2nd Quarter 2021 Earnings - August 9, 2021 - Ellie, living with migraine - Biohaven Pharmaceuticals

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2nd Quarter 2021 Earnings - August 9, 2021 - Ellie, living with migraine - Biohaven Pharmaceuticals
2nd Quarter 2021 Earnings
                                                        August 9, 2021

      Ellie, living with migraine

Ellie, living with migraine
© 2021 Biohaven Pharmaceuticals. All rights reserved.
                                                                           NYSE:BHVN
2nd Quarter 2021 Earnings - August 9, 2021 - Ellie, living with migraine - Biohaven Pharmaceuticals
Agenda

Opening Remarks | Caroline Dircks, Ph.D. Vice President Corporate Operations

Second Quarter Summary and Recent Events| Vlad Coric, M.D. Chief Executive Officer

2Q2021 Financial Results | Jim Engelhart, C.P.A. Chief Financial Officer

Commercial Events | BJ Jones, M.B.A. Chief Commercial Officer Migraine and Common Disease

R&D Update | Elyse Stock, M.D. Chief Medical Officer

Closing Remarks | Vlad Coric, M.D. Chief Executive Officer

Question and Answer Session

AUGUST 2021                               2ND QUARTER 2021 EARNINGS                         2
2nd Quarter 2021 Earnings - August 9, 2021 - Ellie, living with migraine - Biohaven Pharmaceuticals
Forward-Looking Statements and Non-GAAP
This presentation contains forward-looking statements within the meaning of “safe harbor” provisions of the Private Securities Litigation
Reform Act of 1995, including: statements about our plans to develop and commercialize our product candidates, the timing of our planned
regulatory filings, the timing of and our ability to obtain and maintain regulatory approvals for our product candidates and the clinical
potential utility of our product candidates, alone and as compared to other existing or potential treatment options. These statements involve
substantial known and unknown risks, uncertainties and other factors that may cause our actual results, levels of activity, performance or
achievements to be materially different from the information expressed or implied by these forward-looking statements and from the
Company's current expectations. We may not actually achieve the plans, intentions or expectations disclosed in our forward-looking
statements, and you should not place undue reliance on our forward-looking statements. The forward-looking statements in this
presentation represent our views as of the date of this presentation. Subsequent events and developments may cause our views to
change. However, while we may elect to update these forward-looking statements at some point in the future, we have no obligation to do
so except to the extent required by applicable law. You should, therefore, not rely on these forward-looking statements as representing our
views as of any date subsequent to the date of this presentation. Additional important factors to be considered in connection with forward-
looking statements are described in the "Risk Factors" section of Biohaven's Annual Report on Form 10-K for the year ended December
31, 2020, filed with the Securities and Exchange Commission on March 1, 2021, and Biohaven's subsequent filings with the Securities and
Exchange Commission.
This presentation refers to certain non-GAAP financial measures. These non-GAAP financial measures should not be considered
replacements for, and should be read together with, the most comparable GAAP financial measures. Reconciliations of non-GAAP financial
results to the most directly comparable GAAP financial results are included at the end of this presentation.
During this call, presenters will make statements about our approved product Nurtec ODT. Safety information and the full prescribing
information for Nurtec ODT can be found at Nurtec.com.

AUGUST 2021                                                2ND QUARTER 2021 EARNINGS                                                      3
2nd Quarter 2021 Earnings - August 9, 2021 - Ellie, living with migraine - Biohaven Pharmaceuticals
Second Quarter 2021
                                             Summary & Recent Events

Vlad Coric, M.D. | Chief Executive Officer
2nd Quarter 2021 Earnings - August 9, 2021 - Ellie, living with migraine - Biohaven Pharmaceuticals
Company Achievements

     $93M                                                                   >875,000
      Net Sales
                                                                            TRxs of NURTEC
       2Q2021                                                                   to Date

                  $200M                                      55.9%
                      Total                                  New to Brand
                   Net Sales                                    Share
                  Since Launch

