- June 2007: Sold legacy Hansford County, Texas area production and acreage to Laredo Petroleum Company.
- July 2008: Sold Shattuck field assets to Noble Energy, Inc.
- January 2010: Acquired Crusader Energy. Click here for more details.
- April 2011: Acquired producing properties and entered into a joint venture with Southridge Energy and Pablo Energy. Click here for more details.
- December 2012: Acquired interest in oil properties in Texas Panhandle. Click here for more details.
