The following discussion of our financial condition and results of operations
should be read in conjunction with our Condensed Consolidated Financial
Statements and the related Notes thereto included in this Quarterly Report on
Form 10-Q. This discussion contains forward-looking statements that involve
risks and uncertainties. When reviewing the discussion below, you should keep in
mind the substantial risks and uncertainties that could impact our business. In
particular, we encourage you to review the risk factor related to the impact of
the coronavirus pandemic, "The COVID-19 pandemic could continue to materially
adversely affect our business, results of operations and financial condition."
described in "Risk Factors" in Part II, Item 1A in this Quarterly Report on Form
10-Q, amongst the other risk factors. These risks and uncertainties could cause
actual results to differ significantly from those projected in forward-looking
statements contained in this report or implied by past results and trends.
Forward-looking statements are statements that attempt to forecast or anticipate
future developments in our business, financial condition or results of
operations. See the section titled "Forward-Looking Statements" that appears at
the beginning of this Quarterly Report on Form 10-Q. These statements, like all
statements in this report, speak only as of the date of this Quarterly Report on
Form 10-Q (unless another date is indicated), and, except as required by law, we
undertake no obligation to update or revise these statements in light of future
developments. Our Condensed Consolidated Financial Statements have been prepared
in accordance with United States (U.S.) generally accepted accounting principles
(U.S. GAAP) and are presented in U.S. Dollars (USD).


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   Management's Discussion and Analysis of Financial Condition and Results of
                             Operations (continued)
                  (In millions, except as otherwise disclosed)

Overview

We are a global biotechnology company that develops and commercializes
innovative therapies for people with serious
and life-threatening rare diseases and medical conditions. We select product
candidates for diseases and conditions that represent
a significant unmet medical need, have well-understood biology and provide an
opportunity to be first-to-market or offer a
significant benefit over existing products.

Our portfolio consists of eight commercial therapies and multiple clinical and preclinical product candidates. A summary of our commercial products, as of September 30, 2022, is provided below:



Commercial Products                                  Indication
Products marketed by BioMarin:
VIMIZIM (elosulfase alpha)                      MPS IVA (1)
NAGLAZYME (galsulfase)                          MPS VI (2)
PALYNZIQ (pegvaliase-pqpz)                      PKU (3)
KUVAN (sapropterin dihydrochloride)             PKU (4)
BRINEURA (cerliponase alfa)                     CLN2 (5)
VOXZOGO (vosoritide)                            Achondroplasia (6)

ROCTAVIAN (valoctocogene roxaparvovec) (7) Severe Hemophilia A Products not marketed by BioMarin: ALDURAZYME (laronidase)

                         MPS I (8)


(1)For the treatment of Mucopolysaccharidosis IV Type A

(2)For the treatment of Mucopolysaccharidosis VI

(3)For adult patients with PKU

(4)For the treatment of phenylketonuria

(5)For the treatment of late infantile neuronal ceroid lipofuscinosis type 2



(6)For the treatment of achondroplasia in children aged five years and older for
the United States (U.S.), aged two years and older for the European Union (EU)
and for various age ranges for other markets

(7)ROCTAVIAN (formerly known as valoctocogene roxaparvovec) for the treatment of adults with severe hemophilia A was conditionally approved by the European Commission (EC) in August 2022

(8)For the treatment of Mucopolysaccharidosis I




A summary of our on-going clinical development programs, as of September 30,
2022, is provided below:

                                            Target
Clinical Development Programs             Indication                              Stage
ROCTAVIAN (1)                       Severe Hemophilia A                      Clinical Phase 3

BMN 255                             Primary Hyperoxaluria                   Clinical Phase 1/2
BMN 331                             Hereditary Angioedema                   Clinical Phase 1/2

(1)In August 2022, the EC granted marketing approval for ROCTAVIAN in the EU; In October 2022, the U.S. Food and Drug Administration (FDA) accepted our resubmission of the Biologics License Application (BLA) for review


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Management's Discussion and Analysis of Financial Condition and Results of


                             Operations (continued)
                  (In millions, except as otherwise disclosed)

Financial Highlights

Key components of our results of operations include the following:



                                                        Three Months Ended                      Nine Months Ended
                                                           September 30,                          September 30,
                                                       2022                2021              2022               2021
Total revenues                                   $    505.3             $ 408.7          $ 1,558.5          $ 1,396.5
Cost of sales                                    $    116.3             $ 103.5          $   356.4          $   350.8
Research and development (R&D) expense           $    157.8             $ 157.9          $   476.9          $   467.7
Selling, general and administrative (SG&A)
expense                                          $    216.8             $ 

183.3 $ 608.3 $ 541.8



Gain on sale of nonfinancial assets, net         $        -             $   

- $ (108.0) $ -



Provision for (benefit from) income taxes        $      4.7             $  (9.7)         $    25.3          $    (2.6)
Net income (loss)                                $     (6.7)            $ (36.5)         $   141.8          $    (6.2)

See "Results of Operations" below for discussion of our results for the periods presented.

