TORONTO, ONTARIO--(Marketwire - Aug. 23, 2012) - Sterling Group Partners I, L.P. ("SGP I LP") announced today that on August 20, 2012, SGP I LP distributed all of its 4,626,265 common shares in the capital of North American Energy Partners Inc. (the "Common Shares"), representing approximately 12.8% of the issued and outstanding Common Shares, to its limited partners and general partner in connection with the termination of the investment term of SGP I LP. As a result of this distribution SGP I LP holds no Common Shares.