Ultragenyx Pharmaceutical Inc. (NASDAQ:RARE) Q4 2021 Earnings Conference Call February 10, 2022 5:00 PM ET Company Participants Joshua Higa - Senior Director of Investor Relations Emil Kakkis - President, Chief Executive Officer & Director Erik Harris - Executive Vice President & Chief Commercial Officer Mardi Dier - Executive Vice President & Chief Financial Officer Camille Bedrosian - Chief Medical Officer & Executive Vice President Conference Call Participants Yigal Nochomovitz - Citigroup Gena Wang - Ba ...