X0306 4/A 2018-04-23 2018-04-30 0 0001300699 Athenex, Inc. ATNX 0001290865 Zhang Song-Yi C/O ATHENEX, INC. 1001 MAIN STREET, SUITE 600 BUFFALO NY 14203 1 0 1 0 0001709068 Mandra Medical Ltd NEWHAVEN TRUSTEES (BVI) LTD., 3RD FLOOR J&C BUILDING, P.O. BOX 933, ROAD TOWN TORTOLA D8 VG1110 VIRGIN ISLANDS, BRITISH 0 0 1 0 0001709077 Beansprouts Ltd NEWHAVEN TRUSTEES (BVI) LTD., 3RD FLOOR J&C BUILDING, P.O. BOX 933, ROAD TOWN TORTOLA D8 VG1110 VIRGIN ISLANDS, BRITISH 0 0 1 0 0001709117 Mui Bing How Tammy C/O ATHENEX, INC., 1001 MAIN STREET SUITE 600 BUFFALO NY 14203 0 0 1 0 Common Stock 678880 I By Avalon Biomedical (Management) Limited Stock Option (Right to Buy) 9.00 2025-07-17 Common Stock 54904 54904 I By Avalon Biomedical (Management) Limited Mr. Zhang 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. Zhang 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. Avalon Biomedical (Management) Limited ("Avalon Biomedical") is an indirect, wholly-owned subsidiary of Avalon Global Holdings Limited ("Avalon Global"). Mr. Zhang, together with his spouse, indirectly owns all of the outstanding interests in Mandra Medical Limited, which owns 10.82% of the outstanding interests in Avalon Global, and Mr. Zhang serves on the board of directors of Avalon Global and has shared voting and dispositive power with respect to the shares held by Avalon Biomedical. The option vests in three equal annual installments beginning on July 17, 2016. This amendment is being filed only to correct the percentage of ownership of Avalon Global Holdings Limited by Mandra Medical Limited. Song-Yi Zhang, By: /s/ Teresa Bair, Attorney-in-Fact 2018-05-14 Mandra Medical Limited, By: Song-Yi Zhang, Director, By: /s/ Teresa Bair, Attorney-in-Fact 2018-05-14 Beansprouts Limited, By: Song-Yi Zhang, Director, By: /s/ Teresa Bair, Attorney-in-Fact 2018-05-14 Mui Bing How Tammy, By: /s/ Teresa Bair, Attorney-in-Fact 2018-05-14