As previously reported in the Current Report on Form 8-K filed with the U.S. Securities and Exchange Commission (the “SEC”) on November 21, 2022, by Imago BioSciences, Inc., (“Imago”), Imago entered into an Agreement and Plan of Merger, dated November 19, 2022, with Merck Sharp & Dohme LLC, a New Jersey limited liability company (“Merck”), and M-Inspire Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of Merck (“Merger Sub”). Following consummation of the Offer, the remaining conditions to the merger of Merger Sub with and into Imago (the “Merger”) set forth in the Merger Agreement were satisfied, and on January 11, 2023, Merck completed its acquisition of Imago by consummating the Merger without a meeting of stockholders of Imago in accordance with Section 251(h) of the General Corporation Law of the State of Delaware, with Imago continuing as the surviving corporation (the “Surviving Corporation”). As a result of the Merger, Imago became a wholly owned subsidiary of Merck.

Pursuant to the Merger Agreement, as of the Effective Time, Dennis Henner, Ph.D., Robert Baltera, M.S., Dina Chaya, Ph.D., Enoch Kariuki, Pharm.D., Hugh Y. Reinhoff, Jr., M.D. and Laurie Keating J.D. each ceased to be directors of Imago and members of any committee of Imago's board of directors. These changes were not a result of any disagreement between Imago and the directors on any matter relating to Imago's operations, policies or practices. Pursuant to the Merger Agreement, as of the Effective Time, the directors and officers of Merger Sub immediately prior to the Effective Time became the directors and officers of the Surviving Corporation.

The directors of Merger Sub immediately prior to the Effective Time were Rita A. Karachun, Jon Filderman and Aaron Rosenberg. The officers of Merger Sub immediately prior to the Effective Time were Rita A. Karachun, President, Jon Filderman, Vice President, Gary A. Henningsen, Jr., Senior Vice President – Tax, Aaron Rosenberg, Senior Vice President and Treasurer, Timothy G. Dillane, Assistant Treasurer, Juanita Lee, Assistant Treasurer, Kelly E.W. Grez, Secretary, Karen Ettelman, Assistant Secretary, Robert V. Smartwood, Assistant Treasurer and Anthony Wildasin, Assistant Secretary.