Industry Leader Tim Walbert Joins Mirum Pharmaceuticals’ Board of Directors

Mirum Pharmaceuticals, Inc. (Nasdaq: MIRM) today announced that Tim Walbert has been appointed to the company’s Board of Directors. In addition to Mr. Walbert’s appointment, the company shared that Niall O’Donnell, Ph.D., a Mirum director since November 2018, has announced his plan to step down from the Board of Directors concurrent with the upcoming 2023 Annual Meeting of Stockholders expected to be held on June 12, 2023.

Tim Walbert joins Mirum’s board following a 15-year tenure as president, chief executive officer, and chairman of the board of Horizon Therapeutics, which he built from inception to a leading rare disease company. Horizon recently announced its intent to be acquired by Amgen. Before joining Horizon, he served as president, chief executive officer and a director of IDM Pharma Inc., a public biotechnology company which was acquired by Takeda America Holdings Inc. in June 2009. Before IDM Pharma, Mr. Walbert served as executive vice president, commercial operations at NeoPharm Inc., a public biotechnology company. From 2001 to 2005, he served as divisional vice president and general manager, immunology, at Abbott, now AbbVie, leading the global development and launch of the multi-indication biologic HUMIRA, and served as divisional vice president, global cardiovascular strategy. From 1998 to 2001, Mr. Walbert served as director, CELEBREX North America, and arthritis team leader, Asia Pacific, Latin America and Canada, at G.D. Searle & Company. From 1991 to 1998, he also held sales and marketing roles with increasing responsibility at G.D. Searle, Merck & Co. Inc. and Wyeth.

Mr. Walbert currently serves on the board of Century Therapeutics, a public biotech company. He is also a member of the National Organization for Rare Disorders (NORD) Advisory Board, the Wall Street Journal CEO Council and serves on the Board of Trustees of Muhlenberg College. He previously served on the board of directors for Aurinia Pharmaceuticals, a public pharmaceutical company, from 2020 to 2022, Exicure, a public biotechnology company, from 2019 to 2022, Assertio, a public biopharma company, from 2014 to 2020, Raptor Pharmaceutical Corp., a public biotechnology company, from 2010 to 2014; XOMA Corporation, a public biotechnology company, from 2011 to 2017 and Sucampo Pharmaceuticals Inc., a public biopharmaceutical company, from 2015 to 2018. He is also a member of Economic Club of Chicago, the Commercial Club of Chicago and the Civic Committee of the Commercial Club of Chicago. Mr. Walbert was a previous board member of the Biotechnology Innovation Organization (BIO), the Pharmaceutical Research and Manufacturing Association (PhRMA), the Illinois Biotechnology Innovation Organization (iBIO) and World Business Chicago. Mr. Walbert received a Bachelor of Arts in business from Muhlenberg College.