Freddie Mac announced Wednesday that Ross J. Kari, the company’s chief financial officer, plans to retire in the second half of 2013, following his 55th birthday.

"Ross has been an invaluable asset to Freddie Mac, leading the company through some of its most important financial efforts, including the successful completion of the FAS 140 implementation and Sarbanes-Oxley compliance," said Chief Executive Officer Donald H. Layton. "He is a truly outstanding CFO and I greatly appreciate his ongoing commitment to the company, its mission and its people."

Kari will stay with Freddie Mac until a successor is named and the transition is complete.