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Filing Details

Accession Number:: 0001209191-10-035697
Form Type:: 4
Zero Holdings:: No
Publication Time:: 2010-06-24 13:00:00
Reporting Period:: 2010-06-22

Filing Date:: 2010-06-24
Accepted Time:: 2010-06-24 21:35:53
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
1290912	Rnbd Gp Llc	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	2010-06-22	17,930,000	$13.16	43,700,000	No	4	S	Direct

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

Footnotes

OAS Holding Company LLC ("OAS Holdco") sold 11,630,000 shares of common stock to the public in connection with the initial public offering of the issuer on June 22, 2010 (the "IPO"). Pursuant to the underwriting agreement and in connection with the IPO, the underwriters exercised their option (the "Over-Allotment Option") to purchase additional shares of common stock from OAS Holdco. The Over-Allotment Option closed simultaneously with the IPO. OAS Holdco sold an additional 6,300,000 shares of common stock pursuant to the underwriters' exercise of the Over-Allotment Option.
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 own a 61% interest in OAS Holdco. The EnCap Funds may be deemed to beneficially own the reported securities.
The EnCap Funds are controlled indirectly by Messrs. Miller, Phillips, Petersen, and Zorich which 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 each of EnCap Fund VI and EnCap VI-B, and EnCap Fund VII GP is the sole general partner of EnCap Fund VII. Therefore, Messrs. Miller, Phillips, Petersen and Zorich, RNBD, EnCap Investments GP, EnCap Investments LP, EnCap Fund VI GP and EnCap Fund VII GP may be deemed to beneficially own the reported securities.
This report is filed in connection with the Form 4 filed jointly today by the EnCap Funds, EnCap Investments GP, EnCap Investments LP, EnCap Fund VI GP and EnCap Fund VII GP and the Form 4 filed today by Mr. Zorich.
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.