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As filed with the Securities and Exchange Commission on June 9, 2016

Registration No. 333-

UNITED STATES SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM S-3 REGISTRATION STATEMENT

UNDER THE SECURITIES ACT OF 1933

Antero Resources Corporation (Exactnameofregistrantasspecifiedinitscharter)

Delaware (Stateorotherjurisdictionof

incorporationororganization)

80-0162034 (I.R.S.EmployerIdentificationNo.)

1615 Wynkoop Street Denver, Colorado 80202

(303) 357-7310 (Address,includingzipcode,andtelephonenumber,includingareacode,ofRegistrant'sprincipalexecutiveoffices)

Glen C. Warren, Jr. President, Chief Financial Officer and Secretary

1615 Wynkoop Street Denver, Colorado 80202

(303) 357-7310 (Name,address,includingzipcode,andtelephonenumber,includingareacode,ofagentforservice)

Copies to: W. Matthew Strock

Julian J. Seiguer Vinson & Elkins L.L.P. 1001 Fannin, Suite 2500

Houston, Texas 77002-6760 (713) 758-2222

Approximate date of commencement of proposed sale to the public: As soon as practicable after the effective date of this Registration Statement.

Iftheonlysecuritiesbeingregisteredonthisformarebeingofferedpursuanttodividendorinterestreinvestmentplans,pleasecheckthefollowingbox.o

IfanyofthesecuritiesbeingregisteredonthisFormaretobeofferedonadelayedorcontinuousbasispursuanttoRule415undertheSecuritiesActof1933,otherthansecuritiesofferedonlyinconnectionwithdividendorinterestreinvestmentplans,checkthefollowingbox.ý

IfthisFormisfiledtoregisteradditionalsecuritiesforanofferingpursuanttoRule462(b)undertheSecuritiesAct,pleasecheckthefollowingboxandlisttheSecuritiesActregistrationstatementnumberoftheearliereffectiveregistrationstatementforthesameoffering.o

IfthisFormisapost-effectiveamendmentfiledpursuanttoRule462(c)undertheSecuritiesAct,checkthefollowingboxandlisttheSecuritiesActregistrationstatementnumberoftheearliereffectiveregistrationstatementforthesameoffering.o

IfthisFormisaregistrationstatementpursuanttoGeneralInstructionI.D.orapost-effectiveamendmenttheretothatshallbecomeeffectiveuponfilingwiththeCommissionpursuanttoRule462(e)undertheSecuritiesAct,checkthefollowingbox:ý

IfthisFormisapost-effectiveamendmenttoaregistrationstatementfiledpursuanttoGeneralInstructionI.D.filedtoregisteradditionalsecuritiesoradditionalclassesofsecuritiespursuanttoRule413(b)undertheSecuritiesAct,checkthefollowingbox:o

Indicatebycheckmarkwhethertheregistrantisalargeacceleratedfiler,anacceleratedfiler,anon-acceleratedfilerorasmallerreportingcompany.Seethedefinitionsof"largeacceleratedfiler,""acceleratedfiler"and"smallerreportingcompany"inRule12b-2oftheExchangeAct.

CALCULATION OF REGISTRATION FEE

Title of Each Class of Securities to be Registered

Amount to be Registered

Proposed Maximum Offering Price per

Proposed Maximum Aggregate Offering

Price Amount of

Registration Fee(2)

CommonStock,parvalue$0.01(1)

(1) ThereisbeingregisteredhereundersuchindeterminatenumberofsharesofcommonstockoftheregistrantasmaybesoldinanofferingpursuanttothisRegistrationStatement.

(2) InrelianceonRule456(b)andRule457(r)undertheSecuritiesActof1933,theregistrantherebydeferspaymentoftheregistrationfeerequiredinconnectionwiththisRegistrationStatement.

Largeacceleratedfilerý Acceleratedfilero Non-acceleratedfilero(Donotcheckifa

smallerreportingcompany)

Smallerreportingcompanyo

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The information in this prospectus is not complete and may be changed. This prospectus is not an offer to sell these securities and it is not soliciting anoffer to buy these securities in any state where the offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED JUNE 9, 2016

PROSPECTUS

26,750,000 Shares

Antero Resources CorporationCommon Stock

Weareoffering26,750,000sharesofourcommonstock.

OurcommonstockislistedontheNewYorkStockExchangeunderthesymbol"AR."ThelastreportedtradingpriceofourcommonstockontheNewYorkStockExchangeonJune8,2016was$29.28pershare.

Wehavegrantedtheunderwritersanoptiontopurchaseamaximumof4,012,500additionalsharesofcommonstockatthepricesetforthbelowsolelytocoverover-allotments,ifany.

Investing in our common stock involves risks. Please read "Risk Factors" beginning on page 7 of this prospectus.

Theunderwritershaveagreedtopurchasethesharesofcommonstockfromusatapriceof$pershare,whichwillresultinapproximately$ofnetproceedstousbeforeofferingexpenses.

TheunderwritersproposetoofferthesharesofcommonstockfromtimetotimeforsaleinoneormoretransactionsontheNewYorkStockExchange,intheover-the-countermarket,throughnegotiatedtransactionsorotherwiseatmarketpricesprevailingatthetimeofsale,atpricesrelatedtoprevailingmarketpricesoratnegotiatedprices.

DeliveryofthesharesofcommonstockwillbemadeonoraboutJune,2016.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved these securities or determined ifthis prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

ThedateofthisprospectusisJune,2016

Credit Suisse J.P. Morgan

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You should rely only on the information contained in or incorporated by reference into this prospectus. We have not authorized any dealer,salesman or other person to provide you with additional or different information. If anyone provides you with different or inconsistent information, youshould not rely on it. This prospectus is not an offer to sell or the solicitation of an offer to buy any securities other than the securities to which it relatesand is not an offer to sell or the solicitation of an offer to buy securities in any jurisdiction to any person to whom it is unlawful to make an offer orsolicitation in that jurisdiction. You should not assume that the information contained in this prospectus is accurate as of any date other than the date onthe front cover of this prospectus, or that the information contained in any document incorporated by reference is accurate as of any date other than thedate of such document, regardless of the time of delivery of this prospectus or any sale of a security.

Page ABOUTTHISPROSPECTUS 1WHEREYOUCANFINDMOREINFORMATION 2CAUTIONARYSTATEMENTREGARDINGFORWARD-LOOKINGSTATEMENTS 3PROSPECTUSSUMMARY 5RISKFACTORS 7USEOFPROCEEDS 9CAPITALIZATION 10PRICERANGEOFCOMMONSTOCK 11DIVIDENDPOLICY 12DESCRIPTIONOFCOMMONSTOCK 13MATERIALU.S.FEDERALINCOMETAXCONSIDERATIONSFORNON-U.S.HOLDERS 17UNDERWRITING 21LEGALMATTERS 29EXPERTS 29

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ABOUT THIS PROSPECTUS

Additionalinformation,includingourfinancialstatementsandthenotesthereto,isincorporatedinthisprospectusbyreferencetoourreportsfiledwiththeSEC.Pleaseread"WhereYouCanFindMoreInformation"below.Youareurgedtoreadthisprospectuscarefully,including"RiskFactors,"andthedocumentsincorporatedbyreferenceintheirentiretybeforeinvestinginoursecurities.

Unlessthecontextrequiresotherwiseorunlessotherwisenoted,allreferencesinthisprospectusto"Antero"andtothe"Company,""we,""us"or"our"aretoAnteroResourcesCorporationanditssubsidiaries.

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WHERE YOU CAN FIND MORE INFORMATION

Wefileannual,quarterlyandcurrentreportsandotherinformationwiththeSEC.YoumayreadandcopyanydocumentwefileattheSEC'spublicreferenceroomlocatedat100FStreet,N.E.,Washington,DC20549.PleasecalltheSECat1-800-SEC-0330forfurtherinformationontheoperationofthepublicreferenceroom.OurSECfilingsarealsoavailabletothepublicattheSEC'swebsiteatwww.sec.gov .YoumayalsoaccesstheinformationwefileelectronicallywiththeSECthroughourwebsiteatwww.anteroresources.com .Wehavenotincorporatedbyreferenceintothisprospectustheinformationincludedon,orlinkedfrom,ourwebsite(otherthantotheextentspecifiedelsewhereherein),andyoushouldnotconsiderittobeapartofthisprospectus.Youmayalsoinspectreports,proxystatementsandotherinformationaboutAnteroResourcesCorporationattheofficesoftheNewYorkStockExchange("NYSE"),20BroadStreet,NewYork,NY10005.

We"incorporatebyreference"informationintothisprospectus,whichmeansthatwediscloseimportantinformationtoyoubyreferringyoutoanotherdocumentfiledseparatelywiththeSEC.Theinformationincorporatedbyreferenceisdeemedtobepartofthisprospectus,exceptforanyinformationsupersededbyinformationcontainedexpresslyinthisprospectus.Youshouldnotassumethattheinformationinthisprospectusiscurrentasofanydateotherthanthedateonthecoverpageofthisprospectus.

AnyinformationthatwefileunderSection13(a),13(c),14or15(d)oftheSecuritiesExchangeActof1933,asamended(the"ExchangeAct"),fromthedateofthisprospectusuntiltheterminationofthisoffering,andthatisdeemed"filed"withtheSEC,willautomaticallyupdateandsupersedethisinformation.Wealsoincorporatebyreferencethedocumentslistedbelow:

• ourAnnualReportonForm10-KforthefiscalyearendedDecember31,2015,includinginformationspecificallyincorporatedbyreferenceintosuchAnnualReportonForm10-KfromourProxyStatementforour2016AnnualMeetingofStockholdersfiledonApril27,2016;

• ourQuarterlyReportonForm10-QforthequarterendedMarch31,2016;

• ourCurrentReportsonForm8-KfiledonJanuary15,2016,February12,2016,March25,2016andApril1,2016(excludinganyinformationfurnishedandnotfiledpursuanttoItem2.02or7.01orcorrespondinginformationfurnishedunderItem9.01orincludedasanexhibit);and

• thedescriptionofourcommonstockincludedinourForm8-A(FileNo.001-36120),filedwiththeCommissiononOctober8,2013,includinganyamendmentorreportfiledforthepurposeofupdating,changingorotherwisemodifyingsuchdescription.

Youcanobtaincopiesofanyofthesedocumentswithoutchargeuponwrittenororalrequestbyrequestingtheminwritingorbytelephoneat:

AnteroResourcesCorporation1615WynkoopStreet

Denver,Colorado80202(303)357-7310

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CAUTIONARY STATEMENT REGARDING FORWARD-LOOKING STATEMENTS

Theinformationinthisprospectus,includingthedocumentsincorporatedbyreferenceherein,includes"forward-lookingstatements"withinthemeaningofSection27AoftheSecuritiesActof1933,asamended(the"SecuritiesAct"),andSection21EoftheExchangeAct.Allstatements,otherthanstatementsofhistoricalfactincludedinthisprospectus,regardingourstrategy,futureoperations,financialposition,estimatedrevenuesandlosses,projectedcosts,prospects,plansandobjectivesofmanagementareforward-lookingstatements.Whenused,thewords"could,""believe,""anticipate,""intend,""estimate,""expect,""project"andsimilarexpressionsareintendedtoidentifyforward-lookingstatements,althoughnotallforward-lookingstatementscontainsuchidentifyingwords.Theseforward-lookingstatementsarebasedonourcurrentexpectationsandassumptionsaboutfutureeventsandarebasedoncurrentlyavailableinformationastotheoutcomeandtimingoffutureevents.Whenconsideringforward-lookingstatements,youshouldkeepinmindtheriskfactorsandothercautionarystatementsdescribedundertheheading"RiskFactors"inthisprospectusandinourAnnualReportonForm10-KfortheyearendedDecember31,2015,whichisincorporatedbyreferenceherein.

Forward-lookingstatementsmayincludestatementsaboutour:

• abilitytosuccessfullycompletethependingAcquisitionasdescribedunder"Summary—RecentDevelopments,"integratetheassetswithourownandrealizethebenefitsfromthetransaction;

• businessstrategy;

• reserves;

• financialstrategy,liquidityandcapitalrequiredforourdevelopmentprogram;

• naturalgas,naturalgasliquids("NGLs")andoilprices;

• timingandamountoffutureproductionofnaturalgas,NGLsandoil;

• hedgingstrategyandresults;

• abilitytomeetourminimumvolumecommitmentsandtoutilizeormonetizeourfirmtransportationcommitments;

• futuredrillingplans;

• competitionandgovernmentregulations;

• pendinglegalorenvironmentalmatters;

• marketingofnaturalgas,NGLsandoil;

• leaseholdorbusinessacquisitions;

• costsofdevelopingourproperties;

• operationsofAnteroMidstreamPartnersLP;

• generaleconomicconditions;

• creditmarkets;

• uncertaintyregardingourfutureoperatingresults;and

• plans,objectives,expectationsandintentions.

Wecautionyouthattheseforward-lookingstatementsaresubjecttoalloftherisksanduncertainties,mostofwhicharedifficulttopredictandmanyofwhicharebeyondourcontrol,incidenttotheexplorationforanddevelopment,production,gathering,processing,transportationandsaleofnaturalgas,NGLs,andoil.Theserisksinclude,butarenotlimitedto,commoditypricevolatilityand

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continuedlowcommodityprices,inflation,lackofavailabilityofdrillingandproductionequipmentandservices,environmentalrisks,drillingandotheroperatingrisks,marketingandtransportationrisks,regulatorychanges,theuncertaintyinherentinestimatingnaturalgas,NGLs,andoilreservesandinprojectingfutureratesofproduction,cashflowandaccesstocapital,thetimingofdevelopmentexpenditures,ourabilitytosuccessfullycompletetheAcquisitionasdescribedunder"Summary—RecentDevelopments,"integratetheacquiredassetswithoursandrealizethebenefitsfromthetransaction,andtheotherrisksdescribedundertheheading"RiskFactors"inthisprospectusandinourAnnualReportonForm10-KfortheyearendedDecember31,2015,whichisincorporatedbyreferenceherein.

