William 'Bill' Ackman, CEO and Portfolio Manager of Pershing Square Capital Management, speaks during the Sohn Investment Conference in New York City, U.S., May 8, 2017. REUTERS/Brendan McDermid

BOSTON (Reuters) - Billionaire investor William Ackman on Friday said his Pershing Square Capital Management hedge fund plans to nominate directors to, but not try to control, the 10-person board at payroll services company Automatic Data Processing Inc ADP.O.

Ackman said he sees an opportunity to improve operating performance at the company through “transformational” change and cost cutting, and that he is willing to work with existing management or a new chief executive from outside the company to push for those changes.