Investor Presentation June 2023

• Enhanced Liquidity Position NOG IS POSITIONED TO EXECUTE ON ITS PIPELINE • Raised $223MM of Equity on May 15, 2023 Issued $500MM of 8.75% senior notes due in 2031 and reduced outstanding balance on the Company revolving line of credit Borrowing Base Expanded in November 2022 to $1.6 billion with an elected commitment of $1.0 billion 05/31/23(1) ($ in millions) $1.6 Billion Borrowing base with a $0.0 balance on the revolver 2023 2024 2025 1) Proforma revolver balance for May 2023 notes and equity offerings. 2026 2027 $705.1 $500 2028 Pro Forma Revolver Capacity Senior Notes New Senior Notes $500 2029 2030 2031 Investor Presentation June 2023 | 20 NOG

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