Illumina, Inc. number of employees

Illumina, Inc. reported 8,600 employees at December 28, 2025 in its latest annual report, down 370 (4.1%) on the year before. That compares with 9,100 at January 2, 2022. Revenue per employee was $505,000.

Headcount by year

Fiscal year end	Employees	Change	Revenue per employee	Source
December 28, 2025	8,600	−370 (4.1%)	$505,000	10-K, filed February 12, 2026
December 29, 2024	8,970	−280 (3.0%)	$487,402	10-K, filed February 12, 2025
December 31, 2023	9,250	−950 (9.3%)	$486,919	10-K, filed February 16, 2024
January 1, 2023	10,200	+1,100 (12.1%)	$449,412	10-K, filed February 17, 2023
January 2, 2022	9,100	—	$497,363	10-K, filed February 18, 2022

What the annual reports say

As of December 28, 2025, our global workforce was comprised of approximately 8,600 full time employees, 50 part time employees, and 1,430 contingent workers. 2025 annual report
As of December 29, 2024, excluding GRAIL which was spun-off on June 24, 2024, our global workforce was comprised of approximately 8,970 full time employees, 60 part time employees, and 1,340 contingent workers. 2024 annual report
Core Illumina As of December 31, 2023, Core Illumina’s global workforce was comprised of approximately 9,250 full time employees, 50 part time employees, and 1,370 contingent workers. 2023 annual report
Core Illumina As of January 1, 2023, Core Illumina’s global workforce was comprised of approximately 10,200 full time employees, 60 part time employees, and 1,400 contingent workers. 2023 annual report
Our annual CSR Report is guided by the reporting frameworks of the Global Reporting Initiative (GRI), Sustainable Accounting Standards Board (SASB), and the Task Force for Climate related Financial Disclosures (TCFD). 11 Table of Contents Core Illumina As of January 2, 2022, Core Illumina’s global workforce was comprised of approximately 9,100 full time employees, 50 part time employees, and 1,600 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 Illumina, Inc.'s SEC filings (10-K and 10-Q), retrieved October 30, 2026. How we read and check them: methodology and data sources. Not investment advice. Back to Illumina, Inc.