| Type | Filed | Filer | Subject | Shares Owned | Percent Owned | |
|---|---|---|---|---|---|---|
| SC 13G | 2013-02-13 | PRICE T ROWE ASSOCIATES INC /MD/ | WPX ENERGY, INC. | 10,040,448 | 5.0% | EDGAR |
| SC 13G | 2013-02-12 | VANGUARD GROUP INC | WPX ENERGY, INC. | 11,803,316 | 5.9% | EDGAR |
| SC 13G | 2013-01-30 | FRANKLIN MUTUAL ADVISERS LLC | WPX ENERGY, INC. | 14,249,393 | 7.2% | EDGAR |
| SC 13D/A | 2012-01-05 | WPX ENERGY, INC. | APCO OIL & GAS INTERNATIONAL INC | 20,301,592 | 69.0% | EDGAR |