How many employees work at Ionis Pharmaceuticals?
Ionis Pharmaceuticals, Inc. (IONS) has approximately 1,454 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Ionis Pharmaceuticals’s total headcount has grown 44.6% from 1,006 employees in 2023 to 1,454 in 2026.
Is Ionis Pharmaceuticals hiring right now?
Yes, Ionis Pharmaceuticals is actively hiring. Ionis Pharmaceuticals had 126 active job postings in 2026, a 37.7% increase from 2025 — see job openings & hiring trends.
About Ionis Pharmaceuticals’s Workforce
Ionis Pharmaceuticals, Inc. (IONS) is a Pharmaceuticals company that employs 1,454 people worldwide as of March 2026. It is the 6th-largest by headcount among its peers. Founded in 1989, the company is headquartered in Carlsbad, California and trades on the NASDAQ.
Ionis Pharmaceuticals's workforce has grown 44.6% from 2023 to 2026, up 2.0% year over year in 2026. Its workforce is concentrated most in North America (94.0%), followed by Northern Europe (1.8%) and South Asia (1.7%).
Ionis Pharmaceuticals's functional groups are Finance and Operations (46.4%), Sales and Marketing (27.4%), and Engineering (26.2%), with Sales and Marketing growing fastest (up 17.5%). The average salary is $176,684, ranging from a median of $165,000 in North America to $12,000 in South Asia, down 1.4% year over year in 2026.
Ionis Pharmaceuticals's active job postings rose 37.7% in 2026 to 126, with new postings per month climbing from 38 in 2023 to 48 in 2026. Overall employee sentiment is neutral but declining.
Sourced from Revelio Labs workforce data.
- Ticker
- NASDAQ: IONS
- Headquarters
- Carlsbad, California
- Founded
- 1989
- Industry
- Pharmaceuticals
- Employees
- 1,454
- YoY
- +2.0% (+256)
As of March 2026
Ionis Pharmaceuticals workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Ionis Pharmaceuticals. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsIonis Pharmaceuticals Annual Employee Count (2023-2026)
- Ionis Pharmaceuticals had 1,454 employees in 2026, a 2.0% increase (+256) from 2025.
- Ionis Pharmaceuticals had 1,407 employees in 2025, a 2.2% increase (+269) from 2024.
- Ionis Pharmaceuticals had 1,138 employees in 2024, a 1.4% increase (+103) from 2023.
- Ionis Pharmaceuticals had 1,035 employees in 2023, a 0.7% increase (+104) from 2022.
Ionis Pharmaceuticals's total workforce has grown from 1,006 employees in 2023 to 1,454 in 2026.
Ionis Pharmaceuticals, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 1,454 | +256 | +2.0% |
| 2025 | Q4 | 1,407 | +269 | +2.2% |
| 2025 | Q3 | 1,279 | +163 | +1.7% |
| 2025 | Q2 | 1,249 | +136 | +1.5% |
| 2025 | Q1 | 1,198 | +128 | +0.9% |
| 2024 | Q4 | 1,138 | +103 | +1.4% |
| 2024 | Q3 | 1,116 | +88 | +1.5% |
| 2024 | Q2 | 1,113 | +107 | +1.3% |
| 2024 | Q1 | 1,070 | +109 | +1.8% |
| 2023 | Q4 | 1,035 | +104 | +0.7% |
| 2023 | Q3 | 1,028 | +115 | +0.3% |
| 2023 | Q2 | 1,006 | +110 | +0.3% |
See Ionis Pharmaceuticals's complete headcount history, including quarterly breakdowns.
Get the DataIonis Pharmaceuticals Employee Count by Region (2026)
North America accounts for the largest share of Ionis Pharmaceuticals's global workforce with approximately 94% of total employees, followed by Northern Europe and South Asia.
