Shearman & Sterling represented RBC Capital Markets, LLC and Morgan Stanley & Co. LLC, as joint bookrunning managers, and HSBC Securities (USA) Inc., AltaCorp Capital (USA) Inc. and CIBC World Markets Corp., as co-managers, in connection with a Rule 144A/Regulation S add-on offering of $150 million aggregate principal amount of 7.50% senior notes due 2020 by Calfrac Holdings LP.

Calfrac provides specialized oilfield services to exploration and production companies designed to increase the production of hydrocarbons from wells drilled throughout western Canada, the United States, Russia, Mexico and Argentina.

The following Shearman & Sterling team advised the initial purchasers in the transaction: partners Jason Lehner (New York/Toronto-Capital Markets) and Laurence Crouch (Palo Alto-Tax), counsel Jeffrey Salinger (New York-Real Estate/Environmental) and associates Kevin Roggow (Toronto-Capital Markets), Joe Tucci (Palo Alto-Tax), Ana Aur (New York-Capital Markets), Laura Mulry (New York- Real Estate/Environmental) and Bilal Choksi (Toronto-Capital Markets).