Twist Bioscience Corp

Our Board is currently comprised of eight members. Our amended and restated bylaws permit our Board to establish by resolution the authorized number of directors, and as of the date of the Annual Meeting, seven directors will be authorized, six of whom qualify as “independent” under the listing standards of the Nasdaq Stock Market. Our Board has appointed Dr. Leproust to serve as Chair of our Board, Mr. Chess to serve as our lead independent director and Mr. Chan to serve as our lead director for Corporate Responsibility.

Our Board is divided into three classes, with staggered three-year terms. Only one class of directors will be elected at each annual meeting of our stockholders, with the other classes of directors continuing for the remainder of their respective three-year terms.

Our directors are divided among the three classes as follows:

•the Class I directors are currently Messrs. Chan and Ragusa, Ms. Mai and Dr. Starovasnik and their terms will expire at the annual meeting of stockholders to be held in 2025. Ms. Mai’s term will expire at the Annual Meeting and she will cease to serve as a director following the Annual Meeting;

•the Class II directors are currently Messrs. Crandell and Johannessen, and their terms will expire at the annual meeting of stockholders to be held in 2026; and

•the Class III directors are currently Dr. Leproust and Mr. Chess, and their terms will expire at the annual meeting of stockholders to be held in 2027.

We continuously evaluate our director skill set and expertise for alignment with our strategic objectives. Our directors bring extensive expertise in areas that are important to Twist’s strategy, execution and long-term success. In addition, we strive to create and maintain a diverse Board as we respect the value that diverse life experiences bring to our Board and leadership.