Uncertainty Relating to the COVID-19 Pandemic



The COVID-19 pandemic continues to affect economies and business around the
world. Our global revenue sources, mostly in the form of demand interruptions
such as missed patient infusions and delayed treatment starts for new patients,
and our overall business operations were impacted by COVID-19 during the nine
months ended September 30, 2022 and 2021, and we anticipate a continued impact
on our financial results in 2022. The extent and duration of such effects remain
uncertain and difficult to predict, particularly as virus variants continue to
spread. We are actively monitoring and managing our response and assessing
actual and potential impacts to our operating results and financial condition,
as well as developments in our business, which could further impact the
developments, trends and expectations described below. See the risk factor
related to the impact of the coronavirus pandemic, "The COVID-19 pandemic could
continue to materially adversely affect our business, results of operations and
financial condition." described in "Risk Factors" in Part II, Item 1A of this
Quarterly Report, for additional details on the impact of the COVID-19 pandemic.

Business Developments



We continued to grow our commercial business and advance our product candidate
pipeline during 2022. We believe that the combination of our internal research
programs, acquisitions and partnerships will allow us to continue to develop and
commercialize innovative therapies for people with serious and life-threatening
rare diseases and medical conditions. Below is a summary of key business
developments:

Continued Emphasis on Research and Development

New Product Launches, Approvals and Mid-stage Product Life Cycle Expansion Opportunities



•VOXZOGO: The global expansion of VOXZOGO is actively underway, with market
access and reimbursement activities progressing as anticipated. As of September
30, 2022, we have seen worldwide increases in the number of children being
treated with commercial VOXZOGO and in the number of active markets contributing
to VOXZOGO sales.

During the third quarter, Voxzogo became commercially available in Japan resulting in meaningful contributions from the early launch.



During the third quarter, we held discussions with global regulatory health
authorities regarding the favorable results from the Phase 2 randomized,
double-blind, placebo-controlled VOXZOGO study in infants and young children up
to five years of age with achondroplasia. Based on these interactions, we intend
to submit supplemental marketing applications in the U.S. and EU by the end of
2022 to expand access to VOXZOGO treatment for this younger age group.

•ROCTAVIAN: Following EMA approval in the third quarter of 2022, the commercial
launch of ROCTAVIAN is now underway. To determine eligibility for ROCTAVIAN,
treating physicians in countries covered by the EMA approval can use a companion
diagnostic (CDx) test to ensure that patients do not have pre-existing
antibodies to AAV5. The CDx test is CE-marked and designed to ensure the highest
safety standards for use in determining patient eligibility for treatment with
ROCTAVIAN.
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Management's Discussion and Analysis of Financial Condition and Results of


                             Operations (continued)
                  (In millions, except as otherwise disclosed)

On October 12, 2022, the FDA accepted our resubmission of the BLA for ROCTAVIAN
with a current Prescription Drug User Fee Act (PDUFA) target action date of
March 31, 2023. However, we anticipate three additional months of review may be
necessary based on the number of data read-outs that will emerge during the
procedure. The FDA recently communicated plans to hold an advisory committee
meeting, but has yet to provide a date. If approved, ROCTAVIAN would be the
first gene therapy in the U.S. for the treatment of severe hemophilia A.

At present, in the U.S. the Premarket Approval (PMA) application is under review
at the Center for Devices and Radiological Health to support contemporaneous
approval of a CDx test along with the ROCTAVIAN BLA.

Product expansion opportunities with ROCTAVIAN are supported by a number of
clinical studies currently underway. The Phase 3b study to evaluate ROCTAVIAN
with prophylactic corticosteroids has completed enrollment and is expected to
read-out in early 2023. There are two additional studies: one investigating
ROCTAVIAN treatment in those with active or prior inhibitors, as well as one
study investigating ROCTAVIAN in people with pre-existing antibodies against
AAV5.

Select Earlier-stage Development Portfolio



?BMN 255 for primary hyperoxaluria type 1, a subset of chronic renal disease: We
are proceeding with the multi-ascending dose phase of the First-in-Human study
with BMN 255. We believe the availability of a potent, orally bioavailable,
small molecule like BMN 255 may be able to significantly reduce disease and
treatment burden in certain people with chronic renal disease.

