How many employees work at Amphastar Pharmaceuticals?
Amphastar Pharmaceuticals, Inc. (AMPH) has approximately 1,355 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Amphastar Pharmaceuticals's total headcount has grown 4.7% from 1,294 employees in 2023 to 1,355 in 2026.
Data source: Revelio LabsCoverage: Global workforce, 2023–2026Published July 2026
Is Amphastar Pharmaceuticals hiring right now?
Yes, Amphastar Pharmaceuticals is actively hiring. Amphastar Pharmaceuticals had 18 active job postings in 2026, a 25.0% increase from 2025 — see job openings & hiring trends.
About Amphastar Pharmaceuticals's Workforce
Amphastar Pharmaceuticals, Inc. (AMPH) is a Pharmaceuticals company that employs 1,355 people worldwide as of March 2026. It is the 7th-largest by headcount among its peers. Founded in 1996, the company is headquartered in Rancho Cucamonga, California and trades on the NASDAQ.
Amphastar's workforce has grown 4.7% from 2023 to 2026, though it is down 0.4% year over year in 2026. Its geographic mix is heavily concentrated in the United States (76.1%), with France at 13.6% and China at 9.7%, followed by smaller shares in Brazil (0.2%), Switzerland (0.2%), and Canada (0.3%), with Brazil noted as the fastest-growing location.
Amphastar's largest groups by headcount are Finance and Operations (40.6%), Engineering (32.1%), and Sales and Marketing (27.3%), with Engineering the fastest-growing group (up 1.5%). The average tenure across employees is 4.6 years. The overall average salary is $73,246, with regional medians of $68,000 in Northern America and $37,000 in Eastern Asia.
Amphastar's hiring activity shows 18 postings in the latest quarter, up 25.0% year over year, with new postings per month rising to 13 in 2026 from 20 in 2023 and 18 in 2024. Employee sentiment is negative and directionally down.
Sourced from Revelio Labs workforce data.
As of March 2026
Amphastar Pharmaceuticals
workforce metrics
Headcount
1.4k
0.4% YoY
Avg. Salary
$73.2k
1.0% YoY
Tenure
4.6yr
0.1yr YoY
Growth Rate
-0.4%
2.6pts YoY
Hiring Rate
Attrition Rate
Unlock hiring rate, attrition rate, and 12 additional workforce metrics for Amphastar Pharmaceuticals. Compare to peers, export the dataset, and access the full quarterly history.
- Amphastar Pharmaceuticals had 1,355 employees in 2026, a 0.4% decline (-6) from 2025.
- Amphastar Pharmaceuticals had 1,347 employees in 2025, a 1.2% decline (-15) from 2024.
- Amphastar Pharmaceuticals had 1,362 employees in 2024, a 4.4% increase (+59) from 2023.
- Amphastar Pharmaceuticals had 1,303 employees in 2023, a 1.4% increase (+17) from 2022.
Amphastar Pharmaceuticals's total workforce has grown from 1,294 employees in 2023 to 1,355 in 2026.
Amphastar Pharmaceuticals, Inc. — quarterly employee count (2023–2026)
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 1,355 | -6 | -0.4% |
| 2025 | Q4 | 1,347 | -15 | -1.2% |
| 2025 | Q3 | 1,346 | -4 | -0.3% |
| 2025 | Q2 | 1,343 | -15 | -1.1% |
| 2025 | Q1 | 1,361 | +30 | +2.2% |
| 2024 | Q4 | 1,362 | +59 | +4.4% |
| 2024 | Q3 | 1,350 | +42 | +3.2% |
| 2024 | Q2 | 1,358 | +64 | +4.8% |
| 2024 | Q1 | 1,331 | +22 | +1.7% |
| 2023 | Q4 | 1,303 | +17 | +1.4% |
| 2023 | Q3 | 1,308 | +19 | +1.4% |
| 2023 | Q2 | 1,294 | +7 | +0.6% |
Want to see Amphastar Pharmaceuticals's complete headcount history back to 2008, including quarterly breakdowns?
