Fourth Quarter Adjusted Net Income Totals $420.8 Million, or $1.14 per Diluted Share

Proved Reserves Total 1.35 Billion Boe at Year-End 2014, a 25% Increase over Year-End 2013

Third Quarter 2014 EBITDAX of $948 Million; Adjusted Net Income Totaled $301 Million, or $0.81 per Diluted Share

Completions Confirm Strong Productivity in Recently Announced Discovery

Earnings Conference Call Scheduled for Thursday, November 6, 2014 at 12:00 p.m. ET

Bakken Net Unrisked Resource Potential Totals 4.1 Billion Boe, More Than 17x Greater than Current Bakken Proved Developed Reserves

Record EBITDAX of $868 Million; Adjusted Net Income Totaled $277 Million, or $1.50 per Diluted Share

Conference Call to Start One Hour Later at 12:00 p.m. ET on Wednesday, August 6, 2014

Earnings Conference Call Scheduled for Wednesday, August 6, 2014 at 11:00 a.m. ET

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