Acxiom, the Little Rock-based data management company, has announced early this morning the resignation of its CEO, John Meyer. An interim leader, Board member Jerry Gramaglia, was named while the company searches for a successor.

No reason was given. But the news release includes negative news: a write-down of the value of international operations, somewhere between $50 and $90 million. This will affect reported earnings.

Full release here.

Also, Christopher Wolf plans to resign as chief financial officer to “spend more time with his family.”

UPDATE: The stock is getting hammered, down as much as 25 percent in morning trading.