Usetheselinkstorapidlyreviewthedocument

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ATLASSIANCORPORATIONPLCINDEXTOCONSOLIDATEDFINANCIALSTATEMENTS

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AsfiledwiththeSecuritiesandExchangeCommissiononNovember9,2015.

RegistrationNo.333-

UNITEDSTATES

SECURITIESANDEXCHANGECOMMISSION

WASHINGTON,D.C.20549

FORMF-1

REGISTRATIONSTATEMENT

UNDER

THESECURITIESACTOF1933

AtlassianCorporationPlc

(ExactNameofRegistrantasSpecifiedinItsCharter)

UnitedKingdom

(StateorOtherJurisdictionof

IncorporationorOrganization)

7372

(PrimaryStandardIndustrial

ClassificationCodeNumber)

98-1258743

(I.R.S.Employer

IdentificationNumber)

ExchangeHouse

PrimroseStreet

LondonEC2A2EG

c/oHerbertSmithFreehillsLLP

415.701.1110

(Address,IncludingZipCode,andTelephoneNumber,Including

AreaCode,ofRegistrant'sPrincipalExecutiveOffices)

TomKennedy

ChiefLegalOfficer

Atlassian,Inc.

1098HarrisonStreet

SanFrancisco,California94103

415.701.1110

(Name,address,includingzipcode,andtelephonenumber,including

areacode,ofagentforservice)

Copiesto:

AnthonyJ.McCusker

RichardA.Kline

An-YenE.Hu

GoodwinProcterLLP

135CommonwealthDrive

MenloPark,California94025

650.752.3100

TomKennedy

ChiefLegalOfficer

AtlassianCorporationPlc

1098HarrisonStreet

SanFrancisco,California94103415.701.1110

DavidPeinsipp

AndrewS.Williamson

EricC.Jensen

CooleyLLP

101CaliforniaStreet,5 Floor

SanFrancisco,California94111

415.693.2000

Approximatedateofcommencementofproposedsaletothepublic:

Assoonaspracticableafterthisregistrationstatementbecomeseffective.

IfanyofthesecuritiesbeingregisteredonthisFormaretobeofferedonadelayedorcontinuousbasispursuanttoRule415undertheSecuritiesActof1933,checkthefollowingbox.

o

IfthisFormisfiledtoregisteradditionalsecuritiesforanofferingpursuanttoRule462(b)undertheSecuritiesAct,checkthefollowingboxandlisttheSecuritiesActregistrationstatementnumberoftheearliereffectiveregistrationstatementforthesameoffering.

o

IfthisFormisapost-effectiveamendmentfiledpursuanttoRule462(c)undertheSecuritiesAct,checkthefollowingboxandlisttheSecuritiesActregistrationstatementnumberoftheearliereffectiveregistrationstatementforthesameoffering.

o

IfthisFormisapost-effectiveamendmentfiledpursuanttoRule462(d)undertheSecuritiesAct,checkthefollowingboxandlisttheSecuritiesActregistrationstatementnumberoftheearliereffectiveregistrationstatementforthesameoffering.

o

CALCULATIONOFREGISTRATIONFEE

th

TitleofEachClassofSecurities

TobeRegistered

ProposedMaximum

AggregateOffering

Price(1)(2)

Amountof

RegistrationFee

ClassAordinaryshares,nominalvalue$0.10pershare $250,000,000 $25,175

(1) EstimatedsolelyforthepurposeofcomputingtheamountoftheregistrationfeepursuanttoRule457(o)undertheSecuritiesActof1933,asamended.

(2) Includestheaggregateofferingpriceofadditionalsharesthattheunderwritershavetheoptiontopurchase,ifany.

TheRegistrantherebyamendsthisRegistrationStatementonsuchdateordatesasmaybenecessarytodelayitseffectivedateuntiltheRegistrantshallfileafurtheramendmentwhichspecificallystatesthatthisRegistrationStatementshallthereafterbecomeeffectiveinaccordancewithSection8(a)oftheSecuritiesActof1933oruntiltheRegistrationStatementshallbecomeeffectiveonsuchdateastheSecuritiesandExchangeCommission,actingpursuanttosaidSection8(a),maydetermine.

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Theinformationinthispreliminaryprospectusisnotcompleteandmaybechanged.ThesesecuritiesmaynotbesolduntiltheregistrationstatementfiledwiththeSecuritiesandExchangeCommissioniseffective.Thispreliminaryprospectusisnotanoffertosellnordoesitseekanoffertobuythesesecuritiesinanyjurisdictionwheretheofferorsaleisnotpermitted.

SubjecttoCompletion:Dated

,2015

Shares

AtlassianCorporationPlcClassAOrdinaryShares

ThisisaninitialpublicofferingofClassAordinarysharesofAtlassianCorporationPlc.

Followingthisoffering,wewillhavetwoclassesofordinaryshares,ClassAordinarysharesandClassBordinaryshares.TherightsoftheholdersofClassAordinarysharesandClassBordinarysharesareidentical,exceptwithrespecttovoting,conversionandtransferrights.EachClassAordinaryshareisentitledtoonevote.EachClassBordinaryshareisentitledtotenvotesandisconvertibleintooneClassAordinaryshare.TheholdersofouroutstandingClassBordinaryshareswillholdapproximately

%ofthevotingpowerofouroutstandingsharecapitalfollowingthisoffering.

Priortothisoffering,therehasbeennopublicmarketforourClassAordinaryshares.Itiscurrentlyestimatedthattheinitialpublicofferingpricewillbebetween$

and$

pershare.WehaveappliedtolistourClassAordinarysharesontheNASDAQGlobalMarketunderthesymbol"TEAM".

Wearean"emerginggrowthcompany"asthattermisusedintheJumpstartOurBusinessStartupsActof2012,and,assuch,haveelectedtocomplywithreducedpubliccompanyreportingrequirements.

See "Risk Factors" on page 15 to read about factors you should consider before buying our Class A ordinary shares.

NeithertheSecuritiesandExchangeCommissionnoranystatesecuritiescommissionhasapprovedordisapprovedofthesesecuritiesordeterminedifthisprospectusistruthfulorcomplete.Anyrepresentationtothecontraryisacriminaloffense.

Totheextentthattheunderwriterssellmorethan

ClassAordinaryshares,theunderwritershavetheoptiontopurchaseuptoanadditional

ClassAordinarysharesfromusattheinitialpublicofferingpricelesstheunderwritingdiscount.Theymayexercisethisoptionfor30days.

TheunderwritersexpecttodeliverthesharesagainstpaymentinNewYork,NewYorkon

,2015.

Prospectusdated

,2015

PerShare Total

Initialpublicofferingprice $

$

Underwritingdiscount(1) $

$

Proceeds,beforeexpenses,tous $

$

See"Underwriting"foradditionalinformationregardingunderwritingcompensation.(1)

Goldman,Sachs&Co. MorganStanley

Allen&CompanyLLC UBSInvestmentBank

Jefferies

CanaccordGenuity JMPSecurities

RaymondJames

WilliamBlair

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Neitherwenoranyoftheunderwritershaveauthorizedanyonetoprovideyouwithanyinformationortomakeanyrepresentationsotherthanascontainedinthisprospectusorinanyfreewritingprospectuseswehaveprepared.Neitherwenortheunderwriterstakeresponsibilityfor,andprovidenoassuranceastothereliabilityof,anyinformationthatothersmaygiveyou.Thisprospectusisanoffertosellonlythesharesofferedhereby,butonlyundercircumstancesandinjurisdictionswhereitislawfultodoso.Theinformationcontainedinthisprospectusisaccurateonlyasofthedateofthisprospectus,regardlessofthetimeofdeliveryofthisprospectusoranysaleoftheClassAordinaryshares.Ourbusiness,financialcondition,resultsofoperationsandprospectsmayhavechangedsincethatdate.

Unlessotherwiseindicated,allreferencesinthisprospectusto"Atlassian"orthe"company","we","our","us"orsimilartermsrefertoAtlassianCorporationPlcanditssubsidiaries.

OurconsolidatedfinancialstatementsarepresentedinU.S.dollars.Allreferencesinthisprospectusto"$","U.S.$","U.S.dollars"and"dollars"meanU.S.dollars,unlessotherwisenoted.

NoactionisbeingtakeninanyjurisdictionoutsidetheUnitedStatestopermitapublicofferingofourClassAordinarysharesorpossessionordistributionofthisprospectusinanysuchjurisdiction.PersonswhocomeintopossessionofthisprospectusinjurisdictionsoutsidetheUnitedStatesarerequiredtoinformthemselvesaboutandtoobserveanyrestrictionsastothisofferingandthedistributionofthisprospectusapplicabletothosejurisdictions.

ProspectusSummary 1RiskFactors 15SpecialNoteRegardingForward-LookingStatements 44MarketandIndustryData 45UseofProceeds 46DividendPolicy 47Capitalization 48Dilution 50CorporateStructure 52SelectedConsolidatedFinancialandOtherData 54Management'sDiscussionandAnalysisofFinancialConditionandResultsofOperations 58LetterfromtheFounders 96Business 98Management 126RelatedPartyTransactions 142PrincipalShareholders 144DescriptionofShareCapital 147SharesEligibleforFutureSale 170Taxation 172Underwriting 181ExpensesoftheOffering 188ServiceofProcessandEnforcementofJudgments 188LegalMatters 188Experts 189WhereYouCanFindAdditionalInformation 189IndextoConsolidatedFinancialStatements F-1

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PROSPECTUSSUMMARY

This summary highlights information contained elsewhere in this prospectus. This summary does not contain all of the information you shouldconsider before investing in our Class A ordinary shares. You should read this entire prospectus carefully, including "Risk Factors" and "Management'sDiscussion and Analysis of Financial Condition and Results of Operations", and our consolidated financial statements and the related notes includedelsewhere in this prospectus, before making an investment decision.

Overview

Ourmissionistounleashthepotentialineveryteam.

Ourproductshelpteamsorganize,discussandcompletetheirwork—deliveringsuperioroutcomesfortheirorganizations.

Webelievehumanadvancementhasalwaysbeendrivenbyteamwork—fromthegreatexplorationsofearthandspacetoinnovationsinindustry,medicine,musicandtechnology.Andwhileit'scommontocelebratetheindividualgeniusbehindabreakthroughidea,innearlyeverycasethereisateamofunsungheroesthatactuallygettheworkdone.

Wealsobelievethatthegreatestleverteamshavetoadvancehumanityliesinthepowerofsoftwareinnovation.Throughsoftware,contactlensesnowmonitorandreportonthebloodglucoselevelsofdiabetespatients,allowingpatientanddoctortobettermanagethedisease.Throughsoftware,carscanmonitorandreportonvehiclestatus,improvingdriversafety.Throughsoftware,peoplecanread,writeandconversewithpeopleinlanguagestheydonotspeak.Eachoftheseadvanceswasdeliveredbyteams.

Software'stransformationalimpactisforcingorganizationstousesoftwaretoinnovate,orfacedisruptionfromcompetitorsthatdo.Today,organizationsineveryindustryarebecomingsoftware-driven.Asaresult,theteamsthatimagine,createanddeliverthatsoftwarearemoreessentialthanever.

Ourcompanywasfoundedin2002tohelpsoftwareteamsworkbettertogether.Fromthebeginning,ourproductsweredesignedtohelpdeveloperscollaboratewithothernon-developerteamsinvolvedinsoftwareinnovation.Thisbreakthroughapproachseparatedusfromtraditionalsoftwareprovidersfocusedsolelyondevelopers.

Asmorenon-developerteamsareexposedtoourproducts,theyadoptandextendthemtonewusecases,bringingourproductstootherusersandothertypesofteamsintheirorganizations.Thishascreatedanexpansivemarketopportunityforus.

Today,ourproductsserveteamsofallshapesandsizes,invirtuallyeveryindustry—fromsoftwareandtechnicalteamstoITandserviceteams,fromsalesandmarketingteamstoHR,financeandlegalteams.OurproductsincludeJIRAforteamplanningandprojectmanagement,Confluenceforteamcontentcreationandsharing,HipChatforteammessagingandcommunications,BitbucketforteamcodesharingandmanagementandJIRAServiceDeskforteamservicesandsupportapplications.

