First Quarter 2014 Adjusted Net Income Totals $272 Million, or $1.47 per Diluted Share; First Quarter 2014 EBITDAX of $775 Million

Earnings Conference Call Scheduled for Thursday, May 8, 2014 at 11:00 a.m. ET

Fourth Quarter Adjusted Net Income Totals $228.1 Million, or $1.23 per Diluted Share

1.08 Billion Boe in Proved Reserves at Year-End 2013, a 38% Increase over Year-End 2012

Hawkinson Unit Density Test Produces at an Initial Combined Rate of 14,850 Boe per Day from Middle Bakken and Three Forks Benches One, Two and Three

Earnings Conference Call Scheduled for Thursday, November 7, 2013 at 10:00 a.m. CT

Company Expects Production Increase of 26% to 32% in 2014

Conference Call Scheduled to Follow

Record Production Totaling 135,700 Boe per Day for Second Quarter 2013, an Increase of 12% Sequentially and 43% Compared to Second Quarter 2012

Earnings Conference Call Scheduled for Thursday, August 8, 2013 at 10:00 a.m. CT

Record Production Totaling 121,500 Boe per Day for First Quarter 2013, an Increase of 14% Sequentially and 42% Compared to First Quarter 2012

Earnings Conference Call Scheduled for Thursday, May 9, 2013 at 9 a.m. CT

Record Fourth Quarter EBITDAX of $594.5 Million Is 44 Percent Higher Than Final Quarter of 2011