How many employees work at Mirum Pharmaceuticals?
Mirum Pharmaceuticals, Inc. (MIRM) has approximately 392 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Mirum Pharmaceuticals’s total headcount has grown 81.7% from 216 employees in 2023 to 392 in 2026.
Is Mirum Pharmaceuticals hiring right now?
Yes, Mirum Pharmaceuticals is actively hiring. Mirum Pharmaceuticals had 84 active job postings in 2026, a 73.2% increase from 2025 — see job openings & hiring trends.
About Mirum Pharmaceuticals’s Workforce
Mirum Pharmaceuticals, Inc. (MIRM) is a Pharmaceuticals company that employs 392 people worldwide as of March 2026. It is the 6th-largest by headcount among its peers. Founded in 2018, the company is headquartered in Foster City, California and trades on the NASDAQ.
Mirum Pharmaceuticals's workforce has grown 81.7% from 2023 to 2026, and it rose 2.9% year over year in 2026. Its workforce is concentrated most in the United States (78.1%), followed by Switzerland (13.9%) and Italy (2.1%), with Argentina, its fastest-growing location.
Mirum Pharmaceuticals's largest functional groups are Finance and Operations (51.3%), Sales and Marketing (28.0%), and Engineering (20.7%), with Engineering growing fastest (up 16.3%). Median employee tenure is 1.9 years. The average salary is $215,301, ranging from a median of $205,000 in Northern America to $88,000 in Southern Europe.
Mirum Pharmaceuticals's active job postings rose 73.2% in 2026 to 84, with new postings per month climbing from 27 in 2023 to 33 in 2026.
Sourced from Revelio Labs workforce data.
- Ticker
- NASDAQ: MIRM
- Headquarters
- Foster City, California
- Founded
- 2018
- Industry
- Pharmaceuticals
- Employees
- 392
- YoY
- +2.9% (+56)
As of March 2026
Mirum Pharmaceuticals workforce metrics
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Mirum Pharmaceuticals. Compare to peers, export the dataset, and access the full quarterly history.
Unlock MetricsMirum Pharmaceuticals Annual Employee Count (2023-2026)
- Mirum Pharmaceuticals had 392 employees in 2026, a 2.9% increase (+56) from 2025.
- Mirum Pharmaceuticals had 372 employees in 2025, a 1.2% increase (+45) from 2024.
- Mirum Pharmaceuticals had 327 employees in 2024, a 2.8% increase (+63) from 2023.
- Mirum Pharmaceuticals had 264 employees in 2023, a 7.4% increase (+74) from 2022.
Mirum Pharmaceuticals's total workforce has grown from 216 employees in 2023 to 392 in 2026.
Mirum Pharmaceuticals, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 392 | +56 | +2.9% |
| 2025 | Q4 | 372 | +45 | +1.2% |
| 2025 | Q3 | 358 | +52 | +2.3% |
| 2025 | Q2 | 352 | +55 | +3.2% |
| 2025 | Q1 | 336 | +51 | +0.9% |
| 2024 | Q4 | 327 | +63 | +2.8% |
| 2024 | Q3 | 306 | +61 | +3.9% |
| 2024 | Q2 | 297 | +81 | +5.3% |
| 2024 | Q1 | 285 | +84 | +5.7% |
| 2023 | Q4 | 264 | +74 | +7.4% |
| 2023 | Q3 | 245 | +63 | +5.8% |
| 2023 | Q2 | 216 | +51 | +3.2% |
See Mirum Pharmaceuticals's complete headcount history, including quarterly breakdowns.
Get the DataMirum Pharmaceuticals Employee Count by Country and Region (2026)
The United States accounts for the largest share of Mirum Pharmaceuticals's global workforce with approximately 78% of total employees, followed by Switzerland and Italy. Mirum Pharmaceuticals's headcount in Argentina is growing fastest among its major locations, up 100.0% year over year in 2026.
Mirum Pharmaceuticals employees by country
| Country | Employees | % of Total | YoY % |
|---|---|---|---|
| United States | 294 | 78.1% | +5.4% |
| Switzerland | 52 | 13.9% | +11.2% |
| Italy | 8 | 2.1% | +15.5% |
| Canada | 7 | 1.9% | +0.3% |
| Germany | 6 | 1.6% | +4.3% |
| France | 3 | 0.8% | +18.1% |
| Spain | 3 | 0.7% | +30.0% |
| Argentina | 1 | 0.3% | +100.0% |
| United Kingdom | 1 | 0.3% | -49.7% |
| Puerto Rico | 1 | 0.3% | +0.0% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataMirum Pharmaceuticals Employee Count by Department (2026)
Mirum Pharmaceuticals's largest employee groups are Finance and Operations (51.3%), Sales and Marketing (28.0%), and Engineering (20.7%).
Mirum Pharmaceuticals employees by department
| Department | Employees | % of Total | YoY % |
|---|---|---|---|
| Finance and Operations | 201 | 51.3% | +7.0% |
| Sales and Marketing | 110 | 28.0% | +1.0% |
| Engineering | 81 | 20.7% | +16.3% |
Compare Mirum Pharmaceuticals's department mix to industry peers.
See Full DataMirum Pharmaceuticals Employee Salary by Region (2026)
Mirum Pharmaceuticals's average employee salary is $215,301 globally. Employees in Northern America receive the highest compensation. Pay is lowest in Southern Europe, at a median of $88,000.
Mirum Pharmaceuticals median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| Northern America | $205,000 |
| Western Europe | $204,000 |
| Southern Europe | $88,000 |
Unlock salary by role, level, and city — and compare to Mirum Pharmaceuticals's industry peers.
Unlock Salary DataMirum Pharmaceuticals Job Openings and Hiring Trends (2023-2026)
- Mirum Pharmaceuticals had 84 active job postings in 2026, a 73.2% increase (+38) from 2025.
- Mirum Pharmaceuticals had 46 active job postings in 2025, a 21.7% increase (+9) from 2024.
- Mirum Pharmaceuticals had 37 active job postings in 2024, a 27.7% increase (+9) from 2023.
- Mirum Pharmaceuticals had 28 active job postings in 2023, a 38.3% increase from 2022.
- Hiring velocity in 2026: 33 new roles/month, up from 21 in 2025 and 21 in 2024.
Mirum Pharmaceuticals's hiring is accelerating: active job postings rose 73.2% in 2026 to 84, with new postings per month climbing from 27 in 2023 to 33 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
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Frequently Asked Questions About Mirum Pharmaceuticals
- How fast is Mirum Pharmaceuticals growing?
- In 2026, Mirum Pharmaceuticals's headcount grew 2.9% to 392 employees, up from 336 in 2025.
- Where are Mirum Pharmaceuticals employees located?
- Most Mirum Pharmaceuticals employees are based in the United States (78.1% of headcount), followed by Switzerland and Italy.
- What is the average salary at Mirum Pharmaceuticals?
- The average employee salary at Mirum Pharmaceuticals is approximately $215.3k per year.
- How many people does Mirum Pharmaceuticals hire per year?
- In 2026, Mirum Pharmaceuticals opened roughly 396 new roles — about 33 per month.
- When was Mirum Pharmaceuticals founded and where is it headquartered?
- Mirum Pharmaceuticals was founded in 2018 and is headquartered in Foster City, California.
Speak with a workforce expert about Mirum Pharmaceuticals.
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