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Forward Looking Statement FORWARD LOOKING STATEMENT AND OTHER IMPORTANT INFORMATION FOR INVESTORS AND STOCKHOLDERS Forward-Looking Statements statements, This presentation other contains than statementsforward-of looking historical statements fact, included within the in this meaning presentation of Section that27A address of the activities, Securities events Act of or1933 developments and Section that 21E Diamondback of the Securities Energy, Exchange Inc. (the Act “Company” of 1934. All or “Diamondback”) “plan,” “intend,”expects, “foresee,” believes “should,” or anticipates “would,” “could,” will or may or other occursimilar in the expressions future are forward are intended -lookingto statements identify forward . The words -looking “believe,” statements, “expect,” which “may,” are generally “estimates,” not historical “will,” “anticipate,” in nature. However, in this presentation the absence specifically of these words include does thenot expectations mean thatof the plans, statements strategies, are not objectives forwardand -looking anticipated . Without financial limitingand theoperating generalityresults of the foregoing, of the Company, forwardincluding -looking statements as to the Company’s contained assumptions acquisitions, made drillingby programs, the Company production, based on hedging management’s activities,expectations capital expenditure and perception levels and of historical other guidance trends, included current conditions, in this presentation anticipated . These futurestatements developments are and based other on certain factors believed actual results to beto appropriate differ materially . Suchfrom statements those implied are subject or expressed to a number by the of forward assumptions, -looking risks statements and uncertainties, . These include manythe of which factors are discussed beyondor the referenced control ofin the the Company, Company’s which filings may with cause the Securities conditionsand andExchange resulting capital Commission restraints, (“SEC”), prices including and demand its Forms for 10oil-K, and 10natural-Q and gas,8-K and availability any amendments of drilling equipment thereto, relating and personnel, to financial availability performance of sufficient and results, capital current to execute economic the reserves Company’s and business efficiently plan, develop impact and ofexploit compliance its current with legislation reserves, the and Company’s regulations, ability successful to successfully results from identify, the complete Company’s and identified integrate drilling acquisitions locations, of properties the Company’s or businesses ability to and replace other important factors that could cause actual results to differ materially from those projected. OctoberForward-25, looking 2018statements relating toincluded Diamondback’s in this presentation pending merger also with involve Energen certain Corporation risks and uncertainties (“Energen”),discussed which contains, or referenced amongin other Diamondback’s things, additional 424(b)(3) riskprospectus factors relating filed with to the the pending SEC on merger completion thatof could the pending cause the merger, resultsincluding to differthe materially ability to from successfully those expected integrate bythe thebusinesses, management theof occurrence Diamondback of any orevent, Energen change . These or other include circumstances the expected that timing could and give likelihood rise to the of shareholders termination of ofthe Energen merger may agreement, not approve the the possibility merger agreement, that stockholders the riskof that Diamondback the parties may maynot notbe approve able tothe satisfy issuance the conditions of new shares to theof pending common merger stock inin a timely the pending manner merger or at all, or risks that adverse related to effects disruption on theof market management price of Diamondback’s time from ongoing common business stock operations or Energen’s duecommon to the pending stock, the merger, risk ofthe anyrisk unexpected that anycosts announcements or expensesrelating resultingto from the the pending pending merger merger, could the have risk of personnel litigation and relating maintain to the relationships pending merger, with their the risk suppliers that the and pending customers merger and on have their an adverse operating effect results onand the businesses ability of Diamondback generally, the and risk Energen the pending to retain merger customers could distract and retain management and hire key of both not operating entities and as effectively they will incur and efficiently substantialas costs, expected, the risk the that riskproblems that the combined may arise in company successfully may integrating be unable to the achieve businesses synergies of the orcompanies, other anticipated which may benefits result ofin the thepending combined merger company or it may are difficult take longer to predict than expected and are beyond to achieve Diamondback’s those synergies or Energen’s or benefits control, and other including important those factors detailed that incould Diamondback’s cause actual annual results reports to differ onmaterially Form10-K, from quarterly those projected reports on . Form All such 10factors-Q and annual currentreports reports on on Form Form 108-K-K, that quarterly are available reportson onits Form website10-Q atand http://www current reports .diamondbackenergy on Form8-K .that comare andavailable on the SEC’s on Energen’s website at website http://www at http://www .sec.gov, and .energen those .com detailed and on in Energen’s the SEC’s accurate website .at http://www.sec.gov. All such forward-looking statements are based on assumptions that Diamondback or Energen believe to be reasonable but that may not prove to be update Any forward any forward -looking -looking statement statement, speaks only whether as of as the a result date on of new which information, such statement future isevents made,or and otherwise, Diamondback except and as required Energen,by asapplicable may be applicable, law. Readers undertake are cautioned no obligation not toto place correct undue or reliance on these forward-looking statements that speak only as of the date hereof. estimates The presentation due to,also among contains otherthe things, Company’s uncertainty updated in drilling 2018 production schedules,guidance changes.in The market actualdemand levels ofand production, unanticipated capitaldelays expenditures in production and expenses . These may estimates be higher are based or lower onthan numerous these assumptions, assumptions may including not prove assumptions to be accurate, related to which number could ofresult wells drilled, in actual average resultsspud differing to release materially times, from rig count, estimates and . If production any of the rates rigs for currently wells placed being utilized on production or intended . All orto any beof utilized these becomes number of unavailable wells. Similarly, for any average reason, spud andto the release Company times is may not able not be to secure maintained a replacement in 2018. No onassurance a timely basis, can be we made maythat not new be able wells to will drill,produce complete in and line with placehistoric on production performance, the expected or that existing commodity wells prices will continue and the potential to produce forin unanticipated line with expectations increases.in Our costs ability associated to fund with our 2018 drilling, andproduction future capital andbudgets transportation is subject . Into addition, numerous ourrisks production and uncertainties, estimate assumes including there volatility will not in business be any new . Forfederal, additional state discussion or local of regulation the factors of that portions may of cause theus energy not to industry achievein our which production we operate, estimates, or an see interpretation the Company’s of existing filings with regulation, the SEC,that including will be itsmaterially forms10-K, adverse10-Q and to our8-K and prospective any amendments data to reflect thereto events . We or circumstances do not undertake afterany the obligation date of thisto presentation release publicly . Therefore, the results you are ofcautioned any future not revisions to placewe undue may reliance make to onthis this information prospective.data or to update this