SandRidge Mississippian Trust I - 2011-04-13

Closed an initial public offering of 17.25 million common units, including 2.25 million common units sold pursuant to the exercise of the underwriters' over-allotment option. Net proceeds to the trust, before offering expenses, were approximately $338.7 million, which proceeds were delivered to SandRidge Energy Inc. as partial consideration for the conveyance of the royalty interests held by the trust. Raymond James & Associates Inc. and Morgan Stanley & Co. Inc. were joint book-running managers. Wells Fargo Securities LLC and RBC Capital Markets LLC were co-lead managers, and Oppenheimer & Co. Inc., Madison Williamsand Co. LLC, Morgan Keegan& Co. Inc., Robert W. Baird & Co. Inc. and Wunderlich Securities Inc. were co-managers.