Shearman & Sterling represented Morgan Stanley and Griffiths McBurney Corp. as joint bookrunning managers and representatives of the several underwriters in connection with Athabasca Oil Sands Corp.’s C$1.35 billion initial public offering of common shares in Canada and Rule 144A private placement in the United States. The offering is Canada’s largest IPO since 1999 and the largest IPO in North America this year. The shares will be listed on the Toronto Stock Exchange under the symbol “ATH”.

Athabasca Oil Sands Corp. is an Alberta corporation focused on the exploration for, and the development and production of, bitumen from oil sands using in-situ extraction technologies in the Athabasca region of northeastern Alberta, Canada.