In a major shake-up, Zenith Media's U.S. president Wendy Marquardt is out, replaced by Dave Penski. Penski joined Zenith in 1999 as a print buyer and for the last five years has run the
shop's Verizon account. Marquardt, who joined Zenith in 1997, will remain a consultant to the shop for an unspecified period.
The agency also confirmed two senior promotions: Rob Jayson to president, strategy and Ava Jordhamo to president, execution. The agency says that Jones, Penski, Jayson and Jordhamo will form the executive leadership team for Zenith Media going forward.