AAF—The American Advertising Federation announced that James Datri will become president-CEO, effective Nov. 1. He will succeed Wallace Snyder, who is retiring. Datri is currently a partner in the law firm McDermott Will & Emery.

OMD—Media agency OMD has named Alan Cohen U.S. CEO, effective June 1. Cohen was previously president of media company Initiative’s western region. In his new role, Cohen will lead U.S. operations at the Omnicom agency and report to North American CEO Page Thompson.

Arends—Branding agency Arends announced that Ken Jackson has been named president. Jackson was previously VP-creative director. He succeeds John Arends, previously president-CEO, who will continue as CEO. Jackson will oversee the day-to-day operations of the agency.