Companies: 10,795·Total market cap: $144.5T
Amphastar Pharmaceuticals, Inc.

Amphastar Pharmaceuticals, Inc.

AMPHNASDAQHealthcare● Active
$19.74
+$1.04(+5.56%)
Market Cap$870394221
P/E Ratio—
52W High$31.26
52W Low$16.65
EmployeesOwnershipInsider Trades

Amphastar Pharmaceuticals, Inc. (AMPH) Number of Employees – History & Annual Headcount

Annual SEC headcount, year-over-year change, and per-employee efficiency — chart and full history below.

SEC EDGAR · FMP · AMPH · as of Feb 26, 2026

Latest filing snapshot

1,976
-52-2.56%vs prior year

Amphastar Pharmaceuticals, Inc. (AMPH) employee data is sourced from the annual SEC 10-K filing. As of 2025, full-time employees only. Global consolidated headcount. View SEC filing ↗

SEC 10-K·Period end: 2025-12-31·Full-time · Global
Total Employees
1,976
Change (1Y)
-52
Growth % (1Y)
-2.56%
Revenue / Employee
$364.3K
Net Income / Employee
$49.6K
Market Cap
$870M

AMPH Employee Count

2014 – 2025 · Annual · SEC filing

Source: SEC annual filings · Hover bar to view year data · Click to view original filing

Employees History

Filing DateEmployeesChange (1Y)Growth (1Y)SEC filing link
2026-02-261,976-52-2.56%
2025-03-032,028+267+15.16%
2024-02-291,761+146+9.04%
2023-03-011,615-146-8.29%
2022-03-111,761-219-11.06%
2021-03-151,980-47-2.32%
2020-03-162,027-51-2.45%
2019-03-152,078+434+26.40%
2018-03-141,644+103+6.68%
2017-03-151,541+81+5.55%

▸ Source: SEC Annual Reports (Form 10-K / 20-F). Employee counts as of fiscal year end. Click the ↗ icon at the end of a row to open the original SEC filing in a new tab.

Related Companies — Employee Count

Drug Manufacturers - Specialty & Generic
#SymbolCompanyEmployees
#1
AdaptHealth Corp.
AHCO
AdaptHealth Corp.
10,500#2
Embecta Corp.
EMBC
Embecta Corp.
2,000#3
Amphastar Pharmaceuticals, Inc.
AMPH
Amphastar Pharmaceuticals, Inc.YOU
1,976#4
CureVac N.V.
CVAC
CureVac N.V.
825#5
Dynavax Technologies Corporation
DVAX
Dynavax Technologies Corporation
405#6
Collegium Pharmaceutical, Inc.
COLL
Collegium Pharmaceutical, Inc.
357#7
Beta Bionics, Inc.
BBNX
Beta Bionics, Inc.
352
Source: /stock-peers + /profile.fullTimeEmployees · Click row → /employees · Sorted by headcount · AMPH peer comparison

About AMPH employees

AMPH Employees · Headcount

Amphastar Pharmaceuticals, Inc. (AMPH) employee data is sourced from the annual SEC 10-K filing. As of 2025, Amphastar Pharmaceuticals, Inc. had 1,976 full-time employees globally. Full-time employees only. Global consolidated headcount.

Amphastar Pharmaceuticals, Inc. employs 1,976 full-time employees as of the latest filing within the Drug Manufacturers - Specialty & Generic industry. Revenue per employee stands at $364,315, reflecting the company's operational efficiency.

Amphastar Pharmaceuticals, Inc.'s workforce decreased by 52 (2.56%) in 2025 compared to the prior fiscal year. The historical trend reflects the company's expansion and contraction cycles.

Amphastar Pharmaceuticals, Inc.'s revenue per employee of $364,315 positions it among the notable performers in the Drug Manufacturers - Specialty & Generic sector for operational efficiency.

RevenueFinancial statementsNet incomeSEC filingsPrice historyForecast & ratingsOwnershipEarnings

Frequently Asked Questions

AMPH Employees · 5 questions

As of the latest SEC 10-K filing (2025), Amphastar Pharmaceuticals, Inc. had 1,976 full-time employees globally. This figure is sourced from the company's mandatory annual disclosure to the SEC.

Amphastar Pharmaceuticals, Inc. employee counthow many employees does Amphastar Pharmaceuticals, Inc. haveAMPH total employees 2025

▸ Data source: FMP /historical-employee-count · SEC EDGAR annual filings · As reported · Global consolidated headcount · As of 2026-02-26