ABOUT WHITING INVESTOR RELATIONS CAREERS CORPORATE GOVERNANCE ENVIRONMENTAL, HEALTH & SAFETY MEDIA VENDOR INFORMATION ROYALTY & INTEREST OWNERS CORPORATE GIVING COMMUNITY OUTREACH WHITING USA TRUST II CONTACT US CAREERS WHITING: PROGRESS MEETS VALUE Whiting Petroleum Corporation is an independent exploration and production company with an oil focused asset base. We are a top crude oil producer in North Dakota. Headquartered in Denver, Colorado, we lead the industry with our competitive assets, commitment to safety, dedication to technology and record-setting results. Whiting is a competitive company, with a strong, responsible plan to create long-term value. 2020 SUSTAINABILITY REPORT 2020 SUSTAINABILITY REPORT METRICS INVESTOR RELATIONS © Copyright 2021 Whiting Petroleum All Rights Reserved • Website Design & Development by o2 Group

ABOUT WHITING INVESTOR RELATIONS SEC Filings Press Releases Email Alerts Analyst Coverage Webcasts Presentations & Events Annual Reports Stock Quote Transfer Agent IR Contact Forward Looking Stmnt Information Requests Tax Documents CAREERS CORPORATE GOVERNANCE ENVIRONMENTAL, HEALTH & SAFETY MEDIA VENDOR INFORMATION ROYALTY & INTEREST OWNERS CORPORATE GIVING COMMUNITY OUTREACH WHITING USA TRUST II CONTACT US CAREERS PRESENTATIONS & EVENTS You are here: Home / Investor Relations / Presentations & Events © Copyright 2021 Whiting Petroleum All Rights Reserved • Website Design & Development by o2 Group

ABOUT WHITING Whiting History Reserves and Production U.S. Operations INVESTOR RELATIONS CAREERS CORPORATE GOVERNANCE ENVIRONMENTAL, HEALTH & SAFETY MEDIA VENDOR INFORMATION ROYALTY & INTEREST OWNERS CORPORATE GIVING COMMUNITY OUTREACH WHITING USA TRUST II CONTACT US CAREERS RESERVES AND PRODUCTION You are here: Home / About Whiting / Reserves and Production RESERVES AND PRODUCTION RESERVES Our proved reserves as of December 31, 2020 totaled 260.2 MMBOE. PRODUCTION Our production in Q2 2021 totaled 92.6 MBOE/d. WHITING PETROLEUM CORPORATION NEWS Whiting Petroleum Reports Third Quarter 2021 Financial and Operating Results Whiting Petroleum Completes Williston Basin Asset Acquisition, D-J Basin Asset Divestiture and Revolver Redetermination Whiting Petroleum Reports Second Quarter 2021 Financial and Operating Results Whiting Petroleum to Acquire Williston Basin Asset and Divest Colorado Asset © Copyright 2021 Whiting Petroleum All Rights Reserved • Website Design & Development by o2 Group