AUGUST 2021                      2ND QUARTER 2021 EARNINGS                                5
2nd Quarter 2021 Earnings - August 9, 2021 - Ellie, living with migraine - Biohaven Pharmaceuticals
Oral CGRP Class Continues to Show Robust Market Growth, Nurtec leads
in NBRx share at 55.9%
                             1 Total Rx Volume (7/30)                                                2   New to Brand Rx Share (7/16)
                                                                         21,238
                                                                         20,936

                                                                                                                     Nurtec ODT         55.9%

                                                            Nurtec ODT
              Ubrelvy                                                                                                                    44.1%

                                                                                                                     Ubrelvy

                                                                                                 5/8
                                                                                                 6/5
                                                                                                 7/3

                                                                                                 1/1

                                                                                                 4/9
                                                                                                 5/7
                                                                                                 6/4
                                                                                                 7/2
                                                                                                3/13
                                                                                                3/27
                                                                                                4/10
                                                                                                4/24
                                                                                                5/22
                                                                                                6/19
                                                                                                7/17
                                                                                                7/31
                                                                                                8/14
                                                                                                8/28
                                                                                                9/11
                                                                                                9/25
                                                                                                10/9
                                                                                                11/6
                                                                                                12/4

                                                                                                1/15
                                                                                                1/29
                                                                                                2/12
                                                                                                2/26
                                                                                                3/12
                                                                                                3/26
                                                                                                4/23
                                                                                                5/21
                                                                                                6/18
                                                                                                7/16
                                                                                               10/23
                                                                                               11/20
                                                                                               12/18
               1/24
               2/14

               3/27
               4/17

               5/29
               6/19
               7/10
               7/31
               8/21
               9/11
               10/2

               12/4

               1/15

               2/26
               3/19

               4/30
               5/21
               6/11

               7/23
              10/23
              11/13

              12/25
                3/6

                5/8

                2/5

                4/9

                7/2
                                            Week ending                                                          Week ending

  KEY INSIGHTS
  • Nurtec TRx launch curve shows strong growth consistent with the class, with the brand steadily growing
    NBRx leadership through the months of June and July to achieve 55.9% share
  • Oral CGRP market for migraine on track to reach blockbuster status in U.S. market alone

Source: TRx and NBRx through 7/16/21, IQVIA NPA-MD, accessed 7/26/2021

AUGUST 2021                                                              2ND QUARTER 2021 EARNINGS                                               6
2nd Quarter 2021 Earnings - August 9, 2021 - Ellie, living with migraine - Biohaven Pharmaceuticals
Oral CGRPs Have Significant Growth Opportunity Ahead vs Triptans

                             TRx Volume vs Triptans¹                                                                         NBRx Volume vs Triptans²

                                                                                                                                  Quarterly
                                                             3,924,354
                                                                                                                                 NBRx volume                    577,863
                             Cumulative
                             TRx volume

                                                                                                                                     21%
                                11%
                                                                                                                                     121,508
                                476,222

                                  2Q21                         2Q21                                                                    2Q21                      2Q21

                            CGRP orals3                     Triptans                                                            CGRP orals3                     Triptans

Source: 1. TRX numbers cover 2Q2021, IQVIA SMART, accessed 8/4. 2. NBRx numbers cover 2Q2021, IQVIA XPO, accessed 7/27. 3. CGRP orals = Nurtec ODT & Ubrelvy.

