The managing director of HarperCollins Children's division, Mario Santos (pictured), is to part company with the firm this summer to pursue other opportunities.
Santos' decision to leave at the end of June has prompted the publisher to reshuffle the division, with Ann-Janine Murtagh promoted to take overall leadership as publisher, Children's Books.
In addition to her publishing role, Murtagh will also assume responsibility for the business objectives of the division. She will report to Victoria Barnslet, CEO of HarperCollins UK and International.
Assisting with the running of the division will be Alison Ruane, who is promoted to associate publisher, while Geraldine Stroud becomes PR director.
All changes are effective from July 1st.
"Mario has led the team superbly over the last four years and we are sorry to see him go, but he leaves in place a very successful division and a fantastic leadership team to reall build on the last few years," said Barnsley. "Ann-Janine has a very strong team in Alison and Geraldine and I am confident they will continue to grow this thriving part of the business."
Santos added: "I will always be grateful to have had the chance to play a part in the huge successes that we have enjoyed over the last four years, but most of all to have been able to work with and lead some of the most talented and committed people in publishing."