Ultragenyx Pharmaceutical Inc. number of employees

Ultragenyx Pharmaceutical Inc. reported 1,371 employees at December 31, 2025 in its latest annual report. Revenue per employee was $490,883.

Headcount by year

Fiscal year end	Employees	Change	Revenue per employee	Source
December 31, 2025	1,371	—	$490,883	10-K, filed February 18, 2026

What the annual reports say

Human Capital General Information As of December 31, 2025, we had 1,371 total employees, of which 916 are in research and development and 455 are in sales, general, and administrative. 2025 annual report

Headcount as the company states it in Item 1 of its annual report (some count full-time equivalents or exclude part-time and temporary staff), at the date it gives. Years where the report states no clear total are left out rather than estimated. Changes can reflect acquisitions and disposals as well as hiring and job cuts.

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Figures from Ultragenyx Pharmaceutical Inc.'s SEC filings (10-K and 10-Q), retrieved October 29, 2026. How we read and check them: methodology and data sources. Not investment advice. Back to Ultragenyx Pharmaceutical Inc.