AUGUST 2021                                                                           2ND QUARTER 2021 EARNINGS                                                            7
2nd Quarter 2021 Earnings - August 9, 2021 - Ellie, living with migraine - Biohaven Pharmaceuticals
Orals CGRPs Have Driven CGRP Growth in 2020 and 2021 (vs mAbs)

                                                                                            CGRP Weekly TRx
140,000

120,000

100,000
                                                                                                                                                        Oral CGRP1
 80,000

 60,000
                                                                                                                                                     Injectable mAb2
 40,000

 20,000

       0
     6/ 8

     7/ 8

     8/ 8

     9/ 8
    10 18

     2/ 9

     3/ 9

     4/ 9

     5/ 9

     6/ 9

     7/ 9

     8/ 9

     9/ 9
    10 19

     2/ 0

     3/ 0

     4/ 0

     5/ 0

     6/ 0

     7/ 0

     8/ 0

     9/ 0
    10 20

     2/ 1

     3/ 1

     4/ 1

     5/ 1

     6/ 1
             1
    1 1 18

    1 2 18

     1/ 8

    1 1 19

    1 2 19

     1/ 9

    1 1 20

    1 2 20

     1/ 0
            1

            1

            2
          /1

          /1

          /1

          /1

          /1

          /1

          /1

          /1

          /1

          /1

          /1

          /1

          /2

          /2

          /2

          /2

          /2

          /2

          /2

          /2

          /2

          /2

          /2

          /2

          /2

          /2
         5/

         5/

         5/

         5/

         5/

         5/

         5/

         5/

         5/
          /

          /

          /
        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25

        25
       /2

       /2

       /2

       /2

       /2

       /2

       /2

       /2

       /2
     5/

Source: IQVIA SMART: TRx Volume to 7/16/2021, accessed 7/26/2021. 1. Oral CGRP = Ubrelvy, Nurtec ODT; 2. Injectable mAb = Emgality, Ajovy, Aimovig

AUGUST 2021                                                                              2ND QUARTER 2021 EARNINGS                                                 8
2nd Quarter 2021 Earnings - August 9, 2021 - Ellie, living with migraine - Biohaven Pharmaceuticals
Product Patent Awarded for ODT Formulation, Extends Company's IP
for CGRP Platform into 2039

                               New patent awarded to the Company by
                               the United States Patent and Trademark
                               Office for our drug product, Nurtec ODT
                               (rimegepant), in an ODT form
                                           Covers rimegepant as well as other
                                           CGRP inhibitors

                                           Patent expires in March 2039, not including
                                           possible extensions of up to 5 years

AUGUST 2021                 2ND QUARTER 2021 EARNINGS                                    9
2nd Quarter 2021 Earnings - August 9, 2021 - Ellie, living with migraine - Biohaven Pharmaceuticals
Unparalleled CGRP-Antagonist Franchise

                                 Biohaven’s CGRP Platform

               Nurtec® ODT                 Zavegepant                   Next-GEN CGRPs

              RAPID DISSOLVING   INTRANASAL                ORAL            MULTIPLE
                                                                         FORMULATIONS

                                                                                5
                                                                              ADVANCED
                                                                              MOLECULES

                Launched 1Q20     2nd Ph 3 trial      Ph 3 prevention        BHV-3100
                                 underway 4Q20         Started 1Q21       Ph 1 started 2Q21

                                                                          Advanced Leads
                                                                          4 Oral Follow-Ups

AUGUST 2021                            2ND QUARTER 2021 EARNINGS                              10
CGRP Franchise: Near-Term Value Inflection Milestones

                                                                    MIGRAINE CHRONIC
                                                      ZAVEGEPANT    ORAL QD

                                                                                                    TOP-LINE
                                                                                                     4Q22
                                                      MIGRAINE ULTRA-
                                     ZAVEGEPANT       RAPID ACUTE
                                                      INTRANASAL
                                                                                       SUBMISSION
                                                                                          4Q21

                                      MIGRAINE PEDIATRIC
                                      PHASE 3 START

                          MIGRAINE PREVENTION
                          APPROVED

              MIGRAINE ACUTE
              APPROVED

AUGUST 2021                             2ND QUARTER 2021 EARNINGS                                          11
Rimegepant Global Regulatory Expansion in Migraine

                                  2            Acute Migraine                                  9             Acute and Dual
                                                                                                             By end of 2021
                             APPROVALS                                                  SUBMISSIONS

