| Filed On | Filing |
|---|---|
| 05 Aug 2015 |
Form 3/A: Plank Roger B, Director
Holds 5,600 shares of common stock |
| 18 Jun 2008 |
Form 3/A: Bernhardt Mona Leigh, Vice President-Human Resources
Holds 1,055 shares of Common Stock |
| 27 Dec 2005 |
Form 3/A: Bernhardt Mona Leigh, Vice President-Human Resources
Holds 29,716 shares of common stock |
| 19 Dec 2005 |
Form 3/A: Metcalf James J, Vice President - Drilling
Holds 54,965 shares of common stock |
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