This is a securities class action on behalf of all purchasers of SemGroup Energy Partners, L.P. common units between July 17, 2007 and July 17, 2008, against SGLP and certain of its officers and directors for violations of the Securities Exchange Act of 1934, and on behalf of all purchasers of SGLP's common units acquired pursuant and/or traceable to the Registration Statement and Prospectus issued in connection with the Partnership's Initial Public Offering completed on or about July 23, 2007, as well as all purchasers of SGLP common units acquired pursuant an/or traceable to the Registration Statement and Prospectus issued in connection with the Partnership's Secondary Offering completed on or about February 20, 2008, seeking to pursue remedies under the Securities Act of 1933.

The Registration Statements and Prospectuses issued in connection with the IPO and Secondary Offering were materially false and misleading, and/or omitted material information necessary to make the statements made, in light of such material omission, not materially false and misleading.

In addition, during the Class Period, a continued course of conduct was undertaken that operated as fraud and deceit upon plaintiff and the Class. Various untrue and/or misleading statements of material facts were made, and material facts necessary in order to make the statements not misleading, were omitted. The various statements and/or omissions made during the Class Period were made with a severely reckless disregard for the truth and were intended to, and did, deceive the investing public, including plaintiff and other Class members.