Ourproductsformanintegratedsystemfororganizing,discussingandcompletingsharedwork,becomingdeeplyentrenchedinhowpeopleworktogetherandhoworganizationsrun.OurproductshavebeenusedbyNASAtodesigntheMarsRover,byCochleartodevelopauralimplants,andbyRunkeepertocreateGPSfitnesstrackingapplications.

Wefoundedourcompanyonthepremisethatgreatproductscouldsellthemselvesandwehavedevelopedauniqueapproachtothemarketthatiscenteredonthisbelief.Webeginwitha

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deepinvestmentinproductdevelopmenttocreateandrefinehigh-qualityandversatileproductsthatuserslove.Wemakeourproductsaffordablefororganizationsofallsizesandwetransparentlyshareoursimplepricingonline.Wepursuecustomeranduservolume,targetingteamsineveryorganization,regardlessofsize,industryorgeography.

Toreachthisexpansivemarket,wedistributeandsellourproductsonlinewithouttraditionalsalesinfrastructurewhereuserscangetstartedinminuteswithouttheneedforassistance.Wefocusonenablingaself-service,low-frictionmodelthatmakesiteasyforuserstotry,adoptanduseourproducts.

Ourcultureofinnovation,transparencyanddedicationtocustomerservicedrivesoursuccessinimplementingandrefiningthisuniqueapproach.Webelievethisapproachfostersinnovation,quality,customerhappiness,scaleandprofitability.

Werecognizethatusersdrivetheadoptionandproliferationofourproductsand,asaresult,wearerelentlesslyfocusedonmeasuringandimprovingusersatisfaction.Weknowthatonehappyuserwillbegetanother,therebyexpandingthelargeandorganicword-of-mouthcommunitythathelpsdriveourgrowth.Weoperateatunusualscaleforanenterprisesoftwarecompany,withmorethan5millionmonthlyactiveusersofourproductsandmorethan51,000customers(organizationsthathaveatleastoneactiveandpaidlicenseorsubscriptionforwhichtheypaidmorethan$10permonth)acrossvirtuallyeveryindustrysectorinmorethan160countries.Ourcustomersrangefromsmallorganizationsthathaveadoptedoneofourproductsforasmallgroupofusers,to79oftheFortune100and273oftheFortune500,manyofwhichuseamultitudeofourproductsacrossthousandsofusers.

Ourmodelhasallowedustogrowwhilemaintainingprofitabilityforeachofthelast10fiscalyears.Ourtotalrevenueswere$148.5million,$215.1millionand$319.5millionforthefiscalyearsendedJune30,2013,2014and2015,respectively,representingacompoundannualgrowthrateof46.7%fromfiscal2013tofiscal2015.Ourtotalrevenueswere$67.9millionand$101.8millionforthethreemonthsendedSeptember30,2014and2015,respectively,representinganannualgrowthrateof49.9%.Wegeneratednetincomeof$10.8million,$19.0millionand$6.8millionforthefiscalyearsendedJune30,2013,2014and2015,respectively,and$3.6millionand$5.1millionforthethreemonthsendedSeptember30,2014and2015,respectively.Wealsogeneratedfreecashflowof$47.1million,$65.0millionand$65.5millionforthefiscalyearsendedJune30,2013,2014and2015,respectively,and$3.6millionand$8.2millionforthethreemonthsendedSeptember30,2014and2015,respectively.

MarketTrends

• SoftwareisChangingEverything—Softwareisimpactingalmosteveryaspectofourlivesandredefiningthelimitsofwhatpeopleandorganizationscanachieve.Softwareiseverywhereandincreasinglyineverything,andorganizationsofalltypesandsizesfaceanexistentialimperativetodrivesoftwareinnovation.

• SoftwareTeamsareEssentialandMulti-Dimensional—Teamsthatcandeliversoftwareinnovationrequireamyriadoftalentsandfunctionalexpertiseandarecriticaltoeachorganization'seffortstothriveandcompete.Softwaredevelopershavebecomemoreessentialandinfluentialandthedemandforsoftwaredevelopmenttalenthasgrown.

• SoftwareTeamCollaborationisComplexandChallenging—Modernsoftwaredevelopmentishighlycreative,iterativeandasynchronous,andverycomplex.Softwareteamstodaymustiterateandmovefasterthaneverbefore,andarebecomingthemodelformodernworkforcecollaborationacrossallteams.

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• IncreasingComplexityMakesCollaborationCriticalforAllTeams—Acrosstheglobaleconomy,workisbecomingmorecomplex,faster-pacedandmorecollaborative.Inaddition,moreandmoreteamsarenowspreadacrossgeographies.

• AllTeamsareSeekingBetterWaystoConnectandGetWorkDone—Assoftwareprojectsbecomemorecross-functional,knowledgeworkersthroughoutorganizationshavebeenexposedtothecollaborationandworkflowpracticesofsoftwareteams.Thisexposureacrossorganizationshascoincidedwithgrowingdissatisfactionwithtraditionalproductivitytools.

• TeamsAreNowMakingTheirOwnTechnologyChoices—Followingthe"bringyourowndevice"trend,employeesareincreasinglyempoweredto"bringyourownsoftware",leadingtotheuser-drivenviraladoptionofnewtypesofconsumer-stylesoftwareproductswithinanorganization.

LimitationsofTraditionalApproaches

TraditionalTools

Mosttraditionalsoftwaredevelopmenttechnologiesarecostly,complex,poorlydesigned,hardtouseandnoteasilyintegratedwithothersoftwaresystems.Moreover,thesetechnologiesweredesignedsolelyfortheneedsofsoftwaredevelopersanddonotextendwelltootherusecases.Otherpointsolutionsdonotprovidethebreadth,integrationandsecuritythatorganizationsrequire.

Inanefforttoservetheneedsofteamsandintegratesoftwaredevelopersandotherknowledgeworkers,organizationshaveoftenreliedontraditionalpersonalproductivitytools.Whilethesetoolsarewidelyused,theyweredesignedmanyyearsago,providenarrowfunctionality,arenotintegrated,andarenotsuitedforthedemandsofmanagingcomplexprojectsamongdiverseandbroadlydistributedteams.

TraditionalDistributionModels

Traditionalenterprisesoftwaredistributionmodels,withtheirfocusonquota-drivensalesrepresentativesandrelianceonlargedeals,arenotwellsuitedtoreach,influenceormeettheneedsofteams,whoareincreasinglydrivingtechnologypurchasingdecisions.

Historically,enterprisesoftwarewaspurchasedinacentralized,topdownfashion.Asaresult,purchasedecisionswereoftendisconnectedfromactualuserneedsandresultedinlowadoptionrates.

Theconsumerizationofenterprisetechnologyhasgivenamuchbroaderpopulationofworkersastakeandavoiceintheprocurementofsoftwaresolutions.Teamsofallkindshaveincreasingfreedomtochoosethetechnologytheywant.

MarketOpportunity

Ourproductsaddressseverallargeandwell-establishedcategoriesofITspending.Investmentinthesetraditionalcategoriesisexpectedtototalmorethan$35.0billionin2015.AccordingtoGartner,Inc.,amarketresearchfirm,theApplicationDevelopmentmarketisexpectedtobe$8.8billionandtheITOperationsmarketisexpectedtobe$9.1billionin2015fortheITAssetandFinancialManagement,ITServiceSupportManagementToolsandAutomationToolsmarkets.InternationalDataCorporation("IDC"),amarketresearchfirm,expectsthemarketforCollaborativeApplicationstobe$13.5billionandtheProjectandPortfolioManagementmarkettobe$3.8billionin2015.

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Webelievethatthelimitationsoftraditionaltoolsanddistributionmodels,coupledwiththegrowingdemandformoderncollaborationtechnology,presentanopportunitytoexpandwithinthesetraditionalcategories.Byprovidingaffordable,versatile,adaptableandmodernsoftwarebuiltfortheneedsofteams,webelievethatwecancontinuetodisruptandincreaseourshareoftheselarge,existingmarkets.

TheAtlassianWay

Ourproductstrategy,distributionmodelandcompanycultureworkinconcerttocreateuniquevalueforourcustomersandcompetitiveadvantageforourcompany.

Weinvestsignificantlyindevelopingandrefiningproductsthatallowteamstoachievetheirfullpotential.Wemakeversatileproductsthatcanbeusedinamyriadofways.Ourproductsareeasytoadoptanduseandcanbedistributedandproliferatedorganicallyandefficiently.

Weoffertheseproductsataffordablepricepointsinahigh-velocityonlinedistributionmodel.Ourdistributionmodeldoesnotrelyoncostlysalesinfrastructuretopushproducttoourcustomers.Bymakingourproductssimple,powerfulandeasytoadopt,wegeneratedemandfromword-of-mouthandviralexpansionwithinorganizations.Ourmodelisdesignedtooperateatscaleandservemillionsofcustomers.

Webelievethatourproductstrategy,distributionmodelandcompanyculturearemutuallyreinforcing.Byinvestingininnovationandmakingourproductsaffordableandeasytouse,weoperatewithoutrelianceontraditionalsalesinfrastructure,whichenhancesourdistributionmodelandpermitslong-terminvestmentinproductleadershipandouruniqueculture.

OurProductStrategy

Wehavedevelopedandacquiredabroadportfolioofproductsthathelpteamslargeandsmalltoorganize,discussandcompletetheirworkinacoordinated,efficientandmodernfashion.

Ourproducts,whichincludeJIRA,Confluence,HipChat,BitbucketandJIRAServiceDesk,servetheneedsofteamsofsoftwaredevelopers,ITmanagersandknowledgeworkers.Whiletheseproductsprovidearangeofdistinctfunctionalitytousers,theysharecertaincoreattributes:

• BuiltforTeams—Ourproductsaresingularlydesignedtohelpteamsworkbettertogetherandachievemore.

• EasytoAdoptandUse—Weinvestsignificantlyinresearchanddevelopmenttoenableourproductstobebothpowerfulandextremelyeasytouse.

• VersatileandAdaptable—Wedevelopsimpleandwell-designedproductsthatareusefulinabroadrangeofworkflowsandprojects.

• Integrated—Ourproductsareintegratedanddesignedtoworkwelltogether.

• Open—Wearededicatedtomakingourproductsopenandinteroperablewitharangeofotherplatformsandapplications.

OurDistributionModel

Ourhigh-velocitydistributionmodelisdesignedtodriveexceptionalcustomerscalebymakingaffordableproductsavailableviaourconvenient,low-frictiononlinechannel.Wefocusonproductquality,automateddistributionandcustomerserviceinlieuofacostlytraditionalsalesinfrastructure.Werelyonword-of-mouthandlow-touchdemandgenerationtodrivetrial,adoptionandexpansionofourproductswithincustomers.

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Thefollowingarekeyattributesofouruniquemodel:

• Innovation-driven—Relativetootherenterprisesoftwarecompanies,weinvestsignificantlyinresearchanddevelopmentratherthansalesandmarketing.

• SimpleandAffordable—Weofferourproductsataffordablepricesinasimpleandtransparentformat,withafreetrialbeforepurchase.

• OrganicandExpansive—Ourmodelbenefitsfromsignificantcustomerword-of-mouthaboutourproductsthatdrivestraffictoourwebsite.

• Scale-oriented—Ourmodelisdesignedtogenerateandbenefitfromsignificantcustomerscaleandourgoalistomaximizethenumberofindividualusersofoursoftware.

• Data-driven—Ourscaleandthedesignofourmodelallowsustogatherinsightsintoandimprovethecustomerexperience.

OurCulture

Ourcompanycultureisexemplifiedbyourcorevalues:

• OpenCompany,NoBullsh*t

• BuildwithHeartandBalance

• Don't#@!%theCustomer

• Play,asaTeam

• BetheChangeYouSeek

Thesevaluescontributetoaculturethatisopen,innovative,dedicatedtoourcustomers,team-drivenandlong-termfocused,allofwhichenableustodrivecustomervalueandachievecompetitivedifferentiation.

