Seres Therapeutics, Inc. number of employees

Seres Therapeutics, Inc. reported 66 employees at December 31, 2025 in its latest annual report. Revenue per employee was $11,955.

Headcount by year

Fiscal year end	Employees	Change	Revenue per employee	Source
December 31, 2025	66	—	$11,955	10-K, filed March 12, 2026

What the annual reports say

Human Capital Employees As of December 31, 2025, we had 66 full-time permanent employees, which included 14 employees in operations and administration and 52 employees in research and development (which includes clinical and manufacturing). 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 Seres 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 Seres Therapeutics, Inc.