Express ScriptsHolding Co. Inc. has appointed Timothy Wentworth president and CEO,according to a regulatory filing.

The appointment is effective immediately. George Paz, his predecessor,retired May 4 and will remain chairman of the board. He will continue to be an employeethrough June 1.

In addition, director Gary Benanav retired and resigned fromthe board May 4.

Separately, the company disclosed in the filing that a stockholderproposal regarding an independent board chairman was defeated at a recent annualmeeting.