              Europe
              Dual | 1Q21

                                                                                                                                              Japan
                                                                                                                  China                       Ph 2/3 | 4Q21
                                                      Lebanon
                                                      Acute | 3Q21                                                Ph 3 | 4Q20
                            Israel
                            Acute | APPROVED                         Kuwait                                                     Korea
                                                                     Acute | 4Q20                                               Ph 3 | 4Q20

                                                 Bahrain                            Qatar
                                                 Acute | 4Q20                       Acute | 3Q21

                                               Saudi Arabia
                                               Acute | 1Q21                           United Arab Emirates
                                                                                      Acute | APPROVED

                                                                               Oman
                                                                               Acute | 3Q21

AUGUST 2021                                                          2ND QUARTER 2021 EARNINGS                                                            12
Neuroinnovation Pipeline: Near-Term Milestones

         VERDIPERSTAT       VERDIPERSTAT                       TRORILUZOLE      TRORILUZOLE

               TOP-LINE   COMPLETE ENROLLMENT                        TOP-LINE     TOP-LINE
                 3Q21            4Q21                                  1H22         2H22

              MULTIPLE     AMYOTROPHIC                    SPINOCEREBELLAR        OBSESSIVE
               SYSTEM        LATERAL                           ATAXIA           COMPULSIVE
              ATROPHY       SCLEROSIS                                            DISORDER

AUGUST 2021                              2ND QUARTER 2021 EARNINGS                            13
Ellie W
                                Actual Nurtec® ODT Patient

TAKE CONTROL OF MIGRAINE WITH

one medication
2Q21 Financial Results

Jim Engelhart, C.P.A. | Chief Financial Officer
Second Quarter Results (Unaudited)

                                                                                                        GAAP Reported                                   Non-GAAP Adjusted
$ Millions, except net loss per share — basis and diluted

                                                                                             Q2 2021              Q2 2020              Change        Q2 2021    Q2 2020    Change

Product Revenue, net — NURTEC ODT                                                                  $92.9                  $9.7              $83.2

R&D expense                                                                                          77.4                 42.4               35.0       $67.7      $36.0     $31.7

SG&A expense                                                                                       170.1                124.8                45.3       153.7      119.5      34.3

Net loss                                                                                         (210.6)              (180.9)               (29.7)    (170.9)    (150.0)     (20.9)

Net loss per share — basic and diluted                                                           $(3.23)              $(3.08)              $(0.15)    $(2.62)    $(2.55)    $(0.07)

Note: see slides 34-35 for an explanation of non-GAAP financial measures and a reconciliation of GAAP to Non-GAAP adjusted amounts shown

AUGUST 2021                                                                                2ND QUARTER 2021 EARNINGS                                                             16
Year-to-Date Results (Unaudited)

                                                                                                        GAAP Reported                                    Non-GAAP Adjusted
$ Millions, except net loss per share — basis and diluted

                                                                                           YTD 2021 YTD 2020                           Change        YTD 2021 YTD 2020     Change

Product Revenue, net — NURTEC ODT                                                                 $136.8                $10.8              $125.9

R&D expense                                                                                        184.5                  98.5               86.0       $141.8    $85.8      $56.0

SG&A expense                                                                                       329.6                220.4               109.2        284.6    204.4       80.2

Net loss                                                                                         (475.6)              (353.9)              (121.7)     (359.3)   (284.7)     (74.6)

Net loss per share — basic and diluted                                                           $(7.48)              $(6.15)              $(1.33)     $(5.65)   $(4.94)    $(0.71)

Note: see slides 34-35 for an explanation of non-GAAP financial measures and a reconciliation of GAAP to Non-GAAP adjusted amounts shown

AUGUST 2021                                                                                2ND QUARTER 2021 EARNINGS                                                             17
Capital Position ($ Millions)

Cash, cash equivalents, and marketable securities
                                                                           $368.0   Access to
@ June 30, 2021
                                                                                    $590M+
Cash immediately available to draw from Sixth Street financing             $225.0   in capital
Additional proceeds to be received over next 7 calendar quarters
                                                                           $164.8
from RPI Series B preferred share issuances

