Xos, Inc.

(c)

During our last fiscal quarter, except as set forth below, none of our directors or officers, as defined in Rule 16a-1(f), adopted orterminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement,” each as defined in Item 408 of Regulation S-K.

On May 26, 2026, Dakota Semler, our Chief Executive Officer and chairman of our board of directors, terminated the previously disclosed Rule 10b5-1 trading arrangement, adopted December 30, 2025, with respect to the potential sale of up to an aggregate of 245,000 shares of our Common Stock, that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act.

On June 30, 2026, Giordano Sordoni, our Chief Operating Officer and a member of our board of directors, entered into a Rule 10b5-1 trading arrangement (the “Sordoni Arrangement”) with respect to the potential sale of up to an aggregate of 883,125 shares of our Common Stock, that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. Orders under the Sordoni Arrangement will be effective no earlier than September 29, 2026, and will be executed or cancelled by July 1, 2027 at the latest.