Prothena Corp Public LTD Co number of employees

Prothena Corp Public LTD Co reported 67 employees at December 31, 2025 in its latest annual report.

Headcount by year

Fiscal year end	Employees	Change	Revenue per employee	Source
December 31, 2025	67	—	—	10-K, filed February 27, 2026

What the annual reports say

Employees and Human Capital Management As of December 31, 2025, we had 67 employees, including 13 who held M.D. and/or Ph.D. degrees.Of our total employees, 36 were engaged in research and development (R&D) activities and the remainder were engaged in general and administrative (G&A) functions. 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.

More: Biotechnology stocks compared, Health Care sector, rankings of US companies

Figures from Prothena Corp Public LTD Co's SEC filings (10-K and 10-Q). How we read and check them: methodology and data sources. Not investment advice. Back to Prothena Corp Public LTD Co.