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.

• Employees: 25
• Change (1Y): -7
• Growth (1Y): -21.88%
• Revenue / Employee: $2,447,440
• Profits / Employee: $609,400
• Market Cap: 122.17M

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:

Jun 13, 2026

Data Sources Report a data error