Investors: Media: Traci McCarty Debra Charlesworth BioMarin Pharmaceutical Inc. BioMarin Pharmaceutical Inc. (415) 455-7558 (415) 455-7451 BioMarin Announces Second Quarter 2019 Financial Results - Total Revenue

BioMarin Announces Second Quarter 2019 Financial Results

- Total Revenues of $387.8 million in the Quarter

- Full-year 2019 Total BioMarin Revenue Guidance of Between $1.68 billion to $1.75 billion Reaffirmed

- As of June 30, 2019, 551 U.S. Commercial Patients Receiving Treatment with Palynziq

Financial Highlights (in millions of U.S. dollars, except per share data, unaudited)

SAN RAFAEL, Calif., August 1, 2019 - BioMarin Pharmaceutical Inc. (NASDAQ: BMRN) (BioMarin or the Company) today announced financial results for the second quarter ended June 30, 2019.

Total Net Product Revenues for the second of quarter 2019 increased to $379.1 million, compared to $367.8 million for the second quarter of 2018. The increase in Net Product Revenues was attributed to the following:

received approval from the U.S. Food and Drug Administration (FDA) in May 2018 and from the European Medicines Agency (EMA) in May 2019. EU commercial sales are expected to commence in the third quarter of 2019; and

The increase in GAAP Net Loss for the second quarter of 2019, compared to the same period in 2018 was primarily due to the following:

The increase in GAAP Net Loss for the second quarter of 2019 did not affect the Company's full-year GAAP Net Loss Guidance, which remains unchanged.

Non-GAAP Income for the second quarter of 2019 decreased $2.8 million, or 14%, to $17.1 million, compared to $19.9 million for the same period in 2018. The decrease in Non-GAAP Income for the quarter, compared to the same period in 2018, was attributed to higher R&D expense and SG&A expense, partially offset by increased gross profit from sales as described above. The decrease in Non-GAAP Income for the second quarter of 2019 did not affect the Company's full-year Non-GAAP Income Guidance, which remains unchanged.

As of June 30, 2019, BioMarin had cash, cash equivalents and investments totaling approximately $1.1 billion, as compared to $1.3 billion on December 31, 2018.

Commenting on second quarter results, Jean-Jacques Bienaim , Chairman and Chief Executive Officer of BioMarin, said, "During the first half of 2019 we laid the foundation for a number of significant milestones anticipated over the coming months. We recently announced our plans to submit marketing applications for valoctocogene roxaparvovec gene therapy for severe hemophilia A in both the United States and Europe. We expect to submit both applications in the fourth quarter of this year based on recent interactions with health authorities in those regions. We are pleased

to have the opportunity to initiate the first review of a marketing application for any type of hemophilia indication with a gene therapy product. With valoctocogene roxaparvovec people with severe hemophilia A may soon have the opportunity to experience improved quality of life, including consequences of bleeding, physical functioning, role functioning, emotional impact, treatment concern, and worry. We are very grateful that health authorities are aligned in their focus to expedite the review of this potentially transformative treatment option given the unmet need with current standard of care."

Mr. Bienaim continued, "Phase 3 results from another potential commercial product, vosoritide for the treatment of achondroplasia, are expected to read-out at the end of this year. Our newest study, a global Phase 2 with vosoritide in infants and young children (less than 60 months old) with achondroplasia is enrolling very well. We expect all subjects ages 6 months through 5 years to be enrolled by year-end. We have been very pleased with the high-level of enthusiasm from families wanting to participate in this program and look forward to starting enrollment in the youngest cohort, infants up to 6 months old, later this year. Another very significant opportunity that is gaining momentum is the global commercialization of Palynziq. We have been very pleased with the pace of the U.S. launch, as we ended the second quarter with 551 patients on reimbursed Palynziq, and an additional 158 naive patients having completed enrollment and awaiting their first injection. Building on this success and as part of our strategy to increase our leadership in the PKU market, we anticipate the submission of an investigational new drug application (IND) and/or a clinical trial application (CTA) for BMN 307, our gene therapy product for PKU, in the second half of 2019. BMN 307 demonstrated lifetime normalization of Phe in a validated PKU mouse model, and as a result, we believe it has the potential to be an important new treatment and market expander as part of our PKU franchise."

2019 Full-Year Financial Guidance unchanged (in millions, except %)

* All Financial Guidance items are calculated based on U.S. GAAP with the exception of Non-GAAP Income/Loss. Refer to Non-GAAP Information beginning on page 9 of this press release for a complete discussion of the Company's Non-GAAP financial information and reconciliations to the corresponding GAAP reported information.

