How many employees work at Amphastar Pharmaceuticals?
Amphastar Pharmaceuticals, Inc. (AMPH) has approximately 1,988 total employees worldwide as of March 2026, according to Revelio Labs workforce intelligence data. Amphastar Pharmaceuticals’s total headcount has grown 4.2% from 1,908 employees in 2023 to 1,988 in 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 1,988 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 Pharmaceuticals's workforce has grown 4.2% from 2023 to 2026, though it is down 0.6% year over year in 2026. Its workforce is concentrated most in North America (76.2%), followed by Western Europe (14.3%) and East Asia (9.4%).
Amphastar Pharmaceuticals's functional groups are Finance and Operations (41.1%), Engineering (31.6%), and Sales and Marketing (27.3%), with Finance and Operations growing fastest (up 0.7%). The average salary is $73,911, ranging from a median of $68,000 in North America to $37,000 in East Asia, up 1.7% year over year in 2026.
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. Overall employee sentiment is negative and declining.
Sourced from Revelio Labs workforce data.
- Ticker
- NASDAQ: AMPH
- Headquarters
- Rancho Cucamonga, California
- Founded
- 1996
- Industry
- Pharmaceuticals
- Employees
- 1,988
- YoY
- -0.6% (-35)
As of March 2026
Amphastar Pharmaceuticals workforce metrics
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.
Unlock MetricsAmphastar Pharmaceuticals Annual Employee Count (2023-2026)
- Amphastar Pharmaceuticals had 1,988 employees in 2026, a 0.6% decline (-35) from 2025.
- Amphastar Pharmaceuticals had 1,985 employees in 2025, a 0% no change (-38) from 2024.
- Amphastar Pharmaceuticals had 2,023 employees in 2024, a 2.9% increase (+102) from 2023.
- Amphastar Pharmaceuticals had 1,921 employees in 2023, a 3.4% increase (+25) from 2022.
Amphastar Pharmaceuticals's total workforce has grown from 1,908 employees in 2023 to 1,988 in 2026.
Amphastar Pharmaceuticals, Inc. quarterly employee count
| Year | Qtr | Employees | YoY Change | YoY % |
|---|---|---|---|---|
| 2026 | Q1 | 1,988 | -35 | -0.6% |
| 2025 | Q4 | 1,985 | -38 | +0.0% |
| 2025 | Q3 | 1,984 | -19 | +0.9% |
| 2025 | Q2 | 1,992 | -13 | +1.1% |
| 2025 | Q1 | 2,023 | +57 | +2.6% |
| 2024 | Q4 | 2,023 | +102 | +2.9% |
| 2024 | Q3 | 2,003 | +73 | +2.8% |
| 2024 | Q2 | 2,005 | +97 | +4.0% |
| 2024 | Q1 | 1,966 | +38 | +2.3% |
| 2023 | Q4 | 1,921 | +25 | +3.4% |
| 2023 | Q3 | 1,930 | +33 | +3.0% |
| 2023 | Q2 | 1,908 | +26 | +2.6% |
See Amphastar Pharmaceuticals's complete headcount history, including quarterly breakdowns.
Get the DataAmphastar Pharmaceuticals Employee Count by Region (2026)
North America accounts for the largest share of Amphastar Pharmaceuticals's global workforce with approximately 76% of total employees, followed by Western Europe and East Asia.
Amphastar Pharmaceuticals employees by region
| Region | Employees | % of Total |
|---|---|---|
| North America | 1,504 | 76.2% |
| Western Europe | 283 | 14.3% |
| East Asia | 186 | 9.4% |
| South America | 2 | 0.1% |
Drill into city-level data, hiring trends by region, and historic geographic shifts.
Unlock Geographic DataAmphastar Pharmaceuticals Employee Count by Department (2026)
Amphastar Pharmaceuticals's employee groups are Finance and Operations (41.1%), Engineering (31.6%), and Sales and Marketing (27.3%).
Amphastar Pharmaceuticals employees by department
| Department | Employees | % of Total |
|---|---|---|
| Finance and Operations | 812 | 41.1% |
| Engineering | 626 | 31.6% |
| Sales and Marketing | 540 | 27.3% |
Compare Amphastar Pharmaceuticals's department mix to industry peers.
See Full DataAmphastar Pharmaceuticals Employee Salary by Region (2026)
Amphastar Pharmaceuticals's average employee salary is $73,911 globally. Employees in North America receive the highest compensation. Pay is lowest in East Asia, at a median of $37,000.
Amphastar Pharmaceuticals median employee salary by region (USD)
| Region | Median Salary |
|---|---|
| North America | $68,000 |
| Western Europe | $42,000 |
| East Asia | $37,000 |
Unlock salary by role, level, and city — and compare to Amphastar Pharmaceuticals's industry peers.
Unlock Salary DataAmphastar Pharmaceuticals Job Openings and Hiring Trends (2023-2026)
- 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.
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.
Unlock Hiring DataAmphastar Pharmaceuticals Employee Sentiment (2026)
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.
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Frequently Asked Questions About Amphastar Pharmaceuticals
- How fast is Amphastar Pharmaceuticals growing?
- In 2026, Amphastar Pharmaceuticals's headcount shrank 0.6% to 1,988 employees, down from 2,023 in 2025.
- See the full headcount history
- Where are Amphastar Pharmaceuticals employees located?
- Most Amphastar Pharmaceuticals employees are based in North America (76.2% of headcount), followed by Western Europe and East Asia.
- Explore where the workforce is based
- What is the average salary at Amphastar Pharmaceuticals?
- The average employee salary at Amphastar Pharmaceuticals is approximately $73.9k per year.
- Analyze the salary distribution
- How many new job postings does Amphastar Pharmaceuticals open per year?
- In Q1 2026, Amphastar Pharmaceuticals opened 38 new job postings. In 2025, Amphastar Pharmaceuticals opened 104 new job postings — about 9 per month.
- Track hiring trends by role
- When was Amphastar Pharmaceuticals founded and where is it headquartered?
- Amphastar Pharmaceuticals was founded in 1996 and is headquartered in Rancho Cucamonga, California.
- Compare Amphastar Pharmaceuticals to industry peers
Speak with a workforce expert about Amphastar Pharmaceuticals.
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