Amphastar Pharmaceuticals, Inc. number of employees

Amphastar Pharmaceuticals, Inc. reported 1,976 employees at December 31, 2025 in its latest annual report. Revenue per employee was $364,315.

Headcount by year

Fiscal year end	Employees	Change	Revenue per employee	Source
December 31, 2025	1,976	—	$364,315	10-K, filed February 26, 2026

What the annual reports say

However, even if we pursue litigation or other action to protect our intellectual property rights, we may not prevail in any of these actions or proceedings. Human Capital As of December 31, 2025, we had 1,976 full-time employees in the United States, China, and France. 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 Amphastar Pharmaceuticals, 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 Amphastar Pharmaceuticals, Inc.