Sean Desmond has been appointed v-p and publisher of Twelve. He has been editorial director since 2013 and earlier held editorial positions at Crown, St. Martin's Press, ICM and Norton.
Paul Samuelson has been promoted to publicity director, Twelve. He has been in the Twelve publicity group for four years, and joined the imprint from Random House.
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Effective June 6, Christina Loff is joining Chronicle Books as marketing director, adult trade. Most recently, she was the senior artist relations manager at Minted, and prior to that was a senior content marketing manager at CreativeLive.
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Gavin Caruthers has left Post Hill Press, where he was associate publisher, to continue his consulting work. He can be reached via e-mail.