Arrowhead Pharmaceuticals, Inc. number of employees

Arrowhead Pharmaceuticals, Inc. reported 711 employees at September 30, 2025 in its latest annual report, up 102 (16.7%) on the year before. That compares with 397 at September 30, 2022. Revenue per employee was $1.2m.

Headcount by year

Fiscal year end	Employees	Change	Revenue per employee	Source
September 30, 2025	711	+102 (16.7%)	$1.2m	10-K, filed November 25, 2025
September 30, 2024	609	+84 (16.0%)	$5,831	10-K, filed November 26, 2024
September 30, 2023	525	+128 (32.2%)	$458,543	10-K, filed November 29, 2023
September 30, 2022	397	—	$612,673	10-K, filed November 28, 2022

What the annual reports say

Human Capital Management As of September 30, 2025, the Company employed 711 full-time employees based at four facilities in the United States, including Pasadena and San Diego, California, and Madison and Verona, Wisconsin. 2025 annual report
Human Capital Management As of September 30, 2024, the Company employed 609 full-time employees based at four facilities in the United States, including Pasadena and San Diego, California, and Madison and Verona, Wisconsin. 2024 annual report
Human Capital Management As of September 30, 2023, the Company employed 525 full time employees based at three facilities in the United States, including Pasadena and San Diego, California, and Madison, Wisconsin. 2023 annual report
Human Capital Management As of September 30, 2022, Arrowhead employed 397 full time employees based at three facilities in the United States, including Pasadena and San Diego, California, and Madison, Wisconsin. 2022 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 Arrowhead Pharmaceuticals, Inc.'s SEC filings (10-K and 10-Q), retrieved October 20, 2026. How we read and check them: methodology and data sources. Not investment advice. Back to Arrowhead Pharmaceuticals, Inc.