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Gilead Sciences Expands Liver Portfolio With Acquisition of CymaBay Therapeutics

— Gilead Adds Seladelpar to Portfolio, a PPARδ Agonist for the Treatment of Primary Biliary Cholangitis (PBC) with FDA Priority Review and Anticipated U.S. Approval in Third Quarter of 2024 —

— Seladelpar Phase 3 Data Demonstrates a Best-in-Disease Profile for Second-Line PBC —

— Acquisition Expands Gilead’s Long-Standing Commitment to Patients with Liver Diseases —

FOSTER CITY, Calif. & NEWARK, Calif.–(BUSINESS WIRE)–
Gilead Sciences, Inc. (Nasdaq: GILD) and CymaBay Therapeutics, Inc. (Nasdaq: CBAY) announced today a definitive agreement under which Gilead will acquire CymaBay for $32.50 per share in cash or a total equity value of $4.3 billion. The addition of CymaBay’s investigational lead product candidate, seladelpar for the treatment of primary biliary cholangitis (PBC) including pruritus, complements Gilead’s existing liver portfolio and aligns with its long-standing commitment to bringing transformational medicines to patients.

“We are looking forward to advancing seladelpar by leveraging Gilead’s long-standing expertise in treating and curing liver diseases,” said Daniel O’Day, Chairman and Chief Executive Officer, Gilead Sciences. “Building on the strong research and development work by the CymaBay team to date, we have the potential to address a significant unmet need for people living with PBC and expand on our existing broad range of transformational therapies.”

PBC is a rare, chronic, cholestatic liver disease mainly affecting women (1 in 1,000 women over the age of 40 or about 130,000 total people in the U.S.) that impairs liver function and quality of life. The most common early symptoms of PBC are pruritus (itching) and fatigue, which can be debilitating for some patients. Progression of PBC is associated with an increased risk of liver-related mortality.

Seladelpar is an investigational, oral, selective peroxisome proliferator-activated receptor delta (PPARδ) agonist, shown to regulate critical metabolic and liver disease pathways. The United States Food and Drug Administration (FDA) has completed its filing review and accepted a New Drug Application for seladelpar and granted priority review with a Prescription Drug User Fee Act target action date of August 14, 2024.

Seladelpar received FDA Breakthrough Therapy Designation for use in the treatment of PBC including pruritus in patients without cirrhosis or with compensated cirrhosis and PRIME status (EMA), as well as Orphan Drug Designation in the U.S. and Europe for the treatment of patients with PBC.

In the pivotal Phase 3 RESPONSE trial, seladelpar achieved statistical significance over placebo across primary composite endpoints of biochemical response (61.7% for patients on seladelpar vs 20.0% for placebo), normalization of alkaline phosphatase at 12 months (25.0% for patients on seladelpar vs 0.0% for placebo) and statistically significant improvement in pruritus at six months among people living with moderate-to-severe itch that was sustained through 12 months.

“Today’s agreement with Gilead is the culmination of years of focus and determination at CymaBay to advance seladelpar and bring new hope to people living with PBC and their families,” said Sujal Shah, President, and CEO at CymaBay Therapeutics. “Now that seladelpar has achieved priority review with the FDA, we are excited that Gilead, with its long-standing commitment to patients with liver disease, can apply its regulatory and commercial expertise to bring seladelpar as quickly as possible to people with PBC.”

Terms of the Transaction

The transaction was approved by both the Gilead and CymaBay Boards of Directors and is anticipated to close during the first quarter of 2024, subject to regulatory approvals and other customary closing conditions.

Under the terms of the merger agreement entered into in connection with the transaction, a wholly-owned subsidiary of Gilead will promptly commence a tender offer to acquire all of the outstanding shares of CymaBay’s common stock at a price of $32.50 per share in cash, which offer price represents a 27 percent premium to CymaBay’s closing share price on February 9, 2024. Following successful completion of the tender offer, Gilead will acquire all remaining shares not tendered in the offer through a second step merger at the same price as in the tender offer. Upon FDA approval of seladelpar, the proposed transaction is expected to enhance Gilead’s revenue growth, and it is also expected that the transaction will be approximately neutral to earnings per share in 2025 and significantly accretive thereafter.