Key Program Highlights

These submissions will be based on the updated three-year Phase 1/2 data and the recently completed Phase 3 interim analysis of patients treated with valoctocogene roxaparvovec material from the to-be-commercialized process. Both submissions are expected to represent the first time a gene therapy product for any type of hemophilia indication will be reviewed for marketing authorization by health authorities.

The Company has chosen to cease development of the 4e13 vg/kg dose of valoctocogene roxaparvovec given the overwhelming preference by patients to be treated with the 6e13 vg/kg dose. Enrollment continues in the GENEr8-1 Phase 3 study and the 52 week results are anticipated at the end of 2020.

On May 6, 2019, the European Commission (EC) granted marketing authorization for Palynziq at doses of up to 60 milligrams once daily, to reduce blood Phe concentrations in patients with PKU aged 16 and older, who have inadequate blood Phe control (blood Phe levels greater than 600 micromol/L) despite prior management with available treatment options. In addition, the EC acknowledged that the Phase 3 trial and extension study is suggestive of an improvement in inattention and mood symptoms.

The Company expects top line results from the ongoing global, Phase 3 study by year-end 2019. The vosoritide development program includes four distinct areas of focus to support global approval, including a large contemporaneous natural history study which is underway. The global Phase 3 study, which is fully enrolled, is a randomized, placebo-controlled study of vosoritide in approximately 110 children with achondroplasia between the ages of 5 to 14 years.

In 2018, BioMarin began a global Phase 2 study with vosoritide in infants and young children (newborn to 60 months old) with achondroplasia, to determine the impact of treatment in this age group. Three cohorts, segmented by age, are being enrolled in this study. Cohort 1 includes children ages 24 to 60 months old and has completed enrollment. Cohort 2 includes children ages 6 to 24 months old and is expected to complete enrollment by year-end. The Company plans to begin enrolling infants up to 6 months old by year-end.

BioMarin will host a conference call and webcast to discuss second quarter 2019 financial results today, Thursday, August 1, 2019 at 4:30 p.m. ET. This event can be accessed on the investor section of the BioMarin website at www.biomarin.com.

BioMarin is a global biotechnology company that develops and commercializes innovative therapies for people with serious and life-threatening rare diseases and medical conditions. The Company selects 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. The Company's portfolio consists of several commercial therapies and multiple clinical and preclinical product candidates.

For additional information, please visit www.biomarin.com.

Forward-Looking Statements

This press release and the associated conference call and webcast contain forward-looking statements about the business prospects of BioMarin Pharmaceutical Inc. (BioMarin), including, without limitation, statements about: the expectations of Total Revenues, including Aldurazyme revenues expected to be recognized in the third quarter of 2019 once product shipped in the second quarter has been accepted by Sanofi Genzyme (Genzyme) and full year Aldurazyme revenues, Net Product Revenues and expenses for BioMarin's commercial products, Cost of Sales, GAAP Net Loss, Non-GAAP Income and other specified income statement guidance, including guidance for Total Revenues for the full-year; the financial performance of BioMarin as a whole; BioMarin's potential for growth: BioMarin anticipating significant milestones over the coming months; the timing of BioMarin's clinical development and commercial prospects, including (i) BioMarin's planned submissions to regulatory authorities, including marketing authorization applications for valoctocogene roxaparvovec in both the U.S. and Europe and an IND and/or a CTA for BMN 307, (ii) BioMarin's clinical studies and trials, (iii) completion of enrollment of those studies and trials, including enrollment in BioMarin's Phase 3 program with valoctocogene roxaparvovec and global Phase 2 study with vosoritide, and (iv) announcements of data from those studies and trials, including BioMarin's Phase 3 program and Phase 1/2 study with valoctocogene roxaparvovec and global Phase 3 study of vosoritide; the clinical development and commercialization of BioMarin's product candidates and commercial products, including (i) valoctocogene roxaparvovec offering people with severe hemophilia A the opportunity to experience improved quality of life, (ii) BioMarin's planned submission of marketing authorization applications for valoctocogene roxaparvovec representing the first time a gene therapy product for any type of hemophilia will be reviewed for marketing authorization by health authorities, (iii) product to support clinical evaluation of BMN 307 being produced using a commercial scale manufacturing process to facilitate rapid clinical development and (iv) the possible approval and commercialization of BioMarin's product candidates, including vosoritide for the treatment of achondroplasia.

