Karyopharm Therapeutics Inc. number of employees

Karyopharm Therapeutics Inc. reported 228 employees at December 31, 2025 in its latest annual report. Revenue per employee was $640,645.

Headcount by year

Fiscal year end	Employees	Change	Revenue per employee	Source
December 31, 2025	228	—	$640,645	10-K, filed February 13, 2026

What the annual reports say

As of February 5, 2026, we had 228 employees, all of whom were full-time employees. 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.

Compare with peers

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Figures from Karyopharm Therapeutics 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 Karyopharm Therapeutics Inc.