OurFinancialModel

Bydevelopingaproductstrategy,distributionmodelandculturethataredesignedaroundtheneedsofourcustomersandusers,webelievethatwehaveestablishedafinancialmodelthatisfavorableforourshareholders.Ourmodelhasallowedustogrowcustomersandrevenuesteadilywhilemaintainingprofitabilityforeachofthelast10fiscalyears.Ourmodelreliesonrapidlyandefficientlylandingnewcustomersandexpandingourrelationshipwiththemovertime.Thefollowingarethekeyelementsofourmodel:

• SignificantInvestmentinOngoingProductDevelopmentandSalesAutomation—Ourresearchanddevelopmentinvestmentsenableustorapidlybuildnewproducts,continuouslyenhanceourexistingproducts,acquireandintegratetechnologiesandalsohelpusobtaindata-driveninsightsandfurtherautomateandstreamlineourapproachtocustomeracquisition.

• RapidandEfficientAcquisitionofNewCustomers—Bybuildingproductsthatareaffordableandeasytoadoptanduse,weareabletoattractcustomersrapidlywithoutemployingatraditionalsalesforce,andtherebylowerthecostofcustomeracquisitionsignificantly.AtSeptember30,2015,wehadover5millionmonthlyactiveusersofoursoftwareacrossmorethan450,000organizationsandmorethan51,000customers.

• ContinuedExpansion—Oursuccessisdependentonourabilitytoexpandtherelationshipwithourexistingbaseofcustomers.Sinceourfounding,theaggregatesalesfrom

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customersacquiredinanyfiscalyearhaveexpandedsincetheyfirstpurchasedanAtlassianproduct,throughtheadditionofmoreusers,teamsandproducts.

• PredictabilityofSales—Aswearenotdependentonatraditionalsalesmodelandrelyonahigh-velocityonlinedistributionmodel,wehavehistoricallyexperiencedalinearquarterlysalescycle.Onceteamsbeginworkingtogetherwithoursoftware,webecomeembeddedintheirworkflows,becomingasystemforengagementwithinorganizations.Thismakesitdifficulttodisplaceusandprovidesuswithsteadyandpredictablerevenue.

• PositiveFreeCashFlow—Byreducingcustomeracquisitioncostandestablishingarevenuemodelthathasscaledlinearly,ourmodelhasallowedustohavepositivefreecashflowforeachofthelast10fiscalyears.

OurGrowthStrategy

Ourgrowthstrategyistomakeoursoftwareaccessibletoeveryorganization,teamandusertohelpthemgetworkdone.Weintendtocontinuethisapproachbyaddingcustomers,developingnewproducts,expandinginexistingcustomersandpursuingselectiveacquisitions.

Keydriversofourgrowthstrategyinclude:

• ProtectandPromoteOurCulture—Ourcultureisatthefoundationofeverythingwedoandfuelsourbusinessstrategyandsuccess.

• ContinuetoRefineOurUniqueBusinessModel—WewillcontinuetodevelopthetechnologyandproductsthatenableourcustomerstoeasilyadoptanduseourproductsovertheInternet.

• IncreaseProductValue—Weintendtocontinuetoincreasethevalueofoursoftwaretocustomersbyprovidingthemwithabroader,integratedsetofproducts.

• GrowtheAtlassianMarketplaceandPartnerEcosystem—TheAtlassianMarketplaceisanopenplatformthatallowsindependentvendorsanddeveloperstocontinuetodevelopadd-onsandextensionsthatextendourplatformandgeneratemillionsofdollarsinrevenueforboththethird-partyvendorsandforus.

RiskFactorsSummary

Ourbusinessissubjecttonumerousrisksanduncertainties,includingthosehighlightedin"RiskFactors"immediatelyfollowingthisprospectussummary.Theserisksinclude,butarenotlimitedto,thefollowing:

• Ourrapidgrowthmakesitdifficulttoevaluateourfutureprospectsandmayincreasetheriskthatwewillnotcontinuetogrowatornearhistoricalrates.

• Wemaynotbeabletosustainourrevenuegrowthrateormaintainprofitabilityinthefuture.

• Themarketsinwhichweparticipateareintenselycompetitive,andifwedonotcompeteeffectively,ourbusiness,resultsofoperationsandfinancialconditioncouldbeharmed.

• Ourdistributionmodelofofferinganddeployingourproductsviaboththecloudandonpremisesincreasesourexpenses,mayimpactrevenuerecognitiontimingandmayposeotherchallengestoourbusiness.

• Ourbusinessdependsonourcustomersrenewingtheirsubscriptionsandmaintenanceplansandpurchasingadditionallicensesorsubscriptionsfromus.Anydeclineinourcustomerretentionorexpansionwouldharmourfutureresultsofoperations.

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• Ifwearenotabletodevelopnewproductsandenhancementstoourproductsthatachievemarketacceptanceandthatkeeppacewithtechnologicaldevelopments,ourbusinessandresultsofoperationswouldbeharmed.

• Ifwecannotcontinuetoexpandtheuseofourproductsbeyondourinitialfocusonsoftwaredevelopers,ourabilitytogrowourbusinessmaybeharmed.

• Weinvestsignificantlyinresearchanddevelopment,andtotheextentourresearchanddevelopmentinvestmentsdonottranslateintonewproductsormaterialenhancementstoourcurrentproducts,orifwedonotusethoseinvestmentsefficiently,ourbusinessandresultsofoperationswouldbeharmed.

• Ifwefailtoeffectivelymanageourgrowth,ourbusinessandresultsofoperationscouldbeharmed.

• Ifourcurrentmarketingmodelisnoteffectiveinattractingnewcustomers,wemayneedtoincuradditionalexpensestoattractnewcustomersandourbusinessandresultsofoperationscouldbeharmed.

• Ifoursecuritymeasuresarebreachedorunauthorizedaccesstocustomerdataisotherwiseobtained,ourproductsmaybeperceivedasinsecure,wemayloseexistingcustomersorfailtoattractnewcustomers,andwemayincursignificantliabilities.

• Thedualclassstructureofourordinaryshareshastheeffectofconcentratingvotingcontrolwithcertainshareholders,inparticular,ourco-chiefexecutiveofficersandtheiraffiliates,whichwilllimityourabilitytoinfluencetheoutcomeofimportanttransactions,includingachangeincontrol.

CorporateInformation

ThelegalandcommercialnameofourcompanyisAtlassianCorporationPlc.WewereregisteredinAustraliain2002andreorganizedintotheUnitedKingdomin2014.See"CorporateStructure"foradditionalinformation.

OurregisteredofficeislocatedatExchangeHouse,PrimroseStreet,LondonEC2A2EG,c/oHerbertSmithFreehillsLLP.OurAustralianheadquartersislocatedatLevel6,341GeorgeSt.,Sydney,NSW,2000Australia,andourtelephonenumberis+61292621443.OurU.S.headquartersislocatedat1098HarrisonStreet,SanFrancisco,California94103andourtelephonenumberis(415)701-1110.Ourwebsiteaddressiswww.atlassian.com.Informationcontainedon,orthatcanbeaccessedthrough,ourwebsiteisnotincorporatedbyreferenceintothisprospectus,andyoushouldnotconsiderinformationonourwebsitetobepartofthisprospectus.TheAtlassiandesignlogo,"Atlassian"andourotherregisteredandcommonlawtradenames,trademarksandservicemarksarethepropertyofAtlassianCorporationPlcoroursubsidiaries.

EmergingGrowthCompany

TheJumpstartOurBusinessStartupsAct("JOBSAct")wasenactedinApril2012withtheintentionofencouragingcapitalformationintheUnitedStatesandreducingtheregulatoryburdenonnewlypubliccompaniesthatqualifyas"emerginggrowthcompanies".WeareanemerginggrowthcompanywithinthemeaningoftheJOBSAct.Asanemerginggrowthcompany,wemaytakeadvantageofcertainexemptionsfromvariouspublicreportingrequirements,includingtherequirementthatourinternalcontroloverfinancialreportingbeauditedbyourindependentregisteredpublicaccountingfirmpursuanttoSection404oftheSarbanes-OxleyActof2002("Sarbanes-OxleyAct")andcertainrequirementsrelatedtothedisclosureofexecutive

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compensationinthisprospectusandinourperiodicreports.Wemaytakeadvantageoftheseexemptionsuntilwearenolongeranemerginggrowthcompany.

Wewillremainanemerginggrowthcompanyuntiltheearliesttooccurof(i)thelastdayofthefiscalyearinwhichwehavemorethan$1.0billioninannualsales;(ii)thedatewequalifyasa"largeacceleratedfiler",withatleast$700millionofequitysecuritiesheldbynon-affiliates;(iii)thedateonwhichwehaveissued,inanythree-yearperiod,morethan$1.0billioninnon-convertibledebtsecurities;and(iv)thelastdayofthefiscalyearendingafterthefifthanniversaryofthecompletionofthisoffering.

See"RiskFactors—RisksRelatedtoOurBusinessandIndustry—Wearean"emerginggrowthcompany"andwecannotbecertainifthereduceddisclosurerequirementsapplicabletoemerginggrowthcompanieswillmakeourClassAordinaryshareslessattractivetoinvestors"forcertainrisksrelatedtoourstatusasanemerginggrowthcompany.

ForeignPrivateIssuer

WeareincorporatedintheUnitedKingdom,andamajorityofouroutstandingsecuritiesareownedbynon-U.S.residents.AftertheconsummationofthisofferingandundertherulesoftheU.S.SecuritiesandExchangeCommission("SEC")andtheNASDAQStockMarketLLC("NASDAQ"),wewillbea"foreignprivateissuer".Asaforeignprivateissuer,wewillbesubjecttolessstringentcorporategovernanceguidelinesanddifferentdisclosurerequirementsthanU.S.domiciledregistrants.Forexample,wewillnotberequiredtofileperiodicreportsandfinancialstatementswiththeSECasfrequentlyoraspromptlyasdomesticregistrantswhosesecuritiesareregisteredundertheSecuritiesExchangeActof1934,asamended("ExchangeAct").Nevertheless,followingthisoffering,weintendtosubmitquarterlyinterimconsolidatedfinancialdatatotheSECundercoveroftheSEC'sForm6-K.Youwillbeabletoreadandobtaincopiesofthesereportsattheaddressessetforthin"WhereYouCanFindAdditionalInformation".Foradditionalinformation,see"RiskFactors—RisksRelatedtoInvestinginaForeignPrivateIssueroranEnglishCompany".

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TheOffering

9

ClassAordinarysharesofferedbyus

shares

ClassAordinarysharestobeoutstandingafterthisoffering

shares

ClassBordinarysharestobeoutstandingafterthisoffering

155,803,022shares

TotalClassAordinarysharesandClassBordinarysharestobeoutstandingafterthisoffering

shares

Underwriters'optiontopurchaseadditionalClassAordinaryshares

shares

Useofproceeds

WeestimatethatournetproceedsfromthesaleofourClassAordinarysharesthatweareofferingwillbe$

million,assuminganinitialpublicofferingpriceof$

pershare,themidpointoftheestimatedpricerangesetforthonthecoverpageofthisprospectus,andafterdeductingestimatedunderwritingdiscountsandcommissionsandestimatedofferingexpensespayablebyus.

TheprincipalpurposesofthisofferingaretoincreaseourcapitalizationandfinancialflexibilityandcreateapublicmarketforourClassAordinaryshares.Weintendtousethenetproceedswereceivefromthisofferingforgeneralcorporatepurposes,includingworkingcapital,operatingexpensesandcapitalexpenditures.Wealsomayuseaportionofthenetproceedstoacquirecomplementarybusinesses,products,servicesortechnologies.However,wedonothaveagreementsorcommitmentsforanyspecificacquisitionsatthistime.Wealsomayusecertainofthenetproceedstosatisfytaxwithholdingobligationsrelatedtothevestingofrestrictedshareunits("RSUs")heldbycurrentandformeremployees.See"UseofProceeds"foradditionalinformation.

Votingrights

Followingthisoffering,wewillhavetwoclassesofordinaryshares,ClassAordinarysharesandClassBordinaryshares.ClassAordinarysharesareentitledtoonevotepershareandClassBordinarysharesareentitledtotenvotespershare.

