X0206 3 2020-07-16 0 0001810182 ALX ONCOLOGY HOLDINGS INC ALXO 0001777517 Graham G. Walmsley C/O LOGOS GLOBAL MANAGEMENT, LP 1 LETTERMAN DRIVE, BLDG D, SUITE D3-700 SAN FRANCISCO CA 94129 1 0 0 0 Series C Convertible Preferred Stock Common Stock 2105901 I See footnote Each share of Series C Convertible Preferred Stock shall automatically convert into Common Stock on a 1:1 basis immediately prior to the completion of the Issuer's initial public offering of Common Stock and has no expiration date. The shares are held of record by Logos Opportunities Fund I, L.P. (LOF I LP). As a managing member of Logos Opportunities GP, LLC, the general partner of LOF I LP, the reporting person shares voting and dispositive power with respect to the shares held of record by LOF I LP but disclaims beneficial ownership of such shares except to the extent of his individual pecuniary interest therein. Exhibit 24 - Power of Attorney /s/ Peter Garcia, by power of attorney 2020-07-16