LITTLE ROCK, Ark. — Data services company Acxiom said Wednesday its president and CEO, John Meyer, has resigned and that its chief financial officer, Christopher Wolf, plans to step down. The company also forecast a weaker than expected performance for its fourth quarter and said it will charge up to $90 million against earnings related to the valuation of its international operations. Acxiom said in a statement that Meyer's resignation was effective Monday and gave no reason for his departure. Meyer became president and CEO of Acxiom in February 2008. The company's board of directors named board member Jerry Gramaglia as interim CEO. Gramaglia has been on the company's board since 2009. He is a former president and chief operating officer of E-Trade Financial. The statement said Wolf, who has been with the company since 2007, plans to resign during the second quarter. Acxiom says Wolf indicated he wants to stop commuting to Little Rock from his home in Florida.