Reserveengineeringisaprocessofestimatingundergroundaccumulationsofnaturalgas,NGLs,andoilthatcannotbemeasuredinanexactway.Theaccuracyofanyreserveestimatedependsonthequalityofavailabledata,theinterpretationofsuchdataandpriceandcostassumptionsmadebyreservoirengineers.Inaddition,theresultsofdrilling,testingandproductionactivities,orchangesincommodityprices,mayjustifyrevisionsofestimatesthatweremadepreviously.Ifsignificant,suchrevisionswouldchangethescheduleofanyfurtherproductionanddevelopmentdrilling.Accordingly,reserveestimatesmaydiffersignificantlyfromthequantitiesofnaturalgas,NGLs,andoilthatareultimatelyrecovered.

Shouldoneormoreoftherisksoruncertaintiesdescribedinthisprospectusorthedocumentsincorporatedbyreferencehereinoccur,orshouldunderlyingassumptionsproveincorrect,ouractualresultsandplanscoulddiffermateriallyfromthoseexpressedinanyforward-lookingstatements.

Allforward-lookingstatements,expressedorimplied,includedinthisprospectusandthedocumentsincorporatedbyreferencehereinareexpresslyqualifiedintheirentiretybythiscautionarystatement.Thiscautionarystatementshouldalsobeconsideredinconnectionwithanysubsequentwrittenororalforward-lookingstatementsthatweorpersonsactingonourbehalfmayissue.

Exceptasotherwiserequiredbyapplicablelaw,wedisclaimanydutytoupdateanyforward-lookingstatements,allofwhichareexpresslyqualifiedbythestatementsinthissection,toreflecteventsorcircumstancesafterthedateofthisprospectus.

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PROSPECTUS SUMMARY

This summary highlights selected information contained elsewhere in this prospectus and the documents we incorporate by reference. It does notcontain all of the information you should consider before making an investment decision. You should read the entire prospectus, the documents incorporatedby reference and the other documents to which we refer for a more complete understanding of our business and this offering. Please read the section entitled"Risk Factors" in our Annual Report on Form 10-K for the year ended December 31, 2015, which is incorporated by reference in this prospectus for moreinformation about important factors you should consider before investing in our common stock in this offering.

Except as the context otherwise indicates, the information in this prospectus assumes no exercise of the underwriters' option to purchase additionalshares of common stock.

Our Company

Weareanindependentoilandnaturalgascompanyengagedintheexploration,developmentandacquisitionofnaturalgas,NGLsandoilpropertieslocatedintheAppalachianBasin.Wefocusonunconventionalreservoirs,whichcangenerallybecharacterizedasfracturedshaleformations.AsofMarch31,2016,weheldapproximately573,000netacresofrichgasanddrygaspropertieslocatedintheAppalachianBasininWestVirginia,OhioandPennsylvania.

Recent Developments

OnJune9,2016,weenteredintoapurchaseandsaleagreementwithathirdpartytoacquireapproximately55,000netacreslocatedprimarilyinWetzel,TylerandDoddridgeCounties,WestVirginia,includingapproximately14MMcfe/dofnetproduction(the"Acquisition").TotalconsiderationfortheAcquisitionatclosingisexpectedtobeapproximately$450million.Weexpecttofundtheconsiderationusingaportionofthenetproceedsreceivedfromthisoffering.TheAcquisitionisexpectedtocloseinthethirdquarterof2016,subjecttocustomaryclosingconditions,withaneffectivedateofJanuary1,2016.

UntilJuly9,2016,athirdpartyhastherighttosellits19%averageworkinginterestintheacquiredpropertiestoAnteroonthesameterms(the"TagAlongOption").IftheTagAlongOptionisexercised,Anterowillacquireapproximatelyanadditional13,000netacresand3MMcfe/dofnetproductionforanadditionalestimated$110million(the"TagAlongAcquisition").

TherecanbenoassurancesthattheAcquisitionortheTagAlongAcquisitionwillbeconsummatedorthattheexpectedbenefitsofsuchacquisitionswillberealized.Theclosingofthisofferingisnotconditionedon,norisitaconditionto,theconsummationoftheAcquisitionortheTagAlongAcquisition.IftheAcquisitionortheTagAlongAcquisitionisdelayed,notconsummatedorconsummatedinamannerdifferentthandescribedherein,thepriceofourcommonstockmaydecline.Inaddition,iftheAcquisitionortheTagAlongAcquisitionisnotconsummated,ourmanagementwillhavebroaddiscretionintheapplicationofthenetproceedsofthisoffering.Accordingly,ifyoudecidetopurchasecommonstockinthisoffering,youshouldbewillingtodosowhetherornotwecompletetheAcquisitionortheTagAlongAcquisition.

Corporate Information

Ourprincipalexecutiveofficesarelocatedat1615WynkoopStreet,Denver,Colorado,80202,andourtelephonenumberis(303)357-7310.Ourwebsiteaddressiswww.anteroresources.com .Exceptforinformationspecificallyincorporatedbyreferenceintothisprospectusthatmaybeaccessedfromourwebsite,theinformationonourwebsiteisnotpartofthisprospectus,andyoushouldrelyonlyoninformationcontainedorincorporatedbyreferenceinthisprospectuswhenmakingadecisionastowhetherornottoinvestinourcommonstock.

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The Offering

Issuer AnteroResourcesCorporation.

SharesofCommonStockOffered

26,750,000sharesofcommonstock(30,762,500sharesofcommonstockiftheunderwritersexercisetheiroptiontopurchaseadditionalsharesofcommonstockinfull).

CommonStockOutstandingFollowingthisOffering(1)

304,158,469sharesofcommonstock(308,170,969sharesofcommonstockiftheunderwritersexercisetheiroptiontopurchaseadditionalsharesofcommonstockinfull).

OptiontoPurchaseAdditionalShares

Wehavegrantedtheunderwritersa30-dayoptiontopurchaseupto4,012,500additionalsharesofcommonstocksolelytocoverover-allotments.

UseofProceeds

Weexpecttousetheestimatednetproceedsfromthisofferingofapproximately$million(or$millioniftheunderwritersexercisetheiroptiontopurchaseadditionalsharesinfull)tofundthepurchasepricefortheAcquisition,forgeneralcorporatepurposes,includingtofundtheTagAlongAcquisition(ifthethirdpartyexercisesitsoption)andforincrementaldevelopmentontheacquiredacreagethrough2017.IftheAcquisitiondoesnotclose,oriftheunderwriters'optiontopurchaseadditionalsharesisexercisedaftertheclosingoftheAcquisition,weintendtousethenetproceedsfromthisofferingorsuchexercise,asapplicable,forgeneralcorporatepurposes,includingtorepayaportionoftheoutstandingborrowingsunderourcreditfacility.Formoreinformationaboutouruseofproceedsfromthisoffering,see"UseofProceeds."

RiskfactorsYoushouldconsidercarefullytheinformationundertheheading"RiskFactors"beginningonpage7ofthisprospectusandallotherinformationcontainedorincorporatedbyreferencehereinbeforedecidingtoinvestinourcommonstock.

ExchangeListing

OurcommonstockistradedontheNewYorkStockExchangeunderthesymbol"AR."

(1) Basedon277,408,469sharesoutstandingasofJune8,2016.Excludescommonstockissuableuponvestingofoutstandingrestrictedstockunitsorexerciseofoutstandingstockoptions.

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RISK FACTORS

Aninvestmentinourcommonstockinvolvesasignificantdegreeofrisk.Beforeyouinvestinourcommonstock,youshouldcarefullyconsiderthoseriskfactorsincludedinourmostrecentAnnualReportonForm10-K,anysubsequentlyfiledQuarterlyReportsonForm10-QandanysubsequentlyfiledCurrentReportsonForm8-K,whichareincorporatedhereinbyreference,andthoseriskfactorsthatmaybeincludedherein,togetherwithalloftheotherinformationincludedinthisprospectusandthedocumentsweincorporatebyreference,inevaluatinganinvestmentinourcommonstock.Ifanyoftherisksdiscussedintheforegoingdocumentsweretooccur,ourbusiness,financialcondition,resultsofoperationsandcashflowscouldbemateriallyadverselyaffected.Pleaseread"CautionaryStatementRegardingForward-LookingStatements."

Risks Related to the Offering and Our Common Stock

The Acquisition may not be completed, and even if the Acquisition is completed, we may fail to realize the benefits anticipated as a result of the Acquisition.

TheAcquisitionisexpectedtocloseinthethirdquarterof2016,withaneffectivedateofJanuary1,2016,subjecttocustomaryclosingconditions.Iftheseconditionsarenotsatisfiedorwaived,theAcquisitionwillnotbeconsummated.TherecanbenoassurancesthattheAcquisitionortheTagAlongAcquisitionwillbeconsummatedorthattheexpectedbenefitsofsuchacquisitionswillberealized.Theclosingofthisofferingisnotconditionedon,norisitaconditionto,theconsummationoftheAcquisitionortheTagAlongAcquisition.IftheAcquisitionortheTagAlongAcquisitionisdelayed,notconsummatedorconsummatedinamannerdifferentthandescribedherein,thepriceofourcommonstockmaydecline.Inaddition,iftheAcquisitionortheTagAlongAcquisitionisnotconsummated,ourmanagementwillhavebroaddiscretionintheapplicationofthenetproceedsofthisoffering.Accordingly,ifyoudecidetopurchasecommonstockinthisoffering,youshouldbewillingtodosowhetherornotwecompletetheAcquisitionortheTagAlongAcquisition.

IfweareabletoconsummatetheAcquisitionortheTagAlongAcquisition,suchconsummationwouldinvolvepotentialrisks,including,withoutlimitation,inefficienciesandunexpectedcostsandliabilities.IfweconsummatetheAcquisitionortheTagAlongAcquisitionandiftheserisksorotherexpectedcostsandliabilitiesweretomaterialize,anydesiredbenefitsoftheAcquisitionortheTagAlongAcquisitionmaynotbefullyrealized,ifatall,andourfuturefinancialperformanceandresultsofoperationscouldbenegativelyimpacted.

Our amended and restated certificate of incorporation and amended and restated bylaws, as well as Delaware law, contain provisions that could discourageacquisition bids or merger proposals, which may adversely affect the market price of our common stock.

Ouramendedandrestatedcertificateofincorporationauthorizesourboardofdirectorstoissuepreferredstockwithoutstockholderapproval.Ifourboardofdirectorselectstoissuepreferredstock,itcouldbemoredifficultforathirdpartytoacquireus.Inaddition,someprovisionsofouramendedandrestatedcertificateofincorporationandamendedandrestatedbylawscouldmakeitmoredifficultforathirdpartytoacquirecontrolofus,evenifthechangeofcontrolwouldbebeneficialtoourstockholders,including:

• aclassifiedboardofdirectors,sothatonlyapproximatelyone-thirdofourdirectorsareelectedeachyear;

• limitationsontheremovalofdirectors;

• limitationsontheabilityofourstockholderstocallspecialmeetings;and

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• establishingadvancenoticeprovisionsforstockholderproposalsandnominationsforelectionstotheboardofdirectorstobeacteduponatmeetingsofstockholders.

We do not intend to pay dividends on our common stock, and our credit facility and the indentures governing our senior notes place certain restrictions on ourability to do so. Consequently, your only opportunity to achieve a return on your investment is if the price of our common stock appreciates.

Wedonotplantodeclaredividendsonsharesofourcommonstockintheforeseeablefuture.Additionally,ourcreditfacilityandtheindenturesgoverningourseniornotesplacecertainrestrictionsonourabilitytopaycashdividends.Consequently,youronlyopportunitytoachieveareturnonyourinvestmentinuswillbeifyousellyourcommonstockatapricegreaterthanyoupaidforit.Thereisnoguaranteethatthepriceofourcommonstockthatwillprevailinthemarketwilleverexceedthepricethatyoupayinthisoffering.

Future sales of our common stock in the public market could reduce our stock price, and any additional capital raised by us through the sale of equity orconvertible securities may dilute your ownership in us.

Wemayselladditionalsharesofcommonstockinsubsequentpublicofferings.Wemayalsoissueadditionalsharesofcommonstockorconvertiblesecurities.

Wecannotpredictthesizeoffutureissuancesofourcommonstockorsecuritiesconvertibleintocommonstockortheeffect,ifany,thatfutureissuancesandsalesofsharesofourcommonstockwillhaveonthemarketpriceofourcommonstock.Salesofsubstantialamountsofourcommonstock(includingsharesissuedinconnectionwithanacquisition),ortheperceptionthatsuchsalescouldoccur,mayadverselyaffectprevailingmarketpricesofourcommonstock.

We may issue preferred stock whose terms could adversely affect the voting power or value of our common stock.

Ouramendedandrestatedcertificateofincorporationauthorizesustoissue,withouttheapprovalofourstockholders,oneormoreclassesorseriesofpreferredstockhavingsuchdesignations,preferences,limitationsandrelativerights,includingpreferencesoverourcommonstockrespectingdividendsanddistributions,asourboardofdirectorsmaydetermine.Thetermsofoneormoreclassesorseriesofpreferredstockcouldadverselyimpactthevotingpowerorvalueofourcommonstock.Forexample,wemightgrantholdersofpreferredstocktherighttoelectsomenumberofourdirectorsinalleventsoronthehappeningofspecifiedeventsortherighttovetospecifiedtransactions.Similarly,therepurchaseorredemptionrightsorliquidationpreferenceswemightassigntoholdersofpreferredstockcouldaffecttheresidualvalueofthecommonstock.

