X0306 4 2022-01-10 0 0001819493 Xos, Inc. XOS 0001136701 ANSARI ANOUSHEH C/O XOS, INC. 3550 TYBURN STREET, UNIT 100 LOS ANGELES CA 90065 1 0 0 0 Restricted Stock Unit 2022-01-10 4 A 0 88060 A Common Stock 88060 88060 D Restricted Stock Unit 2022-01-10 4 A 0 48922 A Common Stock 48922 48922 D The price is N/A. The restricted stock units vest in a series of three equal annual installments on each of the first, second and third year anniversaries of the grant date of January 10, 2022 (the "Grant Date"), subject to such individual's continuous service with Xos, Inc. through such vesting date. Date is N/A. The restricted stock units vest on the earlier of (i) the first anniversary of the Grant Date and (ii) the day before the next annual meeting of Xos, Inc. following the Grant Date, subject to such individual's continuous service with Xos, Inc. through the vesting date. /s/ Kim Merritt, Attorney-in-Fact for Anousheh Ansari 2022-01-11