X0306 4 2020-09-10 0 0001300699 Athenex, Inc. ATNX 0001314254 WU JINN C/O ATHENEX, INC. 1001 MAIN STREET, SUITE 600 BUFFALO NY 14203 1 0 0 0 Common Stock 2020-09-10 4 P 0 20000 11.15 A 391208 D Stock Option (Right to Buy) 4.55 2013-01-02 2023-01-02 Common Stock 40000 40000 D Stock Option (Right to Buy) 4.55 2014-02-12 2024-02-12 Common Stock 10000 10000 D Stock Option (Right to Buy) 5.50 2015-02-05 2025-02-05 Common Stock 54000 54000 D Stock Option (Right to Buy) 5.50 2017-03-20 2025-03-20 Common Stock 96000 96000 D Stock Option (Right to Buy) 11.00 2027-06-13 Common Stock 28500 28500 D Stock Option (Right to Buy) 17.30 2028-03-27 Common Stock 16500 16500 D Stock Option (Right to Buy) 13.17 2029-02-28 Common Stock 15000 15000 D Stock Option (Right to Buy) 12.45 2030-06-05 Common Stock 12500 12500 D This 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. This option vests in four equal annual installments beginning on February 28, 2020. This option vests in four equal annual installments beginning on June 5, 2021. /s/ Teresa Bair, Attorney-in-Fact 2020-09-11