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ThenumberofClassAordinarysharesandClassBordinarysharesthatwillbeoutstandingafterthisofferingisbasedon30,872,107ClassAordinarysharesand155,803,022ClassBordinarysharesoutstandingasofSeptember30,2015,andexcludes:

• 15,288,310ClassAordinarysharesissuableupontheexerciseofshareoptionsoutstandingasofSeptember30,2015,withaweighted-averageexercisepriceof$2.23pershare;

• 9,758,363ClassAordinarysharesissuableuponthevestingofRSUsoutstandingasofSeptember30,2015;

• 1,552,500ClassBordinarysharesissuableupontheexerciseofshareoptionsoutstandingasofSeptember30,2015,withaweighted-averageexercisepriceof$0.51pershare;and

• 26,400,000ClassAordinarysharesreservedforfutureissuanceunderourequitycompensationplans,consistingof:

• 20,700,000ClassAordinarysharesreservedforfutureissuanceunderour2015ShareIncentivePlan("2015Plan");and

• 5,700,000ClassAordinarysharesreservedforfutureissuanceunderour2015EmployeeSharePurchasePlan("ESPP").

Our2015PlanandESPP,whichwillbecomeeffectiveontheconsummationofthisoffering,willprovideforannualautomaticincreasesinthenumberofsharesreservedthereunder.Our2015PlanalsowillprovideforincreasesinthenumberofsharesreservedthereunderbasedonawardsunderourAtlassianUKEmployeeShareOptionPlan("ShareOptionPlan"),2013U.S.ShareOptionPlan("2013Plan")and2014RestrictedShareUnitPlan("2014Plan")thatexpire,areforfeitedorotherwiserepurchasedbyus,asmorefullydescribedin"Management—Compensation—EquityCompensationPlans".

10

HoldersofourClassAordinarysharesandClassBordinaryshareswillgenerallyvotetogetherasasingleclass,unlessotherwiserequiredbylaworouramendedandrestatedarticlesofassociation.TheholdersofouroutstandingClassBordinaryshareswillhold

%ofthevotingpowerofouroutstandingsharesfollowingthisofferingandwillhavetheabilitytocontroltheoutcomeofmatterssubmittedtoourshareholdersforapproval,includingtheelectionofourdirectorsandtheapprovalofanychangeincontroltransaction.See"PrincipalShareholders"and"DescriptionofShareCapital"foradditionalinformation.

Concentrationofownership

Uponthecompletionofthisoffering,ourexecutiveofficersanddirectorsandshareholdersholdingmorethan5%ofouroutstandingshares,andtheiraffiliates,willbeneficiallyown,intheaggregate,approximately

%ofouroutstandingshares.

ProposedNASDAQGlobalMarkettradingsymbol

"TEAM"

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Otherthaninourconsolidatedfinancialstatements,andunlessotherwiseindicated,theinformationinthisprospectusassumes:

• thefilingofouramendedandrestatedarticlesofassociation,whichwillbeineffectuponthecompletionofthisoffering;

• theautomaticconversionof(i)alloutstandingconvertibleSeriesApreferencesharesinto12,387,798ClassAordinaryshares,(ii)alloutstandingrestrictedsharesinto15,233,149ClassAordinarysharesand(iii)alloutstandingconvertibleSeriesBpreferencesharesinto15,046,180ClassBordinarysharesasofSeptember30,2015,theconversionofeachofwhichwilloccurimmediatelypriortothecompletionofthisoffering;

• noexerciseoftheunderwriters'optiontopurchaseadditionalClassAordinaryshares;and

• exercisepricesforoptionsforoursharecapitalthataredenotedinAustraliandollarshavebeenconvertedintoU.S.dollarsbasedontheU.S.DepartmentofTreasuryreportingratesofexchangeasofSeptember30,2015,whichprovidesanexchangerateofU.S.$1.00toAUS$1.4230.

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SummaryConsolidatedFinancialandOtherData

Thefollowingtablessummarizeourconsolidatedfinancialandotherdata.WederivedtheconsolidatedstatementsofoperationsdataforthefiscalyearsendedJune30,2013,2014and2015fromourauditedconsolidatedfinancialstatementsincludedelsewhereinthisprospectus.WederivedtheunauditedconsolidatedstatementsofoperationsdataforthethreemonthsendedSeptember30,2014and2015andtheunauditedconsolidatedsummaryoffinancialpositiondataasofSeptember30,2015fromourunauditedconsolidatedfinancialstatementsincludedelsewhereinthisprospectus.WeprepareourconsolidatedfinancialstatementsinaccordancewithInternationalFinancialReportingStandards("IFRS"),whichincludesallstandardsissuedbytheInternationalAccountingStandardsBoard("IASB")andrelatedinterpretationsissuedbytheIFRSInterpretationsCommittee.Wehavepreparedtheunauditedconsolidatedfinancialstatementsonthesamebasisastheauditedconsolidatedfinancialstatementsandhaveincludedalladjustments,consistingonlyofnormalrecurringadjustmentsthat,inouropinion,arenecessarytostatefairlythefinancialinformationsetforthinthosestatements.Ourhistoricalresultspresentedbelowarenotnecessarilyindicativeoffinancialresultstobeachievedinfutureperiods,andourinterimresultsarenotnecessarilyindicativeofresultsthatshouldbeexpectedforthefullfiscalyearoranyotherperiod.Youshouldreadthefollowingsummaryconsolidatedfinancialdatainconjunctionwith"SelectedConsolidatedFinancialandOtherData"and"Management'sDiscussionandAnalysisofFinancialConditionandResultsofOperations"andourconsolidatedfinancialstatementsandrelatednotesincludedelsewhereinthisprospectus.

12

FiscalYearEndedJune30,

ThreeMonthsEnded

September30,

2013 2014 2015 2014 2015

(inthousands,exceptpersharedata)

ConsolidatedStatementsofOperationsData:

Revenues

Subscription $ 28,780 $ 51,007 $ 85,891 $ 17,176 $ 30,467

Maintenance 83,978 112,134 160,373 34,752 50,354

Perpetuallicense 32,789 44,186 57,373 12,917 15,501

Other 2,965 7,782 15,884 3,077 5,500

Totalrevenues 148,512 215,109 319,521 67,922 101,822

Costofrevenues(1)(2) 33,031 37,986 52,932 11,846 16,420

Grossprofit 115,481 177,123 266,589 56,076 85,402

Operatingexpenses

Researchanddevelopment(1)

57,301 78,640 140,853 29,225 45,460

Marketingandsales(1)(2) 18,795 34,968 67,989 11,997 16,262

Generalandadministrative(1) 26,266 41,984 57,330 12,758 17,068

Totaloperatingexpenses 102,362 155,592 266,172 53,980 78,790

Operatingincome 13,119 21,531 417 2,096 6,612

Othernon-operatingincome(expense),net (1,918) 608 (1,318) (881) (137)Financeincome 474 317 226 73 46

Financecosts (272) (228) (74) (16) (8)

Income(loss)beforeincometaxbenefit(expense) 11,403 22,228 (749) 1,272 6,513

Incometaxbenefit(expense) (642) (3,246) 7,524 2,311 (1,431)Netincome $ 10,761 $ 18,982 $ 6,775 $ 3,583 $ 5,082

Netincomepershareattributabletoordinaryshareholders(3):

Basic $ 0.07 $ 0.11 $ 0.04 $ 0.02 $ 0.03

Diluted $ 0.07 $ 0.11 $ 0.04 $ 0.02 $ 0.03

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OurconsolidatedfinancialpositiondataasofSeptember30,2015ispresentedon:

• anactualbasis;and

• aproformaasadjustedbasis,givingeffecttothesaleandissuanceof

ClassAordinarysharesbyusinthisoffering,basedupontheassumedinitialpublicofferingpriceof$

pershare,themidpointoftheestimatedpricerangesetforthonthecoverpageofthisprospectus,afterdeductingtheestimatedunderwritingdiscountsandcommissionsandestimatedofferingexpensespayablebyus.

13

FiscalYearEndedJune30,

ThreeMonthsEnded

September30,

2013 2014 2015 2014 2015

(inthousands,exceptpersharedata)

Weighted-averagesharesoutstandingusedtocomputenetincomepershareattributabletoordinaryshareholders(3):

Basic 140,748 141,530 144,008 144,008 144,008

Diluted 142,558 143,602 145,500 145,488 145,513

Proformanetincomepershareattributabletoordinaryshareholders(3):

Basic

$ 0.04

$ 0.03

Diluted

$ 0.03

$ 0.02

Proformaweighted-averagesharesoutstandingusedtocomputeproformanetincomepershareattributabletoordinaryshareholders(3):

Basic

185,112

187,113

Diluted

204,177

205,827

Amountsincludeshare-basedpaymentexpense,

asfollows:

(1)

Costofrevenues $ 251 $ 625 $ 2,862 $ 452 $ 1,206

Researchanddevelopment

1,189 5,120 22,842 4,632 5,921

Marketingandsales 583 2,068 6,670 1,142 2,742

Generalandadministrative

1,468 3,551 9,160 1,700 4,227

Amountsincludeamortizationofintangibleassets,

asfollows:

(2)

Costofrevenues $ 7,633 $ 7,591 $ 6,417 $ 1,622 $ 1,745

Marketingandsales 129 98 40 8 21

SeeNote17oftheNotestoourConsolidatedFinancialStatementsincludedelsewhereinthisprospectusforanexplanationofthemethodusedtocalculatebasic,dilutedandproformanetincomepershareattributabletoordinaryshareholdersandtheweighted-averagenumberofsharesusedinthecomputationofthepershareamounts.

(3)

AsofSeptember30,2015

Actual

ProForma

asAdjusted

(inthousands)

ConsolidatedStatementofFinancialPositionData:

Cashandcashequivalents $ 208,332 $

Workingcapital 67,927

Totalassets 414,155

Deferredrevenue 143,266

Totalshareholders'equity 215,979

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Theproformaasadjustedinformationsetforthinthetableaboveisillustrativeonlyandwillbeadjustedbasedontheactualinitialpublicofferingpriceandothertermsofthisofferingdeterminedatpricing.A$1.00increaseordecreaseintheassumedinitialpublicofferingpriceof$

perClassAordinaryshare,themidpointoftheestimatedpricerangesetforthonthecoverpageofthisprospectus,wouldincreaseordecreaseeachofourproformaasadjustedcashandcashequivalents,workingcapital,totalassetsandtotalshareholders'equitybyapproximately$

million,assumingthenumberofsharesofferedbyus,assetforthonthecoverpageofthisprospectus,remainsthesame,andafterdeductingestimatedunderwritingdiscountsandcommissionsandestimatedofferingexpensespayablebyus.Similarly,eachincreaseordecreaseof1.0millionsharesinthenumberofClassAordinarysharesofferedbyuswouldincreaseordecreaseeachofourproformaasadjustedcashandcashequivalents,workingcapital,totalassetsandtotalshareholders'equitybyapproximately$

million,assumingtheassumedinitialpublicofferingpriceof$

perClassAordinaryshare,themidpointoftheestimatedpricerangesetforthonthecoverpageofthisprospectus,remainsthesame,andafterdeductingestimatedunderwritingdiscountsandcommissionsandestimatedofferingexpensespayablebyus.

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FiscalYearEndedJune30,

ThreeMonthsEnded

September30,

OtherData(1): 2013 2014 2015 2014 2015

(inthousands)

Non-IFRSoperatingincome(2) $ 24,372 $ 40,584 $ 48,408 $ 11,652 $ 22,474

Non-IFRSnetincome(3) 20,447 35,685 45,522 11,119 18,379

Freecashflow(4) 47,064 65,021 65,545 3,576 8,249

See"SelectedConsolidatedFinancialandOtherData—Non-IFRSFinancialResults"forfurtherinformationonnon-IFRSoperatingincome,non-IFRSnetincomeandfreecashflow,andforareconciliationtothemostcomparableIFRSmeasures.

Non-IFRSoperatingincomeisanon-IFRSfinancialmeasurethatwecalculateasoperatingincomeexcludingshare-basedpaymentexpenseandamortizationofintangibleassets.

