Ionis Pharmaceuticals, Inc. (IONS)

Ionis Pharmaceuticals Employees

Ionis Pharmaceuticals had 1,402 employees as of December 31, 2025. The number of employees increased by 333 or 31.15% compared to the previous year.

• Employees: 1,402
• Change (1Y): 333
• Growth (1Y): 31.15%
• Revenue / Employee: $754,772
• Profits / Employee: -$233,222
• Market Cap: 8.84B

Employees Chart

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Employees History

Date	Employees	Change (1Y)	Growth (1Y)
Dec 31, 2025	1,402	333	31.15%
Dec 31, 2024	1,069	142	15.32%
Dec 31, 2023	927	131	16.46%
Dec 31, 2022	796	136	20.61%
Dec 31, 2021	660	-97	-12.81%

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:

Jul 21, 2026

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