OKLAHOMA CITY -- SandRidge Mississippian Trust II announced today that it has closed its initial public offering of 29,900,000 common units, including 3,900,000 common units sold pursuant to the exercise of the underwriters' over-allotment option, representing a 60% beneficial interest in the Trust. SandRidge Energy Inc. (NYSE: SD) as sponsor of the Trust, owns approximately 7.4 million common units and approximately 12.4 million subordinated units convertible into common units.  The Trust has a total of 49,725,000 trust units outstanding. The common units trade on the New York Stock Exchange under ...