INVESTORS IRS FORM 8937 IRS Form 8937 June 7, 2021 Report of Organizational Actions Affecting Basis of Securities Subscribe Here for Updates to your Inbox. Service expired To renew service, contact us on our website or call 972-234-9222 Copyright 2020 Sundance Energy. All rights reserved. Designed and built by Brand Iron

NEWS & MEDIA Stay connected with the latest news from Sundance. Learn more about us and read the most recent press releases, event news and analyst information. PRESS RELEASES Keep up with our most recent announcements Sundance Energy Successfully Deleverages Balance Sheet, Emerges from Chapter 11 Process Apr 23, 2021 | 2021 Emerges from Chapter 11 Process Having Eliminated Over $250 Million of Funded Debt ObligationsCompany Now a Private Entity Under New Ownership and Guided by a New Board of Directors DENVER, April 23, 2021 (Globe Newswire) -- Sundance Energy Inc. and its affiliates... Sundance Energy Takes Action to Strengthen Balance Sheet and Position Business for Sustained Future Success Mar 9, 2021 | 2021 Company initiates voluntary, prepackaged Chapter 11 process that will eliminate over $250 million of funded debt obligations Chapter 11 process expected to conclude in approximately 60 days All operations to continue as usual; employees, vendors, royalty owners, and... Subscribe Here for Updates to your Inbox. Service expired To renew service, contact us on our website or call 972-234-9222 Copyright 2020 Sundance Energy. All rights reserved. Designed and built by Brand Iron

CONTACT US Tap into our advanced technical capacity and regional expertise. Looking to grow and manage your portfolio of assets and maximize returns? Contact Sundance today. REASON* Select an Option Name* Email Address* Subject Message OUR LOCATIONS U.S. HEADQUARTERS 1050 17th Street Suite 700 Denver, CO 80265 (303) 543-5700 EAGLE FORD FIELD OPERATIONS 592 FM 99 Tilden, TX 78072 (303) 274-1220 SUNDANCE FAQ Click above to read through our frequently asked questions page for answers to any general inquiries you may have. REPORT POTENTIAL VIOLATIONS To report an instance where you believe a violation of our policies or standards has occurred, you may make a report by sending an email to hotline@sundanceenergy.net or by dialing (303) 543-5702. Subscribe Here for Updates to your Inbox. Service expired To renew service, contact us on our website or call 972-234-9222 Copyright 2020 Sundance Energy. All rights reserved. Designed and built by Brand Iron