SandRidge Energy, Inc., the sponsor of the SandRidge Mississippian Trust I, announced that it will host a conference call on August 12th at 8:00 am CDT. The call information is 1-800-561-2693 (domestic) or 1-617-614-3523 (international). The participant code for both numbers is 96166705. The call may also be accessed via the internet at http://phx.corporate-ir.net/playerlink.zhtml?c=247447&s=wm&e=4155857. A replay of the call can be accessed from August 12, 2011 (11:00 AM, EDT) through August 19, 2011 (11:59 PM, EDT) by calling 1-888-286-8010 (domestic) or 1-617-801-6888 (international). The participant code for both replay lines is 51412017.This press release contains statements that are "forward-looking statements" within the meaning of Section 27A of the Securities Act of 1933, as amended, and Section 21E of the Securities Exchange Act of 1934, as amended. All statements contained in this press release, other than statements of historical facts, are "forward-looking statements" for purposes of these provisions. These forward-looking statements include the amount and date of any anticipated distribution to unit holders. The anticipated distribution is based, in part, on the amount of cash received or expected to be received by the Trust from SandRidge with respect to the relevant period. Any differences in actual cash receipts by the Trust could affect this distributable amount. Other important factors that could cause actual results to differ materially include expenses of the Trust and reserves for anticipated future expenses. Statements made in this press release are qualified by the cautionary statements made in this press release. Neither SandRidge nor the Trustee intends, and neither assumes any obligation, to update any of the statements included in this press release. An investment in Common Units issued by SandRidge Mississippian Trust I is subject to the risks described in the Trust's Quarterly Report on Form 10-Q for the quarter ended March 31, 2011, and all of its other filings with the Securities and Exchange Commission (“SEC”). The Trust's quarterly and other filed reports are or will be available over the Internet at the SEC's web site at http://www.sec.gov.