Role Description The Medical Science Liaison (MSL) is a field-based scientific professional within Medical Affairs, responsible for building relationships with key opinion leaders (HCPs) and medical institutions. They provide fair and balanced scientific information, support medical education, and deliver clinical and educational engagement to healthcare professionals, support clinical studies, investigator-initiated research, and strategic initiatives. Work Model: Remote - Officially documented as working full-time from home, with travel to Ultragenyx's offices or other locations on occasion as needed. Responsibilities: - Identify Key Opinion Leaders (KOLs) and establish and maintain scientific relationships with KOLs; connecting to KOLs in academic and community centers, using the science behind our products to support treatment for patients with rare and ultra-rare diseases. - Act as primary liaison to investigators interested in developing and performing investigator-initiated research. - Develop and execute territory plans in alignment with country-level plans. - Provide clinical presentations and medical information in response to unsolicited questions (as appropriate) in academic, community, healthcare provider settings, and other stakeholders, including payers. - Provide medical information and updates through scientific exchange and disseminate scientific publications and scientific support for appropriate educational initiatives. - Collaborate with the Clinical Operations organization to enhance patient enrolment in company-sponsored clinical trials by identifying appropriate clinical trial sites and interacting with investigators in ongoing studies. - Provide scientific support at medical congresses. - Work in alignment with the department and company Brand Plan, contributing in a cross-functional manner. - Provide timely medical insights/information on emerging clinical/scientific teams and opportunities to internal stakeholders. - Be compliant with Ultragenyx Code of Conduct, policies, and procedures, and ensure all activities are compliant with company policies and SOPs. Qualifications - Advanced degree in clinical specialty (MD, PhD, PharmD) and 2+ years of MSL experience strongly preferred. - Rare disease experience preferred, particularly in metabolic genetic diseases. - Excellent teamwork and communication skills required. - Demonstrated experience in effectively presenting clinical/scientific information required. - Expert understanding of the local health care delivery system and its impact on patient care and regional medical care. - Models our Core Values: #Dynamic, #Possibility, #Generous, #Relentless, #Courageous and exemplifies the culture we want to create; operates with transparency; is trusted. - Ability to relate and work with a wide range of people to achieve results. - Ability to organize and prioritize own work schedule. - Ability to make decisions that have a significant impact on the department’s credibility, operations, and services. - Ability to create materials such as reports and presentations for inside and outside the organization, and present/speak to groups. - Time and territory management skills required. - Approximately 50-60% travel is required; overnight travel is required as needed. - Fluency in English. Benefits - Generous vacation time and public holidays observed by the company. - Volunteer days. - Long term incentive and Employee stock purchase plans or equivalent offerings. - Employee wellbeing benefits. - Fitness reimbursement. - Tuition sponsoring. - Professional development plans. - Benefits vary by region and country.

• Draft and negotiate varying complex author contracts (including global joint acquisitions agreements, working up to profit sharing agreements) • Support Macmillan Audio agreements, understanding publisher-specific needs • Advise Editors, Publishers, Finance, and other colleagues on deal terms and agency boilerplate • Contract terminations • Entering and maintaining contract data in Biblio • Special projects, as needed

• Lead the evolution of acquired businesses by bridging the gap between acquisition and operational success • Manage the transition of franchises to the Honor Care Platform • Serve as the primary point of contact for stakeholders, ensuring adherence to project plans • Lead and coach a high-performing team of Specialists and Associates • Proactively stay abreast of market-specific regulations • Partner with the Territory and/or General Manager to stabilize day-to-day operations

• Own day-to-day relationship management for an assigned portfolio of MLB and MiLB clubs, driving engagement and participation through proactive outreach and consistent follow-through. • Own outreach and activation plans across assigned geographic territories, partnering with internal stakeholders to increase local host participation and improve retention. • Serve as a key liaison between Pitch, Hit & Run and the broader baseball and softball community, representing the program with professionalism and sound judgment. • Execute partnership activation with organizations that operate Pitch, Hit & Run competitions, ensuring partners have what they need to drive participation and deliver a strong experience. • Enable community-based and Little League organizations by translating program requirements into clear guidance, tools, and repeatable practices. • Support key account and national organization relationships (for example: GameChanger, Babe Ruth Baseball, and Little League) by owning assigned deliverables, follow-ups, and coordination, in alignment with the team’s shared ownership model. • Own the operational plan for local host events and Team Championships, including schedules, timelines, documentation, and cross-functional coordination. • Lead Team Championships communications planning and coordination in partnership with coordinators, ensuring messaging is accurate, timely, and consistent for parents and athletes. • Serve as an on-site operations lead for key events as needed, anticipating issues and driving resolution to ensure successful delivery. • Serve as the day-to-day owner of the LeagueApps partnership operations, including intake, data flows, issue triage, and coordination with internal and external partners. • Lead end-to-end data operations for participation, registration, event, and results data (including host sheets and participant sheets), partnering with coordinators and external stakeholders to ensure accuracy and timeliness. • Serve as the point person for data-related communication, issue resolution, and system updates, escalating risk and recurring issues with clear recommendations. • Maintain the accuracy and functionality of registration systems, reporting platforms, and event data through regular audits and continuous improvement. • Lead results tracking and finalization, ensuring validation steps are followed and stakeholders have what they need to confirm completeness. • Build and maintain reporting tools, dashboards, and tracking systems; package insights and recommendations for leadership to support decision-making. • Identify trends, root causes, and opportunities to improve program execution and partner experience; propose process changes within the role’s scope. • Collaborate cross-functionally with Events, Marketing, and PHR Coordinators to align communications, data, and execution, including marketing recognition and congratulations campaigns tied to championships. • Represent the program at conventions and partnership events as needed (for example: ABCA, Boys & Girls Club events, and MLB partnership events).