Karen Kosztolnyik has been named executive editor at Simon & Schuster’s Gallery Books imprint. Kosztolnyik will report to editor-in-chief Jen Bergstrom and acquire commercial fiction, narrative nonfiction and memoir genres.

Kosztolnyik started her publishing career at John Wiley & Sons and then spent six years at Harlequin/Silhouette. She has served as an editor at Grand Central Publishing for nearly a decade.

Here’s more from the release: “During her distinguished tenure, Karen edited a wide variety of New York Times bestsellers, including the phenomenally successful Dewey by Vicki Myron & Bret Witter, which hit #1 and was on the list for 30 weeks, Silent Scream by Karen Rose, Lethally Blond by Cosmopolitan editor-in-chief Kate White, and On the Line by Serena Williams.”