LITTLETON, Colo., Sept. 7, 2011 (GLOBE NEWSWIRE) -- Innospec Inc. (Nasdaq:IOSP) today announced that its board of directors has approved an increase in the amount of shares that are subject to buy back under the company's stock repurchase program. The increased plan will permit the repurchase of shares of common stock in the open market in an aggregate of $40 million in 2011. Repurchases under the plan will continue to be made in compliance with Rules 10b5-1 and/or10b-18 and are expected to commence on September 12, 2011.