Matt Schweitzer has been named director, content marketing, kids and events at Disney Publishing Worldwide. Previously he was senior v-p at HMH Books & Media.

Denise Morales Soto has joined Random House Children's Books as a bilingual copyeditor; previously she was a picture book editor at A Kids Book About.

Meghan O’Shaughnessy has been promoted to associate publicist at Workman Publishing, from publicity assistant.

Tiara Kittrell has joined Razorbill as editor; she was formerly associate editor at HarperCollins/Balzer + Bray.Simon & Schuster Children's Publishing has two new hires.

Mitch Thorpe has joined as senior manager of publicity; previously he was publicity manager at HarperCollins Children's Books. Thad Whittier has joined as publicity assistant.

Crystal McCoy has been named publicity manager at Disney Publishing Worldwide; previously she was senior publicity manager at Wattpad Bools.

Hannah Bowe has joined Bloomsbury US as assistant production editor in the children's managing editorial department; she was previously an assistant production editor at Questar Assessment.

Mary Joyce Perry has been promoted to senior digital marketing manager at Holiday House, Peachtree Publishing Company, and Pixel+Ink, from digital marketing manager.

Macmillan Children's Publishing Group has two promotions. Kelsey Marrujo has been promoted to assistant director, publicity, from publicity manager. Morgan Rath has been promoted to publicity manager, from senior publicist.

Jonah Heller has been promoted to editor at Peachtree Publishing Company, from associate editor.

Candlewick Press has one promotion and one new hire. Lauren Pettapiece has been promoted to senior designer and team leader of the Judy Moody and Stink series at Candlewick Press; previously she was a designer. Ryan Phung is joining Candlewick as production assistant; most recently he was a reviews department extern for Publishers Weekly.

Briana Williams has joined Bloomsbury Children's Books as marketing associate; previously she was cinema department assistant at the Speed Art Museum.

Sabrina Kenoun has joined HarperCollins Children's Books as associate publicist; most recently, she was an associate publicist at Sparkpoint Studio.

K.T. Horning will retire on July 1 from the Cooperative Children’s Book Center at the University of Wisconsin-Madison, where she has been director since 2002. She is a past president of ALSC and USBBY, and has chaired or severed on a number of children's book award committees. Her successor will be Tessa Michaelson Schmidt, most recently assistant state superintendent for the Division for Libraries and Technology in the Wisconsin Department of Public Instruction.

Lynn Hildebrandt will retire on May 31 from her position as sales director for Peachtree and Holiday House, after eight years with the company.

Maggie Salko has joined Little Bee Books as marketing coordinator.