Just weeks after AMD revealed its plans for its next CPU refresh, Steamroller, the company has taken a significant financial hit. It comes on Monday, in the aftermath of the imminent departure of AMD's chief financial officer, Thomas Seifert.

“Seifert’s departure is not based on any disagreement over the company’s accounting principles or practices, or financial statement disclosures,” AMD said in the statement.

Seifert will leave the company on September 28 after three years of service. He had been viewed as a bulwark against the company’s many struggles in recent years.

AMD has about 20 percent of the processor market overall, which has been bolstered by its 2006 acquisition of ATI Technologies. The company has been focusing its corporate strategy in recent years on adapting ATI’s GPU background to its own CPU architecture.

"Thomas leaving is a big deal. He was pretty well-liked by investors. He was viewed as he rock throughout all the changes," Evercore Partners analyst Patrick Wang told Reuters.

As a result, AMD’s stock has taken a hit, falling by as much as 12 percent in after-hour trading.