Longboard Pharmaceuticals Investor Presentation — September 2021

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September 2021Corporate Presentation

Forward -Looking Statements

This presentation contains forward -looking statements about Longboard Pharmaceuticals, Inc.(“we,”“Longboard” orthe“Company”), including statements

regarding :ourfuture results ofoperations and financial position ;business strategy ;thetiming, costs and conduct ofourpreclinical studies and clinical trials for

our product candidates ;thetiming and likelihood ofregulatory filings and approvals forour product candidates ;our intellectual property ;our ability to

commercialize ourproduct candidates, ifapproved ;and other statements that arenothistorical facts, including statements that may include words such as“will”,

“may”,“can”,“intend”, “plan”,“expect”, “believe”, “potential” and similar words .For such statements, weclaim theprotection ofthePrivate Securities

Litigation Reform Actof1995 .These forward -looking statements aresubject toanumber ofrisks, uncertainties and assumptions, including, butnotlimited to:our

limited operating history ;netlosses ;our expectation that wewill incur netlosses fortheforeseeable future, and that wemay never beprofitable ;our need for

additional funding and related risks forourbusiness, product development programs and future commercialization activities ;thetiming and success ofclinical

trials weconduct ;theability toobtain and maintain regulatory approval ofour product candidates ;theability tocommercialize our product candidates ;our

ability tocompete inthemarketplace ;risks regarding ourlicense and dependencies onothers ;ourability toobtain and maintain intellectual property protection

and freedom tooperate forourproduct candidates ;ourability tomanage ourgrowth ;and other risks and factors disclosed inourfilings with theU.S.Securities

and Exchange Commission .Weoperate inavery competitive and rapidly changing environment .New risks emerge from time totime .Itisnotpossible forour

management topredict allrisks, norcanweassess theimpact ofallfactors onourbusiness ortheextent towhich any factor, orcombination offactors, may cause

actual results todiffer materially from those contained inany forward -looking statements wemay make .The forward -looking events and circumstances

discussed inthis presentation may notoccur and actual results could differ materially and adversely from those anticipated orimplied intheforward -looking

statements .Except asrequired bylaw, weassume noresponsibility fortheaccuracy and completeness oftheforward -looking statements, and weundertake no

obligation toupdate any forward -looking statements after thedate ofthis presentation toconform these statements toactual results ortochanges inour