?BMN 331 gene therapy product candidate for Hereditary Angioedema (HAE): Dosing
continues in the Phase 1/2 HAERMONY study to evaluate BMN 331, an
investigational AAV5-mediated gene therapy for people living with HAE, including
dose escalation to the 6e13vg/kg dose, which our non-clinical studies project to
provide therapeutic levels of C1-inhibitor.

Reorganization Plan



On October 6, 2022, we announced our decision to redesign and simplify the
organization to better focus investments that advance our Research and
Development pipeline, maximize recent commercial launch success, prepare for a
potential launch of ROCTAVIAN in the U.S., and drive core infrastructure
optimization. As a result, there will be a reduction in force of approximately
120 employees (representing approximately 4% of our global workforce), most of
whom are from our U.S. operations. We expect to incur pre-tax severance and
employee termination benefit charges of approximately $20.0 million to
$25.0 million, of which $4.8 million was recorded in the third quarter of 2022
with the remainder expected to be recorded in the fourth quarter of 2022.

Critical Accounting Estimates



In preparing our Condensed Consolidated Financial Statements in accordance with
U.S. GAAP and pursuant to the rules and regulations promulgated by the
Securities and Exchange Commission (the SEC), we make assumptions, judgments and
estimates that can have a significant impact on our net income/loss and affect
the reported amounts of certain assets, liabilities, revenues and expenses, and
related disclosures. On an ongoing basis, we evaluate our estimates and discuss
our critical accounting estimates with the Audit Committee of our Board of
Directors. We base our estimates on historical experience and various other
assumptions that we believe to be reasonable under the circumstances. Actual
results could differ materially from these estimates under different assumptions
or conditions. Historically, our assumptions, judgments and estimates relative
to our critical accounting estimates have not differed materially from actual
results.

The full extent to which the ongoing COVID-19 pandemic could continue to
directly or indirectly impact our business, results of operations and financial
condition, including revenues, expenses, reserves and allowances, manufacturing,
clinical trials and research and development costs will depend on future
developments that continue to remain highly uncertain at this time, particularly
as virus variants continue to spread. As events continue to evolve and
additional information becomes available, our estimates may change materially in
future periods.

There have been no significant changes to our critical accounting estimates during the nine months ended September 30, 2022, compared to those disclosed in "Management's Discussion and Analysis of Financial Condition and Results of Operations" included in our Annual Report on Form 10-K for the year ended December 31, 2021, filed with the Securities and Exchange Commission on February 25, 2022.

Recent Accounting Pronouncements



See Note 1 to our accompanying Condensed Consolidated Financial Statements for a
description of recent accounting pronouncements, if any, and our expectation of
their impact on our results of operations and financial condition.
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Management's Discussion and Analysis of Financial Condition and Results of


                             Operations (continued)
          (In millions of U.S. dollars, except as otherwise disclosed)

Results of Operations

Net Product Revenues

Net Product Revenues consisted of the following:



                                               Three Months Ended                                   Nine Months Ended
                                                  September 30,                                       September 30,
                                      2022             2021           Change             2022               2021             Change
Net product revenues by product:
VIMIZIM                            $ 155.5          $ 136.9          $ 18.6          $   511.7          $   466.8          $  44.9
NAGLAZYME                             99.5             71.2            28.3              343.3              297.3             46.0
PALYNZIQ                              66.2             60.7             5.5              182.7              173.7              9.0
KUVAN                                 57.0             67.7           (10.7)             174.0              217.3            (43.3)
VOXZOGO                               48.3              0.1            48.2              102.3                0.1            102.2
BRINEURA                              37.8             32.9             4.9              111.7               90.6             21.1

Total net product revenues
marketed by BioMarin               $ 464.3          $ 369.5          $ 94.8          $ 1,425.7          $ 1,245.8          $ 179.9
ALDURAZYME net product revenues
marketed by Sanofi                    29.0             24.4             4.6               90.8              102.5            (11.7)
Total net product revenues         $ 493.3          $ 393.9          $ 99.4          $ 1,516.5          $ 1,348.3          $ 168.2


Net Product Revenues include revenues generated from our approved products. In
the U.S., our commercial products, except for PALYNZIQ and ALDURAZYME, are
generally sold to specialty pharmacies or end-users, such as hospitals, which
act as retailers. PALYNZIQ is distributed in the U.S. through certain certified
specialty pharmacies under the PALYNZIQ Risk Evaluation and Mitigation Strategy
(REMS) program, and ALDURAZYME is marketed worldwide by Sanofi. Outside the
U.S., our commercial products are sold to authorized distributors or directly to
government purchasers or hospitals, which act as the end-users.