AUGUST 2021                                    2ND QUARTER 2021 EARNINGS                         18
Commercial Events

BJ Jones, M.B.A. | Chief Commercial Officer Migraine and Common Disease
Nurtec® ODT Has Gained Significant Market Share in the Weeks Post
Prevention Approval
                                                  NBRx Share                                                                                                                         TRx Share
 60%                                                                                                                                 60%

                                                    Prevention                                                                                                                      Prevention
                                                     Approval                       Nurtec ODT                          55.9%
                                                                                                                                                                                     Approval

 55%                                                                                                                                 55%
                                                                                                                                                                                                                                   Ubrelvy
                                                                                                                                                                                                                                                        50.4%

 50%                                                                                                                                 50%

                                                                                                                                                                                                                                                        49.6%

 45%                                                                                   Ubrelvy                                       45%                                                                                    Nurtec ODT
                                                                                                                        44.1%

 40%                                                                                                                                 40%
                      4/16

                             4/23

                                    4/30

                                                 5/14

                                                        5/21

                                                               5/28

                                                                      6/04

                                                                             6/11

                                                                                    6/18

                                                                                           6/25

                                                                                                              7/16

                                                                                                                      7/23

                                                                                                                             7/30

                                                                                                                                                       4/16

                                                                                                                                                              4/23

                                                                                                                                                                     4/30

                                                                                                                                                                                  5/14

                                                                                                                                                                                         5/21

                                                                                                                                                                                                5/28

                                                                                                                                                                                                       6/04

                                                                                                                                                                                                              6/11

                                                                                                                                                                                                                     6/18

                                                                                                                                                                                                                            6/25

                                                                                                                                                                                                                                               7/16

                                                                                                                                                                                                                                                      7/23

                                                                                                                                                                                                                                                             7/30
          4/2

                4/9

                                           5/7

                                                                                                  7/2

                                                                                                        7/9

                                                                                                                                           4/2

                                                                                                                                                 4/9

                                                                                                                                                                            5/7

                                                                                                                                                                                                                                   7/2

                                                                                                                                                                                                                                         7/9
Source: IQVIA Market Dynamics, IQVIA NPA                                                          Includes entire oral CGRP market

AUGUST 2021                                                                                                          2ND QUARTER 2021 EARNINGS                                                                                                                 20
Significant Unmet Need

           PREVENTION =                     DESPERATION FOR                      THE INJECTION
         TOO FEW, TOO LATE                   BETTER OPTIONS                     BARRIER IS REAL

                                      84%
                                      of people taking a Preventive
                                      treatment wish there was a
                                      better option

  15%                                                                    65%
  of people who meet clinical                                            of people do not want to
  criteria for Preventive treatment                                      receive an injection as a
  actually use it                                                        preventive medication

AUGUST 2021                                  2ND QUARTER 2021 EARNINGS                               21
Redefining the Prevention Market Opportunity

          CURRENT
          INJECTIBLE
          PREVENTIVE    Novel
          MIGRAINE      Injectables              500K
          MARKET

          BROADER       Topiramate,
          PREVENTIVE    Gabapentin,              1.1M
          MARKET        Tcas
          OPPORTUNITY

                                                 7.0M
                                               Rx Therapy

          ACUTE PLUS
                                                 19.5M
                                         Diagnosed with Migraine

          ACUTE                                   39M
                                        People with Migraine in US

AUGUST 2021                           2ND QUARTER 2021 EARNINGS      22
The First and Only Medication Proven to Treat and Prevent Migraine

              Dissolving the line between acute and preventive treatment

                                        DUAL-THERAPY
                                     MIGRAINE TREATMENT

              ACUTE                                             PREVENTIVE
                   Treatment                                    Treatment

AUGUST 2021                         2ND QUARTER 2021 EARNINGS               23
Nurtec® ODT Provides New Hope

