Chord Energy Corp — Director's Dealing 2011

Aug 29, 2011

SEC Form 3 — Initial Statement of Beneficial Ownership

Issuer: Oasis Petroleum Inc. (OAS)
CIK: 0001486159
Period of Report: 2011-08-24

Reporting Person: SPO ADVISORY CORP (10% Owner)
Reporting Person: SPO ADVISORY PARTNERS LP (10% Owner)
Reporting Person: SF ADVISORY PARTNERS LP (10% Owner)
Reporting Person: SPO PARTNERS II LP (10% Owner)
Reporting Person: SAN FRANCISCO PARTNERS LP (10% Owner)
Reporting Person: SCULLY JOHN H (10% Owner)
Reporting Person: OBERNDORF WILLIAM E (10% Owner)
Reporting Person: MCDERMOTT EDWARD H (10% Owner)

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	9275809	Indirect

Footnotes

F1: As a result of the purchases causing this filing, 8,975,909 shares of the Issuer's common stock are directly owned by SPO Partners II, L.P. ("SPO Partners"), and may be deemed to be indirectly beneficially owned by (i) SPO Advisory Partners, L.P. ("SPO Advisory"), the sole general partner of SPO Partners, (ii) SPO Advisory Corp. ("SPO Corp."), the sole general partner of SPO Advisory, and (iii) John H. Scully ("JHS"), William E. Oberndorf ("WEO") and Edward H. McDermott ("EHM"), the three controlling persons of SPO Corp. 299,900 shares of the Issuer's common stock are directly owned by San Francisco Partners, L.P. ("SF Partners"), and may be deemed to be indirectly beneficially owned by (i) SF Advisory Partners, L.P. ("SF Advisory"), the sole general partner of SF Partners, (ii) SPO Corp., the sole general partner of SF Advisory, and (iii) JHS, WEO & EHM, the three controlling persons of SPO Corp.

F2: Additionally, (i) JHS owns 14,600 shares of the Issuer's common stock in his IRAs, which are self-directed, (ii) WEO owns 48,700 shares of the Issuer's common stock in his IRA, which is self-directed, and (iii) EHM owns 1,000 shares of the Issuer's common stock in his IRAs, which are self directed.