Consummation of the tender offer is subject to a minimum tender of at least a majority of then-outstanding CymaBay shares, the expiration or termination of the waiting period under the Hart-Scott-Rodino Antitrust Improvements Act and other customary conditions.

BofA Securities, Inc. and Guggenheim Securities, LLC are acting as financial advisors to Gilead. Centerview Partners LLC and Lazard are acting as financial advisors to CymaBay.

About Seladelpar

Seladelpar, an investigational treatment for people with PBC, is an oral, selective peroxisomeproliferator-activated receptor delta (PPARδ) agonist shown to regulate critical metabolic and liver disease pathways in indications with high unmet medical need. Preclinical and clinical data support its ability to regulate genes involved in bile acid synthesis, inflammation, fibrosis and lipid metabolism, storage, and transport.

About CymaBay Therapeutics

CymaBay Therapeutics, Inc. is a clinical-stage biopharmaceutical company focused on improving the lives of people with liver and other chronic diseases that have high unmet medical need. Our deep understanding of the underlying mechanisms of liver inflammation and fibrosis, and the unique targets that play a role in their progression, have helped us receive breakthrough therapy designation (FDA), PRIME status (EMA), and orphan drug status (U.S. and Europe) for seladelpar, a first-in-class investigational treatment for people with PBC. A new drug application for seladelpar was submitted to the FDA in December 2023. Our evidence-based decision-making and commitment to the highest quality standards reflect our relentless dedication to the people, families, and communities we serve. To learn more, visit www.cymabay.com and follow us on X (formerly Twitter) and LinkedIn.

About Gilead Sciences

Gilead Sciences, Inc. is a biopharmaceutical company that has pursued and achieved breakthroughs in medicine for more than three decades, with the goal of creating a healthier world for all people. The company is committed to advancing innovative medicines to prevent and treat life-threatening diseases, including HIV, viral hepatitis, COVID-19, and cancer. Gilead operates in more than 35 countries worldwide, with headquarters in Foster City, Calif.

Forward-Looking Statements

This communication contains forward-looking statements related to Gilead, CymaBay and the acquisition of CymaBay by Gilead that are subject to risks, uncertainties and other factors. All statements other than statements of historical fact are statements that could be deemed forward-looking statements, including all statements regarding the intent, belief or current expectation of Gilead and CymaBay and members of their respective senior management teams. Forward-looking statements include, without limitation, statements regarding the transaction and related matters, prospective performance and opportunities, post-closing operations and the outlook for the companies’ businesses, including, without limitation, the ability of Gilead to advance CymaBay’s product pipeline and successfully commercialize seladelpar; the possibility of unfavorable results from clinical trials; regulatory applications and related timelines; filings and approvals relating to the transaction; the expected timing of the completion of the transaction; the ability to complete the transaction considering the various closing conditions; difficulties or unanticipated expenses in connection with integrating the companies; and any assumptions underlying any of the foregoing. Investors are cautioned that any such forward-looking statements are not guarantees of future performance and involve risks and uncertainties and are cautioned not to place undue reliance on these forward-looking statements. Actual results may differ materially from those currently anticipated due to a number of risks and uncertainties. Risks and uncertainties that could cause the actual results to differ from expectations contemplated by forward-looking statements include: uncertainties as to the timing of the tender offer and merger; uncertainties as to how many of CymaBay’s stockholders will tender their stock in the offer; the possibility that competing offers will be made; the possibility that various closing conditions for the transaction may not be satisfied or waived, including that a governmental entity may prohibit, delay or refuse to grant approval for the consummation of the transaction; the effects of the transaction on relationships with employees, other business partners or governmental entities; the difficulty of predicting the timing or outcome of regulatory approvals or actions, if any; the impact of competitive products and pricing; other business effects, including the effects of industry, economic or political conditions outside of the companies’ control; transaction costs; actual or contingent liabilities; adverse impacts on business, operating results or financial condition in the future due to pandemics, epidemics or outbreaks; and other risks and uncertainties detailed from time to time in the companies’ periodic reports filed with the U.S. Securities and Exchange Commission (the “SEC”), including current reports on Form 8-K, quarterly reports on Form 10-Q and annual reports on Form 10-K, as well as the Schedule 14D-9 to be filed by CymaBay and the Schedule TO and related tender offer documents to be filed by Gilead and Pacific Merger Sub, Inc., a wholly owned subsidiary of Gilead. All forward-looking statements are based on information currently available to Gilead and CymaBay, and Gilead and CymaBay assume no obligation and disclaim any intent to update any such forward-looking statements.

