John Sargent was raised on a ranch in Wyoming. He worked at three different publishers before going to Simon and Schuster to run the children's book division at the age of twenty-nine. He spent six years there, followed by three years as the CEO of DK Publishing. In 1996, he went to work as the CEO of St Martin's Press. Three years later, he was put in charge of Holtzbrinck's US publishers and was responsible for forming the company that is today's Macmillan. He worked there as CEO until the end of 2020. He serves on three nonprofit boards. He's been married to Connie Sargent for thirty-seven years, and they have two children.