SAN FRANCISCO — Less than a month after Cooley Godward Kronish lost a trio of high-profile deal lawyers to Dewey & LeBoeuf, another partner has left for another New York-based firm.

James Donato, an antitrust lawyer and past president of the Bar Association of San Francisco , joined Shearman & Sterling’s San Francisco office as a partner Monday. The firm announced the hire along with three other lateral additions in its Washington, D.C., office.