The increase in Net Product Revenues for the three months ended September 30, 2022 as compared to the three months ended September 30, 2021 was primarily attributed to the following:

•VOXZOGO: ramp up of commercial sales due to new patients initiating therapy globally following regulatory approvals in late 2021 and 2022; and



•VIMIZIM and NAGLAZYME: higher product sales primarily attributed to the timing
of orders in countries that place large government orders, particularly in
Europe and Latin America and new patients initiating therapy in Europe and the
Middle East; partially offset by

•KUVAN: lower sales primarily attributed to increasing generic competition as a
result of the loss of exclusivity in the U.S. that occurred in October 2020. We
anticipated and prepared for this loss of exclusivity and the reduction in our
market share, as well as the adverse effect on our revenues and results of
operations. We expect to continue to experience adverse effects on our market
share and revenues in the future due to the loss of exclusivity in the U.S.,
patent challenges in the EU, and the contracting sapropterin dihydrochloride
market.

The increase in Net Product Revenues for the nine months ended September 30, 2022 as compared to the nine months ended September 30, 2021 was primarily attributed to the following:

•VOXZOGO: ramp up of commercial sales due to new patients initiating therapy globally;



•VIMIZIM and NAGLAZYME: higher product sales primarily attributed to timing of
orders in countries that place large government orders, particularly in Latin
America, the Middle East and Europe and new patients initiating therapy; and

•BRINEURA: higher sales primarily due to new patients initiating therapy in Europe and U.S.; partially offset by

•KUVAN: lower sales primarily attributed to increasing generic competition as a result of the loss of exclusivity in the U.S. that occurred in October 2020.



In certain countries, governments place large periodic orders for our products.
We expect that the timing of these large government orders will continue to be
inconsistent, which may create significant period to period variation in our
revenues. We anticipate the COVID-19 pandemic will have a continued impact on
the remainder of 2022 Net Product Revenues as many of our
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Management's Discussion and Analysis of Financial Condition and Results of


                             Operations (continued)
          (In millions of U.S. dollars, except as otherwise disclosed)

products are administered via infusions in a clinic or hospital setting and/or
by a healthcare professional. Although we continue to work with our patient
community and health care providers to find alternative arrangements where
necessary, such as providing infusions at home, the revenue from the doses of
our products that are missed by patients and the lost revenue from delayed
treatment starts for new patients will never be recouped.

See the risk factors "The sale of generic versions of KUVAN by generic
manufacturers has adversely affected and will continue to adversely affect our
revenues and may cause a decline in KUVAN revenues faster than expected" and
"The COVID-19 pandemic could continue to materially adversely affect our
business, results of operations and financial condition" in "Risk Factors"
included in Part II, Item 1A of this Quarterly Report for additional information
on risks we face.

We face exposure to movements in foreign currency exchange rates, primarily the
Euro. We use foreign currency exchange forward contracts to hedge a percentage
of our foreign currency exposure. The following table shows our Net Product
Revenues denominated in USD and foreign currencies:

                                                Three Months Ended                                   Nine Months Ended
                                                   September 30,                                       September 30,
                                       2022             2021           Change             2022               2021             Change
Sales denominated in USD            $ 239.2          $ 220.5          $ 18.7          $   739.8          $   732.5          $   7.3
Sales denominated in foreign
currencies                            254.1            173.4            80.7              776.7              615.8            160.9
Total net product revenues          $ 493.3          $ 393.9          $ 99.4          $ 1,516.5          $ 1,348.3          $ 168.2


                                                  Three Months Ended                                 Nine Months Ended
                                                     September 30,                                     September 30,
                                         2022            2021            Change            2022            2021            Change
Favorable (unfavorable) impact of
foreign currency exchange rates on
product sales denominated in
currencies other than USD             $ (18.1)         $ (0.7)         $ (17.4)         $ (40.6)         $  1.8          $ (42.4)


The unfavorable impact for the three and nine months ended September 30, 2022 as
compared to the three and nine months ended September 30, 2021 was primarily
driven by weakness relative to the USD associated with the Euro, currencies from
certain Latin American markets, Japanese Yen and Turkish Lira.

Royalty and Other Revenues



Royalty and Other Revenues include royalties earned on net sales of products
sold by third parties, up-front licensing fees, milestones achieved by licensees
or sublicensees and rental income associated with the tenants in our facilities.

                                     Three Months Ended                  Nine Months Ended
                                       September 30,                       September 30,
                                2022        2021       Change       2022        2021       Change
Royalty and other revenues    $ 12.0      $ 14.9      $ (2.9)     $ 42.0      $ 48.2      $ (6.2)


The decrease in Royalty and Other Revenues for the three and nine months ended
September 30, 2022 as compared to the three and nine months ended September 30,
2021 was primarily due to lower license revenues earned from third parties.

We expect to continue to earn royalties from third parties in the future.

