There's going to be a new voice on Apple earnings calls soon.
Apple announced Tuesday morning that CFO Peter Oppenheimer will retire at the end of September. He will be replaced by Luca Maestri, who currently serves as the company's VP of finance and corporate controller.
See also: Apple: What to Expect in 2014
Oppenheimer joined Apple in 1996 as a controller for the Americas and took over the CFO position a decade ago. In that time, Apple's annual revenue has grown more than twenty times to $171 billion in 2013. Yet, Apple's relationship with Wall Street has been mixed, to say the least, in the last year or so of his tenure as some investors question Apple's pace of innovation and the way it uses its massive cash pile, among other things.
In a statement, Apple CEO Tim Cook praised Oppenheimer for his "leadership and experience" as CFO and "in many areas beyond finance." Cook also noted a personal friendship between the two.
“Peter is also a dear friend I always knew I could count on," Cook said in the statement. "Although I am sad to see him leave, I am happy he is taking time for himself and his family. As all of us who know him would have expected, he has created a professional succession plan to ensure Apple doesn’t miss a beat.”
Oppenheimer won't be completely retired, though. He recently joined the board of directors at Goldman Sachs. He also plans to become more involved at his alma mater, California Polytechnic State University. For the most part, his plan is to spend more time with family, travel and, apparently, become a pilot.
As CFO, Oppenheimer was a member of Apple's small, top executive team. Bob Mansfield, another member of the team, had tried to retire in 2012, but was convinced to stay on in a different role at the company.
Just for the heck of it, here's a video of Oppenheimer talking about Apple's new campus during a press conference late last year:

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