Ionis Pharmaceuticals, Inc. (IONS)

Ionis Pharmaceuticals Employees

Ionis Pharmaceuticals had 1,480 employees as of June 30, 2026. The number of employees increased by 78 or 5.56% since the number was reported on December 31, 2025. That makes Ionis Pharmaceuticals the 12,185th largest employer in the world and 1,925th in the United States.

• Employees: 1,480
• Change: 78
• Growth: 5.56%
• Revenue / Employee: $590,603
• Profits / Employee: -$381,874
• Market Cap: 6.85B

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Employees History

Date	Employees	Change	Growth
Jun 30, 2026	1,480	78	5.56%
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%

Data Source: S&P Global Market Intelligence Last updated: Jun 30, 2026

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:

Oct 30, 2026

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