X0206 3 2022-02-06 0 0001819493 Xos, Inc. XOS 0001909055 Romero Christen T C/O XOS, INC. 3550 TYBURN STREET, UNIT 100 LOS ANGELES CA 90065 0 1 0 0 General Counsel Common Stock 684831 D Includes 562,500 shares represented by restricted stock units ("RSU"). The RSUs vested as to 25% on December 10, 2021 and the remaining RSUs vest ratably on each of the next twelve (12) Quarterly Vesting Dates thereafter. "Quarterly Vesting Dates" mean each of March 10, June 10, September 10, and December 10, provided, however, that to the extent any such date occurs on a weekend day or U.S. federal holiday, the Quarterly Vesting Date will be deemed to occur on the immediately following day that is not a weekend day or U.S. federal holiday. /s/ Christen T. Romero 2022-02-16