Cost of Sales and Gross Margin

Cost of Sales includes raw materials, personnel and facility and other costs associated with manufacturing our commercial products. These costs include production materials, production costs at our manufacturing facilities, third-party manufacturing


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Management's Discussion and Analysis of Financial Condition and Results of


                             Operations (continued)
          (In millions of U.S. dollars, except as otherwise disclosed)

costs, and internal and external final formulation and packaging costs. Cost of
Sales also includes royalties payable to third parties based on sales of our
products and charges for inventory valuation reserves.

The following table summarizes our Cost of Sales and gross margin:



                           Three Months Ended                          Nine Months Ended
                              September 30,                              September 30,
                     2022          2021        Change          2022            2021          Change
Total revenues    $ 505.3       $ 408.7       $ 96.6       $ 1,558.5       $ 1,396.5       $ 162.0
Cost of sales     $ 116.3       $ 103.5       $ 12.8       $   356.4       $   350.8       $   5.6
Gross margin         77.0  %       74.7  %       2.3  %         77.1  %         74.9  %        2.2  %


Cost of Sales increased for the three and nine months ended September 30, 2022
as compared to the three and nine months ended September 30, 2021 primarily due
to increased sales volumes. Gross margin increased for the three and nine months
ended September 30, 2022 as compared to the three and nine months ended
September 30, 2021 primarily due to lower per unit manufacturing costs, lower
inventory reserves, and higher sales volume of products with higher margins.

We expect gross margin to range between approximately 75.5% and 77.5% through 2022.



Research and Development

R&D expense includes costs associated with the research and development of product candidates and post-marketing research commitments related to our approved products. R&D expense primarily includes preclinical and clinical studies, personnel and raw materials costs associated with manufacturing clinical product, quality control and assurance, other R&D activities, facilities and regulatory costs.



We manage our R&D expense by identifying the R&D activities we anticipate will
be performed during a given period and then prioritizing efforts based on
scientific data, probability of successful development, market potential,
available human and capital resources and other similar considerations. We
continually review our product pipeline and the development status of product
candidates and, as necessary, reallocate resources among the research and
development portfolio that we believe will best support the future growth of our
business.

R&D expense consisted of the following:



                                         Three Months Ended                    Nine Months Ended
                                           September 30,                         September 30,
                                   2022         2021        Change       2022         2021        Change
Research and early development   $  62.6      $  61.7      $  0.9      $ 188.3      $ 158.0      $ 30.3
ROCTAVIAN                           29.0         29.1        (0.1)        90.7         84.0         6.7
Other approved products             29.4         25.8         3.6         86.4         80.5         5.9
VOXZOGO                             22.5         26.1        (3.6)        76.9         99.0       (22.1)
BMN 331                              8.4          9.1        (0.7)        21.9         28.3        (6.4)

BMN 255                              2.3          2.9        (0.6)         6.8          7.1        (0.3)
Other                                3.6          3.2         0.4          5.9         10.8        (4.9)
Total R&D expense                $ 157.8      $ 157.9      $ (0.1)     $ 476.9      $ 467.7      $  9.2

R&D expense for the three months ended September 30, 2022 as compared to the three months ended September 30, 2021 was flat.

The increase in R&D expense for the nine months ended September 30, 2022 as compared to the nine months ended September 30, 2021 was primarily due to the following:

•higher spend in research and early development programs due to increased pre-clinical activities and IND-enabling studies for planned IND filings; partially offset by



•a decrease in VOXZOGO related expenses due to capitalization of manufacturing
costs and lower costs related to regulatory activities following the regulatory
approvals in the third and fourth quarters of 2021.
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Management's Discussion and Analysis of Financial Condition and Results of


                             Operations (continued)
          (In millions of U.S. dollars, except as otherwise disclosed)

We expect R&D expense to increase in future periods, primarily due to increased
activities for our research and early development programs while we continue to
develop our later stage programs.

Selling, General and Administrative



Sales and marketing (S&M) expense primarily consisted of employee-related
expenses for our sales group, brand marketing, patient support groups and
pre-commercialization expenses related to our product candidates. General and
administrative (G&A) expense primarily consisted of corporate support and other
administrative expenses, including employee-related expenses.

