On March 26, 2021, William J. Sandbrook announced the U.S. Concrete, Inc. that he will retire from the Board at the company’s 2021 annual meeting of stockholders (the “2021 Meeting”) and will not stand for re-election at the 2021 Meeting. Mr. Sandbrook previously served as the company’s Chairman of the Board from May 2018 through May 14, 2020, as the company’s Chief Executive Officer and director from August 2011 through April 3, 2020, and as the company’s President from August 2011 until April 2019. There are no disagreements between Mr. Sandbrook and the company on any matter relating to the company’s operations, policies or practices. Mr. Sandbrook entered into an Executive Transition Agreement with the company, dated February 13, 2020 (the “Executive Transition Agreement”), and effective as of April 3, 2020, in connection with his retirement as the company’s Chief Executive Officer. Mr. Sandbrook and the Company have extended the Executive Transition Agreement through April 2, 2023 (the “Transition Period”), pursuant to an amendment to the Executive Transition Agreement dated March 26, 2021.