Non-IFRSnetincomeisanon-IFRSfinancialmeasurethatwecalculateasnetincomeexcludingshare-basedpaymentexpense,amortizationofintangibleassetsandtherelatedtaxeffectsofthoseitems.

Freecashflowisanon-IFRSfinancialmeasurethatwecalculateasnetcashprovidedbyoperatingactivitieslesspurchasesofpropertyandequipmentandintangibleassets.

(1)

(2)

(3)

(4)

AsofJune30, AsofSeptember30,

2013 2014 2015 2014 2015

Customers 27,676 37,250 48,622 40,070 51,636

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RISKFACTORS

Investing in our Class A ordinary shares involves a high degree of risk. Before making a decision to invest in our Class A ordinary shares, youshould carefully consider the following risks, together with all of the other information contained in this prospectus, including our consolidated financialstatements and related notes. While we believe that the risks and uncertainties described below are the material risks currently facing us, additional risksthat we do not yet know of or that we currently think are immaterial may also arise and harm our business. If any of these risks actually occur, ourbusiness, results of operations, financial condition and prospects could be harmed. In that event, the trading price of our Class A ordinary shares coulddecline, which could cause you to lose all or part of your investment.

RisksRelatedtoOurBusinessandIndustry

Our rapid growth makes it difficult to evaluate our future prospects and may increase the risk that we will not continue to grow at or nearhistorical rates.

Wehavebeengrowingrapidlyoverthelastseveralyears,andasaresult,ourabilitytoforecastourfutureresultsofoperationsissubjecttoanumberofuncertainties,includingourabilitytoeffectivelyplanforandmodelfuturegrowth.Ourrecentandhistoricalgrowthshouldnotbeconsideredindicativeofourfutureperformance.Wehaveencounteredinthepast,andwillencounterinthefuture,risksanduncertaintiesfrequentlyexperiencedbygrowingcompaniesinrapidlychangingindustries.Ifourassumptionsregardingtheserisksanduncertainties,whichweusetoplanandoperateourbusiness,areincorrectorchange,orifwedonotaddresstheseriskssuccessfully,ouroperatingandfinancialresultscoulddiffermateriallyfromourexpectations,ourgrowthratesmayslowandourbusinesswouldsuffer.

We may not be able to sustain our revenue growth rate or maintain profitability in the future.

Ourhistoricalgrowthrateshouldnotbeconsideredindicativeofourfutureperformanceandmaydeclineinthefuture.Infutureperiods,ourrevenuecouldgrowmoreslowlythaninrecentperiodsordeclineforanumberofreasons,includinganyreductionindemandforourproducts,increaseincompetition,limitedabilityto,orourdecisionnotto,increasepricing,contractionofouroverallmarketorourfailuretocapitalizeongrowthopportunities.Inaddition,weexpectexpensestoincreasesubstantiallyinthenearterm,particularlyaswecontinuetomakesignificantinvestmentsinresearchanddevelopmentandtechnologyinfrastructureforourcloudofferings,expandouroperationsgloballyanddevelopnewproductsandfeaturesfor,andenhancementsof,ourexistingproducts.Inaddition,inconnectionwithoperatingasapubliccompany,wewillincursignificantadditionallegal,accountingandotherexpensesthatwedidnotincurasaprivatecompany.Asaresultofthesesignificantinvestments,andinparticularshare-basedcompensationassociatedwithourgrowth,wedonotexpecttoachieveIFRSprofitabilityinfiscalyear2016andmaynotbeabletoachieveIFRSprofitabilityinfutureperiods.Inaddition,theadditionalexpenseswewillincurmaynotleadtosufficientadditionalrevenuetomaintainhistoricalrevenuegrowthratesandprofitability.

The markets in which we participate are intensely competitive, and if we do not compete effectively, our business, results of operations andfinancial condition could be harmed.

Themarketsforoursolutionsarefragmented,rapidlyevolvingandhighlycompetitive,andhaverelativelylowbarrierstoentry.Wefacecompetitionfrombothtraditional,largersoftwarevendorsofferingfullcollaborationandproductivitysuitesandsmallercompaniesofferingpointproductsforfeaturesandusecases.OurprincipalcompetitorsvarydependingontheproductcategoryandincludeMicrosoftCorporation,IBM,Hewlett-PackardCompany,Google,ServiceNow,salesforce.com,Zendeskandseveralsmallersoftwarevendors.Inaddition,someofour

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competitorshavemadeacquisitionstoofferamorecomprehensiveproductorserviceoffering,whichmayallowthemtocompetemoreeffectivelywithourproducts.Weexpectthistrendtocontinueascompaniesattempttostrengthenormaintaintheirmarketpositionsinanevolvingindustry.Companiesresultingfromthesepossibleconsolidationsmaycreatemorecompellingproductofferingsandbeabletooffermoreattractivepricingoptions,makingitmoredifficultforustocompeteeffectively.

Ourcompetitors,particularlyourlargercompetitorswithgreaterfinancialandoperatingresources,maybeabletorespondmorequicklyandeffectivelythanwecantoneworchangingopportunities,technologies,standardsorcustomerrequirements.Withtheintroductionofnewtechnologies,theevolutionofourproducts,andnewmarketentrants,weexpectcompetitiontointensifyinthefuture.Forexample,asweexpandourfocusintonewusecasesorotherproductofferingsbeyondsoftwaredevelopmentteams,weexpectcompetitiontoincrease.Pricingpressuresandincreasedcompetitiongenerallycouldresultinreducedsales,reducedmargins,lossesorthefailureofourproductstoachieveormaintainmorewidespreadmarketacceptance,anyofwhichcouldharmourbusiness,resultsofoperationsandfinancialcondition.

Manyofourcurrentandpotentialcompetitorshavegreaterresourcesthanwedowithestablishedmarketingrelationships,largeenterprisesalesforces,accesstolargercustomerbases,pre-existingcustomerrelationships,andmajordistributionagreementswithconsultants,systemintegratorsandresellers.Additionally,somecurrentandpotentialcustomers,particularlylargeorganizations,haveelected,andmayinthefutureelect,todeveloporacquiretheirowninternalcollaborationandproductivitysoftwaretoolsthatwouldreduceoreliminatethedemandforoursolutions.

Ourproductsseektoservemultiplemarkets,andwearesubjecttocompetitionfromawideandvariedfieldofcompetitors.Somecompetitors,particularlynewandemergingcompanies,couldfocusalltheirenergyandresourcesononeproductlineorusecaseand,asaresult,anyonecompetitorcoulddevelopamoresuccessfulproductorserviceinaparticularmarketwhichcoulddecreaseourmarketshareandharmourbrandrecognitionandresultsofoperations.Forallofthesereasonsandotherswecannotanticipatetoday,wemaynotbeabletocompetesuccessfullyagainstourcurrentandfuturecompetitors,whichcouldharmourbusiness,resultsofoperationsandfinancialcondition.

Our distribution model of offering and deploying our products via both the cloud and on premises increases our expenses, may impactrevenue recognition timing and may pose other challenges to our business.

Weofferandsellourproductsviaboththecloudandonpremisesusingthecustomer'sowninfrastructure.Ourcloudofferingenablesquicksetupandsubscriptionpricing,whileouron-premisesofferingpermitsmorecustomization,aperpetualortermlicensefeestructureandcompleteapplicationcontrol.Historically,ourproductsweredevelopedinthecontextoftheon-premisesoffering,andwehavelessoperatingexperienceofferingandsellingourproductsviaourcloudoffering.Althoughasubstantialmajorityofourrevenuehashistoricallybeengeneratedfromcustomersusingouron-premisesproducts,webelievethatovertimemorecustomerswillmovetothecloudoffering,andthecloudofferingwillbecomemorecentraltoourdistributionmodel.Asmoreofourcustomerstransitiontothecloud,wemaybesubjecttoadditionalcompetitivepressures,whichmayharmourbusiness.Further,asmorecustomerselectourcloudofferingasopposedtoouron-premisesofferings,revenuesfromsuchcustomersistypicallylowerintheinitialyear,whichmayimpactournear-termrevenuegrowthrates.Ifourcloudofferingdoesnotdevelopasquicklyasweexpect,orifweareunabletocontinuetoscaleoursystemstomeettherequirementsofasuccessfullarge,cloudoffering,ourbusinessmaybeharmed.Wearedirectingasignificantportionofourfinancialandoperatingresourcestoimplementarobustcloud

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offeringforourproducts,butevenifwecontinuetomaketheseinvestments,wemaybeunsuccessfulingrowingorimplementingourcloudofferingthatcompetessuccessfullyagainstourcurrentandfuturecompetitorsandourbusiness,resultsofoperationsandfinancialconditioncouldbeharmed.

Our business depends on our customers renewing their subscriptions and maintenance plans and purchasing additional licenses orsubscriptions from us. Any decline in our customer retention or expansion would harm our future results of operations.

Inorderforustomaintainorimproveourresultsofoperations,itisimportantthatourcustomersrenewtheirsubscriptionsandmaintenanceplanswhenexistingcontracttermsexpireandthatweexpandourcommercialrelationshipswithourexistingcustomers.Ourcustomershavenoobligationtorenewtheirsubscriptionsormaintenanceplans,andourcustomersmaynotrenewsubscriptionsormaintenanceplanswithasimilarcontractperiodorwiththesameorgreaternumberofusers.Ourcustomersdonotenterintolong-termcontracts,rathertheyprimarilyhavemonthlyorannualterms.Someofourcustomershaveelectednottorenewtheiragreementswithusanditisdifficulttoaccuratelypredictlong-termcustomerretention.

Ourcustomerretentionandexpansionmaydeclineorfluctuateasaresultofanumberoffactors,includingourcustomers'satisfactionwithourproducts,ourproductsupport,ourprices,thepricesofcompetingsoftwareproducts,reductionsinourcustomers'spendinglevels,newproductreleasesandchangestopackagingofourproductofferings,mergersandacquisitionsaffectingourcustomerbaseortheeffectsofglobaleconomicconditions.Althoughitisimportanttoourbusinessthatourcustomersrenewtheirsubscriptionsandmaintenanceplanswhenexistingcontracttermsexpireandthatweexpandourcommercialrelationshipswithourexistingcustomers,giventhevolumeofourcustomers,wedonottracktheretentionratesofourindividualcustomers.Asaresult,wemaybeunabletotimelyaddressanyretentionissueswithspecificcustomers,whichcouldharmourresultsofoperations.Ifourcustomersdonotpurchaseadditionallicensesorsubscriptionsorrenewtheirsubscriptionsormaintenanceplans,renewonlessfavorabletermsorfailtoaddmoreusers,ourrevenuemaydeclineorgrowlessquickly,whichwouldharmourfutureresultsofoperationsandprospects.

If we are not able to develop new products and enhancements to our products that achieve market acceptance and that keep pace withtechnological developments, our business and results of operations would be harmed.

Ourabilitytoattractnewcustomersandincreaserevenuefromexistingcustomersdependsinlargepartonourabilitytoenhanceandimproveourexistingproductsandtointroducecompellingnewproductsthatreflectthechangingnatureofourmarkets.Thesuccessofanyenhancementtoourproductsdependsonseveralfactors,includingtimelycompletionanddelivery,competitivepricing,adequatequalitytesting,integrationwithexistingtechnologiesandourplatformandoverallmarketacceptance.Anynewproductorservicethatwedevelopmaynotbeintroducedinatimelyorcost-effectivemanner,maycontainbugs,ormaynotachievethemarketacceptancenecessarytogeneratesignificantrevenue.Ifweareunabletosuccessfullydevelopnewproducts,enhanceourexistingproductstomeetcustomerrequirements,orotherwisegainmarketacceptance,ourbusiness,resultsofoperationsandfinancialconditionwouldbeharmed.

If we cannot continue to expand the use of our products beyond our initial focus on software developers, our ability to grow our business maybe harmed.

