Grand Central Publishing president and publisher Jamie Raab and Deb Futter, v-p and editor-in-chief of hardcovers at GCP and publisher of Twelve Books, will both leave the company at the end of January, according to a letter from Hachette Book Group CEO Michael Pietsch to the company.

Raab will leave GCP after 30 years with the company and 18 years as its publisher. Raab has overseen changes at the publisher including the division rebranding after Hachette Livre's acquisition of the Time Warner Book Group and the launch of Twelve Books, and has been both editor and publisher for authors including Sandra Brown, Stephen Colbert, Nelson DeMille, Amy Sedaris, Nicholas Sparks, and Jon Stewart.

“I’ve had a terrific career here, and after a three-decade tenure, the time seems right to step down,” Raab said in a statement. “It’s very tough to say farewell to colleagues and authors I admire and have loved working with, but change is always energizing, and the prospect of new adventures and opportunities is alluring."

Pietsch said a search for Raab's successor is "underway," and an announcement will be announced soon.

Futter joined GCP in 2007, and has worked with authors including Ellen DeGeneres, Steve Martin, and Noah Hawley. She was named publisher of Twelve in 2013.

In his employee letter, Pietsch acknowledged that the dual announcements are “a lot of change at once,” before adding: ”I want to assure you of HBG’s unwavering commitment to a separate and successful GCP. GCP is having a strong year with tremendous bestsellers.”

“HBG is a home for strong, independent divisions whose Publishers lead distinct editorial, marketing, and publicity teams," he continued. "I look forward to introducing a new Publisher and Editor-in-Chief for GCP shortly.”