Company data
Amphastar Pharmaceuticals, Inc. employees and revenue per employee
AMPH · Drug Manufacturers - Specialty & Generic · $1.17B market cap
Amphastar Pharmaceuticals, Inc. had 1,976 employees at the end of fiscal Dec 2025, down 2.6% from a year earlier. Revenue for the year was $720M, down 1.7% from a year earlier, or $364K per employee. Revenue fell, and headcount fell or held flat with it.
Employees
1,976
-2.6% YoY
Revenue
$720M
-1.7% YoY
Revenue / employee
$364K
Peer median $825K
Rank in industry
15 of 17
Drug Manufacturers - Specialty & Generic
Headcount against revenue
Both lines start at 100 in the first year we hold, so you can see which one grew faster.
Hover a year for the numbers.
| Year ending | Employees | Revenue | Per employee | Staff YoY | Revenue YoY |
|---|---|---|---|---|---|
| Dec 2025 | 1,976 | $720M | $364K | -2.6% | -1.7% |
| Dec 2024 | 2,028 | $732M | $361K | +15.2% | +13.6% |
| Dec 2023 | 1,761 | $644M | $366K | +9.0% | +29.1% |
| Dec 2022 | 1,615 | $499M | $309K | -8.3% | +14.0% |
| Dec 2021 | 1,761 | $438M | $249K | -11.1% | +25.1% |
| Dec 2020 | 1,980 | $350M | $177K | -2.3% | +8.5% |
| Dec 2019 | 2,027 | $322M | $159K | -2.5% | +9.4% |
| Dec 2018 | 2,078 | $295M | $142K | +26.4% | +22.7% |
| Dec 2017 | 1,644 | $240M | $146K | +6.7% | -5.9% |
| Dec 2016 | 1,541 | $255M | $166K | — | — |
Open roles: we have not matched a verified job board for this company yet.
Amphastar Pharmaceuticals, Inc. against similar companies
The closest industry peers by revenue, from Drug Manufacturers - Specialty & Generic.
| Company | Employees | Revenue | Revenue / employee | Shape |
|---|---|---|---|---|
| COLL Collegium Pharmaceutical, Inc. | 423 | $781M | $1.85M | Efficient growth |
| INDV Indivior Pharmaceuticals Inc | 827 | $1.24B | $1.50M | Leaner |
| LNTH Lantheus Holdings, Inc. | 1,193 | $1.54B | $1.29M | Hiring ahead |
| SUPN Supernus Pharmaceuticals, Inc. | 778 | $719M | $924K | Hiring ahead |
| ANIP ANI Pharmaceuticals, Inc. | 970 | $883M | $911K | Efficient growth |
| PCRX Pacira BioSciences, Inc. | 825 | $726M | $880K | Hiring ahead |
| EBS Emergent BioSolutions Inc. | 900 | $743M | $825K | Contracting |
| PAHC Phibro Animal Health Corporation | 2,605 | $1.52B | $583K | Efficient growth |
| AMPH Amphastar Pharmaceuticals, Inc. | 1,976 | $720M | $364K | Contracting |
Questions about Amphastar Pharmaceuticals, Inc.
- How many employees does Amphastar Pharmaceuticals, Inc. have?
- Amphastar Pharmaceuticals, Inc. reported 1,976 employees for the fiscal year ending Dec 2025, in the annual report it filed on February 26, 2026. That is down 2.6% from a year earlier.
- What is Amphastar Pharmaceuticals, Inc.'s revenue per employee?
- Amphastar Pharmaceuticals, Inc. brought in $720M of revenue in fiscal Dec 2025, which is $364K per employee. That ranks 15 of 17 companies we track in Drug Manufacturers - Specialty & Generic, where the median is $825K.
- Where do these numbers come from?
- Employee counts and revenue are taken from each company's own annual report (Form 10-K). Open roles are counted from the company's public job board where we have matched one. Companies report headcount once a year, sometimes rounded, so small changes can be noise.
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Source: employee counts and revenue as stated in Amphastar Pharmaceuticals, Inc.'s annual reports (Form 10-K), latest filed February 26, 2026. This is data, not a recommendation to buy or sell AMPH.