SG&A expenses consisted of the following:



                             Three Months Ended                    Nine Months Ended
                               September 30,                         September 30,
                       2022         2021        Change       2022         2021        Change
S&M expense          $ 111.3      $  97.0      $ 14.3      $ 325.7      $ 292.0      $ 33.7
G&A expense            105.5         86.3        19.2        282.6        249.8        32.8
Total SG&A expense   $ 216.8      $ 183.3      $ 33.5      $ 608.3      $ 541.8      $ 66.5

S&M expenses by product were as follows:



                                                Three Months Ended                                Nine Months Ended
                                                  September 30,                                     September 30,
                                       2022            2021           Change            2022             2021           Change

PKU Products (KUVAN and PALYNZIQ) $ 30.8 $ 29.9 $ 0.9

$ 91.5 $ 91.9 $ (0.4) VOXZOGO

                                26.5            18.5             8.0             72.5             52.9            19.6
MPS Products (ALDURAZYME, NAGLAZYME
and VIMIZIM)                           23.6            23.9            (0.3)            75.0             76.0            (1.0)
ROCTAVIAN                              18.4            13.1             5.3             52.6             37.6            15.0
BRINEURA                                7.9             8.9            (1.0)            23.0             26.1            (3.1)
Other                                   4.1             2.7             1.4             11.1              7.5             3.6
Total S&M expense                   $ 111.3          $ 97.0          $ 14.3          $ 325.7          $ 292.0          $ 33.7


The increase in S&M expense for the three and nine months ended September 30,
2022 as compared to the three and nine months ended September 30, 2021 was
primarily a result of increased activities in support of the VOXZOGO commercial
launch following EU and U.S. regulatory approvals in the latter half of 2021 and
an increase in ROCTAVIAN commercial launch preparation activities.

The increase in G&A expense for the three and nine months ended September 30,
2022 as compared to the three and nine months ended September 30, 2021 was
primarily due to increased severance, employee termination benefits and external
costs related to our reorganization plan, the impact from the revaluation of
non-USD denominated assets and liabilities and legal expenses, partially offset
by lower idle plant time related to maintaining our gene therapy manufacturing
facility.

We expect SG&A expense to increase in future periods as a result of preparing to launch new products and support of our global business as it grows.


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Management's Discussion and Analysis of Financial Condition and Results of


                             Operations (continued)
          (In millions of U.S. dollars, except as otherwise disclosed)

Intangible Asset Amortization and Contingent Consideration and Gain on Sale of Nonfinancial Assets, Net



Changes during the periods presented for Intangible Asset Amortization and
Contingent Consideration and Gain on Sale of Nonfinancial Assets, Net were as
follows:

                                                 Three Months Ended                                Nine Months Ended
                                                    September 30,                                    September 30,
                                        2022            2021           Change            2022            2021            Change
Changes in the fair value of
contingent consideration              $  0.9          $  1.8          $ 

(0.9) $ 3.8 $ 6.3 $ (2.5) Amortization of intangible assets 15.9

            15.4             0.5             47.1            46.3              0.8

Total intangible asset amortization and contingent consideration $ 16.8 $ 17.2 $ (0.4) $ 50.9 $ 52.6 $ (1.7)



Gain on sale of nonfinancial assets,
net                                   $    -          $    -          $    

- $ 108.0 $ - $ 108.0




Fair value of contingent consideration - the decrease in the fair value of
contingent consideration for the three and nine months ended September 30, 2022
as compared to September 30, 2021 was attributable to the attainment of a €30
million milestone in the first quarter of 2022.

Amortization of intangible assets - the expense for the three and nine months ended September 30, 2022 as compared to the three and nine months ended September 30, 2021 was relatively flat.



Gain on Sale of Nonfinancial Assets, Net - the increase in the nine months ended
September 30, 2022 as compared to the nine months ended September 30, 2021 was
due to the sale in the first quarter of 2022 of the Priority Review Voucher
(PRV) that we received in connection with the FDA approval of VOXZOGO in 2021.
In exchange for the PRV, we received lump sum payment of $110.0 million, which
was recognized as a gain on the sale of intangible assets, net of broker fees.

Interest Income



We invest our cash equivalents and investments in U.S. government securities and
other high credit quality debt securities in order to limit default and market
risk.

                          Three Months Ended                    Nine Months Ended
                             September 30,                        September 30,
                      2022         2021       Change       2022        2021       Change
Interest income   $   5.0         $ 1.8      $  3.2      $   9.3      $ 8.7      $  0.6


The increase in Interest Income for the three months ended September 30, 2022
compared to the three months ended September 30, 2021 was primarily due to
higher interest rates and total portfolio returns. Interest Income for the nine
months ended September 30, 2022 as compared to the nine months ended
September 30, 2021 was relatively flat. We expect Interest Income to increase
over the next 12 months due to anticipated higher interest rates and yields on
our cash equivalents and investments.