Ourabilitytogrowourbusinessdependsinpartonourabilitytopersuadecurrentandfuturecustomerstoexpandtheiruseofourproductstoadditionalusecasesbeyondsoftwaredevelopers.Ifwefailtopredictcustomerdemandsorachievefurthermarketacceptanceofourproductswithin

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theseadditionalareasandteams,orifacompetitorestablishesamorewidelyadoptedproductfortheseapplications,ourabilitytogrowourbusinessmaybeharmed.

We invest significantly in research and development, and to the extent our research and development investments do not translate into newproducts or material enhancements to our current products, or if we do not use those investments efficiently, our business and results ofoperations would be harmed.

Akeyelementofourstrategyistoinvestsignificantlyinourresearchanddevelopmenteffortstodevelopnewproductsandenhanceourexistingproductstoaddressadditionalapplicationsandmarkets.Infiscal2014and2015,ourresearchanddevelopmentexpenseswere37%and44%ofourrevenue,respectively,andduringthethreemonthsendedSeptember30,2014and2015,ourresearchanddevelopmentexpenseswere43%and45%ofourrevenue,respectively.Ifwedonotspendourresearchanddevelopmentbudgetefficientlyoreffectivelyoncompellinginnovationandtechnologies,ourbusinessmaybeharmedandwemaynotrealizetheexpectedbenefitsofourstrategy.Moreover,researchanddevelopmentprojectscanbetechnicallychallengingandexpensive.Thenatureoftheseresearchanddevelopmentcyclesmaycauseustoexperiencedelaysbetweenthetimeweincurexpensesassociatedwithresearchanddevelopmentandthetimeweareabletooffercompellingproductsandgeneraterevenue,ifany,fromsuchinvestment.Additionally,anticipatedcustomerdemandforaproductorservicewearedevelopingcoulddecreaseafterthedevelopmentcyclehascommenced,andwewouldnonethelessbeunabletoavoidsubstantialcostsassociatedwiththedevelopmentofanysuchproductorservice.Ifweexpendasignificantamountofresourcesonresearchanddevelopmentandoureffortsdonotleadtothesuccessfulintroductionorimprovementofproductsthatarecompetitiveinourcurrentorfuturemarkets,itwouldharmourbusinessandresultsofoperations.

If we fail to effectively manage our growth, our business and results of operations could be harmed.

Wehaveexperiencedandexpecttocontinuetoexperiencerapidgrowth,whichhasplaced,andmaycontinuetoplace,significantdemandsonourmanagement,operationalandfinancialresources.Forexample,ourheadcounthasgrownfrom533employeesasofJune30,2013to769employeesasofJune30,2014to1,259employeesasofJune30,2015.Inaddition,weoperateglobally,sellourproductstocustomersinmorethan160countries,andhaveemployeesinAustralia,theUnitedStates,theUnitedKingdom,theNetherlands,thePhilippines,JapanandGermany.Weplantocontinuetoexpandouroperationsintoothercountriesinthefuture,whichwillplaceadditionaldemandsonourresourcesandoperations.Wehavealsoexperiencedsignificantgrowthinthenumberofcustomers,users,transactionsanddatathatourproductsandourassociatedinfrastructuresupport.Finally,ourorganizationalstructureisbecomingmorecomplexandwemayneedtoscaleandadaptouroperational,financialandmanagementcontrols,aswellasourreportingsystemsandprocedurestomanagethiscomplexity.Wewillrequiresignificantcapitalexpendituresandtheallocationofmanagementresourcestogrowandchangeintheseareas.Ifwefailtosuccessfullymanageouranticipatedgrowthandchange,thequalityofourproductsmaysuffer,whichcouldnegativelyaffectourbrandandreputationandharmourabilitytoretainandattractcustomers.

If our current marketing model is not effective in attracting new customers, we may need to incur additional expenses to attract new customersand our business and results of operations could be harmed.

Unliketraditionalenterprisesoftwarevendors,whorelyondirectsalesmethodologiesandfacelongsalescycles,complexcustomerrequirementsandsubstantialupfrontsalescosts,weutilizeaviralmarketingmodeltotargetnewcustomers.Throughthisword-of-mouthmarketing,we

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havebeenabletobuildourbrandwithrelativelylowsalesandmarketingcosts.Wealsobuildourcustomerbasethroughvariousonlinemarketingactivitiesaswellastargetedweb-basedcontentandonlinecommunications.Thisstrategyhasallowedustobuildasubstantialcustomerbaseandcommunityofuserswhouseourproductsandactasadvocatesforourbrandandsolutions,oftenwithintheirowncorporateorganizations.Attractingnewcustomersandretainingexistingcustomersrequiresthatwecontinuetoprovidehigh-qualityproductsatanaffordablepriceandconvincecustomersofourvalueproposition.Ifwedonotattractnewcustomersthroughword-of-mouthreferrals,ourrevenuemaygrowmoreslowlythanexpectedordecline.Inaddition,highlevelsofcustomersatisfactionandmarketadoptionarecentraltoourmarketingmodel.Anydecreaseinourcustomers'satisfactionwithourproducts,includingasaresultofactionsoutsideofourcontrol,couldharmword-of-mouthreferralsandourbrand.Ifourcustomerbasedoesnotcontinuetogrowthroughword-of-mouthmarketingandviraladoption,wemayberequiredtoincursignificantlyhighersalesandmarketingexpensesinordertoacquirenewsubscribers,whichcouldharmourbusinessandresultsofoperations.

If our security measures are breached or unauthorized access to customer data is otherwise obtained, our products may be perceived asinsecure, we may lose existing customers or fail to attract new customers, and we may incur significant liabilities.

Useofoursolutionsinvolvethestorage,transmissionandprocessingofourcustomers'proprietarydata,includingpotentiallypersonaloridentifyinginformation.Unauthorizedaccessto,orsecuritybreachesof,ourproductscouldresultintheloss,compromiseorcorruptionofdata,lossofbusiness,severereputationaldamageadverselyaffectingcustomerorinvestorconfidence,regulatoryinvestigationsandorders,litigation,indemnityobligations,damagesforcontractbreach,penaltiesforviolationofapplicablelawsorregulations,significantcostsforremediationandotherliabilities.Wehaveincurredandexpecttoincursignificantexpensestopreventsecuritybreaches,includingdeployingadditionalpersonnelandprotectiontechnologies,trainingemployees,andengagingthird-partyexpertsandconsultants.Ourerrorsandomissionsinsurancecoveragecoveringcertainsecurityandprivacydamagesandclaimexpensesmaynotbesufficienttocompensateforallliabilitiesweincur.

Wehaveinthepastexperiencedbreachesofoursecuritymeasuresandourproductsareatriskforfuturebreachesasaresultofthird-partyaction,oremployee,vendororcontractorerrorormalfeasance.

Becausethetechniquesusedtoobtainunauthorizedaccessortosabotagesystemschangefrequentlyandgenerallyarenotidentifieduntiltheyarelaunchedagainstatarget,wemaybeunabletoanticipatethesetechniquesortoimplementadequatepreventativemeasures.Wemayalsoexperiencesecuritybreachesthatmayremainundetectedforanextendedperiodand,therefore,haveagreaterimpactontheproductsweoffer,theproprietarydatacontainedtherein,andultimatelyonourbusiness.

One of our marketing strategies is to offer free trials or a limited free version or affordable starter license for certain products, and we may notbe able to realize the benefits of this strategy.

Weofferfreetrials,alimitedfreeversionoranaffordablestarterlicenseforcertainproductsinordertopromoteadditionalusage,brandandproductawarenessandadoption.Historically,amajorityofusersneverconverttoapaidversionofourproductsfromthesefreetrialsorlimitedfreeversionsorupgradebeyondthestarterlicense.Ourmarketingstrategyalsodependsinpartonpersuadinguserswhousethefreetrials,freeversionorstarterlicenseofourproductstoconvinceotherswithintheirorganizationtopurchaseanddeployourproducts.Totheextentthattheseusers

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donotbecome,orleadotherstobecome,customers,wewillnotrealizetheintendedbenefitsofthismarketingstrategy,andourabilitytogrowourbusinessmaybeharmed.

Our business model relies on a high volume of transactions and affordable pricing. As lower cost, competitive products are introduced into themarketplace, our ability to generate new customers could be harmed.

Ourbusinessmodelisbasedinpartonsellingourproductsatpriceslowerthancompetingproductsfromothercommercialvendors.Forexample,weofferentry-levelpricingforcertainproductsforsmallteamsatapricethattypicallydoesnotrequirecapitalbudgetapprovalandisorders-of-magnitudelessthanthepriceoftraditionalenterprisesoftware.Asaresult,oursoftwareisfrequentlypurchasedbyfirst-timecustomerstosolvespecificproblemsandnotaspartofastrategictechnologypurchasingdecision.Ascompetitorsenterthemarketwithlowcostalternativestoourproducts,itmaybeincreasinglymoredifficultforustocompeteeffectivelyandourabilitytogarnernewcustomerscouldbeharmed.Wemayalsofromtimetotimeincreaseourprices.Additionally,somecustomersmayconsiderourproductstobediscretionarypurchases,whichmaycontributetoreduceddemandforourofferingsintimesofeconomicuncertainty.Ifweareunabletoselloursoftwareinhighvolume,acrossnewandexistingcustomers,ourbusiness,resultsofoperationsandfinancialconditioncouldbeharmed.

We derive, and expect to continue to derive, a substantial majority of our revenue from a limited number of software products.

Wederive,andexpecttocontinuetoderive,asubstantialmajorityofourrevenuefromourJIRAandConfluenceproducts.RevenuegeneratedfromourJIRAandConfluenceproductscomprisedovertwo-thirdsofourtotalrevenuesforeachofthepriorthreefiscalyears.Assuch,themarketacceptanceoftheseproductsiscriticaltooursuccess.Demandfortheseproductsandourotherproductsisaffectedbyanumberoffactors,manyofwhicharebeyondourcontrol,suchascontinuedmarketacceptanceofourproductsbycustomersforexistingandnewusecases,thetimingofdevelopmentandreleaseofnewproducts,featuresandfunctionalitythatarelowercostalternativesintroducedbyusorourcompetitors,technologicalchangesanddevelopmentswithinthemarketsweserveandgrowthorcontractioninouraddressablemarkets.Ifweareunabletocontinuetomeetcustomerdemandsortoachievemorewidespreadmarketacceptanceofourproducts,ourbusiness,resultsofoperationsandfinancialconditioncouldbeharmed.

If the Atlassian Marketplace does not continue to be successful, our business and results of operations could be harmed.

WeoperateAtlassianMarketplace,anonlinemarketplace,forsellingthird-party,aswellasAtlassian-built,add-onsandextensions.WerelyontheAtlassianMarketplacetosupplementourpromotionaleffortsandbuildawarenessofourproducts,andbelievethatthird-partyadd-onsandextensionsfromtheAtlassianMarketplacefacilitategreaterusageandcustomizationofourproducts.Fromitsinceptionin2012toSeptember30,2015,theAtlassianMarketplacehasgeneratedover$100millioninrevenue,includingover$80millioninrevenueforthesethird-partyvendors.Asaresult,wehavegeneratedover$20millioninrevenuefromtheAtlassianMarketplaceduringthisperiod.Ifthesevendorsanddevelopersstopdevelopingorsupportingtheseadd-onsandextensionsthattheysellonAtlassianMarketplace,ourbusinesscouldbeharmed.Inaddition,third-partyadd-onsandextensionsmaynotmeetthesamequalitystandardsthatweapplytoourowndevelopmenteffortsand,totheextenttheycontainbugsordefects,theymaycreatedisruptionsinourcustomers'useofourproducts,leadtodataloss,damageourbrandandreputationandaffectthecontinueduseofourproducts,anyofwhichcouldharmourbusiness,resultsofoperationsandfinancialcondition.

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Interruptions or performance problems associated with our technology and infrastructure may harm our business and results of operations.

