On January 26, 2024, Mr. Samir Kaul notified the board of directors (the ?Board?) of Guardant Health, Inc. (the ?Company?) that he intends to resign as member of the Board and as a member of the compensation committee of the Board effective February 1, 2024. Mr. Kaul?s resignation is not the result of any dispute or disagreement with the Company or the Board on any matter relating to the operations, policies or practices of the Company. Effective upon Mr. Kaul?s resignation as a director, the size of the Board will be reduced from nine to eight directors.