Interest Expense

We incur interest expense primarily on our convertible debt. Interest Expense for the periods presented was as follows:



                             Three Months Ended                    Nine Months Ended
                                September 30,                        September 30,
                         2022         2021       Change       2022        2021       Change
Interest expense     $   4.7         $ 3.9      $  0.8      $ 12.3      $ 11.5      $  0.8


Interest Expense for the three and nine months ended September 30, 2022 as
compared to the three and nine months ended September 30, 2021 was relatively
flat. We do not expect Interest Expense to fluctuate significantly over the next
12 months as the rates on our convertible debt are fixed. See Note 6 to our
accompanying Condensed Consolidated Financial Statements for additional
information regarding our debt.
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Management's Discussion and Analysis of Financial Condition and Results of


                             Operations (continued)
          (In millions of U.S. dollars, except as otherwise disclosed)

Other Income (Expense), Net

Other Income (Expense), Net for the periods presented was as follows:



                                     Three Months Ended                   Nine Months Ended
                                       September 30,                        September 30,
                                2022        2021       Change       2022        2021       Change
Other income (expense), net   $   0.2      $ 9.1      $ (8.9)     $ (3.9)

$ 10.4 $ (14.3)




The decrease in Other Income (Expense), Net for the three and nine months ended
September 30, 2022 compared to the three and nine months ended September 30,
2021 was primarily due to the absence of insurance proceeds received in the
third quarter of 2021 that were in excess of direct costs incurred. The decrease
for the nine months ended September 30, 2022 compared to the nine months ended
September 30, 2021 was also attributed to the loss on the fair value of assets
held in our nonqualified deferred compensation plan.

Provision for (Benefit from) Income Taxes

The following table summarizes our Provision for Income Taxes:



                                                    Three Months Ended                  Nine Months Ended
                                                      September 30,                       September 30,
                                               2022        2021       Change       2022        2021       Change
Provision for (benefit from) income taxes    $  4.7      $ (9.7)     $ 14.4

$ 25.3 $ (2.6) $ 27.9





The increase in the income tax provision for the three and nine months ended
September 30, 2022 as compared to the three and nine months ended September 30,
2021 was primarily due to taxes on higher income recognized and projected for
2022, which includes income recognized in the first quarter of 2022 from the
sale of the PRV.

Financial Condition, Liquidity and Capital Resources

Our cash, cash equivalents, and investments as of September 30, 2022 and December 31, 2021 were as follows:



                                                  September 30,
                                                      2022               December 31, 2021            Change
Cash and cash equivalents                        $      761.5          $            587.3          $   174.2
Short-term investments                                  512.3                       426.6               85.7
Long-term investments                                   372.3                       507.8             (135.5)
Cash, cash equivalents and investments           $    1,646.1          $    

1,521.7 $ 124.4




We believe our cash generated from sales of our commercial products, in addition
to our cash, cash equivalents and investments will be sufficient to satisfy our
liquidity requirements for at least the next 12 months. We believe we will meet
longer-term expected future cash requirements and obligations through a
combination of cash flows from operating activities, available cash and
investments balances and available revolving loan balances. We will need to
raise additional funds from equity or debt securities, loans or collaborative
agreements if we are unable to satisfy our liquidity requirements. For example,
we may require additional financing to fund the repayment of our convertible
debt, future milestone payments and our future operations, including the
commercialization of our products and product candidates currently under
development, preclinical studies and clinical trials, and potential licenses and
acquisitions. The timing and mix of our funding alternatives could change
depending on many factors, including how much we elect to spend on our
development programs, potential licenses and acquisitions of complementary
technologies, products and companies or if we settle our convertible debt in
cash. Our ability to raise additional capital may also be adversely impacted by
potential worsening global economic conditions and the recent disruptions to,
and volatility in, financial markets in the U.S. and worldwide resulting from
the ongoing COVID-19 pandemic.

We are mindful that conditions in the current macroeconomic environment, such as
inflation, supply chain disruptions and impacts of the ongoing COVID-19
pandemic, could affect our ability to achieve our goals. In addition, we sell
our products in certain countries that face economic volatility and weakness.
Although we have historically collected receivables from customers in such
countries, sustained weakness or further deterioration of the local economies
and currencies may cause customers in those
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Management's Discussion and Analysis of Financial Condition and Results of


                             Operations (continued)
          (In millions of U.S. dollars, except as otherwise disclosed)

countries to be unable to pay for our products. We will continue to monitor these conditions and will attempt to adjust our business processes, as appropriate, to mitigate macroeconomic risks to our business.

Our cash flows are summarized as follows:



                                                               Nine Months Ended September 30,
                                                          2022                2021              Change

Net cash provided by operating activities            $     169.1          $   293.4          $  (124.3)
Net cash provided by (used in) investing activities  $      34.7          $  (310.9)         $   345.6
Net cash used in financing activities                $     (29.5)         $ 

(14.4) $ (15.1)




The decrease in net cash provided by operating activities in the nine months
ended September 30, 2022 compared to September 30, 2021 was primarily attributed
to the timing of cash receipts from our customers and the absence of a tax
refund received in 2021.

