DUBLIN?and?NEW YORK,?Dec. 23, 2019?/PRNewswire/ --?Theravance Biopharma Ireland Limited, a subsidiary of?Theravance Biopharma, Inc.?(NASDAQ: TBPH) ("Theravance Biopharma") and?Pfizer Inc.?(NYSE: PFE) ("Pfizer") today announced that the companies have entered into a global license agreement for?Theravance Biopharma's?preclinical program for skin-targeted, locally-acting pan-Janus kinase (JAK) inhibitors that can be rapidly metabolized. The compounds in this program target validated pro-inflammatory pathways and are specifically designed to possess skin-selective activity with minimal systemic exposure. Under the terms of the agreement,?Theravance Biopharma?will receive an upfront cash payment of?$10 million?and will be eligible to receive up to an additional?$240 million?in development and sales milestone payments from Pfizer. In addition,?Theravance Biopharma?will be eligible to receive royalties on worldwide net sales of any potential products emerging from the program. "We believe that this global agreement with Pfizer provides further validation of our unique expertise in the discovery and development of innovative, organ-selective JAK inhibitors. As a clear global leader in the field of JAK inhibition, Pfizer is ideally positioned to advance this program and unlock its therapeutic potential," said Rick E Winningham, chief executive officer of Theravance Biopharma. "Theravance Biopharma's?skin-targeted JAK inhibitor program will nicely complement Pfizer's portfolio of preclinical and clinical-stage molecules, which have unique selectivity profiles and are matched to conditions in which we believe they have the greatest potential to address unmet need," said?Michael Vincent, chief scientific officer, Inflammation & Immunology, Pfizer. "Topical JAK inhibitors that can be rapidly metabolized have potential to reach more patients with mild-to-moderate skin conditions, for whom treatment is currently limited." About Organ-Selective Pan-Janus (JAK) Kinase Inhibition JAK inhibitors function by inhibiting the activity of one or more of the Janus kinase family of enzymes (JAK1, JAK2, JAK3, TYK2) that play a key role in cytokine signaling. Inhibiting these JAK enzymes interferes with the JAK/STAT signaling pathway and, in turn, modulates the activity of a wide range of pro-inflammatory cytokines. JAK inhibitors are currently approved for the treatment of a range of inflammatory diseases including rheumatoid arthritis, psoriatic arthritis, myelofibrosis, and ulcerative colitis. About?Theravance Biopharma Theravance Biopharma, Inc.?("Theravance Biopharma") is a diversified biopharmaceutical company primarily focused on the discovery, development and commercialization of organ-selective medicines. Our purpose is to create transformational medicines to improve the lives of patients suffering from serious illnesses. Our research is focused in the areas of inflammation and immunology. In pursuit of our purpose, we apply insights and innovation at each stage of our business and utilize our internal capabilities and those of partners around the world. We apply organ-selective expertise to biologically compelling targets to discover and develop medicines designed to treat underserved localized diseases and to limit systemic exposure, in order to maximize patient benefit and minimize risk. These efforts leverage years of experience in developing lung-selective medicines to treat respiratory disease, including?FDA-approved YUPELRI^??(revefenacin) inhalation solution indicated for the maintenance treatment of patients with chronic obstructive pulmonary disease (COPD). Our pipeline of internally discovered programs is targeted to address significant patient needs. We have an economic interest in potential future payments from?Glaxo Group Limited?or one of its affiliates (GSK) pursuant to its agreements with?Innoviva, Inc.?relating to certain programs, including TRELEGY ELLIPTA. For more information, please visit?www.theravance.com. THERAVANCE^??and the Cross/Star logo are registered trademarks of the?Theravance Biopharma?group of companies. YUPELRI^??is a?United States?registered trademark of?Mylan Specialty L.P.?Trademarks, trade names or service marks of other companies appearing on this press release are the property of their respective owners. This press release contains "forward-looking" statements as that term is defined in the Private Securities Litigation Reform Act of 1995 regarding, among other things, statements relating to goals, plans, objectives, expectations and future events.?Theravance Biopharmaintends such forward-looking statements to be covered by the safe harbor provisions for forward-looking statements contained in Section 21E of the Securities Exchange Act of 1934 and the Private Securities Litigation Reform Act of 1995. Examples of such statements include statements relating to: the Company's strategies, plans and objectives, the Company's regulatory strategies and timing of clinical studies (including the data therefrom), the potential characteristics, benefits and mechanisms of action of the Company's product and product candidates, the potential that the Company's research programs will progress product candidates into the clinic, the Company's expectations for product candidates through development, potential regulatory approval and commercialization (including their differentiation from other products or potential products), product sales or profit share revenue and the Company's expectations for its 2019 operating loss, excluding share-based compensation. These statements are based on the current estimates and assumptions of the management of?Theravance Biopharma?as of the date of the press release and are subject to risks, uncertainties, changes in circumstances, assumptions and other factors that may cause the actual results of?Theravance Biopharma?to be materially different from those reflected in the forward-looking statements. Important factors that could cause actual results to differ materially from those indicated by such forward-looking statements include, among others, risks