Ourcontinuedgrowthdependsinpartontheabilityofourexistingandpotentialcustomerstoaccessoursolutionsatanytimeandwithinanacceptableamountoftime.Inaddition,werelyalmostexclusivelyonourwebsitesforthedownloadingandpaymentofallourproducts.Wehaveexperienced,andmayinthefutureexperience,disruptions,dataloss,outagesandotherperformanceproblemswithourinfrastructureandwebsitesduetoavarietyoffactors,includinginfrastructurechanges,introductionsofnewfunctionality,humanorsoftwareerrors,capacityconstraints,denialofserviceattacksorothersecurity-relatedincidents.Insomeinstances,wemaynotbeabletoidentifythecauseorcausesoftheseperformanceproblemswithinanacceptableperiodoftime.Itmaybecomeincreasinglydifficulttomaintainandimproveourperformance,especiallyduringpeakusagetimesandasourproductsandwebsitesbecomemorecomplexandourusertrafficincreases.Ifourproductsandwebsitesareunavailableorifourusersareunabletoaccessourproductswithinareasonableamountoftime,oratall,ourbusinesswouldbeharmed.Moreover,wedependonservicesfromvariousthirdparties,suchasAmazonWebServicesandNTTCommunications,tomaintainourinfrastructureanddistributeourproductsviatheInternet.Anydisruptionsintheseservices,includingasaresultofactionsoutsideofourcontrol,wouldsignificantlyimpactthecontinuedperformanceofourproducts.Inthefuture,theseservicesmaynotbeavailabletousoncommerciallyreasonableterms,oratall.Anylossoftherighttouseanyoftheseservicescouldresultindecreasedfunctionalityofourproductsuntilequivalenttechnologyiseitherdevelopedbyusor,ifavailablefromanotherprovider,isidentified,obtainedandintegratedintoourinfrastructure.Totheextentthatwedonoteffectivelyaddresscapacityconstraints,upgradeoursystemsasneeded,andcontinuallydevelopourtechnologyandnetworkarchitecturetoaccommodateactualandanticipatedchangesintechnology,ourbusiness,resultsofoperationsandfinancialconditioncouldbeharmed.

Real or perceived errors, failures, vulnerabilities or bugs in our products could harm our business and results of operations.

Errors,failures,vulnerabilitiesorbugsmayoccurinourproducts,especiallywhenupdatesaredeployedornewproductsarerolledout.Oursolutionsareoftenusedinconnectionwithlarge-scalecomputingenvironmentswithdifferentoperatingsystems,systemmanagementsoftware,equipmentandnetworkingconfigurations,whichmaycauseerrorsorfailuresofproducts,orotheraspectsofthecomputingenvironmentintowhichtheyaredeployed.Inaddition,deploymentofourproductsintocomplicated,large-scalecomputingenvironmentsmayexposeerrors,failures,vulnerabilitiesorbugsinourproducts.Anysucherrors,failures,vulnerabilitiesorbugsmaynotbefounduntilaftertheyaredeployedtoourcustomers.Realorperceivederrors,failures,vulnerabilitiesorbugsinourproductscouldresultinnegativepublicity,lossofcustomerdata,lossofordelayinmarketacceptanceofourproducts,lossofcompetitiveposition,orclaimsbycustomersforlossessustainedbythem,allofwhichcouldharmourbusinessandresultsofoperations.

Any failure to offer high-quality product support may harm our relationships with our customers and our financial results.

Indeployingandusingourproducts,ourcustomersdependonourproductsupportteamstoresolvecomplextechnicalandoperationalissues.Wemaybeunabletorespondquicklyenoughtoaccommodateshort-termincreasesincustomerdemandforproductsupport.Wealsomaybeunabletomodifythenature,scopeanddeliveryofourproductsupporttocompetewithchangesinproductsupportservicesprovidedbyourcompetitors.Increasedcustomerdemandforproductsupport,withoutcorrespondingrevenue,couldincreasecostsandharmourresultsofoperations.Inaddition,aswecontinuetogrowouroperationsandreachaglobalandvastcustomerbase,we

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needtobeabletoprovideefficientproductsupportthatmeetsourcustomers'needsgloballyatscale.Thenumberofourcustomershasgrownsignificantlyandthatwillputadditionalpressureonoursupportorganization.Forexample,thenumberofourcustomershasgrownfrom37,250asofJune30,2014to51,636asofSeptember30,2015.Inordertomeettheseneeds,wehavereliedinthepastandwillcontinuetorelyonthird-partycontractorsandself-serviceproductsupporttoresolvecommonorfrequentlyaskedquestions,whichsupplementourcustomersupportteams.Ifweareunabletoprovideefficientproductsupportgloballyatscale,includingthroughtheuseofthird-partycontractorsandself-servicesupport,ourabilitytogrowouroperationsmaybeharmedandwemayneedtohireadditionalsupportpersonnel,whichcouldharmourresultsofoperations.Oursalesarehighlydependentonourbusinessreputationandonpositiverecommendationsfromourexistingcustomers.Anyfailuretomaintainhigh-qualityproductsupport,oramarketperceptionthatwedonotmaintainhigh-qualityproductsupport,couldharmourreputation,ourabilitytosellourproductstoexistingandprospectivecustomers,andourbusiness,resultsofoperationsandfinancialcondition.

Our lack of a direct salesforce may impede the growth of our business.

Wedonothaveadirectsalesforceandoursalesmodeldoesnotincludetraditional,quota-carryingsalespersonnel.Althoughwebelieveourbusinessmodelcancontinuetoscalewithoutalargeenterprisesalesforce,ourviralmarketingmodelmaynotcontinuetobeassuccessfulasweanticipateandtheabsenceofadirectsalesfunctionmayimpedeourfuturegrowth.Aswecontinuetoscaleourbusiness,asalesinfrastructurecouldassistinreachinglargerenterprisecustomersandgrowingourrevenue.Identifyingandrecruitingqualifiedsalespersonnelandtrainingthemwouldrequiresignificanttime,expenseandattentionandwouldsignificantlyimpactourbusinessmodel.Inaddition,addingsalespersonnelwouldconsiderablychangeourcoststructureandresultsofoperations,andwemayhavetoreduceotherexpenses,suchasourresearchanddevelopmentexpenses,inordertoaccommodateacorrespondingincreaseinsalesandmarketingexpensesandmaintainourprofitability.Ifourlackofadirectsalesforcelimitsusfromreachinglargerenterprisecustomersandgrowingourrevenueandweareunabletohire,developandretaintalentedsalespersonnelinthefuture,ourrevenuegrowthandresultsofoperationsmaybeharmed.

Our quarterly results may fluctuate significantly and may not fully reflect the underlying performance of our business.

Ourquarterlyfinancialresultsmayfluctuateasaresultofavarietyoffactors,manyofwhichareoutsideofourcontrol.Ifourquarterlyfinancialresultsfallbelowtheexpectationsofinvestorsoranysecuritiesanalystswhofollowus,thepriceofourClassAordinarysharescoulddeclinesubstantially.Factorsthatmaycauseourrevenue,resultsofoperationsandcashflowstofluctuatefromquartertoquarterinclude,butarenotlimitedto:

• ourabilitytoattractnewcustomers,retainandincreasesalestoexistingcustomers,andsatisfyourcustomers'requirements;

• changesinourorourcompetitors'pricingpoliciesandofferings;

• newproducts,features,enhancementsorfunctionalitiesintroducedbyourcompetitors;

• theamountandtimingofoperatingcostsandcapitalexpendituresrelatedtotheoperationsandexpansionofourbusiness;

• significantsecuritybreaches,technicaldifficultiesorinterruptionstoourproducts;

• thenumberofnewemployeesadded;

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• changesinforeigncurrencyexchangeratesoraddingadditionalcurrenciesinwhichoursalesaredenominated;

• theamountandtimingofacquisitionsorotherstrategictransactions;

• extraordinaryexpensessuchaslitigationorotherdispute-relatedsettlementpayments;

• generaleconomicconditionsthatmayadverselyaffecteitherourcustomers'abilityorwillingnesstopurchaseadditionallicenses,subscriptionsandmaintenanceplans,delayaprospectivecustomer'spurchasingdecision,reducethevalueofnewlicense,subscriptionormaintenanceplansoraffectcustomerretention;

• theimpactofnewaccountingpronouncements;and

• thetimingofthegrantorvestingofequityawardstoemployees,directorsorconsultants.

Manyofthesefactorsareoutsideofourcontrol,andtheoccurrenceofoneormoreofthemmightcauseourrevenue,resultsofoperationsandcashflowstovarywidely.Assuch,webelievethatquarter-to-quartercomparisonsofourrevenue,resultsofoperationsandcashflowsmaynotbemeaningfulandshouldnotberelieduponasanindicationoffutureperformance.

If we are unable to develop and maintain successful relationships with channel partners, our business, results of operations and financialcondition could be harmed.

Wehaveestablishedrelationshipswithcertainchannelpartnerstodistributeourproducts.Webelievethatcontinuedgrowthinourbusinessisdependentuponidentifying,developingandmaintainingstrategicrelationshipswithourexistingandpotentialchannelpartnersthatcandrivesubstantialrevenueandprovideadditionalvalued-addedservicestoourcustomers.Ouragreementswithourexistingchannelpartnersarenon-exclusive,meaningourchannelpartnersmayoffercustomerstheproductsofseveraldifferentcompanies,includingproductsthatcompetewithours.Theymayalsoceasemarketingourproductswithlimitedornonoticeandwithlittleornopenalty.Weexpectthatanyadditionalchannelpartnersweidentifyanddevelopwillbesimilarlynon-exclusiveandnotboundbyanyrequirementtocontinuetomarketourproducts.Ifwefailtoidentifyadditionalchannelpartners,inatimelyandcost-effectivemanner,oratall,orareunabletoassistourcurrentandfuturechannelpartnersinindependentlydistributinganddeployingourproducts,ourbusiness,resultsofoperationsandfinancialconditioncouldbeharmed.Ifresellersdonoteffectivelymarketandsellourproducts,orfailtomeettheneedsofourcustomers,ourreputationandabilitytogrowourbusinessmayalsobeharmed.

If we are not able to maintain and enhance our brand, our business, results of operations and financial condition may be harmed.

Webelievethatmaintainingandenhancingourreputationasadifferentiatedandcategory-definingcompanyiscriticaltoourrelationshipswithourexistingcustomersandtoourabilitytoattractnewcustomers.Thesuccessfulpromotionofourbrandattributeswilldependonanumberoffactors,includingourchannelpartners'marketingefforts,ourabilitytocontinuetodevelophigh-qualityproductsandourabilitytosuccessfullydifferentiateourproductsfromcompetitiveproducts.Inaddition,independentindustryanalystsoftenprovidereviewsofourproducts,aswellastheproductsofferedbyourcompetitors,andperceptionoftherelativevalueofourproductsinthemarketplacemaybesignificantlyinfluencedbythesereviews.Ifthesereviewsarenegative,orlesspositiveascomparedtothoseofourcompetitors'products,ourbrandmaybeharmed.

Thepromotionofourbrandrequiresustomakesubstantialexpenditures,andweanticipatethattheexpenditureswillincreaseasourmarketbecomesmorecompetitive,asweexpandintonewmarkets,andasmoresalesaregeneratedthroughourchannelpartners.Totheextentthattheseactivitiesyieldincreasedrevenue,thisrevenuemaynotoffsettheincreasedexpenseswe

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incur.Ifwedonotsuccessfullymaintainandenhanceourbrand,ourbusinessmaynotgrow,wemayhavereducedpricingpowerrelativetocompetitors,andwecouldlosecustomersorfailtoattractpotentialcustomers,anyofwhichwouldharmourbusiness,resultsofoperationsandfinancialcondition.

Our global operations subject us to risks that can harm our business, results of operations and financial condition.

