Cautionary statements Page 2 Cautionary Statement Regarding Forward-Looking Information Statements in this presentation, other than statements of historical fact, are “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934. Words such as “expect,” “estimate,” “project,” “budget,” “forecast,” “target”, “anticipate,” “intend,” “plan,” “may,” “will,” “could,” “should,” “poised”, “believes,” “predicts,” “potential,” “continue,” “de-risks,” and similar expressions are intended to identify such forward-looking statements; however the absence of these words does not mean the statements are not forward-looking. Such forward looking statements include statements regarding the proration of the merger consideration, potential upside in Cimarex stock performance, operational synergies resulting from the proposed transaction, advantages of combined company scale, post-transaction financial position of the combined company, anticipated closing date of the proposed transaction, and risks of Resolute remaining a standalone company. Forward-looking statements in this presentation include matters that involve known and unknown risks, uncertainties and other factors that may cause actual results, levels of activity, performance or achievements to differ materially from results expressed or implied by this presentation. Such risk factors include, among others: the expected timing and likelihood of completion of the proposed transaction, the ability to successfully integrate the businesses, the occurrence of any event, change or other circumstances that could give rise to the termination of the merger agreement, the possibility that stockholders of Resolute may not approve the merger agreement, the risk that the parties may not be able to satisfy the conditions to the proposed transaction in a timely manner or at all, risks related to disruption of management time from ongoing business operations due to the proposed transaction, the risk that any announcements relating to the proposed transaction could have adverse effects on the market price of Cimarex’s common stock or Resolute’s common stock, the risk of any unexpected costs or expenses resulting from the proposed transaction, the outcome of any litigation relating to the proposed transaction, the risk that the proposed transaction and its announcement could have an adverse effect on the ability of Cimarex and Resolute to retain customers and retain and hire key personnel and maintain relationships with their suppliers and customers and on their operating results and businesses generally, the risk the pending proposed transaction could distract management of both entities and they will incur substantial costs, the risk that problems may arise in successfully integrating the businesses of the companies, which may result in the combined company not operating as effectively and efficiently as expected, the risk that the combined company may be unable to achieve synergies or other anticipated benefits of the proposed transaction or it may take longer than expected to achieve those synergies or benefits, the volatility in commodity prices for oil and natural gas, the risk of the impact of a downgrade in credit rating, the presence or recoverability of estimated reserves, the ability to replace reserves, environmental risks, drilling and operating risks, exploration and development risks, competition, government and tax regulation or other actions, the ability of management to execute its plans to meet its goals and other important factors that could cause actual results to differ materially from those projected. All such factors are difficult to predict and are beyond Resolute’s control. Additional factors that could cause results to differ materially from those described above can be found in Cimarex’s annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K that are available on its website at http://www.cimarex.com and on the website of the Securities and Exchange Commission (the “SEC”) at http://www.sec.gov, and in Resolute’s annual reports on Form 10-K, quarterly reports on Form 10-Q and current reports on Form 8-K that are available on Resolute’s website at http://www.resoluteenergy.com and on the SEC’s website at http://www.sec.gov. Actual results may differ materially from those contained in the forward-looking statements in this presentation. Neither Resolute or Cimarex undertakes any obligation and does not intend to update these forward-looking statements to reflect events or circumstances occurring after the date of this presentation. You are cautioned not to place undue reliance on these forward-looking statements, which speak only as of the date of this presentation. This presentation also contains certain forward-looking non-GAAP measures of financial performance that management believes are good tools for internal use and the investment community in evaluating overall financial performance. These measures may not be comparable to similar measures presented by other companies and should not be viewed as a substitute for measures reported under U.S. GAAP. This presentation contains references to EBITDA and net debt. EBITDA is calculated as earnings before interest, taxes, depreciation and amortization expenses. EBITDA is a non-GAAP financial measure as it excludes amounts included in net earnings, the most directly comparable measure calculated in accordance with GAAP. This measure should not be considered as an alternative to net earnings or other measures derived in accordance with GAAP. Net debt is calculated