Formula One has confirmed its managing director of commercial operations, Sean Bratches, will leave his role at the global motorsport series at the end of January, confirming reports dating back to September that his future was uncertain.
Bratches, 59, is leaving to spend more time with his family but will continue to have an advisory role at Formula One.
After departing his role as executive vice president of sales and marketing at ESPN, where he spent 27 years, Bratches was appointed managing director of commercial operations when Liberty Media took over Formula One in January 2017 as part of a three-man management team alongside chief executive Chase Carey and technical director Ross Brawn.
Focused on growing income from race hosting fees, sponsorship and broadcasting deals, Bratches has worked from the series' headquarters in London, as well as travelling to races, spending a lot of time apart from his family in Connecticut.
"The past three years at Formula One have been an incredible journey, one which I have enjoyed thoroughly," said Bratches. "I want to personally thank the team at F1 for their extraordinary efforts and dedication, they are the best of the best and I am confident they will continue to serve fans and deliver on the strategy we have set in the years ahead.
"I am proud that I leave F1 in a better position than when I joined in 2017 and I know that the foundation we have put in place as a team will continue to serve our fans around the world and reach new audiences."
Carey said: "Sean has transformed the commercial side of F1 and a testament to his work is shown in our momentum and growth as a business.
"I am pleased Sean will continue to be an advisor for us from his home in the US, he will always be part of the F1 family and I look forward to his ongoing advice and counsel."