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Filing Details

Accession Number:: 0001209191-11-018812
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2011-03-17 21:26:45
Reporting Period:: 2011-03-17

Filing Date:: 2011-03-17
Accepted Time:: 2011-03-17 21:26:45
SEC Url:: Form 4 Filing

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1486159	Oasis Petroleum Inc.	OAS	Crude Petroleum & Natural Gas (1311)	000000000

Insiders

Cik	Name	Reported Address	Director	Officer	Large Shareholder	Other
1142791	Martin D Phillips	1100 Louisiana Suite 3150 Houston TX 77002	No	No	Yes	No
1167138	B David Miller	1100 Louisiana Suite 3150 Houston TX 77002	No	No	Yes	No
1181757	R Gary Petersen	1100 Louisiana Suite 3150 Houston TX 77002	No	No	Yes	No
1366397	P L Vi Fund Capital Energy Encap	1100 Louisiana Suite 3150 Houston TX 77002	No	No	Yes	No
1422885	Encap Energy Capital Fund Vii Lp	1100 Louisiana Suite 3150 Houston TX 77002	No	No	Yes	No
1494333	Encap Vi-B Acquisitions, L.p.	1100 Louisiana Suite 3150 Houston TX 77002	No	No	Yes	No

Reported Non-Derivative Transactions

Show Other Fields >>

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Disposition	2011-03-17	3,000,000	$31.19	19,284,753	No	4	S	Direct

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Direct

Footnotes

On March 17, 2011, EnCap Energy Capital Fund VI, L.P. ("EnCap Fund VI"), EnCap VI-B Acquisitions, L.P. ("EnCap VI-B") and EnCap Energy Capital Fund VII, L.P. ("EnCap Fund VII" and, together with EnCap Fund VI and EnCap VI-B, the "EnCap Funds") collectively sold 3,000,000 shares of common stock of Oasis Petroleum Inc. in a block trade. EnCap Fund VI sold 1,270,833 shares, EnCap VI-B sold 695,631 shares and EnCap Fund VII sold 1,033,536 shares.
The EnCap Funds are controlled indirectly by David B. Miller, D. Martin Phillips, Gary R. Petersen, and Robert L. Zorich (the "Managing Directors"). The Managing Directors are members of RNBD GP LLC ("RNBD") and any action taken by RNBD to dispose or acquire securities has to be unanimously approved by all four members. RNBD is the sole member of EnCap Investments GP, L.L.C. ("EnCap Investments GP"), which is the general partner of EnCap Investments L.P. ("EnCap Investments LP"), which is the general partner of EnCap Equity Fund VI GP, L.P. ("EnCap Fund VI GP") and EnCap Equity Fund VII GP, L.P. ("EnCap Fund VII GP").
EnCap Fund VI GP is the sole general partner of EnCap Fund VI and EnCap Fund VII GP is the sole general partner of EnCap Fund VII. EnCap Fund VI GP is also the general partner of EnCap Energy Capital Fund VI-B ("EnCap Fund VI-B), which is the sole member of EnCap VI-B Acquisitions GP, LLC ("EnCap VI-B GP"), which is the sole general partner of EnCap VI-B. Therefore, the Managing Directors, RNBD, EnCap Investments GP, EnCap Investments LP, EnCap Fund VI GP, EnCap Fund VII GP, EnCap Fund VI-B, and EnCap VI-B GP may be deemed to beneficially own the reported securities.
This report is filed in connection with the Form 4 filed today by Mr. Zorich, a director of the issuer.
The reporting persons disclaim beneficial ownership of the reported securities except to the extent of their pecuniary interest therein, and this report shall not be deemed an admission that the reporting persons are the beneficial owners of the reported securities for purposes of Section 16 or for any other purpose.