The increase in net cash provided by investing activities in the nine months ended September 30, 2022 compared to September 30, 2021 was primarily attributable to lower net purchases of investments and the $110.0 million proceeds from the sale of PRV in the first quarter of 2022.



The increase in net cash used in financing activities in the nine months ended
September 30, 2022 compared to September 30, 2021 was primarily attributed to
the payment in 2022 to a third party related to our achievement of a PKU sales
milestone.

Financing and Credit Facilities



Our $1.1 billion (undiscounted) of total convertible debt as of September 30,
2022 will impact our liquidity due to the semi-annual cash interest payments as
well as the repayment of the principal amount, if not converted. As of
September 30, 2022, our indebtedness consisted of our 0.599% senior subordinated
convertible notes due in 2024 and our 1.25% senior subordinated convertible
notes due in 2027, which, if not converted, will be required to be repaid in
cash at maturity in August 2024 and May 2027, respectively. For additional
information related to our convertible debt see, Note 6 to our accompanying
Condensed Consolidated Financial Statements and Note 10 - Debt to the
Consolidated Financial Statements accompanying our Annual Report on Form 10-K
for the year ended December 31, 2021.

In October 2018, we entered into an unsecured revolving credit facility of up to
$200.0 million which includes a letter of credit subfacility and a swingline
loan subfacility. The credit facility is intended to finance ongoing working
capital needs and for other general corporate purposes. In May 2021, we amended
the credit facility agreement, extending the maturity date from October 19, 2021
to May 28, 2024, among other changes. The amended credit facility contains
financial covenants including a
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Management's Discussion and Analysis of Financial Condition and Results of


                             Operations (continued)
          (In millions of U.S. dollars, except as otherwise disclosed)

maximum leverage ratio and a minimum interest coverage ratio. As of September 30, 2022, there were no amounts outstanding under the credit facility and we and certain of our subsidiaries that serve as guarantors were in compliance with all covenants.

Material Cash Requirements

Funding Commitments



Our investment in our research and early development of product candidates and
continued development of our existing commercial products has a major impact on
our operating performance. R&D expenses for our commercial products and certain
product candidates for the period since inception as of September 30, 2022 were
as follows:


                            Since Program Inception
ROCTAVIAN                  $                  915.8
VOXZOGO                    $                  776.9

BMN 331                    $                  101.9
BMN 255                    $                   32.7
Other approved products    $                2,459.6


We cannot estimate with certainty the cost to complete any of our product
development programs. We may need or elect to increase our spending above our
current long-term plans to be able to achieve our long-term goals. This may
increase our capital requirements, including: costs associated with the
commercialization of our products? additional clinical trials; investments in
the manufacturing of our commercial products? preclinical studies and clinical
trials for our product candidates? potential licenses and other acquisitions of
complementary technologies, products and companies? and general corporate
purposes. Additionally, we cannot precisely estimate the time to complete any of
our product development programs or when we expect to receive net cash inflows
from any of our product development programs. Please see "Risk Factors" included
in Part II, Item 1A of this Quarterly Report on Form 10-Q, for a discussion of
the reasons we are unable to estimate such information.

Purchase Obligations



As of September 30, 2022, we had obligations of approximately $171.5 million,
which primarily related to firm purchase commitments entered into in the normal
course of business to procure active pharmaceutical ingredients, certain
inventory-related items, certain third-party R&D services, production services
and facility construction services. Of this amount, $99.7 million is expected to
be paid in 2023.

Contingent Consideration

As of September 30, 2022, we had $28.3 million of acquisition-related contingent
consideration on our Condensed Consolidated Balance Sheet, all of which was Euro
denominated and short term. Of this amount, we expect to pay the USD equivalent
of €15 million in cash in the fourth quarter of 2022 to Merck Serono related to
our achievement of a PKU sales milestone in the third quarter of 2022. For
additional information related to our obligation to Merck Serono related to a
2016 arrangement, see Note 17 to the Consolidated Financial Statements
accompanying our Annual Report on Form 10-K for the year ended December 31,
2021.

Other Obligations

As of September 30, 2022, we expect to pay severance and employee termination benefits of approximately $20.0 million to $25.0 million during the fourth quarter of 2022 related to our reorganization plan announced on October 6, 2022.

Our lease, contingent obligations and unrecognized tax benefits as of September 30, 2022 have not materially changed from those discussed in "Financial Condition, Liquidity and Capital Resources" in Part II, Item 7 of our Annual Report on Form 10-K for the year ended December 31, 2021.


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