Ginee Seo, v-p and editorial director of Ginee Seo Books, an imprint of Atheneum Books for Young Readers at Simon & Schuster, has resigned from her position with the publisher, according to an internal memo sent earlier this week by Atheneum v-p and publisher Emma Dryden.

Seo joined Atheneum in 2000 as v-p and associate publisher and launched her eponymous imprint in 2005 with Totally Joe by James Howe and Inexcusable by Chris Lynch, a National Book Award finalist. More recent titles from Ginee Seo Books include the Bob Dylan picture book Forever Young, illustrated by Paul Rogers; and Nic Sheff’s bestselling memoir Tweak: Growing Up on Methamphetamines.

Seo’s last day in the office will be October 30, but she will continue to work with S&S on a freelance basis on the titles that were to have been published by her imprint in 2009 and 2010; those books will be published as Atheneum titles.

The past year has seen several changes at editor-driven children’s imprints at major houses, including the resignations of Laura Geringer and Joanna Cotler from their eponymous imprints at HarperCollins, as well as the formation of two new imprints, HarperCollins’s Bowen Press, headed by Brenda Bowen, and S&S’s Beach Lane Books, with Allyn Johnston at the helm.