related to: potential future disagreements with?Innoviva, Inc.?and?TRC LLC, the uncertainty of arbitration and litigation and the possibility that an arbitration award or litigation result could be adverse to the Company, delays or difficulties in commencing, enrolling or completing clinical studies, the potential that results from clinical or non-clinical studies indicate the Company's compounds or product candidates are?unsafe or ineffective, risks that product candidates do not obtain approval from regulatory authorities, the feasibility of undertaking future clinical trials for our product candidates based on policies and feedback from regulatory authorities, dependence on third parties to conduct clinical studies, delays or failure to achieve and maintain regulatory approvals for product candidates, risks of collaborating with or relying on third parties to discover, develop, manufacture and commercialize products, and risks associated with establishing and maintaining sales, marketing and distribution capabilities with appropriate technical expertise and supporting infrastructure. Other risks affecting?Theravance Biopharma?are described under the heading "Risk Factors" contained in?Theravance Biopharma's?Form 10-Q filed with the?Securities and Exchange Commission?(SEC) on?November 8, 2019?and?Theravance Biopharma's?other filings with the?SEC.?In addition to the risks described above and in?Theravance Biopharma's?filings with the?SEC, other unknown or unpredictable factors also could affect?Theravance Biopharma's?results. No forward-looking statements can be guaranteed and actual results may differ materially from such statements.?Given these uncertainties, you should not place undue reliance on these forward-looking statements.?Theravance Biopharma?assumes no obligation to update its forward-looking statements?on account of new information, future events or otherwise, except as required by law. Pfizer Inc.: Breakthroughs that Change Patients' Lives At Pfizer, we apply science and our global resources to bring therapies to people that extend and significantly improve their lives. We strive to set the standard for quality, safety and value in the discovery, development and manufacture of health care products, including innovative medicines and vaccines. Every day, Pfizer colleagues work across developed and emerging markets to advance wellness, prevention, treatments and cures that challenge the most feared diseases of our time. Consistent with our responsibility as one of the world's premier innovative biopharmaceutical companies, we collaborate with health care providers, governments and local communities to support and expand access to reliable, affordable health care around the world. For more than 150 years, we have worked to make a difference for all who rely on us. We routinely post information that may be important to investors on our website at?www.pfizer.com.?In addition, to learn more, please visit us on?www.pfizer.com?and follow us on Twitter at?@Pfizer?and?@Pfizer_News,?LinkedIn,?YouTube?and like us on?Facebook?at?Facebook.com/Pfizer. PFIZER DISCLOSURE NOTICE:?The information contained in this release is as of?December 23, 2019. Pfizer assumes no obligation to update forward-looking statements contained in this release as the result of new information or future events or developments. This release contains forward-looking information about a global license agreement between Pfizer and?Theravance Biopharma, and?Theravance Biopharma's?program for skin-targeted, locally-acting pan-Janus kinase (JAK) inhibitors that can be rapidly metabolized, including its potential benefits, that involves substantial risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statements. Risks and uncertainties include, among other things, the uncertainties inherent in research and development, including the ability to meet anticipated clinical endpoints, commencement and/or completion dates for our clinical trials, regulatory submission dates, regulatory approval dates and/or launch dates, as well as the possibility of unfavorable new clinical data and further analyses of existing clinical data; the risk that clinical trial data are subject to differing interpretations and assessments by regulatory authorities; whether regulatory authorities will be satisfied with the design of and results from our clinical studies; whether and when drug applications may be filed in any jurisdictions for any of the product candidates with?Theravance Biopharma's?JAK inhibitors; whether and when any such applications may be approved by regulatory authorities, which will depend on myriad factors, including making a determination as to whether the product's benefits outweigh its known risks and determination of the product's efficacy and, if approved, whether any of the product candidates with?Theravance Biopharma's?JAK inhibitors will be commercially successful; decisions by regulatory authorities impacting labeling, manufacturing processes, safety and/or other matters that could affect the availability or commercial potential of any of the product candidates with?Theravance Biopharma's?JAK inhibitors; and competitive developments. A further description of risks and uncertainties can be found in Pfizer's Annual Report on Form 10-K for the fiscal year ended?December 31, 2018?and in its subsequent reports on Form 10-Q, including in the sections thereof captioned "Risk Factors" and "Forward-Looking Information and Factors That May Affect Future Results", as well as in its subsequent reports on Form 8-K, all of which are filed with the?U.S. Securities and Exchange Commission?and available at?www.sec.gov?and?www.pfizer.com. Contact Information: Theravance Biopharma Jessica Stitt 650-808-4045 investor.relations@theravance.com Vida Strategic Partners?(Theravance Biopharma?media) Tim Brons 646-319-8981 tbrons@vidasp.com Pfizer Media Relations: Patricia Kelly 212-733-3810 patricia.kelly@pfizer.com Pfizer Investor Relations: Chuck Triano 212-733-3901 charles.e.triano@pfizer.com

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