The Board of Directors of Alder BioPharmaceuticals, Inc. appointed Jeremy Green to serve as a Class III director of the company until the company’s 2020 Annual Meeting of Stockholders and until his successor has been duly elected and qualified, or until his earlier death, resignation or removal. Mr. Green has also been appointed to serve as a member of the Board’s Nominating and Corporate Governance Committee. Jeremy Green is the Founder and Portfolio Manager of Redmile Group, LLC.