Exhibit 99
Form 3 Joint Filer Information
Name: EnCap Partners GP, LLC
Address: 1100 LOUISIANA STREET, SUITE 4900
HOUSTON, TX 77002
Issuer & Ticket Symbol: Oasis Petroleum Inc. [OAS]
Date of Event Requiring
Statement: 02/14/2018
Relationship of Reporting 10% Owner
Person to Issuer:
Signature:
By: /s/ D. Martin Phillips, Managing Partner
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Date: 02/20/2018
Name: Forge Energy, LLC
Address: 15727 ANTHEM PARKWAY, SUITE 501
SAN ANTONIO, TX 78249
Issuer & Ticket Symbol: Oasis Petroleum Inc. [OAS]
Date of Event Requiring
Statement: 02/14/2018
Relationship of Reporting 10% Owner
Person to Issuer:
Signature:
By: /s/ Barry Winstead, President & CEO
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Date: 02/20/2018
