John Malone’s Liberty Media will see a change in some of its top positions on October 1. Chief Development Officer Mark Carleton will become CFO, replacing Christopher Shean, who moves to Senior Advisor overseeing what Liberty describes as some of its “significant investments.”

Albert Rosenthaler moves from Chief Tax Officer into Carleton’s current slot as Chief Development Officer. All will report to CEO Greg Maffei. The changes “will benefit the organization,” he says.

Liberty controls SiriusXM and the Atlanta Braves. It’s also at the center of Malone’s complicated empire which includes major investments in companies including Charter Communications, Starz, Live Nation Entertainment, QVC, and LendingTree.

Prior to joining Liberty in 2003 Carleton was a partner and National Industry Director of the Communications Segment at accounting firm KPMG, where he also was on the board of directors.

Shean became CFO in 2011, and joined the Malone empire in 2000.

In his new job, Rosenthaler will look for business and investment opportunities, and oversee the senior tax officer — an important job for Malone, who’s famous for making convoluted deals designed to minimize his tax payments. Rosenthaler became Chief Tax Officer in January after working at various jobs at Liberty since 2002. Before joining the company he was a tax partner at Arthur Andersen.