              THE HALO FOR             HCPS ARE LIKELY TO RX                        DESIRE FOR
              ACUTE IS REAL             FOR MULTIPLE USES                           FLEXIBILITY

                                    77%
                ACUTE               highly likely to Rx for persistent,
                                    every other day
                                                                          67%
                                                                          of patients say they want a drug
                                                                          that treats and prevents

                                    60%
  85%
                                    also likely to prescribe for
                                    ‘intermittent’ or ‘preemptive’ use

  of HCPs will Rx more for
  Acute as a result of Preventive
  indication                          WEATHER      HORMONAL
                                                    CHANGES
                                                                STRESS

AUGUST 2021                                 2ND QUARTER 2021 EARNINGS                                        24
Broad Commercial Coverage:
High Impact Commercial PBM and Health Plan Wins

                                                        89%
                                                        COVERAGE

                                                       235M+
                                            TOTAL COVERED LIVES IN ALL CHANNELS

AUGUST 2021                2ND QUARTER 2021 EARNINGS                              25
Nurtec ODC has changed my life. I have suffered from migraines
                 for decades and have tried countless migraine medications. I have
                 never found the relief that this one pill achieves every single time.
                 I no longer waste days in bed missing time with my family or
                 missing time from work.
                                                                             — Sabrina

                                                                                              I think my neurologist
                          Nurtec ODT has literally changed my life. I never thought it        chose Nurtec over
                          would really work, especially something that just dissolved         Ubrelvy because it’s
                          in my mouth, but it really does. I go from debilitating pain        also approved as a
                          to relief in literally 30 minutes. By the 2 hour mark, I forgot     preventative in case
                          I even had a migraine. I read the website and stories and           I need one in the
                          I was ever so hopeful, but honestly didn’t believe it would         future. I’m only
                          work like that for me. I was hoping for, at best, a little relief   having like 4 migraine
                          with minimal side effects compared to the other prescription        days a month right
medications. I write this now completely pain and side effect free. I cannot really           now but I was at
describe how Nurtec has given me back my life.                                                15+ for the last half
                                                                  Thank you so much!          of 2020.
                                                                  Melinda and family                        — Alana
R&D Update

Elyse Stock, M.D. | Chief Medical Officer
Expansion of CGRP Portfolio: Following the Science of CGRP

                 First and only
                                  ACUTE AND
          migraine medication     PREVENTION
          to treat and prevent                                                                      Europe
                                                                                                    Japan
                                                                                          GLOBAL
                                                                                                    China
                                                                                        EXPANSION
                                                                                                    Korea
                                                                                                    Middle East and Israel

 Child and     EXPANSION
Adolescent     INTO
age groups     PEDIATRICS

                                                                                CGRP MEDIATED:   Psoriasis
                                                                                 NON-MIGRAINE    Asthma
                                                                                      DISEASES   Undisclosed
         Post-traumatic Headache
                                      MIGRAINE
             Trigeminal Neuralgia     ADJACENCIES
                     Undisclosed

AUGUST 2021                                         2ND QUARTER 2021 EARNINGS                                        28
Multiple Opportunities Across Multiple Platforms

 PLATFORM                                                       DRUG NAME                                                         OPPORTUNITIES
                                                                                                                                  •   US NURTEC ODT | Acute Migraine
                                                                                                                                  •   US NURTEC ODT | Migraine Prevention
                                                                Rimegepant                                                        •   EX-US (EU, Japan, China, Korea, Middle East, Israel)
                                                                Small molecule/NCE                                                •   Planned Migraine Adjacencies
                                                                                                                                  •   Planned Non-Migraine Indications
                                                                                                                                  •   Pediatrics
 CALCITONIN GENE-RELATED
                                                                                                                                  •   US |Intranasal: Acute Migraine
 PEPTIDE (CGRP)                                                 Zavegepant                                                        •   US | Oral: Prevention
                                                                Small molecule/NCE                                                •   COVID19 US | Respiratory Complications
                                                                                                                                  •   Planned Non-Migraine Indications

