Samson Resources II 15 East 5th Street Suite 1000 Tulsa, OK U.S.A. 74103 CONTACT US Samson Resources II, LLC (“Samson” or the “Company”) is a privately held oil and gas exploration and production Company headquartered in Tulsa, Oklahoma. Samson, which was started by Charles Schusterman in 1971, has had a proud 50 year history of finding and safely developing oil and gas reserves and production in the United States and other foreign countries. Samson announced in March 2021 that it had successfully closed the previously announced sale of its Powder River Basin assets in Wyoming to Continental Resources, Inc. Following the sale of the Company’s Powder River Basin assets to Continental Resources, Inc., the Company has successfully divested all of its upstream oil and gas assets. The Company is now focusing on the process of winding down its affairs and moving toward final dissolution. Latest News Samson Resources II, LLC Announces the Closing of the Sale of Its Powder River Basin Assets Mar 4, 2021 Samson Resources II, LLC Announces Redetermination and Extension of Reserve Based Lending Borrowing Base at $75 Million and Continuation of Drilling Plan in the Powder River Basin Oct 22, 2020 Samson Resources II, LLC Agrees to Sell Its Powder River Basin Assets for $215 Million Jan 24, 2021 © 2021 Samson Resources. All rights reserved.

Investors Investors may connect to the following link to access information: https://datasiteone.merrillcorp.com Investor Contacts Sharolyn Whiting-Ralston General Counsel 918-845-7275 sralston@samson.com or legal@samson.com Josh Anders Chief Financial Officer 713-410-7032 janders@samson.com or investorrelations@samson.com © 2021 Samson Resources. All rights reserved.

Samson Resources II, LLC Announces the Closing of the Sale of Its Powder River Basin Assets Tulsa, Okla., March 4, 2021 – Samson Resources II, LLC (“Samson” or the “Company”) announced today that it has successfully closed the previously announced sale of its Powder River Basin assets to Continental Resources, Inc. Following this closing, the Company has successfully divested substantially all of its upstream assets. The Company’s only remaining upstream oil and gas assets consist of approximately 24,000 net leasehold acres, 23,000 net mineral acres and 40 non-operated wells, all located in East Texas, Oklahoma and Louisiana, which the Company is currently marketing for sale and anticipates divesting in Q2 2021. The Company, which was started by Charles Schusterman in 1971, is beginning the process of winding down its affairs and moving toward final dissolution. Samson is a privately held onshore exploration and production company headquartered in Tulsa, Oklahoma. © 2021 Samson Resources. All rights reserved.

Contact Us Tulsa Headquarters: Samson Resources 15 East 5th Street Suite 1000 Tulsa, OK U.S.A. 74103 Contact: Josh Anders Chief Financial Officer 713-410-7032 janders@samson.com or investorrelations@samson.com © 2021 Samson Resources. All rights reserved.