These forward-looking statements are predictions and involve risks and uncertainties such that actual results may differ materially from these statements. These risks and uncertainties include, among others: BioMarin's success in the commercialization of its commercial products; Genzyme success in continuing the commercialization of Aldurazyme; results and timing of current and planned preclinical studies and clinical trials, BioMarin's ability to successfully manufacture its commercial products and product candidates; the content and timing of decisions by the FDA, the European Commission and other regulatory authorities concerning each of the described products and product candidates; the market for each of these products; actual sales of BioMarin's commercial products; the introduction of generic versions of BioMarin's commercial products, in particular generic versions of Kuvan; and those factors detailed in BioMarin's filings with the Securities and Exchange Commission (SEC), including, without limitation, the factors contained under the caption "Risk Factors" in BioMarin's Quarterly Report on Form 10-Q for the quarter ended March 31, 2019 as such factors may be updated by any subsequent reports. Stockholders are urged not to place undue reliance on forward-looking statements, which speak only as of the date hereof. BioMarin is under no obligation, and expressly disclaims any obligation to update or alter any forward-looking statement, whether as a result of new information, future events or otherwise.

BioMarin , Brineura , Firdapse , Kuvan , Naglazyme , Palynziq and Vimizim are registered trademarks of BioMarin Pharmaceutical Inc., or its affiliates. Aldurazyme is a registered trademark of BioMarin/Genzyme LLC.

BIOMARIN PHARMACEUTICAL INC.

CONDENSED CONSOLIDATED BALANCE SHEETS

June 30, 2019 and December 31, 2018

(In thousands of U.S. dollars, except share and per share amounts)

BIOMARIN PHARMACEUTICAL INC.

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS

Three and Six Months Ended June 30, 2019 and 2018

(In thousands of U.S. dollars, except per share amounts)

The following table presents Net Product Revenues by Product:

Net Product Revenues by Product

(In millions of U.S. dollars)

The following table presents Net Product Revenues for the PKU Franchise by Product:

Net Product Revenues by Product for the PKU Franchise

(In millions of U.S. dollars)

The following table presents Genzyme's Aldurazyme Revenues:

Aldurazyme Revenues Provided by Genzyme to BioMarin

(In millions of U.S. dollars)

Non-GAAP Information

The results presented in this press release include both GAAP information and Non-GAAP information. As used in this release, Non-GAAP Income is defined by the Company as GAAP Net Loss excluding net interest expense, provision for (benefit from) income taxes, depreciation expense, amortization expense, stock-based compensation expense, contingent consideration expense and, in certain periods, certain other specified items, as detailed below when applicable. In addition, BioMarin includes in this press release the effects of these adjustments on certain components of GAAP Net Loss for each of the periods presented. In this regard, Non-GAAP Income and its components, including Non-GAAP Cost of Sales, Non-GAAP Research and Development expenses, Non-GAAP Selling, General and Administrative expense, Non-GAAP Intangible Asset Amortization and Contingent Consideration, Non-GAAP Gain on the Sale of Intangible Asset and Non-GAAP Benefit From Income Taxes are statement of operations line items prepared on the same basis as, and therefore components of, the overall Non-GAAP measures.

BioMarin regularly uses both GAAP and Non-GAAP results and expectations internally to assess its financial operating performance and evaluate key business decisions related to its principal business activities: the discovery, development, manufacture, marketing and sale of innovative biologic therapies. Because Non-GAAP Income and its components are important internal measurements for BioMarin, the Company believes that providing this information in conjunction with BioMarin's GAAP information enhances investors' and analysts' ability to meaningfully compare the Company's results from period to period and to its forward looking guidance, and to identify operating trends in the Company's principal business. BioMarin also uses Non-GAAP Income internally to understand, manage and evaluate its business and to make operating decisions, and compensation of executives is based in part on this measure.

Non-GAAP Income and its components are not meant to be considered in isolation, as a substitute for, or superior to comparable GAAP measures and should be read in conjunction with the consolidated financial information prepared in accordance with GAAP. Investors should note that the Non-GAAP information is not prepared under any comprehensive set of accounting rules or principles and does not reflect all of the amounts associated with the Company's results of operations as determined in accordance with GAAP. Investors should also note that these Non-GAAP measures have no standardized meaning prescribed by GAAP and, therefore, have limits in their usefulness to investors. In addition, from time to time in the future there may be other items that the Company may exclude for purposes of its Non-GAAP measures; likewise, the Company may in the future cease to exclude items that it has historically excluded for purposes of its Non-GAAP measures. Because of the non-standardized definitions, the Non-GAAP measure as used by BioMarin in this press release and the accompanying tables may be calculated differently from, and therefore may not be directly comparable to, similarly titled measures used by other companies.

The following table presents the reconciliation of GAAP Net Loss to Non-GAAP Income:

Reconciliation of GAAP Net Loss to Non-GAAP Income

(In millions of U.S. dollars)

The following reconciliation of the GAAP reported to the Non-GAAP information provides the details of the effects of the Non-GAAP adjustments on certain components of the Company's operating results for each of the periods presented.

Reconciliation of Certain GAAP Reported Information to Non-GAAP Information

(In millions of U.S. dollars)