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USE OF PROCEEDS

Weexpectthenetproceedsfromthisofferingtobeapproximately$million(orapproximately$millioniftheunderwritersexercisetheiroptiontopurchaseadditionalsharesinfull),afterdeductingestimatedfeesandexpenses.WeintendtousethenetproceedsfromthisofferingtofundthepurchasepricefortheAcquisition,forgeneralcorporatepurposes,includingtofundtheTagAlongAcquisition(ifthethirdpartyexercisesitsoption)andforincrementaldevelopmentontheacquiredacreagethrough2017.IftheAcquisitiondoesnotclose,oriftheunderwriters'optiontopurchaseadditionalsharesisexercisedaftertheclosingoftheAcquisition,weintendtousethenetproceedsfromthisofferingorsuchexercise,asapplicable,forgeneralcorporatepurposesincludingtorepayaportionoftheoutstandingborrowingsunderourcreditfacility.

AsofJune8,2016,wehadapproximately$790millionofoutstandingborrowingsand$708millionoflettersofcreditoutstandingunderourcreditfacility,whichbearsinterestatavariablerate,whichwasapproximately2.38%asofMarch31,2016.Theborrowingsthatmayberepaidwereincurredprimarilyforourdrillinganddevelopmentprogramandforgeneralcorporatepurposes.Wemayatanytimere-borrowamountsrepaidunderourcreditfacility.

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CAPITALIZATION

ThefollowingtablesetsforthourcashandcashequivalentsandcapitalizationasofMarch31,2016:

• onanactualbasis;and

• onanasadjustedbasistogiveeffecttotheissuanceandsaleofourcommonstockofferedherebyandtheapplicationofestimatednetproceeds(assumingnoexerciseoftheunderwriters'optiontopurchaseadditionalshares)asdescribedin"UseofProceeds."

Thistableshouldbereadinconjunctionwith,andisqualifiedinitsentiretybyreferenceto,"UseofProceeds"andourhistoricalauditedconsolidatedfinancialstatementsandtheaccompanyingnotesinourAnnualReportonForm10-KfortheyearendedDecember31,2015andourunauditedcondensedconsolidatedfinancialstatementsandtheaccompanyingnotesinourQuarterlyReportonForm10-QforthequarterendedMarch31,2016,whichareincorporatedbyreferenceintothisprospectus.

As of March 31, 2016

(in thousands) Actual As

adjusted Cashandcashequivalents $ 39,870 $ (1)Indebtedness: Seniorsecuredrevolvingcreditfacilities(2)(3) $ 1,360,000 $ 1,360,0006.0%seniornotesdue2020 525,000 525,0005.375%seniornotesdue2021 1,000,000 1,000,0005.125%seniornotesdue2022 1,100,000 1,100,0005.625%seniornotesdue2023 750,000 750,000Netunamortizedpremium 6,245 6,245Netunamortizeddebtissuancecosts (38,436) (38,436)Totalindebtedness(3) 4,702,809 4,702,809

Equity: Commonstock,$0.01parvalue;1,000,000,000sharesauthorized;277,061,336sharesoutstanding(303,811,336sharesoutstandingasadjusted) 2,771

Preferredstock;$0.01parvalue;50,000,000sharesauthorized;nosharesissuedandoutstanding — —

Additionalpaidincapital 4,251,755 Accumulatedearnings 1,803,756 1,803,756Totalstockholders'equity 6,058,282

Noncontrollinginterestinconsolidatedsubsidiary 1,362,062 1,362,062Totalequity 7,420,344

Totalcapitalization $ 12,123,153 $

(1) GivesproformaeffecttotheuseofthenetproceedsfromthisofferingtofundthepurchasepriceoftheAcquisitionandforgeneralcorporatepurposes.

(2) AsofJune8,2016,wehad$790millionofborrowingsand$708millionlettersofcreditoutstandingunderourcreditfacility.AsofJune8,2016,ournon-guarantorsubsidiaryAnteroMidstreamPartnersLPhad$775millionofborrowingsoutstandingunderitscreditfacility.

(3) IftheAcquisitiondoesnotclose,thenoutstandingborrowingsunderourcreditfacilitywouldbereducedbyallofthenetproceedsofthisoffering.

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PRICE RANGE OF COMMON STOCK

OurcommonstockislistedontheNewYorkStockExchangeunderthesymbol"AR."Thefollowingtableshows,fortheperiodsindicated,thehighandlowreportedsalepricesforourcommonstock,asreportedontheNewYorkStockExchange.

OnJune8,2016,thelastsalespriceofourcommonstockasreportedontheNewYorkStockExchangewas$29.28pershare.

AsofJune8,2016,therewere501holdersofrecordofourcommonstock.

Sales Price High Low 2014: FirstQuarter $ 68.43 $ 53.61SecondQuarter 67.92 56.28ThirdQuarter 66.10 53.42FourthQuarter 56.81 37.85

2015: FirstQuarter $ 42.42 $ 33.25SecondQuarter 46.06 33.89ThirdQuarter 34.56 20.00FourthQuarter 26.59 18.50

2016: FirstQuarter $ 27.85 $ 19.00SecondQuarter(throughJune8,2016) 30.66 24.26

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DIVIDEND POLICY

Ourabilitytopaydividendsisgovernedby(i)theprovisionsofDelawarecorporationlaw,(ii)ourAmendedandRestatedCertificateofIncorporationandourAmendedandRestatedBylaws,(iii)theindenturesrelatedtoourseniornotesand(iv)ourcreditfacility.Wehavenotpaidordeclaredanydividendsonourcommonstock.Thefuturepaymentofcashdividendsonourcommonstock,ifany,iswithinthediscretionofourboardofdirectorsandwilldependonourearnings,capitalrequirements,financialcondition,andotherrelevantfactors.Thereisnoassurancethatwewillpayanycashdividendsonourcommonstock.Wedonotanticipatedeclaringorpayinganycashdividendstoholdersofourcommonstockintheforeseeablefuture.

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DESCRIPTION OF COMMON STOCK

Thefollowingsummaryofourcommonstock,AmendedandRestatedCertificateofIncorporation(the"CertificateofIncorporation")andAmendedandRestatedBylaws(the"Bylaws")doesnotpurporttobecompleteandisqualifiedinitsentiretybyreferencetotheprovisionsofapplicablelawandtoourCertificateofIncorporationandBylaws.

Common Stock

OurCertificateofIncorporationauthorizes1,000,000,000sharesofcommonstock,parvalue$0.01pershare,forissuance.AsofJune8,2016,wehad277,408,469sharesofcommonstockissuedandoutstanding.

OurcommonstockcommencedtradingontheNYSEunderthesymbol"AR"onOctober16,2013inconnectionwithourinitialpublicoffering.AsofJune8,2016,therewere501holdersofrecordofourcommonstock.

Exceptasprovidedbylaworinapreferredstockdesignation,holdersofcommonstockareentitledtoonevoteforeachshareheldofrecordonallmatterssubmittedtoavoteofthestockholders,willhavetheexclusiverighttovotefortheelectionofdirectorsanddonothavecumulativevotingrights.Exceptasotherwiserequiredbylaw,holdersofcommonstockarenotentitledtovoteonanyamendmenttotheCertificateofIncorporation(includinganycertificateofdesignationsrelatingtoanyseriesofpreferredstock)thatrelatessolelytothetermsofanyoutstandingseriesofpreferredstockiftheholdersofsuchaffectedseriesareentitled,eitherseparatelyortogetherwiththeholdersofoneormoreothersuchseries,tovotethereonpursuanttotheCertificateofIncorporation(includinganycertificateofdesignationsrelatingtoanyseriesofpreferredstock)orpursuanttotheDelawareGeneralCorporationLaw("DGCL").Subjecttopriorrightsandpreferencesthatmaybeapplicabletoanyoutstandingsharesorseriesofpreferredstock,holdersofcommonstockareentitledtoreceiveratablyinproportiontothesharesofcommonstockheldbythemsuchdividends(payableincash,stockorotherwise),ifany,asmaybedeclaredfromtimetotimebyourboardofdirectorsoutoffundslegallyavailablefordividendpayments.Alloutstandingsharesofcommonstockarefullypaidandnon-assessable.Theholdersofcommonstockhavenopreferencesorrightsofconversion,exchange,pre-emptionorothersubscriptionrights.Therearenoredemptionorsinkingfundprovisionsapplicabletothecommonstock.Intheeventofanyvoluntaryorinvoluntaryliquidation,dissolutionorwinding-upofouraffairs,holdersofcommonstockwillbeentitledtoshareratablyinourassetsinproportiontothesharesofcommonstockheldbythemthatareremainingafterpaymentorprovisionforpaymentofallofourdebtsandobligationsandafterdistributioninfullofpreferentialamountstobedistributedtoholdersofoutstandingsharesofpreferredstock,ifany.

Anti-Takeover Provisions of Our Certificate of Incorporation and Bylaws

CertainprovisionsofDelawarelaw,ourCertificateofIncorporationandourBylawscouldmakethefollowingtransactionsmoredifficult:acquisitionsofusbymeansofatenderoffer,aproxycontestorotherwise;orremovalofourincumbentofficersanddirectors.Theseprovisionsmayalsohavetheeffectofpreventingchangesinourmanagement.Itispossiblethattheseprovisionscouldmakeitmoredifficulttoaccomplishorcoulddetertransactionsthatstockholdersmayotherwiseconsidertobeintheirbestinterestorinourbestinterests,includingtransactionsthatmightresultinapremiumoverthemarketpriceforourshares.

Theseprovisionsareexpectedtodiscouragecoercivetakeoverpracticesandinadequatetakeoverbids.Theseprovisionsarealsodesignedtoencouragepersonsseekingtoacquirecontrolofustofirstnegotiatewithus.Webelievethatthebenefitsofincreasedprotectionandourpotentialabilitytonegotiatewiththeproponentofanunfriendlyorunsolicitedproposaltoacquireorrestructureus

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outweighthedisadvantagesofdiscouragingtheseproposalsbecause,amongotherthings,negotiationoftheseproposalscouldresultinanimprovementoftheirterms.

Delaware Law

Section203oftheDGCLprohibitsaDelawarecorporation,includingthosewhosesecuritiesarelistedfortradingontheNYSE,fromengaginginanybusinesscombinationwithanyinterestedstockholderforaperiodofthreeyearsfollowingthedatethatthestockholderbecameaninterestedstockholder,unless:

• thetransactionisapprovedbytheboardofdirectorsbeforethedatetheinterestedstockholderattainedthatstatus;

• uponconsummationofthetransactionthatresultedinthestockholderbecominganinterestedstockholder,theinterestedstockholderownedatleast85%ofthevotingstockofthecorporationoutstandingatthetimethetransactioncommenced;or

• onoraftersuchtimethebusinesscombinationisapprovedbytheboardofdirectorsandauthorizedatameetingofstockholdersbyatleasttwothirdsoftheoutstandingvotingstockthatisnotownedbytheinterestedstockholder.

WemayelecttonotbesubjecttotheprovisionsofSection203oftheDGCL.

Amended and Restated Certificate of Incorporation and Amended and Restated Bylaws

ProvisionsofourCertificateofIncorporationandBylawsmaydelayordiscouragetransactionsinvolvinganactualorpotentialchangeincontrolorchangeinourmanagement,includingtransactionsinwhichstockholdersmightotherwisereceiveapremiumfortheirshares,ortransactionsthatourstockholdersmightotherwisedeemtobeintheirbestinterests.Therefore,theseprovisionscouldadverselyaffectthepriceofourcommonstock.

Amongotherthings,ourCertificateofIncorporationandBylaws:

• establishadvancenoticeprocedureswithregardtostockholderproposalsrelatingtothenominationofcandidatesforelectionasdirectorsornewbusinesstobebroughtbeforemeetingsofourstockholders.Theseproceduresprovidethatnoticeofstockholderproposalsmustbetimelygiveninwritingtoourcorporatesecretarypriortothemeetingatwhichtheactionistobetaken.Generally,tobetimely,noticemustbereceivedatourprincipalexecutiveofficesnotlessthan90daysnormorethan120dayspriortothefirstanniversarydateoftheannualmeetingfortheprecedingyear.OurBylawsspecifytherequirementsastoformandcontentofallstockholders"notices.Theserequirementsmayprecludestockholdersfrombringingmattersbeforethestockholdersatanannualorspecialmeeting;

• provideourboardofdirectorstheabilitytoauthorizeundesignatedpreferredstock.Thisabilitymakesitpossibleforourboardofdirectorstoissue,withoutstockholderapproval,preferredstockwithvotingorotherrightsorpreferencesthatcouldimpedethesuccessofanyattempttochangecontrolofus.Theseandotherprovisionsmayhavetheeffectofdeferringhostiletakeoversordelayingchangesincontrolormanagementofourcompany;

• providethattheauthorizednumberofdirectorsmaybechangedonlybyresolutionoftheboardofdirectors;

• providethatallvacancies,includingnewlycreateddirectorships,may,exceptasotherwiserequiredbylawor,ifapplicable,therightsofholdersofaseriesofpreferredstock,befilledbytheaffirmativevoteofamajorityofdirectorstheninoffice,eveniflessthanaquorum;

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• providethatanyactionrequiredorpermittedtobetakenbythestockholdersmustbeeffectedatadulycalledannualorspecialmeetingofstockholdersandmaynotbeeffectedbyanyconsentinwritinginlieuofameetingofsuchstockholders,subjecttotherightsoftheholdersofanyseriesofpreferredstockwithrespecttosuchseries;

• provideourCertificateofIncorporationandBylawsmaybeamendedbytheaffirmativevoteoftheholdersofatleasttwothirdsofourthenoutstandingcommonstock;

• providethatspecialmeetingsofourstockholdersmayonlybecalledbytheboardofdirectors,thechiefexecutiveofficerorthechairmanoftheboard;

• provideforourboardofdirectorstobedividedintothreeclassesofdirectors,witheachclassasnearlyequalinnumberaspossible,servingstaggeredthreeyearterms,otherthandirectorswhichmaybeelectedbyholdersofpreferredstock,ifany.Thissystemofelectingandremovingdirectorsmaytendtodiscourageathirdpartyfrommakingatenderofferorotherwiseattemptingtoobtaincontrolofus,becauseitgenerallymakesitmoredifficultforstockholderstoreplaceamajorityofthedirectors;

• providethatwerenounceanyinterestinexistingandfutureinvestmentsinotherentitiesby,orthebusinessopportunitiesof,AnteroInvestmentortheSponsorsoranyoftheirofficers,directors,agents,stockholders,members,partners,affiliatesandsubsidiaries(otherthanourdirectorsthatarepresentedbusinessopportunitiesintheircapacityasourdirectors)andthattheyhavenoobligationtoofferusthoseinvestmentsoropportunities;and

• providethatourBylawscanbeamendedorrepealedatanyregularorspecialmeetingofstockholdersorbytheboardofdirectors,includingtherequirementthatanyamendmentbythestockholdersatameetingbeupontheaffirmativevoteofatleast662/3%ofthesharesofcommonstockgenerallyentitledtovoteintheelectionofdirectors.

