A look at the changes within the retailer's executive leadership.

Jan. 16: Shari Ballard is named president of Best Buy International; she was formerly co-president of North American operations.

March 8: Geek Squad founder and chief technology officer Robert Stephens leaves Best Buy to pursue opportunities in Silicon Valley.

March 10: Best Buy hires former Starbucks chief information officer Stephen Gillett as new digital chief.

April 10: CEO Brian Dunn resigns; company names board member G. "Mike" Mikan as interim CEO.

April 20: Best Buy says Rogelio Rebolledo will retire from board of directors in June.

May 2: Chief marketing officer Barry Judge resigns; company says Gillett will oversee global marketing.

May 5: Best Buy International CFO Dave Deno resigns to become CFO at OSI Restaurant Partners.

May 14: Company says founder and chairman Richard Schulze will relinquish his chairmanship in June and will step down from the board in 2013.

May 25: Best Buy senior vice president and domestic CFO Ryan Robinson resigns to join MedExpress.

Monday: Susan Marcinelli, senior vice president of innovation and leadership development, plans to step down, the company said.

Thursday: Schulze resigns as chairman and board director. He says he will explore "options" for his 20.1 percent stake in the company.