Spero Therapeutics, Inc. (SPRO)

Spero Therapeutics Employees

Spero Therapeutics had 25 employees as of December 31, 2025. The number of employees decreased by 7 or 21.88% compared to the previous year. That makes Spero Therapeutics the 37,757th largest employer in the world and 5,353rd in the United States.

• Employees: 25
• Change (1Y): -7
• Growth (1Y): -21.88%
• Revenue / Employee: $1,879,880
• Profits / Employee: $295,320
• Market Cap: 59.98M

Employees Chart

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Employees History

Date	Employees	Change (1Y)	Growth (1Y)
Dec 31, 2025	25	-7	-21.88%
Dec 31, 2024	32	-14	-30.43%
Dec 31, 2023	46	11	31.43%
Dec 31, 2022	35	-111	-76.03%
Dec 31, 2021	146	57	64.04%

Data Source: S&P Global Market Intelligence Last updated: Dec 31, 2025

Employee data is provided by S&P Global Market Intelligence and updates once per year after the filing of each annual report.

Update frequency:

Yearly

Last checked:

Nov 1, 2026

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