The United States accounts for the largest share of Amphastar Pharmaceuticals's global workforce with approximately 76% of total employees, followed by France and China. Amphastar Pharmaceuticals's headcount in Brazil is growing fastest among its major locations, up 100.0% year over year in 2026.
Amphastar Pharmaceuticals employees by country — 2026
| Country | Employees | % of Total | YoY % |
|---|---|---|---|
| United States | 1,025 | 76.1% | +1.2% |
| France | 183 | 13.6% | -3.2% |
| China | 131 | 9.7% | +0.0% |
| Canada | 4 | 0.3% | +0.0% |
| Brazil | 3 | 0.2% | +100.0% |
| Switzerland | 3 | 0.2% | +11.9% |
Drill into city-level data, hiring trends by region and historic geographic shifts
Amphastar Pharmaceuticals's largest employee groups are Finance and Operations (40.6%), Engineering (32.1%), and Sales and Marketing (27.3%).
Amphastar Pharmaceuticals employees by department — 2026
| Department | Employees | % of Total | YoY % |
|---|---|---|---|
| Finance and Operations | 548 | 40.6% | +0.9% |
| Engineering | 433 | 32.1% | +1.5% |
| Sales and Marketing | 368 | 27.3% | -0.9% |
Compare Amphastar Pharmaceuticals's department mix to industry peers.
Amphastar Pharmaceuticals's average employee salary is $73,246 globally. Employees in Northern America receive the highest compensation. Pay is lowest in Eastern Asia, at a median of $37,000.
Amphastar Pharmaceuticals median employee salary by region — 2026 (USD)
| Region | Median Salary |
|---|---|
| Northern America | $68,000 |
| Western Europe | $44,000 |
| Eastern Asia | $37,000 |
Unlock salary by role, level, and city — and compare to Amphastar Pharmaceuticals's industry peers.
- Amphastar Pharmaceuticals had 18 active job postings in 2026, a 25.0% increase from 2025.
- Amphastar Pharmaceuticals had 18 active job postings in 2025, a 28.6% decline (-6) from 2024.
- Amphastar Pharmaceuticals had 24 active job postings in 2024, a 15.4% decline (-4) from 2023.
- Amphastar Pharmaceuticals had 28 active job postings in 2023, a 7.4% increase from 2022.
- Hiring velocity in 2026: 13 new roles/month, up from 9 in 2025 and 18 in 2024. New metric
Amphastar Pharmaceuticals's active job postings rose 25.0% in 2026 to 18, with new postings per month cooling from 20 in 2023 to 13 in 2026.
Track new postings per month, role-level demand, and hiring velocity vs. peers.
Revelio Labs tracks employee sentiment across Amphastar Pharmaceuticals's workforce based on public professional data. Overall sentiment is negative and has declined year over year in 2026.
Overall
Unlock the full sentiment breakdown by department, tenure, and trend over time.
- How fast is Amphastar Pharmaceuticals growing?
- In 2026, Amphastar Pharmaceuticals's headcount shrank 0.4% to 1,355 employees, down from 1,361 in 2025.
- Where are Amphastar Pharmaceuticals employees located?
- Most Amphastar Pharmaceuticals employees are based in the United States (76.1% of headcount), followed by France and China.
- What is the average salary at Amphastar Pharmaceuticals?
- The average employee salary at Amphastar Pharmaceuticals is approximately $73.2k per year.
- How many people does Amphastar Pharmaceuticals hire per year?
- In 2026, Amphastar Pharmaceuticals opened roughly 156 new roles — about 13 per month.
- When was Amphastar Pharmaceuticals founded and where is it headquartered?
- Amphastar Pharmaceuticals was founded in 1996 and is headquartered in Rancho Cucamonga, California.
See something that doesn't look right? Reach out and our team will review it.