How Many People Work at Avidity Biosciences? Headcount and Employee Trends

Avidity Biosciences is a clinical-stage biotechnology company focused on engineered oligonucleotide therapeutics. Its global workforce stands at roughly 350 employees, supported by 117 recent hires that signal steady expansion. Attrition remains modest at around three percent, suggesting stable employee retention even as the organization scales research, development, and operational capabilities.

Engineering is the largest function with just over 100 employees—close to one-third of total headcount—underscoring the technical intensity of drug discovery and development. Business-facing groups such as Healthcare and Business Management follow, each with 48 employees, while Operations and Finance & Administration collectively account for another 73 team members. Smaller yet critical units include Marketing & Product (20), Sales & Support (13), Human Resources (12), and Risk, Safety & Compliance (11). An additional 28 employees are categorized in Other roles, reflecting the diverse expertise required to shepherd novel therapeutics from bench to clinic.

The company is headquartered in San Diego, where roughly 200 employees—more than half of the total workforce—are based. About one-quarter of staff work remotely or from unlisted locations, captured in the “Other” category with 90 employees. Avidity Biosciences also maintains smaller clusters in Boston (15) and San Francisco (13), two hubs known for biotechnology talent. Additional team members are spread across Seattle, Los Angeles, Raleigh-Durham, Philadelphia, New York, and Phoenix, highlighting a distributed yet strategically placed footprint that taps into several U.S. life-science corridors.