                                                                BHV-3100                                                          Phase 1 initiated
                                                                Small molecule/NCE

                                                                Troriluzole                                                       • Spinocerebellar Ataxia (SCA)
                                                                NCE prodrug of riluzole                                           • Obsessive-Compulsive Disorder (OCD)
 GLUTAMATE
                                                                BHV-5000/5500                                                     Neurologic/Neuropsychiatric Indications
                                                                NCE NMDA antagonist

                                                                Verdiperstat                                                      • Multiple System Atrophy (MSA)
 MYELOPEROXIDASE (MPO)                                          NCE oral MPO inhibitor                                            • Amyotrophic Lateral Sclerosis (ALS)

                                                                UC1MT                 TDP43                 MODE                  • Multiple myeloma
 BIOHAVEN LABS                                                  Metallothionein       MATE                  ARM                   • COVID-19
                                                                                                                                  • Undisclosed

NCE, new chemical entity; TDP-43: TAR DNA-binding protein 43 UC1MT: monoclonal antibody targeting extracellular metallothionein

AUGUST 2021                                                                         2ND QUARTER 2021 EARNINGS                                                                                29
We Follow the Science

                         Making streamlined and rational decisions based on
                      well designed studies and the scientific data they generate

Rational and educated risk                      Fostering innovative                                Keeping the patient
 taking while maintaining                        partnerships and                                      at the center
     scientific integrity                         collaborations                                       of all we do

                       Optimization of drug                                 Nurturing and growing
                      design and formulations                                 our internal talent

AUGUST 2021                                     2ND QUARTER 2021 EARNINGS                                                 30
Company Achievements

     $93M                                                                   >875,000
      Net Sales
                                                                            TRxs of NURTEC
       2Q2021                                                                   to Date

                  $200M                                      55.9%
                      Total                                  New to Brand
                   Net Sales                                    Share
                  Since Launch

AUGUST 2021                      2ND QUARTER 2021 EARNINGS                                31
THANK YOU!
Appendix: Reconciliation
of GAAP to Non-GAAP
Financial Measures
Non-GAAP Financial Measures (Unaudited)
This presentation includes financial results prepared in accordance with accounting principles generally accepted in the United States (GAAP), and also certain non-GAAP financial measures. In particular,
Biohaven has provided non-GAAP adjusted research and development expense, non-GAAP adjusted selling, general and administrative expense, and non-GAAP adjusted net loss and adjusted net loss per
share, adjusted to exclude the items below. Non-GAAP financial measures are not an alternative for financial measures prepared in accordance with GAAP. However, Biohaven believes the presentation of non-
GAAP adjusted research and development expense, non-GAAP adjusted selling, general and administrative expense, and non-GAAP adjusted net loss and adjusted net loss per share, when viewed in
conjunction with our GAAP results, provides investors with a more meaningful understanding of our ongoing operating performance. These measures exclude (i) non-cash share-based compensation that is
substantially dependent on changes in the market price of our common shares, (ii) non-cash interest expense related to the accounting for our mandatorily redeemable preferred shares and liability related to
sale of future royalties, which are in excess of the actual interest owed, (iii) changes in the fair value of our derivative liability, which does not correlate to our actual cash payment obligations in the relevant
periods, (iv) gains or losses from equity method investment, which are non-cash and based on the financial results and valuation of another company that we did not manage or control, (v) collaboration and
license upfront expenses, which we do not believe are normal, recurring operating expenses due to their nature, variability of amounts, and lack of predictability as to occurrence and/or timing, and (vi) non-
routine accrued development milestone expenses.