Ionis Pharmaceuticals employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 1,332 | 94.0% |
| Northern Europe | 26 | 1.8% |
| South Asia | 24 | 1.7% |
| Western Europe | 8 | 0.5% |
| Southeast Asia | 7 | 0.5% |
| Southern Europe | 3 | 0.2% |
| Central and Western Asia | 3 | 0.2% |
| East Asia | 3 | 0.2% |
| Sub-Saharan Africa | 2 | 0.2% |
| North Africa | 2 | 0.2% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataIonis Pharmaceuticals Employee Count by Department (2026)
Ionis Pharmaceuticals's employee groups are Finance and Operations (46.4%), Sales and Marketing (27.4%), and Engineering (26.2%).
Ionis Pharmaceuticals employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 672 | 46.4% |
| Sales and Marketing | 397 | 27.4% |
| Engineering | 379 | 26.2% |
Compare Ionis Pharmaceuticals's department mix to industry peers.
See Full DataIonis Pharmaceuticals Employee Salary by Region (2026)
Ionis Pharmaceuticals's average employee salary is $176,684 globally. Employees in North America receive the highest compensation. Pay is lowest in South Asia, at a median of $12,000.
Ionis Pharmaceuticals median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $165,000 |
| Northern Europe | $119,000 |
| East Asia | $103,000 |
| Western Europe | $56,000 |
| Southern Europe | $55,000 |
| Sub-Saharan Africa | $28,000 |
| Central America and the Caribbean | $24,000 |
| Southeast Asia | $24,000 |
| South Asia | $12,000 |
| North Africa | $11,000 |
Unlock salary by role, level, and city — and compare to Ionis Pharmaceuticals's industry peers.
Unlock Salary DataIonis Pharmaceuticals Job Openings and Hiring Trends (2023-2026)
- Ionis Pharmaceuticals had 126 active job postings in 2026, a 37.7% increase (+52) from 2025.
- Ionis Pharmaceuticals had 74 active job postings in 2025, a 76.6% increase (+41) from 2024.
- Ionis Pharmaceuticals had 33 active job postings in 2024, a 20.0% increase (+6) from 2023.
- Ionis Pharmaceuticals had 27 active job postings in 2023, a 74.4% decline from 2022.
- Hiring velocity in 2026: 48 new roles/month, down from 57 in 2025 and 29 in 2024.
Ionis Pharmaceuticals's hiring is accelerating: active job postings rose 37.7% in 2026 to 126, with new postings per month climbing from 38 in 2023 to 48 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Unlock Hiring DataIonis Pharmaceuticals Employee Sentiment (2026)
Revelio Labs tracks employee sentiment across Ionis Pharmaceuticals's workforce based on public professional data. Overall sentiment is neutral and has declined year over year in 2026.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
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Frequently Asked Questions About Ionis Pharmaceuticals
- How fast is Ionis Pharmaceuticals growing?
- In 2026, Ionis Pharmaceuticals's headcount grew 2.0% to 1,454 employees, up from 1,198 in 2025.
- See the full headcount history
- Where are Ionis Pharmaceuticals employees located?
- Most Ionis Pharmaceuticals employees are based in North America (94.0% of headcount), followed by Northern Europe and South Asia.
- Explore where the workforce is based
- What is the average salary at Ionis Pharmaceuticals?
- The average employee salary at Ionis Pharmaceuticals is approximately $176.7k per year.
- Analyze the salary distribution
- How many new job postings does Ionis Pharmaceuticals open per year?
- In Q1 2026, Ionis Pharmaceuticals opened 145 new job postings. In 2025, Ionis Pharmaceuticals opened 678 new job postings — about 57 per month.
- Track hiring trends by role
- When was Ionis Pharmaceuticals founded and where is it headquartered?
- Ionis Pharmaceuticals was founded in 1989 and is headquartered in Carlsbad, California.
- Compare Ionis Pharmaceuticals to industry peers
Speak with a workforce expert about Ionis Pharmaceuticals.
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