficial owner of the reported securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. The option vests in four equal annual installments beginning on June 13, 2018. This option vests in four equal annual installments beginning on March 27, 2019. The option vests in four equal annual installments beginning on February 28, 2020. /s/ Teresa Bair, Attorney-in-Fact 2019-03-05