Dawson Geophysical Company

Dawson Geophysical Reports Fiscal Fourth Quarter and Year-End Results 2011— Headline published on November 9, 2011

Dawson Geophysical Announces Termination of Merger Agreement— Headline published on October 28, 2011

Dawson Geophysical and TGC Industries Announce Merger Update— Headline published on October 24, 2011

Dawson Geophysical and TGC Industries Announce Closing of the DOJ Investigation and Early Termination of Hart-Scott-Rodino Waiting Period— Headline published on September 6, 2011

Scientific, Technical & Medical Information: 2009 Final Market Size and Share Report— Report published on July 28, 2010

Geokinetics Acquires Onshore Multi-Client Library— Insight published on February 22, 2010

Scientific, Technical & Medical Information: 2008 Final Market Size and Share Report— Report published on July 13, 2009

Scientific, Technical & Medical Information: 2007 Final Market Size and Share Report— Report published on October 17, 2008

Scientific, Technical & Medical Information: 2007 Market Forecast and Trends Report— Report published on September 21, 2007