ADDITIONAL INFORMATION AND WHERE TO FIND IT

The tender offer described in this document has not yet commenced. This communication is for informational purposes only and is neither an offer to purchase nor a solicitation of an offer to sell securities of CymaBay, nor is it a substitute for any tender offer materials that Gilead, Pacific Merger Sub, Inc. or CymaBay will file with the SEC. A solicitation and an offer to buy securities of CymaBay will be made only pursuant to an offer to purchase and related materials that Gilead intends to file with the SEC. At the time the tender offer is commenced, Gilead will file a Tender Offer Statement on Schedule TO with the SEC, and CymaBay will file a Solicitation/Recommendation Statement on Schedule 14D-9 with the SEC with respect to the tender offer. CYMABAY’S STOCKHOLDERS AND OTHER INVESTORS ARE URGED TO READ THE TENDER OFFER MATERIALS (INCLUDING AN OFFER TO PURCHASE, A RELATED LETTER OF TRANSMITTAL AND CERTAIN OTHER TENDER OFFER DOCUMENTS) AND THE SOLICITATION/RECOMMENDATION STATEMENT ON SCHEDULE 14D-9 BECAUSE THEY WILL CONTAIN IMPORTANT INFORMATION THAT SHOULD BE READ CAREFULLY BEFORE ANY DECISION IS MADE WITH RESPECT TO THE TENDER OFFER. The Offer to Purchase, the related letter of transmittal and certain other tender offer documents, as well as the Solicitation/Recommendation Statement on Schedule 14D-9, will be sent to all stockholders of CymaBay at no expense to them. The Tender Offer Statement on Schedule TO, the Solicitation/Recommendation Statement on Schedule 14D-9 and other related documents will be made available for free at the SEC’s web site at www.sec.gov. Additional copies may be obtained for free by contacting Gilead or CymaBay. Free copies of these materials and certain other offering documents will be made available by Gilead by mail to Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, CA 94404, attention: Investor Relations, by phone at 1-800-GILEAD-5 or 1-650-574-3000, or by directing requests for such materials to the information agent for the offer, which will be named in the Tender Offer Statement on Schedule TO. Investors and security holders of CymaBay may also obtain, free of charge, the Solicitation/Recommendation Statement on Schedule 14D-9 and other related documents that the Company has filed with or furnished to the SEC under the “Investors & Media” section of CymaBay’s website at https://www.cymabay.com/investors-media.

In addition to the Offer to Purchase, the related Letter of Transmittal and certain other tender offer documents, as well as the Solicitation/Recommendation Statement, Gilead and CymaBay file annual, quarterly and current reports, proxy statements and other information with the SEC. Gilead’s and CymaBay’s filings with the SEC are also available for free to the public from commercial document-retrieval services and at the website maintained by the SEC at www.sec.gov.

Gilead and the Gilead logo are trademarks of Gilead Sciences, Inc., or its related companies. The CymaBay name and logo are trademarks of CymaBay.

For more information about Gilead, please visit the company’s website at

www.gilead.com

, follow Gilead on X/Twitter (@Gilead Sciences) and LinkedIN (@Gilead-Sciences).

Source: Gilead Sciences, Inc.

Source: www.gilead.com

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Robert Wilson

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