Akeyelementofourstrategyistooperategloballyandsellourproductstocustomersacrosstheworld.Operatinggloballyrequiressignificantresourcesandmanagementattentionandwillsubjectustoregulatory,economic,geographicandpoliticalrisks.Inparticular,ourglobaloperationssubjectustoavarietyofadditionalrisksandchallenges,including:

• increasedmanagement,travel,infrastructureandlegalcompliancecostsassociatedwithhavingoperationsinmanycountries;

• difficultiesinenforcingcontracts,includingso-called"clickwrap"contractsthatareenteredintoonline,onwhichwehavehistoricallyreliedaspartofourproductlicensingstrategy,butwhichmaybesubjecttoadditionallegaluncertaintyinsomeforeignjurisdictions;

• increasedfinancialaccountingandreportingburdensandcomplexities;

• requirementsorpreferencesfordomesticproducts,anddifficultiesinreplacingproductsofferedbymoreestablishedorknownregionalcompetitors;

• differingtechnicalstandards,existingorfutureregulatoryandcertificationrequirementsandrequiredfeaturesandfunctionality;

• communicationandintegrationproblemsrelatedtoenteringandservingnewmarketswithdifferentlanguages,culturesandpoliticalsystems;

• compliancewithforeignprivacyandsecuritylawsandregulationsandtherisksandcostsofnon-compliance;

• compliancewithlawsandregulationsforforeignoperations,includinganti-briberylaws(suchastheU.S.ForeignCorruptPracticesAct,theU.S.TravelAct,andtheU.K.BriberyAct),importandexportcontrollaws,tariffs,tradebarriers,economicsanctions,andotherregulatoryorcontractuallimitationsonourabilitytosellourproductsincertainforeignmarkets,andtherisksandcostsofnon-compliance;

• heightenedrisksofunfairorcorruptbusinesspracticesincertaingeographiesthatmayimpactourfinancialresultsandresultinrestatementsofourconsolidatedfinancialstatements;

• fluctuationsincurrencyexchangeratesandrelatedeffectsonourresultsofoperations;

• difficultiesinrepatriatingortransferringfundsfromorconvertingcurrenciesincertaincountries;

• weakeconomicconditionsineachcountryorregionandgeneraleconomicuncertaintyaroundtheworld;

• differinglaborstandards,includingrestrictionsrelatedto,andtheincreasedcostof,terminatingemployeesinsomecountries;

• difficultiesinrecruitingandhiringemployeesincertaincountries;

• thepreferenceforlocalizedsoftwareandlicensingprograms;

• thepreferenceforlocalizedlanguagesupport;

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• reducedprotectionforintellectualpropertyrightsinsomecountriesandpracticaldifficultiesofenforcingrightsabroad;and

• compliancewiththelawsofnumerousforeigntaxingjurisdictions,includingwithholdingobligations,andoverlappingofdifferenttaxregimes.

Compliancewithlawsandregulationsapplicabletoourglobaloperationssubstantiallyincreasesourcostofdoingbusinessinforeignjurisdictions.Wemaybeunabletokeepcurrentwithchangesingovernmentrequirementsastheychangefromtimetotime.Failuretocomplywiththeseregulationscouldharmourbusiness.Inmanycountries,itiscommonforotherstoengageinbusinesspracticesthatareprohibitedbyourinternalpoliciesandproceduresorotherregulationsapplicabletous.Althoughwehaveimplementedpoliciesandproceduresdesignedtoensurecompliancewiththeselawsandpolicies,therecanbenoassurancethatallofouremployees,contractors,partnersandagentswillcomplywiththeselawsandpolicies.Violationsoflawsorkeycontrolpoliciesbyouremployees,contractors,partnersoragentscouldresultindelaysinrevenuerecognition,financialreportingmisstatements,enforcementactions,reputationalharm,disgorgementofprofits,fines,civilandcriminalpenalties,damages,injunctions,othercollateralconsequencesortheprohibitionoftheimportationorexportationofourproductsandcouldharmourbusiness,resultsofoperationsandfinancialcondition.

We depend on our executive officers and other key employees and the loss of one or more of these employees or an inability to attract andretain highly skilled employees could harm our business.

Oursuccessdependslargelyuponthecontinuedservicesofourexecutiveofficersandkeyemployees.Werelyonourleadershipteamandotherkeyemployeesintheareasofresearchanddevelopment,products,operations,security,marketing,IT,supportandgeneralandadministrativefunctions.Fromtimetotime,theremaybechangesinourexecutivemanagementteamresultingfromthehiringordepartureofexecutives,whichcoulddisruptourbusiness.InOctober2015,ourformerChiefFinancialOfficer,ErikBardman,resignedfromthecompanytofocusonmattersrelatedtoapastemployer,includinganinvestigationofcertainaccountingpracticesentirelywithrespecttosuchpastemployment.MurrayDemowasappointedasournewChiefFinancialOfficerinOctober2015toreplaceMr.Bardman.WhileMr.DemohasservedonourboardofdirectorssinceDecember2011,includingasthechairofourauditcommittee,hehasbeenourChiefFinancialOfficerandanexecutiveofficerforashortperiodoftimepriortothisoffering.Inaddition,wedonothaveemploymentagreementswithourexecutiveofficersorotherkeypersonnelthatrequirethemtocontinuetoworkforusforanyspecifiedperiodand,therefore,theycouldterminatetheiremploymentwithusatanytime.Thelossofoneormoreofourexecutiveofficers,especiallyourco-chiefexecutiveofficers,orkeyemployeescouldharmourbusiness.

Inaddition,inordertoexecuteourgrowthplan,wemustattractandretainhighlyqualifiedpersonnel.CompetitionforthesepersonnelinSydney,Australia,theSanFranciscoBayArea,andinotherlocationswherewemaintainoffices,isintense,especiallyforengineersexperiencedindesigninganddevelopingsoftwareandSaaSapplications.Wehave,fromtimetotimeexperienced,andweexpecttocontinuetoexperience,difficultyinhiringandretainingemployeeswithappropriatequalifications.Inparticular,recruitingandhiringseniorproductengineeringpersonneltoworkinourSydney,Australiaoffice,whereourproductteamisconcentrated,hasbeen,andweexpecttocontinuetobe,challenging.Ifweareunabletohiretalentedproductengineeringpersonnel,wemaybeunabletoscaleouroperationsorreleasenewproductsinatimelyfashionand,asaresult,customersatisfactionwithourproductsmaydecline.

Manyofthecompanieswithwhichwecompeteforexperiencedpersonnelhavegreaterresourcesthanwehave.Ifwehireemployeesfromcompetitorsorothercompanies,theseemployersmayattempttoassertthattheemployeesorwehavebreachedcertainlegalobligations,

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resultinginadiversionofourtimeandresources.Inaddition,jobcandidatesandexistingemployeesoftenconsiderthevalueoftheequityawardstheyreceiveinconnectionwiththeiremployment.Ifthevalueorperceivedvalueofourequityawardsdeclines,itmayharmourabilitytorecruitandretainhighlyskilledemployees.Ifwefailtoattractnewpersonnelorfailtoretainandmotivateourcurrentpersonnel,ourbusiness,resultsofoperationsandfinancialconditioncouldbeharmed.

Acquisitions of other businesses, products or technologies could disrupt our business, and we may be unable to integrate acquiredbusinesses and technologies successfully or achieve the expected benefits of such acquisitions.

Wehavecompletedanumberofacquisitionsandexpecttoevaluateandconsideradditionalstrategictransactions,includingacquisitionsof,orinvestmentsin,businesses,technologies,services,products,andotherassetsinthefuture.Wealsomayenterintorelationshipswithotherbusinessestoexpandourproducts,whichcouldinvolvepreferredorexclusivelicenses,additionalchannelsofdistribution,discountpricingorinvestmentsinothercompanies.

Anyacquisition,investmentorbusinessrelationshipmayresultinunforeseenoperatingdifficultiesandexpenditures.Inparticular,wemayencounterdifficultiesassimilatingorintegratingthebusinesses,technologies,products,personneloroperationsoftheacquiredcompanies,particularlyifthekeypersonneloftheacquiredcompanieschoosenottoworkforus,theirsoftwareandservicesarenoteasilyadaptedtoworkwithourproducts,orwehavedifficultyretainingthecustomersofanyacquiredbusinessduetochangesinownership,managementorotherwise.Acquisitionsmayalsodisruptourbusiness,divertourresourcesandrequiresignificantmanagementattentionthatwouldotherwisebeavailablefordevelopmentofourexistingbusiness.Wemaynotsuccessfullyevaluateorutilizetheacquiredtechnologyorpersonnel,oraccuratelyforecastthefinancialimpactofanacquisitiontransaction,includingaccountingcharges.Moreover,theanticipatedbenefitsofanyacquisition,investmentorbusinessrelationshipmaynotberealizedorwemaybeexposedtounknownrisksorliabilities.

Inthefuture,wemaynotbeabletofindothersuitableacquisitioncandidates,andwemaynotbeabletocompleteacquisitionsonfavorableterms,ifatall.Ourpreviousandfutureacquisitionsmaynotachieveourgoals,andanyfutureacquisitionswecompletecouldbeviewednegativelybyusers,customers,developersorinvestors.

Negotiatingthesetransactionscanbetimeconsuming,difficultandexpensive,andourabilitytocompletethesetransactionsmayoftenbesubjecttoapprovalsthatarebeyondourcontrol.Consequently,thesetransactions,evenifannounced,maynotbecompleted.Foroneormoreofthosetransactions,wemay:

• issueadditionalequitysecuritiesthatwoulddiluteourexistingshareholders;

• usecashthatwemayneedinthefuturetooperateourbusiness;

• incurlargecharges,expensesorsubstantialliabilities;

• incurdebtontermsunfavorabletousorthatweareunabletorepay;

• encounterdifficultiesretainingkeyemployeesoftheacquiredcompanyorintegratingdiversesoftwarecodesorbusinesscultures;and

• becomesubjecttoadversetaxconsequences,substantialdepreciation,impairmentordeferredcompensationcharges.

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Our corporate culture has contributed to our success, and if we cannot maintain this culture as we grow, we could lose the innovativeapproach, creativity and teamwork fostered by our culture and our business could be harmed.

Webelievethatacriticalcontributortooursuccesshasbeenourcorporateculture,whichwebelievefostersinnovation,teamworkandanemphasisoncustomer-focusedresults.Inaddition,webelievethatourculturecreatesanenvironmentthatdrivesandperpetuatesourproductstrategyandlow-costdistributionapproach.Aswegrowanddeveloptheinfrastructureofapubliccompany,wemayfinditdifficulttomaintainourcorporateculture.Anyfailuretopreserveourculturecouldharmourfuturesuccess,includingourabilitytoretainandrecruitpersonnel,innovateandoperateeffectivelyandexecuteonourbusinessstrategy.

We face exposure to foreign currency exchange rate fluctuations.

WhilewesellourproductsexclusivelyinU.S.dollars,weincurexpensesincurrenciesotherthantheU.S.dollar,whichexposesustoforeigncurrencyexchangeratefluctuations.BecausealargepercentageofourexpensesaredenominatedintheAustraliandollarandduetotheAustraliandollar'srecentweakeningpositionrelativetotheU.S.dollar,ourresultsofoperationswerepositivelyimpactedbyforeigncurrencyratefluctuationsinrecentperiods.However,thismaynotcontinue,andfuturefluctuationscouldnegativelyimpactourresultsofoperations.Inaddition,inthefuture,wemaytransactinnon-U.S.dollarcurrenciesforourproducts,and,accordingly,futurechangesinthevalueofnon-U.S.dollarcurrenciesrelativetotheU.S.dollarcouldaffectourrevenueandresultsofoperationsduetotransactionalandtranslationalremeasurementsthatarereflectedinourresultsofoperations.

Wedonotcurrentlymaintainameaningfulprogramtohedgeexposuresinnon-U.S.dollarcurrencies.Moreover,otherthanourU.S.subsidiaries,oursubsidiariesmaintainnetassetsthataredenominatedincurrenciesotherthantheU.S.dollar.Inthefuture,wemayusederivativeinstruments,suchasnon-U.S.dollarcurrencyforwardandoptioncontracts,tohedgecertainexposurestofluctuationsinnon-U.S.dollarcurrencyexchangerates.Theuseofsuchhedginginstrumentsmaynotfullyoffsettheadversefinancialeffectsofunfavorablemovementsinnon-U.S.dollarexchangeratesoverthelimitedtimethehedgesareinplace.Moreover,theuseofhedginginstrumentsmayintroduceadditionalrisksifweareunabletostructureeffectivehedgeswithsuchinstruments.

We are subject to government regulation, including import, export, economic sanctions and anti-corruption laws and regulations, that mayexpose us to liabi