Limitation of Liability and Indemnification Matters

OurCertificateofIncorporationlimitstheliabilityofourdirectorsformonetarydamagesforbreachoftheirfiduciarydutyasdirectors,exceptforliabilitythatcannotbeeliminatedundertheDGCL.Delawarelawprovidesthatdirectorsofacompanywillnotbepersonallyliableformonetarydamagesforbreachoftheirfiduciarydutyasdirectors,exceptforliabilities:

• foranybreachoftheirdutyofloyaltytousorourstockholders;

• foractsoromissionsnotingoodfaithorwhichinvolveintentionalmisconductoraknowingviolationoflaw;

• forunlawfulpaymentofdividendorunlawfulstockrepurchaseorredemption,asprovidedunderSection174oftheDGCL;or

• foranytransactionfromwhichthedirectorderivedanimproperpersonalbenefit.

Anyamendment,repealormodificationoftheseprovisionswillbeprospectiveonlyandwouldnotaffectanylimitationonliabilityofadirectorforactsoromissionsthatoccurredpriortoanysuchamendment,repealormodification.

OurCertificateofIncorporationandBylawsalsoprovidethatwewillindemnifyourdirectorsandofficerstothefullestextentpermittedbyDelawarelaw.OurCertificateofIncorporationandBylawsalsopermitustopurchaseinsuranceonbehalfofanyofficer,director,employeeorotheragentforanyliabilityarisingoutofthatperson'sactionsasourofficer,director,employeeoragent,regardlessofwhetherDelawarelawwouldpermitindemnification.Wehaveenteredintoindemnificationagreementswitheachofourcurrentandfuturedirectorsandofficers.TheseagreementswillrequireustoindemnifytheseindividualstothefullestextentpermittedunderDelawarelawagainstliabilitythatmay

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arisebyreasonoftheirservicetous,andtoadvanceexpensesincurredasaresultofanyproceedingagainstthemastowhichtheycouldbeindemnified.WebelievethatthelimitationofliabilityprovisioninourCertificateofIncorporationandtheindemnificationagreementswillfacilitateourabilitytocontinuetoattractandretainqualifiedindividualstoserveasdirectorsandofficers.

Transfer Agent and Registrar

ThetransferagentandregistrarforourcommonstockisAmericanStockTransfer&TrustCompany.

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MATERIAL U.S. FEDERAL INCOME TAX CONSIDERATIONS FOR NON-U.S. HOLDERS

ThefollowingisasummaryofthematerialU.S.federalincometaxconsiderationsrelatedtothepurchase,ownershipanddispositionofourcommonstockbyanon-U.S.holder(asdefinedbelow),thatholdsourcommonstockasa"capitalasset"(generallypropertyheldforinvestment).ThissummaryisbasedontheprovisionsoftheInternalRevenueCodeof1986,asamended,ortheCode,U.S.Treasuryregulations,administrativerulingsandjudicialdecisions,allasineffectonthedatehereof,andallofwhicharesubjecttochange,possiblywithretroactiveeffect.WehavenotsoughtanyrulingfromtheInternalRevenueService,ortheIRS,withrespecttothestatementsmadeandtheconclusionsreachedinthefollowingsummary,andtherecanbenoassurancethattheIRSoracourtwillagreewithsuchstatementsandconclusions.

ThissummarydoesnotaddressallaspectsofU.S.federalincometaxationthatmayberelevanttonon-U.S.holdersinlightoftheirpersonalcircumstances.Inaddition,thissummarydoesnotaddresstheMedicaretaxoncertaininvestmentincome,U.S.federalestateorgifttaxlaws,anystate,localornon-U.S.taxlawsoranytaxtreaties.ThissummaryalsodoesnotaddresstaxconsiderationsapplicabletoinvestorsthatmaybesubjecttospecialtreatmentundertheU.S.federalincometaxlaws,suchas:

• banks,insurancecompaniesorotherfinancialinstitutions;

• tax-exemptorgovernmentalorganizations;

• qualifiedforeignpensionfunds;

• dealersinsecuritiesorforeigncurrencies;

• tradersinsecuritiesthatusethemark-to-marketmethodofaccountingforU.S.federalincometaxpurposes;

• "controlledforeigncorporations,""passiveforeigninvestmentcompanies"andcorporationsthataccumulateearningstoavoidU.S.federalincometax;

• personssubjecttothealternativeminimumtax;

• partnershipsorotherpass-throughentitiesforU.S.federalincometaxpurposesorholdersofintereststherein;

• personsdeemedtosellourcommonstockundertheconstructivesaleprovisionsoftheCode;

• personsthatacquiredourcommonstockthroughtheexerciseofemployeestockoptionsorotherwiseascompensationorthroughatax-qualifiedretirementplan;

• certainformercitizensorlong-termresidentsoftheUnitedStates;

• realestateinvestmenttrustsorregulatedinvestmentcompanies;

• personsthatholdourcommonstockaspartofastraddle,appreciatedfinancialposition,syntheticsecurity,hedge,conversiontransactionorotherintegratedinvestmentorriskreductiontransaction;and

• personsthatholdinexcessof5%ofourcommonstock.

YOU ARE ENCOURAGED TO CONSULT YOUR TAX ADVISOR WITH RESPECT TO THE APPLICATION OF THE U.S. FEDERALINCOME TAX LAWS TO YOUR PARTICULAR SITUATION, AS WELL AS ANY TAX CONSEQUENCES OF THE PURCHASE, OWNERSHIPAND DISPOSITION OF OUR COMMON STOCK ARISING UNDER THE U.S. FEDERAL, ESTATE OR GIFT TAX LAWS OR UNDER THE LAWSOF ANY STATE, LOCAL, NON-U.S. OR OTHER TAXING JURISDICTION OR UNDER ANY APPLICABLE INCOME TAX TREATY.

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Non-U.S. Holder Defined

Forpurposesofthisdiscussion,anon-U.S.holderisabeneficialownerofourcommonstockthatisnotforU.S.federalincometaxpurposesapartnershiporanyofthefollowing:

• anindividualwhoisacitizenorresidentoftheUnitedStates;

• acorporation(orotherentitytreatedasacorporationforU.S.federalincometaxpurposes)createdororganizedinorunderthelawsoftheUnitedStates,anystatethereofortheDistrictofColumbia;

• anestatetheincomeofwhichissubjecttoU.S.federalincometaxregardlessofitssource;or

• atrust(i)whoseadministrationissubjecttotheprimarysupervisionofaU.S.courtandwhichhasoneormoreUnitedStatespersonswhohavetheauthoritytocontrolallsubstantialdecisionsofthetrustor(ii)whichhasmadeavalidelectionunderapplicableU.S.TreasuryregulationstobetreatedasaUnitedStatesperson.

Ifapartnership(includinganentityorarrangementtreatedasapartnershipforU.S.federalincometaxpurposes)holdsourcommonstock,thetaxtreatmentofapartnerinthepartnershipgenerallywilldependuponthestatusofthepartner,upontheactivitiesofthepartnershipanduponcertaindeterminationsmadeatthepartnerlevel.Accordingly,weurgepartnersinpartnerships(includingentitiesorarrangementstreatedaspartnershipsforU.S.federalincometaxpurposes)consideringthepurchaseofourcommonstocktoconsulttheirtaxadvisorsregardingtheU.S.federalincometaxconsiderationsofthepurchase,ownershipanddispositionofourcommonstockbysuchpartnership.

Distributions

Wedonotplantomakeanydistributionsonourcommonstockfortheforeseeablefuture.However,ifwedomakedistributionsofcashorotherpropertyonourcommonstock,suchdistributionswillconstitutedividendsforU.S.federalincometaxpurposestotheextentpaidfromourcurrentoraccumulatedearningsandprofits,asdeterminedunderU.S.federalincometaxprinciples.Totheextentthosedistributionsexceedourcurrentandaccumulatedearningsandprofits,thedistributionswillbetreatedasanon-taxablereturnofcapitaltotheextentofthenon-U.S.holder'staxbasisinourcommonstockandthereafterascapitalgainfromthesaleorexchangeofsuchcommonstock.Pleaseread"—GainonDispositionofCommonStock."SubjecttothewithholdingrequirementsunderFATCA(asdefinedbelow)andwithrespecttoeffectivelyconnecteddividends,eachofwhichisdiscussedbelow,anydistributionmadetoanon-U.S.holderonourcommonstockgenerallywillbesubjecttoU.S.withholdingtaxatarateof30%ofthegrossamountofthedistributionunlessanapplicableincometaxtreatyprovidesforalowerrate.Toreceivethebenefitofareducedtreatyrate,anon-U.S.holdermustprovidetheapplicablewithholdingagentwithanIRSFormW-8BENorIRSFormW-8BEN-E(orotherapplicableorsuccessorform)certifyingqualificationforthereducedrate.

Dividendspaidtoanon-U.S.holderthatareeffectivelyconnectedwithatradeorbusinessconductedbythenon-U.S.holderintheUnitedStates(and,ifrequiredbyanapplicableincometaxtreaty,aretreatedasattributabletoapermanentestablishmentmaintainedbythenon-U.S.holderintheUnitedStates)generallywillbetaxedonanetincomebasisattheratesandinthemannergenerallyapplicabletoUnitedStatespersons(asdefinedundertheCode).SucheffectivelyconnecteddividendswillnotbesubjecttoU.S.withholdingtaxifthenon-U.S.holdersatisfiescertaincertificationrequirementsbyprovidingtheapplicablewithholdingagentaproperlyexecutedIRSFormW-8ECIcertifyingeligibilityforexemption.Ifthenon-U.S.holderisanon-U.S.corporation,itmayalsobesubjecttoa"branchprofitstax"(ata30%rateorsuchlowerrateasmaybespecifiedbyanapplicableincometaxtreaty)onitseffectivelyconnectedearningsandprofits(asadjustedforcertainitems).

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Gain on Disposition of Common Stock

Subjecttothediscussionbelowunder"—AdditionalWithholdingRequirementsunderFATCA,"anon-U.S.holdergenerallywillnotbesubjecttoU.S.federalincometaxonanygainrealizeduponthesaleorotherdispositionofourcommonstockunless:

• thenon-U.S.holderisanindividualwhoispresentintheUnitedStatesforaperiodorperiodsaggregating183daysormoreduringthecalendaryearinwhichthesaleordispositionoccursandcertainotherconditionsaremet;

• thegainiseffectivelyconnectedwithatradeorbusinessconductedbythenon-U.S.holderintheUnitedStates(and,ifrequiredbyanapplicableincometaxtreaty,isattributabletoapermanentestablishmentmaintainedbythenon-U.S.holderintheUnitedStates);or

• ourcommonstockconstitutesaUnitedStatesrealpropertyinterestbyreasonofourstatusasaUnitedStatesrealpropertyholdingcorporation,orUSRPHC,forU.S.federalincometaxpurposes.

Anon-U.S.holderdescribedinthefirstbulletpointabovewillbesubjecttoU.S.federalincometaxatarateof30%(orsuchlowerrateasmaybespecifiedbyanapplicableincometaxtreaty)ontheamountofsuchgain,whichgenerallymaybeoffsetbycertainU.S.sourcecapitallosses.

Anon-U.S.holderwhosegainisdescribedinthesecondbulletpointaboveor,subjecttotheexceptionsdescribedinthenextparagraph,thethirdbulletpointabove,generallywillbetaxedonanetincomebasisattheratesandinthemannergenerallyapplicabletoUnitedStatespersons(asdefinedundertheCode)unlessanapplicableincometaxtreatyprovidesotherwise.Ifthenon-U.S.holderisacorporation,itmayalsobesubjecttoabranchprofitstax(ata30%rateorsuchlowerrateasspecifiedbyanapplicableincometaxtreaty)onitseffectivelyconnectedearningsandprofits(asadjustedforcertainitems),whichwillincludesuchgain.

