Xos Inc

Temporary Modifications to Compensatory Arrangements with Certain Named Executive Officers

In connection with management’s efforts to reduce operating costs in order to conserve financial resources, Xos’s Chief Executive Officer and Chief Operating Officer accepted temporary reductions in their annual base salaries of approximately 50%, and Xos’s Chief Legal Officer accepted a temporary reduction in his annual base salary of approximately 20%, in each case effective as of October 28, 2024. The timing of any restoration of the base salaries will be based on evolving business and economic conditions and will be made in consultation with, and pursuant to the consent of, the Board of Directors.

Rule 10b5-1 Plan Adoptions and Modifications

Except as set forth in the following paragraph, during the fiscal quarter ended September 30, 2024, no director or officer adopted orterminated any “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement” (as such terms are defined under Item 408(a) of Regulation S-K).

On September 12, 2024, Christen Romero, our Chief Legal Officer, entered into a Rule 10b5-1 trading arrangement (the “Romero Trading Arrangement”) with respect to the potential sale of up to an aggregate of 165,000 shares of Xos Common Stock, that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) under the Exchange Act. Orders under the Romero Trading Arrangement will be effective no earlier than December 12, 2024, and will be executed or cancelled by December 10, 2025 at the latest.