as total debt minus the sum of cash and cash equivalents. This measure should not be considered as an alternative to total debt or other measures derived in accordance with GAAP. Due to the forward-looking nature of the aforementioned non-GAAP financial measures, management cannot reliably or reasonably predict certain of the necessary components of the most directly comparable forward-looking GAAP measures. Accordingly, we are unable to present a quantitative reconciliation of such forward-looking non-GAAP financial measures to their most directly comparable forward-looking GAAP financial measures. Amounts excluded from these non-GAAP measures in future periods could be significant. Production rates, including “early time” rates, 24hour peak IP rates, 30, 60, 90, 120 and 150 day peak IP rates, for both our wells and for those wells that are located near to our properties are limited data points in each well’s productive history and represent three stream gross production. These rates are sometimes actual rates and sometimes extrapolated or normalized rates. As such, the rates for a particular well may change as additional data becomes available. Peak production rates are not necessarily indicative or predictive of future production rates, EUR or economic rates of return from such wells and should not be relied upon for such purpose. Equally, the way we calculate and report peak IP rates and the methodologies employed by others may not be consistent, and thus the values reported may not be directly and meaningfully comparable. Lateral lengths described are indicative only. Actual completed lateral lengths depend on various considerations such as leaseline offsets. Standard length laterals, sometimes referred to as 5,000 foot laterals, are laterals with completed length generally between 4,000 feet and 5,500 feet. Midlength laterals, sometimes referred to as 7,500 foot laterals, are laterals with completed length generally between 6,000 feet and 8,000 feet. Long laterals, sometimes referred to as 10,000 foot laterals, are laterals with completed length generally longer than 8,000 feet. Additional Information and Where to Find it This presentation does not constitute an offer to buy or sell or the solicitation of an offer to buy or sell any securities or a solicitation of any vote or approval. This communication relates to a proposed business combination between Resolute and Cimarex. In connection with the proposed transaction, Cimarex has filed with the SEC a registration statement on Form S-4 that includes a proxy statement of Resolute and a prospectus of Cimarex. The registration statement became effective on January 30, 2019. Resolute filed with the SEC a proxy statement on Schedule 14A on January 30, 2019. The proxy statement / prospectus was mailed to stockholders of Resolute on or about January 30, 2019. Each of Resolute and Cimarex also plans to file other relevant documents with the SEC regarding the proposed transaction. No offering of securities shall be made except by means of a prospectus meeting the requirements of Section 10 of the U.S. Securities Act of 1933, as amended. INVESTORS AND SECURITY HOLDERS OF RESOLUTE AND CIMAREX ARE URGED TO READ THE REGISTRATION STATEMENT, PROXY STATEMENT/PROSPECTUS AND OTHER DOCUMENTS THAT MAY BE FILED WITH THE SEC CAREFULLY AND IN THEIR ENTIRETY IF AND WHEN THEY BECOME AVAILABLE BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION ABOUT THE PROPOSED TRANSACTION. Investors and security holders may obtain free copies of these documents and other documents containing important information about Resolute and Cimarex, once such documents are filed with the SEC through the website maintained by the SEC at http://www.sec.gov. Copies of the documents filed with the SEC by Resolute will be available free of charge on Resolute’s website at https://www.resoluteenergy.com/ under the tab “Investors” and then under the heading “SEC Filings.” Copies of the documents filed with the SEC by Cimarex will be available free of charge on Cimarex’s website at https://www.cimarex.com/home/default.aspx under the tab “Investor Relations” and then under the heading “Financial Information.” Certain Information Concerning Participants Resolute, Cimarex and certain of their respective directors and executive officers may be deemed to be participants in the solicitation of proxies in respect of the proposed transaction. Information about the directors and executive officers of Cimarex is set forth in Cimarex’s proxy statement for its 2018 annual meeting of stockholders, which was filed with the SEC on March 30, 2018. Information about the directors and executive officers of Resolute, including a description of their direct and indirect interests, by security holdings or otherwise, is set forth in the proxy statement / prospectus and in its proxy statement for its 2018 annual meeting of stockholders, which was filed with the SEC on May 18, 2018. These documents can be obtained free of charge from the sources indicated above. Other information regarding the participants in the proxy solicitations and a description of their direct and indirect interests, by security holdings or otherwise, are contained in the proxy statement/prospectus and other relevant materials to be filed with the SEC when such materials become available. Investors should read the proxy statement/prospectus carefully before making any voting or investment decisions. You may obtain free copies of these documents from Resolute or Cimarex using the sources indicated above.