Generally,acorporationisaUSRPHCifthefairmarketvalueofitsUnitedStatesrealpropertyinterestsequalsorexceeds50%ofthesumofthefairmarketvalueofitsworldwiderealpropertyinterestsanditsotherassetsusedorheldforuseinatradeorbusiness.Webelievethatwecurrentlyare,andexpecttoremainfortheforeseeablefuture,aUSRPHCforU.S.federalincometaxpurposes.However,aslongasourcommonstockcontinuestoberegularlytradedonanestablishedsecuritiesmarket,onlyanon-U.S.holderthatactuallyorconstructivelyowns,orownedatanytimeduringtheshorterofthefive-yearperiodendingonthedateofthedispositionorthenon-U.S.holder'sholdingperiodforthecommonstock,morethan5%ofourcommonstockwillbetaxableongainrealizedonthedispositionofourcommonstockasaresultofourstatusasaUSRPHC.Ifourcommonstockwerenotconsideredtoberegularlytradedonanestablishedsecuritiesmarketduringthecalendaryearinwhichtherelevantdispositionbyanon-U.S.holderoccurs,suchholder(regardlessofthepercentageofourcommonstockheldbysuchholder)wouldsuchholderwillbesubjecttoU.S.federalincometaxonataxabledispositionofourcommonstock(asdescribedintheprecedingparagraph),anda15%withholdingtaxwouldapplytothegrossproceedsfromsuchdisposition.

Non-U.S.holdersshouldconsulttheirtaxadvisorswithrespecttotheapplicationoftheforegoingrulestotheirownershipanddispositionofourcommonstock.

Backup Withholding and Information Reporting

Anydividendspaidtoanon-U.S.holdermustbereportedannuallytotheIRSandtothenon-U.S.holder.Copiesoftheseinformationreturnsmaybemadeavailabletothetaxauthoritiesinthecountryinwhichthenon-U.S.holderresidesorisestablished.

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Paymentsofdividendstoanon-U.S.holdergenerallywillnotbesubjecttobackupwithholdingifthenon-U.S.holderestablishesanexemptionbyproperlycertifyingitsnon-U.S.statusonanIRSFormW-8BEN,IRSFormW-8BEN-EorotherappropriateversionofIRSFormW-8.

Paymentsoftheproceedsfromasaleorotherdispositionbyanon-U.S.holderofourcommonstockeffectedbyorthroughaU.S.officeofabrokergenerallywillbesubjecttoinformationreportingandbackupwithholding(attheapplicablerate)unlessthenon-U.S.holderestablishesanexemptionbyproperlycertifyingitsnon-U.S.statusonanIRSFormW-8BEN,IRSFormW-8BEN-EorotherappropriateversionofIRSFormW-8andcertainotherconditionsaremet.InformationreportingandbackupwithholdinggenerallywillnotapplytoanypaymentoftheproceedsfromasaleorotherdispositionofourcommonstockeffectedoutsidetheUnitedStatesbyanon-U.S.officeofabroker.However,unlesssuchbrokerhasdocumentaryevidenceinitsrecordsthattheholderisnotaUnitedStatespersonandcertainotherconditionsaremet,orthenon-U.S.holderotherwiseestablishesanexemption,informationreportingwillapplytoapaymentoftheproceedsofthedispositionofourcommonstockeffectedoutsidetheUnitedStatesbysuchabrokerifithascertainrelationshipswithintheUnitedStates.

Backupwithholdingisnotanadditionaltax.Rather,theU.S.incometaxliability(ifany)ofpersonssubjecttobackupwithholdingwillbereducedbytheamountoftaxwithheld.Ifbackupwithholdingresultsinanoverpaymentoftaxes,arefundmaybeobtained,providedthattherequiredinformationistimelyfurnishedtotheIRS.

Additional Withholding Requirements under FATCA

Sections1471through1474oftheCode,andtheTreasuryregulationsandadministrativeguidanceissuedthereunder("FATCA"),imposea30%withholdingtaxonanydividendspaidonourcommonstockandonthegrossproceedsfromadispositionofourcommonstock(ifsuchdispositionoccursafterDecember31,2018),ineachcaseifpaidtoa"foreignfinancialinstitution"ora"non-financialforeignentity"(eachasdefinedintheCode)(including,insomecases,whensuchforeignfinancialinstitutionornon-financialforeignentityisactingasanintermediary),unless(i)inthecaseofaforeignfinancialinstitution,suchinstitutionentersintoanagreementwiththeU.S.governmenttowithholdoncertainpaymentsandtocollectandprovidetotheU.S.taxauthoritiessubstantialinformationregardingU.S.accountholdersofsuchinstitution(whichincludescertainequityanddebtholdersofsuchinstitution,aswellascertainaccountholdersthatarenon-U.S.entitieswithU.S.owners),(ii)inthecaseofanon-financialforeignentity,suchentitycertifiesthatitdoesnothaveany"substantialUnitedStatesowners"(asdefinedintheCode)orprovidestheapplicablewithholdingagentwithacertificationidentifyingthedirectandindirectsubstantialUnitedStatesownersoftheentity(ineithercase,generallyonanIRSFormW-8BEN-E),or(iii)theforeignfinancialinstitutionornon-financialforeignentityotherwisequalifiesforanexemptionfromtheserulesandprovidesappropriatedocumentation(suchasanIRSFormW-8BEN-E).ForeignfinancialinstitutionslocatedinjurisdictionsthathaveanintergovernmentalagreementwiththeUnitedStatesgoverningtheserulesmaybesubjecttodifferentrules.Undercertaincircumstances,aholdermightbeeligibleforrefundsorcreditsofsuchtaxes.

INVESTORSCONSIDERINGTHEPURCHASEOFOURCOMMONSTOCKAREURGEDTOCONSULTTHEIROWNTAXADVISORSREGARDINGTHEAPPLICATIONOFTHEU.S.FEDERALINCOMETAXLAWSTOTHEIRPARTICULARSITUATIONSANDTHEAPPLICABILITYANDEFFECTOFU.S.FEDERALESTATEANDGIFTTAXLAWSANDANYSTATE,LOCALORNON-U.S.TAXLAWSANDTAXTREATIES.

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UNDERWRITING

CreditSuisseSecurities(USA)LLCandJ.P.MorganSecuritiesLLCareactingasjointbook-runningmanagersofthisoffering.Underthetermsofanunderwritingagreement,whichwewillfileasanexhibittoaCurrentReportonForm8-K,whichwillbeincorporatedbyreferenceinthisprospectus,eachoftheunderwritersnamedbelowhasseverallyagreedtopurchasefromusthenumberofsharesofcommonstockshownoppositeitsnamebelow:

Theunderwritingagreementwillprovidethattheunderwriters'obligationtopurchasesharesofcommonstockdependsonthesatisfactionoftheconditionscontainedintheunderwritingagreement,including:

• theobligationtopurchaseallofthesharesofcommonstockofferedhereby(otherthanthosesharesofcommonstockcoveredbytheiroptiontopurchaseadditionalsharesasdescribedbelow),ifanyofthesharesarepurchased;

• therepresentationsandwarrantiesmadebyustotheunderwritersbeingtrue;

• therehavingbeennomaterialchangeinourbusinessorthefinancialmarkets;and

• ourdeliveryofcustomaryclosingdocumentstotheunderwriters.

Commissions and Expenses

Theunderwritersmayreceivefrompurchasersofthecommonstocknormalbrokeragecommissionsinamountsagreedwithsuchpurchasers.TheunderwritersmayofferthecommonstockfromtimetotimeforsaleinoneormoretransactionsontheNYSE,intheover-the-countermarket,throughnegotiatedtransactionsorotherwiseatmarketpricesprevailingatthetimeofsale,atpricesrelatedtoprevailingmarketpricesoratnegotiatedprices,subjecttoreceiptandacceptancebyitandsubjecttoitsrighttorejectanyorderinwholeorinpart.Inconnectionwiththesaleofthecommonstockofferedhereby,theunderwritersmaybedeemedtohavereceivedcompensationintheformofunderwritingdiscounts.Theunderwritersmayeffectsuchtransactionsbysellingcommonstocktoorthroughdealers,andsuchdealersmayreceivecompensationintheformofdiscounts,concessionsorcommissionsfromtheunderwritersand/orpurchasersofcommonstockforwhomtheymayactasagentsortowhomtheymaysellasprincipal.

Wewillpaytheexpensesincurredinconnectionwiththisoffering.Theexpensesofthisoffering(otherthantheunderwritingdiscountsandcommissions)thatarepayablebyusareestimatedtobeapproximately$475,000.

Option to Purchase Additional Shares

Wehavegrantedtheunderwritersanoptionexercisablefor30daysafterthedateofthisprospectus,topurchase,fromtimetotime,inwholeorinpart,uptoanaggregateof4,012,500sharesatthepublicofferingpricelessunderwritingdiscountsandcommissionssolelytocoverover-allotments.Totheextentthattheoptionisexercised,eachunderwriterwillbeobligated,subjecttocertainconditions,topurchaseitsprorataportionoftheseadditionalsharesbasedontheunderwriter'sunderwritingcommitmentinthisofferingasindicatedinthetableatthebeginningofthis"Underwriting"section.

Underwriters Number of

Shares CreditSuisseSecurities(USA)LLC J.P.MorganSecuritiesLLC Total 26,750,000

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Lock-Up Agreements

We,theCompany'sdirectorsandofficersandcertainsignificantstockholdershaveagreedthat,subjecttocertainexceptions,withoutthepriorwrittenconsentofCreditSuisseSecurities(USA)LLCandJ.P.MorganSecuritiesLLC,we,theCompany'sdirectorsandofficersandcertainsignificantstockholderswillnotdirectlyorindirectly,(1)offerforsale,sell,pledgeorotherwisedisposeof(orenterintoanytransactionordevicethatisdesignedto,orcouldbeexpectedto,resultinthedispositionbyanypersonatanytimeinthefutureof)anysharesofcommonstock(otherthan(i)commonstockandsharesissuedpursuanttoemployeebenefitplans,qualifiedstockoptionplansorotheremployeecompensationplansexistingonthedateofthisprospectusordescribedherein,(ii)commonstocksoldpursuanttoRule10b5-1plansestablishedpriortothedateofthisprospectusor(iii)withrespecttocertainsignificantstockholders,sharesofcommonstockdistributedbysuchstockholderstotheirrespectiveequityholders)orsellorgrantoptions,rightsorwarrantswithrespecttoanysharesofcommonstock,(2)enterintoanyswaporotherderivativestransactionthattransferstoanother,inwholeorinpart,anyoftheeconomicbenefitsorrisksofownershipofthecommonstock,whetheranysuchtransactiondescribedinclause(1)orclause(2)istobesettledbydeliveryofthecommonstockorothersecurities,incashorotherwise,(3)fileorcausetobefiledaregistrationstatement,includinganyamendmentsthereto,withrespecttotheregistrationofanysharesofcommonstockorsecuritiesconvertible,exercisableorexchangeableintocommonstockoranyofourothersecurities(otherthananyregistrationstatementonFormS-8),or(4)publiclydisclosetheintentiontodoanyoftheforegoingforaperiodof45daysafterthedateofthisprospectus.

CreditSuisseSecurities(USA)LLCandJ.P.MorganSecuritiesLLC,intheirsolediscretion,mayreleasethecommonstockandothersecuritiessubjecttothelock-upagreementsdescribedaboveinwholeorinpartatanytimewithorwithoutnotice.Whendeterminingwhetherornottoreleasecommonstockandothersecuritiesfromlock-upagreements,CreditSuisseSecurities(USA)LLCandJ.P.MorganSecuritiesLLCwillconsider,amongotherfactors,theholder'sreasonsforrequestingtherelease,thenumberofsharesofcommonstockandothersecuritiesforwhichthereleaseisbeingrequestedandmarketconditionsatthetime.

Indemnification

Wehaveagreedtoindemnifytheunderwritersagainstcertainliabilities,includingliabilitiesundertheSecuritiesAct,andtocontributetopaymentsthattheunderwritersmayberequiredtomakefortheseliabilities.

Stabilization, Short Positions and Penalty Bids

Theunderwritersmayengageinstabilizingtransactions,shortsalesandpurchasestocoverpositionscreatedbyshortsales,andpenaltybidsorpurchasesforthepurposeofpegging,fixingormaintainingthepriceofthecommonstock,inaccordancewithRegulationMundertheExchangeAct.

• Stabilizingtransactionspermitbidstopurchasetheunderlyingsecuritysolongasthestabilizingbidsdonotexceedaspecifiedmaximum.

• Ashortpositioninvolvesasalebytheunderwritersofsharesinexcessofthenumberofsharestheunderwritersareobligatedtopurchaseinthisoffering,whichcreatesthesyndicateshortposition.Thisshortpositionmaybeeitheracoveredshortpositionoranakedshortposition.Inacoveredshortposition,thenumberofsharesinvolvedinthesalesmadebytheunderwritersinexcessofthenumberofsharestheyareobligatedtopurchaseisnotgreaterthanthenumberofsharesthattheymaypurchasebyexercisingtheirover-allotmentoption.Inanakedshortposition,thenumberofsharesinvolvedisgreaterthanthenumberofsharesintheirover-allotmentoption.Theunderwritersmaycloseoutanyshortpositionbyeitherexercisingtheirover-allotmentoptionand/orpurchasingsharesintheopenmarket.Indeterminingthe

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sourceofsharestocloseouttheshortposition,theunderwriterswillconsider,amongotherthings,thepriceofsharesavailableforpurchaseintheopenmarketascomparedtothepriceatwhichtheymaypurchasesharesthroughtheiroptiontopurchaseadditionalshares.Anakedshortpositionismorelikelytobecreatediftheunderwritersareconcernedthattherecouldbedownwardpressureonthepriceofthesharesintheopenmarketafterpricingthatcouldadverselyaffectinvestorswhopurchaseinthisoffering.

• Syndicatecoveringtransactionsinvolvepurchasesofthecommonstockintheopenmarketafterthedistributionhasbeencompletedinordertocoversyndicateshortpositions.

