On February 16, 2021, the Registration Statement on Form S-1 (File No. 333-252435) (the Registration Statement) relating to the initial public offering (the IPO) of FS Development Corp. II (the Company) was declared effective by the U.S. Securities and Exchange Commission, and the Company subsequently filed, on February 16, 2021, a registration statement on Form S-1 (File No. 333-253182) pursuant to Rule 462(b) under the Securities Act of 1933, as amended, which was effective immediately upon filing in order to increase the size of the IPO. On February 17, 2021, in connection with the IPO, Dr. Dan Dubin, Mr. Owen Hughes, Ms. Alisa Mall and Dr. Deepa Pakianathan (collectively, the Directors) were appointed to the board of directors of the Company . The Directors are independent directors. Effective February 17, 2021, Dr. Dubin, Mr. Hughes and Dr. Pakianathan were also appointed to the Board's (i) Audit Committee, with Mr. Hughes serving as chair of the Audit Committee, (ii) Compensation Committee, with Dr. Dubin serving as chair of the Compensation Committee, and (iii) Nominating and Corporate Governance Committee, with Dr. Pakianathan serving as chair of the Nominating and Corporate Governance Committee.