We believe the presentation of these non-GAAP financial measures provides useful information to management and investors regarding Biohaven’s results of operations. When GAAP financial measures are
viewed in conjunction with these non-GAAP financial measures, we believe investors are provided with a more meaningful understanding of Biohaven’s ongoing operating performance and are better able to
compare Biohaven’s performance between periods. In addition, these non-GAAP financial measures are among those indicators Biohaven uses as a basis for evaluating performance and planning and
forecasting future periods. These non-GAAP financial measures are not intended to be considered in isolation or as a substitute for GAAP financial measures. A reconciliation between these non-GAAP
measures and the most directly comparable GAAP measures is provided below.

$ Millions, except net loss per share — basic and diluted                                                                         Three Months Ended June 30,                  Six Months Ended June 30,
                                                                                                                                             2021                 2020                    2021                 2020
 Reconciliation of GAAP to Non-GAAP adjusted research and development expense:
 GAAP research and development expense                                                                                                       $77.4                $42.4                 $184.5                $98.5
  Less: non-cash share-based compensation expense                                                                                             (9.3)                (6.4)                 (29.3)               (12.7)
  Less: collaboration and license upfront expenses                                                                                                -                    -                  (7.9)                    -
  Less: accrued development milestone payments                                                                                                (0.5)                    -                  (5.5)                    -
 Non-GAAP adjusted research and development expense                                                                                          $67.7                $36.0                 $141.8                $85.8

Reconciliation of GAAP to Non-GAAP adjusted selling, general and administrative expense:
 GAAP selling, general and administrative expense                                                                                          $170.1               $124.8                  $329.6               $220.4
  Less: non-cash share-based compensation expense                                                                                           (16.3)                (5.3)                  (45.0)               (16.0)
 Non-GAAP adjusted selling, general and administrative expense                                                                             $153.7               $119.5                  $284.6               $204.4

AUGUST 2021                                                                               2ND QUARTER 2021 EARNINGS                                                                                               34
Non-GAAP Financial Measures (Unaudited) — Continued

                                                                                                      Three Months Ended              Six Months Ended
$ Millions, except net loss per share — basic and diluted                                             June 30,                        June 30,
                                                                                                             2021             2020            2021          2020
 Reconciliation of GAAP to Non-GAAP adjusted net loss:
 GAAP net loss                                                                                            $(210.6)         $(180.9)       $(475.6)       $(353.9)
  Add: non-cash share-based compensation expense                                                              25.6             11.8           74.3           28.6
  Add: non-cash interest expense on mandatorily redeemable preferred shares                                      -              7.0            7.9           12.6
  Add: non-cash interest expense on liability related to sale of future royalties                             12.2             11.3           24.1           20.0
  Add: change in fair value of derivatives                                                                     1.5            (0.7)            1.7            5.1
  Add: (gain) loss from equity method investment                                                                 -              1.5          (5.3)            2.9
  Add: collaboration and license upfront expenses                                                                -                -            7.9              -
  Add: accrued development milestone payments                                                                  0.5                -            5.5              -
 Non-GAAP adjusted net loss                                                                               $(170.9)         $(150.0)       $(359.3)       $(284.7)

Reconciliation of GAAP to Non-GAAP adjusted net loss per share — basic and diluted:
 GAAP net loss per share — basic and diluted                                                               $(3.23)          $(3.08)         $(7.48)       $(6.15)
  Add: non-cash share-based compensation expense                                                              0.39             0.20            1.17          0.51
  Add: non-cash interest expense on mandatorily redeemable preferred shares                                      -             0.12            0.12          0.22
  Add: non-cash interest expense on liability related to sale of future royalties                             0.19             0.19            0.38          0.35
  Add: change in fair value of derivatives                                                                    0.02           (0.01)            0.03          0.09
  Add: (gain) loss from equity method investment                                                                 -             0.03          (0.08)          0.05
  Add: collaboration and license upfront fees                                                                    -                -            0.12             -
  Add: accrued development milestone payments                                                                 0.01                -            0.09             -
 Non-GAAP adjusted net loss per share — basic and diluted                                                  $(2.62)          $(2.55)         $(5.65)       $(4.94)

AUGUST 2021                                                               2ND QUARTER 2021 EARNINGS                                                           35
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