• Penaltybidspermittherepresentativestoreclaimasellingconcessionfromasyndicatememberwhenthecommonstockoriginallysoldbythesyndicatememberispurchasedinastabilizingorsyndicatecoveringtransactiontocoversyndicateshortpositions.

Thesestabilizingtransactions,syndicatecoveringtransactionsandpenaltybidsmayhavetheeffectofraisingormaintainingthemarketpriceofourcommonstockorpreventingorretardingadeclineinthemarketpriceofthecommonstock.Asaresult,thepriceofthecommonstockmaybehigherthanthepricethatmightotherwiseexistintheopenmarket.ThesetransactionsmaybeeffectedontheNYSEorotherwiseand,ifcommenced,maybediscontinuedatanytime.

Neitherwenoranyoftheunderwritersmakeanyrepresentationorpredictionastothedirectionormagnitudeofanyeffectthatthetransactionsdescribedabovemayhaveonthepriceofthecommonstock.Inaddition,neitherwenoranyoftheunderwritersmakeanyrepresentationthattherepresentativeswillengageinthesestabilizingtransactionsorthatanytransaction,oncecommenced,willnotbediscontinuedwithoutnotice.

Electronic Distribution

AprospectusinelectronicformatmaybemadeavailableontheInternetsitesorthroughotheronlineservicesmaintainedbytheunderwriters,orbytheiraffiliates.Inthosecases,prospectiveinvestorsmayviewofferingtermsonlineandprospectiveinvestorsmaybeallowedtoplaceordersonline.Theunderwritersmayagreetoallocateaspecificnumberofsharesforsaletoonlinebrokerageaccountholders.Anysuchallocationforonlinedistributionswillbemadebytheunderwritersonthesamebasisasotherallocations.

Otherthantheprospectusinelectronicformat,theinformationonanyunderwriter'swebsiteandanyinformationcontainedinanyotherwebsitemaintainedbytheunderwritersisnotpartoftheprospectusortheregistrationstatementofwhichthisprospectusformsapart,hasnotbeenapprovedand/orendorsedbyusoranyunderwriterinitscapacityasunderwriterandshouldnotberelieduponbyinvestors.

New York Stock Exchange

OurcommonstockislistedontheNewYorkStockExchangeunderthesymbol"AR."

Stamp Taxes

Ifyoupurchasesharesofcommonstockofferedinthisprospectus,youmayberequiredtopaystamptaxesandotherchargesunderthelawsandpracticesofthecountryofpurchase,inadditiontotheofferingpricelistedonthecoverpageofthisprospectus.

Other Relationships

Theunderwritersandtheirrespectiveaffiliatesarefullservicefinancialinstitutionsengagedinvariousactivities,whichmayincludesecuritiestrading,commercialandinvestmentbanking,financial

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advisory,investmentmanagement,investmentresearch,principalinvestment,hedging,financingandbrokerageactivities.Theunderwritersandtheirrespectiveaffiliateshave,fromtimetotime,performed,andmayinthefutureperform,variousfinancialadvisoryandinvestmentbankingservicesforus,forwhichtheyreceivedorwillreceivecustomaryfeesandexpenses.Inparticular,affiliatesofCreditSuisseSecurities(USA)LLCandJ.P.MorganSecuritiesLLCarelendersunderourcreditfacility.Additionally,anaffiliateofJ.P.MorganSecuritiesLLCactsasadministrativeagentunderourcreditfacility.

Intheordinarycourseoftheirvariousbusinessactivities,theunderwritersandtheirrespectiveaffiliatesmaymakeorholdabroadarrayofinvestments,includingservingascounterpartiestocertainderivativeandhedgingarrangements,andactivelytradedebtandequitysecurities(orrelatedderivativesecurities)andfinancialinstruments(includingbankloans)fortheirownaccountandfortheaccountsoftheircustomers,andsuchinvestmentandsecuritiesactivitiesmayinvolvesecuritiesand/orinstrumentsofus.Theunderwritersandtheirrespectiveaffiliatesmayalsomakeinvestmentrecommendationsand/orpublishorexpressindependentresearchviewsinrespectofsuchsecuritiesorinstrumentsandmayatanytimehold,orrecommendtoclientsthattheyacquire,longand/orshortpositionsinsuchsecuritiesandinstruments.

Selling Restrictions

European Economic Area

ThisdocumentisnotaprospectusforthepurposesoftheProspectusDirective(asdefinedbelow).

InrelationtoeachmemberstateoftheEuropeanEconomicAreathathasimplementedtheProspectusDirective(asdefinedbelow)(each,arelevantmemberstate)witheffectfromandincludingthedateonwhichtheProspectusDirectiveisimplementedinthatRelevantMemberState(therelevantimplementationdate),anoffertothepublicofanysharesofourcommonstockwhicharethesubjectoftheofferingcontemplatedbythisprospectus,maynotbemadeinthatrelevantmemberstateotherthan:

(a) toanylegalentitywhichisaqualifiedinvestorasdefinedintheProspectusDirective;

(b) tofewerthan100or,iftherelevantmemberstatehasimplementedtherelevantprovisionofthe2010PDAmendingDirective(asdefinedbelow),150naturalorlegalpersons(otherthanqualifiedinvestorsasdefinedintheProspectusDirective),aspermittedundertheProspectusDirective,subjecttoobtainingthepriorconsentoftherelevantDealerorDealersforanysuchoffer;or

(c) inanyothercircumstancesfailingwithinArticle3(2)oftheProspectusDirective,

providedthatnosuchofferofourcommonstockshallresultinarequirementforthepublicationbyusoranyunderwriterofaprospectuspursuanttoArticle3oftheProspectusDirective.

Forpurposesofthisprovision,theexpressionan"offertothepublic"inrelationtoanysharesofourcommonstockinanyrelevantmemberstatemeansthecommunicationinanyformandbyanymeansofsufficientinformationonthetermsoftheofferandourcommonstocktobeofferedsoastoenableaninvestortodecidetopurchaseorsubscribeforourcommonstock,asthesamemaybevariedinthatrelevantmemberstatebyanymeasureimplementingtheProspectusDirectiveinthatrelevantmemberstateandtheexpression"ProspectusDirective"meansDirective2003/71/EC(andamendmentsthereto,includingthe2010PDAmendingDirective,totheextentimplementedintherelevantmemberstate),andincludesanyrelevantimplementingmeasureineachrelevantmemberstateandtheexpression2010PDAmendingDirectivemeansDirective2010/73/EU.

Thesellersofthesharesofourcommonstockhavenotauthorizedanddonotauthorizethemakingofanyofferofsharesthroughanyfinancialintermediaryontheirbehalf,otherthanoffers

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madebytheunderwriterswithaviewtothefinalplacementofthesharesascontemplatedinthisprospectus.Accordingly,nopurchaseroftheshares,otherthantheunderwriters,isauthorizedtomakeanyfurtherofferofthesharesonbehalfofthesellersortheunderwriters.

United Kingdom

Thisprospectusisonlybeingdistributedto,andisonlydirectedat,personsintheUnitedKingdomthatarequalifiedinvestorswithinthemeaningofArticle2(1)(e)oftheProspectusDirective,whichwerefertoasqualifiedinvestors,thatarealso(i)investmentprofessionalsfallingwithinArticle19(5)oftheFinancialServicesandMarketsAct2000(FinancialPromotion)Order2005,whichwerefertoastheOrder,or(ii)highnetworthentities,fallingwithinArticle49(2)(a)to(d)oftheOrder,and(iii)anyotherpersontowhomitmaylawfullybecommunicatedpursuanttotheOrder,allsuchpersonswhichwerefertotogetherasrelevantpersons.Thisprospectusanditscontentsareconfidentialandshouldnotbedistributed,publishedorreproduced(inwholeorinpart)ordisclosedbyrecipientstoanyotherpersonsintheUnitedKingdom.Anyinvestmentactivitytowhichthisprospectusrelateswillonlybeavailableto,andwillonlybeengagedwith,relevantpersons.AnypersonintheUnitedKingdomthatisnotarelevantpersonshouldnotactorrelyonthisdocumentoranyofitscontents.

AllapplicableprovisionsoftheFinancialServicesandMarketsAct2000(asamended)mustbecompliedwithinrespecttoanythingdonebyanypersoninrelationtoourcommonstockin,fromorotherwiseinvolvingtheUnitedKingdom.

France

NeitherthisprospectusnoranyotherofferingmaterialrelatingtothesharesdescribedinthisprospectushasbeensubmittedtotheclearanceproceduresoftheAutoritédesMarchésFinanciersorofthecompetentauthorityofanothermemberstateoftheEuropeanEconomicAreaandnotifiedtotheAutoritédesMarchésFinanciers.Theshareshavenotbeenofferedorsoldandwillnotbeofferedorsold,directlyorindirectly,tothepublicinFrance.Neitherthisprospectusnoranyotherofferingmaterialrelatingtotheshareshasbeenorwillbe:

(a) released,issued,distributedorcausedtobereleased,issuedordistributedtothepublicinFrance;or

(b) usedinconnectionwithanyofferforsubscriptionorsaleofthesharestothepublicinFrance.

Suchoffers,salesanddistributionswillbemadeinFranceonly:

(a) toqualifiedinvestors(investisseursqualifiés)and/ortoarestrictedcircleofinvestors(cerclerestreintd'investisseurs),ineachcaseinvestingfortheirownaccount,allasdefinedin,andinaccordancewitharticlesL.411-2,D.411-1,D.411-2,D.734-1,D.744-1,D.754-1andD.764-1oftheFrenchCodemonétaireetfinancier;

(b) toinvestmentservicesprovidersauthorizedtoengageinportfoliomanagementonbehalfofthirdparties;or

(c) inatransactionthat,inaccordancewitharticleL.411-2-II-1°-or-2°-or3°oftheFrenchCodemonétaireetfinancierandarticle211-2oftheGeneralRegulations(RèglementGénéral)oftheAutoritédesMarchésFinanciers,doesnotconstituteapublicoffer(appelpublicàl'épargne).

Thesharesmayberesolddirectlyorindirectly,onlyincompliancewitharticlesL.411-1,L.411-2,L.412-1andL.621-8throughL.621-8-3oftheFrenchCodemonétaireetfinancier.

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Switzerland

Thisdocument,aswellasanyothermaterialrelatingtotheshareswhicharethesubjectoftheofferingcontemplatedbythisprospectus,donotconstituteanissueprospectuspursuanttoArticle652aand/or1156oftheSwissCodeofObligations.TheshareswillnotbelistedontheSIXSwissExchangeand,therefore,thedocumentsrelatingtotheshares,including,butnotlimitedto,thisdocument,donotclaimtocomplywiththedisclosurestandardsofthelistingrulesoftheSIXSwissExchange.ThesharesarebeingofferedinSwitzerlandbywayofaprivateplacement,i.e.,toasmallnumberofselectedinvestorsonly,withoutanypublicofferandonlytoinvestorswhodonotpurchasetheshareswiththeintentiontodistributethemtothepublic.Theinvestorswillbeindividuallyapproachedbytheissuerfromtimetotime.Thisdocument,aswellasanyothermaterialrelatingtotheshares,ispersonalandconfidentialanddonotconstituteanoffertoanyotherperson.Thisdocumentmayonlybeusedbythoseinvestorstowhomithasbeenhandedoutinconnectionwiththeofferingdescribedhereinandmayneitherdirectlynorindirectlybedistributedormadeavailabletootherpersonswithoutexpressconsentoftheissuer.Itmaynotbeusedinconnectionwithanyotherofferandshallinparticularnotbecopiedand/ordistributedtothepublicin(orfrom)Switzerland.

Hong Kong

ThesharesofourcommonstockofferedherebymaynotbeofferedorsoldinHongKong,bymeansofanydocument,otherthan(a)to"professionalinvestors"asdefinedintheSecuritiesandFuturesOrdinance(Cap.571,LawsofHongKong)andanyrulesmadeunderthatOrdinance,or(b)inothercircumstanceswhichdonotresultinthedocumentbeinga"prospectus"asdefinedintheCompaniesOrdinance(Cap.32,LawsofHongKong),orwhichdonotconstituteanoffertothepublicwithinthemeaningofthatOrdinance.Noadvertisement,invitationordocumentrelatingtothesharesofourcommonstockofferedherebymaybeissuedormaybeinthepossessionofanypersonforthepurposeoftheissue,whetherinHongKongorelsewhere,whichisdirectedat,orthecontentsofwhicharelikelytobereadby,thepublicinHongKong(exceptifpermittedtodosounderthelawsofHongKong)otherthanwithrespecttothesharesofourcommonstockofferedherebywhichareintendedtobedisposedofonlytopersonsoutsideHongKongoronlyto"professionalinvestors"asdefinedintheSecuritiesandFuturesOrdinance(Cap.571,LawsofHongKong)oranyrulesmadeunderthatOrdinance.

People's Republic of China

ThecommonstockmaynotbeofferedorsolddirectlyorindirectlyinthePeople'sRepublicofChina,orthePRC(which,forsuchpurposes,doesnotincludetheHongKongorMacauSpecialAdministrativeRegionsorTaiwan),exceptpursuanttoapplicablelawsandregulationsofthePRC.Neitherthisprospectusnoranymaterialorinformationcontainedhereinrelatingtothecommonstock,whichhavenotbeenandwillnotbesubmittedtoorapproved/verifiedbyorregisteredwiththeChinaSecuritiesRegulatoryCommission,orCSRC,orotherrelevantgovernmentalauthoritiesinthePRCpursuanttorelevantlawsandregulations,maybesuppliedtothepublicinthePRCorusedinconnectionwithanyofferforthesubscriptionorsaleofthecommonstockinthePRC.ThematerialorinformationcontainedhereinrelatingtothecommonstockdoesnotconstituteanoffertosellorthesolicitationofanoffertobuyanysecuritiesinthePRC.ThecommonstockmayonlybeofferedorsoldtothePRCinvestorsthatareauthorizedtoengageinthepurchaseofsecuritiesofthetypebeingofferedorsold.PRCinvestorsareresponsibleforobtainingallrelevantgovernmentregulatoryapprovals/licenses,verificationand/orregistrationsthemselves,including,butnotlimitedto,anywhichmayberequiredfromtheCSRC,theStateAdministrationofForeignExchangeand/ortheChinaBankingRegulatoryCommission,andcomplyingwithallrelevantPRCregulations,including,butnotlimitedto,allrelevantforeignexchangeregulationsand/orforeigninvestmentregulations.

