Rex Energy to Broadcast Its Second-Quarter 2008 Conference Call on the Web

Rex Energy Corporation (“Rex Energy”) (NASDAQ: REXX) will broadcast its second quarter 2008 earnings conference call live over the Internet on Wednesday August 6, 2008 at 10:30 a.m. Eastern time with Benjamin W. Hulburt, President and Chief Executive Officer, and Thomas Stabley, Executive Vice President and Chief Financial Officer.

This webcast can be accessed through the Company’s Web site, www.rexenergy.com. The webcast is also being distributed over CCBN’s Investor Distribution Network. Individual investors can listen to the webcast at www.fulldisclosure.com. Institutional investors can access the webcast via CCBN’s password-protected event management site, StreetEvents (www.streetevents.com).

About Rex Energy

Rex Energy is an independent oil and gas company operating in the Illinois Basin, the Appalachian Basin and the southwestern region of the United States. The Company pursues a balanced growth strategy of exploiting its sizable inventory of lower-risk developmental drilling locations, pursuing its higher-potential exploration drilling and enhanced oil recovery projects, and actively seeking to acquire complementary oil and natural gas properties.

For more information, contact: Joseph DeSimone, director of investor relations, at (814) 278-7129 or jdesimone@rexenergycorp.com