Video game publisher Midway Games ( MWY) said Monday its chief financial officer has resigned to "pursue other opportunities." Thomas Powell announced his resignation, effective Feb. 1, from his role as CFO, principal accounting officer and treasurer of the company. Powell's resignation comes barely a month after Midway elected Shari Redstone to the position of chairman of its board. Redstone, daughter of Midway's largest shareholder, Sumner Redstone, had been vice chairman earlier. Shares of Midway closed down 3 cents, or 1.2%, to $2.44. The stock has declined 30% over the past three months. The company said it has appointed Ryan O'Desky, the company's current vice president of finance, controller, and assistant treasurer as the interim CFO.