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ThesharesofferedinthisprospectushavenotbeenregisteredundertheSecuritiesandExchangeLawofJapan.Theshareshavenotbeenofferedorsoldandwillnotbeofferedorsold,directlyorindirectly,inJapanortoorfortheaccountofanyresidentofJapan,except(i)pursuanttoanexemptionfromtheregistrationrequirementsoftheSecuritiesandExchangeLawand(ii)incompliancewithanyotherapplicablerequirementsofJapaneselaw.

Singapore

ThisprospectushasnotbeenregisteredasaprospectuswiththeMonetaryAuthorityofSingapore.Accordingly,thisprospectusandanyotherdocumentormaterialinconnectionwiththeofferorsale,orinvitationforsubscriptionorpurchase,ofthesharesofourcommonstockofferedherebymaynotbecirculatedordistributed,normaythesharesbeofferedorsold,orbemadethesubjectofaninvitationforsubscriptionorpurchase,whetherdirectlyorindirectly,topersonsinSingaporeotherthan(i)toaninstitutionalinvestorunderSection274oftheSecuritiesandFutureAct,Chapter289ofSingapore,whichwerefertoastheSFA,(ii)toa"relevantperson"asdefinedinSection275(2)oftheSFA,oranypersonpursuanttoSection275(1A),andinaccordancewiththeconditions,specifiedinSection275oftheSFAor(iii)otherwisepursuantto,andinaccordancewiththeconditionsof,anyotherapplicableprovisionoftheSFA.

WherethesharesofourcommonstockofferedherebyaresubscribedandpurchasedunderSection275oftheSFAbyarelevantpersonwhichis:

(a) acorporation(whichisnotanaccreditedinvestor(asdefinedinSection4AoftheSFA))thesolebusinessofwhichistoholdinvestmentsandtheentiresharecapitalofwhichisownedbyoneormoreindividuals,eachofwhomisanaccreditedinvestor;or

(b) atrust(wherethetrusteeisnotanaccreditedinvestor(asdefinedinSection4AoftheSFA))whosesolewholepurposeistoholdinvestmentsandeachbeneficiaryisanaccreditedinvestor,shares,debenturesandunitsofsharesanddebenturesofthatcorporationorthebeneficiaries'rightsandinterest(howsoeverdescribed)inthattrustshallnotbetransferablewithinsixmonthsafterthatcorporationorthattrusthasacquiredthesharesunderSection275oftheSFAexcept

(i) toaninstitutionalinvestorunderSection274oftheSFAortoarelevantperson(asdefinedinSection275(2)oftheSFA)andinaccordancewiththeconditions,specifiedinSection275oftheSFA;

(ii) (inthecaseofacorporation)wherethetransferarisesfromanofferreferredtoinSection275(1A)oftheSFA,or(inthecaseofatrust)wherethetransferarisesfromanofferthatismadeontermsthatsuchrightsorinterestsareacquiredataconsiderationofnotlessthan$200,000(oritsequivalentinaforeigncurrency)foreachtransaction,whethersuchamountistobepaidforincashorbyexchangeofsecuritiesorotherassets;

(iii) wherenoconsiderationisorwillbegivenforthetransfer;or

(iv) wherethetransferisbyoperationoflaw.

Byacceptingthisprospectus,therecipienthereofrepresentsandwarrantsthatheisentitledtoreceiveitinaccordancewiththerestrictionssetforthaboveandagreestobeboundbylimitationscontainedherein.Anyfailuretocomplywiththeselimitationsmayconstituteaviolationoflaw.

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Australia

Noprospectusorotherdisclosuredocument(asdefinedintheCorporationsAct2001(Cth)ofAustralia,ortheCorporationsAct)inrelationtothecommonstockhasbeenorwillbelodgedwiththeAustralianSecurities&InvestmentsCommission,orASIC.ThisdocumenthasnotbeenlodgedwithASICandisonlydirectedtocertaincategoriesofexemptpersons.Accordingly,ifyoureceivethisdocumentinAustralia:

(a) youconfirmandwarrantthatyouareeither:

(i) a"sophisticatedinvestor"undersection708(8)(a)or(b)oftheCorporationsAct;

(ii) a"sophisticatedinvestor"undersection708(8)(c)or(d)oftheCorporationsActandthatyouhaveprovidedanaccountant'scertificatetouswhichcomplieswiththerequirementsofsection708(8)(c)(i)or(ii)oftheCorporationsActandrelatedregulationsbeforetheofferhasbeenmade;

(iii) apersonassociatedwiththecompanyundersection708(12)oftheCorporationsAct;or

(iv) a"professionalinvestor"withinthemeaningofsection708(11)(a)or(b)oftheCorporationsAct,andtotheextentthatyouareunabletoconfirmorwarrantthatyouareanexemptsophisticatedinvestor,associatedpersonorprofessionalinvestorundertheCorporationsActanyoffermadetoyouunderthisdocumentisvoidandincapableofacceptance;and

(b) youwarrantandagreethatyouwillnotofferanyofthecommonstockforresaleinAustraliawithin12monthsofthatcommonstockbeingissuedunlessanysuchresaleofferisexemptfromtherequirementtoissueadisclosuredocumentundersection708oftheCorporationsAct.

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LEGAL MATTERS

ThevalidityofthecommonstockofferedbythisprospectuswillbepasseduponforusbyVinson&ElkinsL.L.P.,Houston,Texas.CertainlegalmattersinconnectionwiththisofferingwillbepasseduponfortheunderwritersbyLatham&WatkinsLLP,Houston,Texas.

EXPERTS

TheconsolidatedfinancialstatementsofAnteroResourcesCorporationasofDecember31,2014and2015andforeachoftheyearsinthethreeyearperiodendedDecember31,2015,andmanagement'sassessmentoftheeffectivenessofinternalcontroloverfinancialreportingasofDecember31,2015havebeenincorporatedbyreferencehereininrelianceuponthereportsofKPMGLLP,independentregisteredpublicaccountingfirm,incorporatedbyreferenceherein,andupontheauthorityofsaidfirmasexpertsinaccountingandauditing.

Theinformationincorporatedbyreferenceintothisprospectusregardingestimatesofournaturalgasandoilreserves,relatedfuturenetcashflowsandthepresentvaluesthereofrelatedtoourAppalachianBasinpropertiesasofDecember31,2015,2014and2013wasbasedinpartuponreservereportsauditedbyindependentpetroleumengineers,DeGolyerandMacNaughton.Wehaveincorporatedbyreferencehereintheseestimatesinrelianceontheauthorityofsuchfirmasexpertsinsuchmatters.

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PART II INFORMATION NOT REQUIRED IN PROSPECTUS

ITEM 14. Other Expenses of Issuance and Distribution

Setforthbelowaretheexpenses(otherthanunderwritingdiscountsandcommissions)expectedtobeincurredinconnectionwiththeissuanceanddistributionofthesecuritiesregisteredhereby:

ITEM 15. Indemnification of Directors and Officers

Ouramendedandrestatedcertificateofincorporationprovidesthatadirectorwillnotbeliabletothecorporationoritsstockholdersformonetarydamagesforbreachoffiduciarydutyasadirector,exceptforliability(1)foranybreachofthedirector'sdutyofloyaltytothecorporationoritsstockholders,(2)foractsoromissionsnotingoodfaithorwhichinvolvedintentionalmisconductoraknowingviolationofthelaw,(3)undersection174oftheDGCLforunlawfulpaymentofdividendsorimproperredemptionofstockor(4)foranytransactionfromwhichthedirectorderivedanimproperpersonalbenefit.Inaddition,iftheDGCLisamendedtoauthorizethefurthereliminationorlimitationoftheliabilityofdirectors,thentheliabilityofadirectorofthecorporation,inadditiontothelimitationonpersonalliabilitythatwillbeprovidedbyouramendedandrestatedcertificateofincorporation,willbelimitedtothefullestextentpermittedbytheamendedDGCL.Ouramendedandrestatedbylawsprovidethatthecorporationwillindemnify,andadvanceexpensesto,anyofficerordirectortothefullestextentauthorizedbytheDGCL.

Section145oftheDGCLprovidesthatacorporationmayindemnifydirectorsandofficersaswellasotheremployeesandindividualsagainstexpenses,includingattorneys'fees,judgments,finesandamountspaidinsettlementinconnectionwithspecifiedactions,suitsandproceedingswhethercivil,criminal,administrative,orinvestigative,otherthanaderivativeactionbyorintherightofthecorporation,iftheyactedingoodfaithandinamannertheyreasonablybelievedtobeinornotopposedtothebestinterestsofthecorporationand,withrespecttoanycriminalactionorproceeding,hadnoreasonablecausetobelievetheirconductwasunlawful.Asimilarstandardisapplicableinthecaseofderivativeactions,exceptthatindemnificationextendsonlytoexpenses,includingattorneys'fees,incurredinconnectionwiththedefenseorsettlementofsuchactionandthestatuterequirescourtapprovalbeforetherecanbeanyindemnificationwherethepersonseekingindemnificationhasbeenfoundliabletothecorporation.Thestatuteprovidesthatitisnotexclusiveofotherindemnificationthatmaybegrantedbyacorporation'scertificateofincorporation,bylaws,disinteresteddirectorvote,stockholdervote,agreementorotherwise.

Ouramendedandrestatedcertificateofincorporationalsocontainsindemnificationrightsforourdirectorsandourofficers.Specifically,ouramendedandrestatedcertificateofincorporationprovidesthatweshallindemnifyourofficersanddirectorstothefullestextentauthorizedbytheDGCL.

Wehaveobtaineddirectors'andofficers'insurancetocoverourdirectors,officersandsomeofouremployeesforcertainliabilities.

SecuritiesandExchangeCommissionregistrationfee $ *Legalfeesandexpenses 200,000Accountingfeesandexpenses 100,000Printingandengravingexpenses 50,000Miscellaneous 50,000Total $ 400,000

* TheregistrantisdeferringpaymentoftheregistrationfeeinrelianceonRule456(b)andRule457(r).

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Wehaveenteredintowrittenindemnificationagreementswithourdirectorsandofficers.Undertheseagreements,ifanofficerordirectormakesaclaimofindemnificationtous,eitheramajorityoftheindependentdirectorsorindependentlegalcounselselectedbytheindependentdirectorsmustreviewtherelevantfactsandmakeadeterminationwhethertheofficerordirectorhasmetthestandardsofconductunderDelawarelawthatwouldpermit(underDelawarelaw)andrequire(undertheindemnificationagreement)ustoindemnifytheofficerordirector.

ITEM 16. Exhibits and Financial Statement Schedules

(a) Exhibits.

TheexhibitslistedontheaccompanyingExhibitIndexarefiledorincorporatedbyreferenceaspartofthisRegistrationStatement,andsuchExhibitIndexisincorporatedhereinbyreference.

ITEM 17. Undertakings

Theundersignedregistrantherebyundertakes:

1.Tofile,duringanyperiodinwhichoffersorsalesarebeingmade,apost-effectiveamendmenttothisregistrationstatement:

a.Toincludeanyprospectusrequiredbysection10(a)(3)oftheSecuritiesActof1933(the"SecuritiesAct");

b.Toreflectintheprospectusanyfactsoreventsarisingaftertheeffectivedateoftheregistrationstatement(orthemostrecentpost-effectiveamendmentthereof)which,individuallyorintheaggregate,representafundamentalchangeintheinformationsetforthintheregistrationstatement.Notwithstandingtheforegoing,anyincreaseordecreaseinvolumeofsecuritiesoffered(ifthetotaldollarvalueofsecuritiesofferedwouldnotexceedthatwhichwasregistered)andanydeviationfromtheloworhighendoftheestimatedmaximumofferingrangemaybereflectedintheformofprospectusfiledwiththeCommissionpursuanttoRule424(b)if,intheaggregate,thechangesinvolumeandpricerepresentnomorethana20%changeinthemaximumaggregateofferingpricesetforthinthe"CalculationofRegistrationFee"tableintheeffectiveregistrationstatement;and

c.Toincludeanymaterialinformationwithrespecttotheplanofdistributionnotpreviouslydisclosedintheregistrationstatementoranymaterialchangetosuchinformationintheregistrationstatement;

provided,however,thatparagraphs(a),(b)and(c)ofthissectiondonotapplyiftheinformationrequiredtobeincludedinapost-effectiveamendmentbythoseparagraphsiscontainedinreportsfiledwithorfurnishedtotheCommissionbytheregistrantpursuanttosection13or15(d)oftheExchangeActthatareincorporatedbyreferenceintheregistrationstatement,oriscontainedinaformofprospectusfiledpursuanttoRule424(b)thatispartoftheregistrationstatement.

2.That,forthepurposeofdetermininganyliabilityundertheSecuritiesAct,eachsuchpost-effectiveamendmentshallbedeemedtobeanewregistrationstatementrelatingtothesecuritiesofferedtherein,andtheofferingofsuchsecuritiesatthattimeshallbedeemedtobetheinitialbonafideofferingthereof.

3.Toremovefromregistrationbymeansofapost-effectiveamendmentanyofthesecuritiesbeingregisteredwhichremainunsoldattheterminationoftheoffering.

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4.That,forthepurposeofdeterminingliabilityundertheSecuritiesActof1933toanypurchaser:

a.EachprospectusfiledbytheregistrantpursuanttoRule424(b)(3)shallbedeemedtobepartoftheregistrationstatementasofthedatethefiledprospectuswasdeemedpartofandincludedintheregistrationstatement;and

b.EachprospectusrequiredtobefiledpursuanttoRule424(b)(2),(b)(5),or(b)(7)aspartofaregistrationstatementinrelianceonRule430BrelatingtoanofferingmadepursuanttoRule415(a)(1)(i),(vii),or(x)forthepurposeofprovidingtheinformationrequiredbysection10(a)oftheSecuritiesActshallbedeemedtobepartofandincludedintheregistrationstatementasoftheearlierofthedatesuchformofprospectusisfirstusedaftereffectivenessorthedateofthefirstcontractofsaleofsecuritiesintheofferingdescribedintheprospectus.AsprovidedinRule430B,forliabilitypurposesoftheissuerandanypersonthatisatthatdateanunderwriter,suchdateshallbedeemedtobeaneweffectivedateoftheregistrationstatementrelatingtothesecuritiesintheregistrationstatementtowhichthatprospectusrelates,andtheofferingofsuchsecuritiesatthattimeshallbedeemedtobetheinitialbonafideofferingthereof.Provided,however,thatnostatementmadeinaregistrationstatementorprospectusthatispartoftheregistrationstatementormadeinadocumentincorporatedordeemedincorporatedbyreferenceintotheregistrationstatementorprospectusthatispartoftheregistrationstatementwill,astoapurchaserwithatimeofcontractofsalepriortosucheffectivedate,supersedeormodifyanystatementthatwasmadeintheregistrationstatementorprospectusthatwaspartoftheregistrationstatementormadeinanysuchdocumentimmediatelypriortosucheffectivedate.

5.That,forthepurposeofdeterminingliabilityoftheregistrantundertheSecuritiesActtoanypurchaserintheinitialdistributionofthesecurities,theundersignedregistrantundertakesthatinaprimaryofferingofsecuritiesoftheundersignedregistrantpursuanttothisregistrationstatement,regardlessoftheunderwritingmethodusedtosellthesecuritiestothepurchaser,ifthesecuritiesareofferedorsoldtosuchpurchaserbymeansofanyofthefollowingcommunications,theundersignedregistrantwillbeasellertothepurchaserandwillbeconsideredtoofferorsellsuchsecuritiestosuchpurchaser:

a.AnypreliminaryprospectusorprospectusoftheundersignedregistrantrelatingtotheofferingrequiredtobefiledpursuanttoRule424;

b.Anyfreewritingprospectusrelatingtotheofferingpreparedbyoronbehalfoftheundersignedregistrantorusedorreferredtobytheundersignedregistrant;

c.Theportionofanyotherfreewritingprospectusrelatingtotheofferingcontainingmaterialinformationabouttheundersignedregistrantoritssecuritiesprovidedbyoronbehalfoftheundersignedregistrant;and

d.Anyothercommunicationthatisanofferintheofferingmadebytheundersignedregistranttothepurchaser.

6.That,forpurposesofdetermininganyliabilityundertheSecuritiesAct,eachfilingoftheregistrant'sannualreportpursuanttosection13(a)orsection15(d)oftheExchangeActthatisincorporatedbyreferenceintheregistrationstatementshallbedeemedtobeanewregistrationstatementrelatingtothesecuritiesofferedtherein,andtheofferingofsuchsecuritiesatthattimeshallbedeemedtobetheinitialbonafideofferingthereof.

7.InsofarasindemnificationforliabilitiesarisingundertheSecuritiesActmaybepermittedtodirectors,officersandcontrollingpersonsoftheregistrantpursuanttotheforegoingprovisions,orotherwise,theregistranthasbeenadvisedthatintheopinionoftheSecuritiesandExchange

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CommissionsuchindemnificationisagainstpublicpolicyasexpressedintheSecuritiesActandis,therefore,unenforceable.Intheeventthataclaimforindemnificationagainstsuchliabilities(otherthanthepaymentbytheregistrantofexpensesincurredorpaidbyadirector,officerorcontrollingpersonoftheregistrantinthesuccessfuldefenseofanyaction,suitorproceeding)isassertedbysuchdirector,officerorcontrollingpersoninconnectionwiththesecuritiesbeingregistered,theregistrantwill,unlessintheopinionofitscounselthematterhasbeensettledbycontrollingprecedent,submittoacourtofappropriatejurisdictionthequestionwhethersuchindemnificationbyitisagainstpublicpolicyasexpressedintheSecuritiesActandwillbegovernedbythefinaladjudicationofsuchissue.

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SIGNATURES

PursuanttotherequirementsoftheSecuritiesActof1933,asamended,theregistrantcertifiesthatithasreasonablegroundstobelievethatitmeetsalloftherequirementsforfilingonFormS-3andhasdulycausedthisRegistrationStatementtobesignedonitsbehalfbytheundersigned,thereuntodulyauthorized,intheCityofDenver,intheStateofColorado,onJune9,2016.

POWER OF ATTORNEY

KNOWALLMENBYTHESEPRESENTS,thateachpersonwhosesignatureappearsbelowherebyconstitutesandappointsGlenC.Warren,Jr.andPaulM.Rady,andeachofthem,hisorhertrueandlawfulattorneys-in-factandagents,withfullpowerofsubstitutionandresubstitution,forhimorherandinhisorhername,placeandstead,inanyandallcapacities,tosignanyandallamendmentstothisregistrationstatement(includingpreandpost-effectiveamendmentsandregistrationstatementsfiledpursuanttoRule462orotherwise)andtofilethesame,withallexhibitsthereto,andtheotherdocumentsinconnectiontherewith,withtheSecuritiesandExchangeCommission,andherebygrantstosuchattorneys-in-factandagentsandeachofthem,fullpowerandauthoritytodoandperformeachandeveryactandthingrequisiteandnecessarytobedone,asfullytoallintentsandpurposesasheorshemightorcoulddoinperson,herebyratifyingandconfirmingallthatsaidattorneys-in-factandagentsoranyofthem,orhisortheirsubstituteorsubstitutes,maylawfullydoorcausetobedonebyvirtuehereof.

PursuanttotherequirementsoftheSecuritiesActof1933,thisregistrationstatementhasbeensignedbelowbythefollowingpersonsonJune9,2016inthecapacitiesindicated.

ANTERO RESOURCES CORPORATION

By: /s/GLENC.WARREN,JR.

Name: GlenC.Warren,Jr. Title: President, Chief Financial Officer and Secretary

Name Title

/s/PAULM.RADY

PaulM.Rady

ChairmanoftheBoard,DirectorandChiefExecutiveOfficer(PrincipalExecutiveOfficer)

/s/GLENC.WARREN,JR.

GlenC.Warren,Jr.

Director,President,ChiefFinancialOfficerandSecretary(PrincipalFinancialOfficer)

/s/K.PHILYOO

K.PhilYoo

VicePresident—Accounting,ChiefAccountingOfficerandCorporateController(PrincipalAccountingOfficer)

/s/ROBERTJ.CLARK

RobertJ.Clark Director

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Name Title

/s/RICHARDW.CONNOR

RichardW.Connor Director

/s/BENJAMINA.HARDESTY

BenjaminA.Hardesty Director

/s/PETERR.KAGAN

PeterR.Kagan Director

/s/W.HOWARDKEENAN,JR.

W.HowardKeenan,Jr. Director

/s/JAMESR.LEVY

JamesR.Levy Director

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Exhibit Number Exhibit Title 1.1** UnderwritingAgreement. 3.1 AmendedandRestatedCertificateofIncorporationofAnteroResourcesCorporation(incorporatedbyreferenceto

Exhibit3.1toCurrentReportonForm8-K(CommissionFileNo.001-36120)filedonOctober17,2013). 3.2 AmendedandRestatedBylawsofAnteroResourcesCorporation(incorporatedbyreferencetoExhibit3.2toCurrent

ReportonForm8-K(CommissionFileNo.001-36120)filedonOctober17,2013). 4.1 FormofCommonStockCertificate(incorporatedbyreferencetoExhibit4.1toAmendmentNo.3toAntero

ResourcesCorporation'sRegistrationStatementonFormS-1(CommissionFileNo.333-189284)filedonSeptember24,2013).

5.1* OpinionofVinson&ElkinsL.L.P. 23.1* ConsentofKPMG,LLP. 23.2* ConsentofDeGolyerandMacNaughton,independentreserveengineers. 23.3* ConsentofVinson&ElkinsL.L.P.(containedinExhibit5.1hereto). 24.1* PowerofAttorney(includedonthesignaturepagetothisRegistrationStatement).

* Filedherewith.

** TobefiledasanexhibittoareportpursuanttoSection13(a)or15(d)oftheExchangeActorinapost-effectiveamendmenttothisregistrationstatement.

Exhibit 5.1

June 9, 2016 Antero Resources Corporation1615 Wynkoop StreetDenver, Colorado 80202 RE: Registration Statement on Form S-3 Ladies and Gentlemen:

We have acted as counsel for Antero Resources Corporation, a Delaware corporation (the “ Company”), in connection with the preparation and filing of aregistration statement on Form S-3 (the “ RegistrationStatement”) by the Company relating to the offer and sale (the “ Offering”) of up to an aggregate30,762,500 shares of common stock (the “ CommonShares”) of the Company, which includes up to 4,012,500 Common Shares that may be sold pursuant to theunderwriters’ option to purchase additional Common Shares.

We are rendering this opinion as of the time the Registration Statement becomes effective, which Registration Statement became automatically effectiveupon filing with the Commission pursuant to Rule 462(e) under the Securities Act of 1933.

In connection with this opinion, we have assumed that (i) the Common Shares will be sold in the manner described in the Registration Statement and theprospectus relating thereto and (ii) a definitive purchase, underwriting or similar agreement with respect to the sale of the Common Shares will have been dulyauthorized and validly executed and delivered by the Company and the other parties thereto. We have also assumed the genuineness of all signatures, the legalcapacity of all natural persons, the authenticity of all documents submitted to us as originals and the conformity to original documents of all documents submittedto us as copies.

In connection with the opinion expressed herein, we have examined, among other things, (i) the Amended and Restated Certificate of Incorporation of theCompany and the Amended and Restated Bylaws of the Company, (ii) the records of corporate proceedings that have occurred prior to the date hereof with respectto the Offering, (iii) the Registration Statement and (iv) such other documents as we have deemed necessary or appropriate for purposes of this opinion. We havealso reviewed such questions of law as we have deemed necessary or appropriate. As to matters of fact relevant to the opinion expressed herein, and as to factualmatters arising in connection with our examination of corporate documents, records and other documents and writings, we relied upon certificates and other

Vinson & Elkins LLP Attorneys at Law 1001 Fannin Street, Suite 2500Austin Beijing Dallas Dubai Hong Kong Houston London Moscow New York Houston, TX 77002-6760Palo Alto Richmond Riyadh San Francisco Taipei Tokyo Washington Tel +1.713.758.2222 Fax +1.713.758.2346 www.velaw.com

communications of corporate officers of the Company, without further investigation as to the facts set forth therein.

Based upon the foregoing, we are of the opinion that the Common Shares have been duly authorized and, when issued and paid for by the underwriters ascontemplated by the applicable underwriting agreement, will be validly issued, fully paid and nonassessable.

The foregoing opinion is limited in all respects to the General Corporation Law of the State of Delaware (including the applicable provisions of theDelaware Constitution and the reported judicial decisions interpreting these laws) and the federal laws of the United States of America, and we do not express anyopinions as to the laws of any other jurisdiction.

We hereby consent to the statements with respect to us under the heading “Legal Matters” in the prospectus forming a part of the Registration Statementand to the filing of this opinion as an exhibit to the Registration Statement. In giving this consent, we do not admit that we are within the category of persons whoseconsent is required under Section 7 of the Securities Act of 1933, as amended, and the rules and regulations thereunder.

Very truly yours,

/s/ Vinson & Elkins L.L.P.

Vinson & Elkins L.L.P.

Exhibit 23.1

Consent of Independent Registered Public Accounting Firm The Board of Directors Antero Resources Corporation: We consent to the use of our reports with respect to the consolidated financial statements and the effectiveness of internal control over financial reportingincorporated by reference herein and to the reference to our firm under the heading “Experts” in the prospectus.

(signed) KPMG LLP Denver, Colorado June 8, 2016

Exhibit 23.2 DEGOLYER AND MACNAUGHTON5001 SPRING VALLEY ROADSUITE 800 EASTDALLAS, TEXAS 75244 June 9, 2016 Antero Resources Corporation1615 Wynkoop StreetDenver, Colorado 80202 Ladies and Gentlemen:

We hereby consent to the use of the name DeGolyer and MacNaughton, to references to DeGolyer and MacNaughton as independent petroleum engineers,and to the inclusion or incorporation by reference of information taken from our report dated January 19, 2016 with respect to the estimated proved reserves ofAntero Resources Corporation as of December 31, 2015, in the form and context in which they appear in or are incorporated into this Registration Statement onForm S-3 (the “Registration Statement”) and the related prospectus that is a part thereof. We further consent to the reference to this firm under the heading“EXPERTS” in the Registration Statement and related prospectus.

Very truly yours,

/s/ DEGOLYER AND MACNAUGHTON

DeGOLYER and MacNAUGHTONTexas Registered Engineering Firm F-716

united statesd1lge852tjjqow.cloudfront.net/cik-0001433270/52353818-7... · 2016. 6. 9. · 2016 was...

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