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AMPHNasdaqPharmaceutical PreparationsFiscal year ends December 31

Amphastar Pharmaceuticals, Inc.

Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 6, 2026
$26.14+0.27 (+1.04%)

Close on Oct 19, 2026

Market cap
$1.16B
P/E (TTM)
15.4
Dividend yield
–

About Amphastar Pharmaceuticals

Pharmaceutical Preparations, SIC 2834

The company is a biopharmaceutical business that develops, manufactures, and commercializes injectable, inhalation, and intranasal products, as well as active pharmaceutical ingredients. Its commercial portfolio includes over twenty-five prescription drugs and an over-the-counter asthma inhaler, Primatene MIST. Key offerings comprise BAQSIMI nasal powder for severe hypoglycemia, generic glucagon, epinephrine, lidocaine, enoxaparin, naloxone, and insulin active pharmaceutical ingredients. It also develops biosimilar insulin candidates and proprietary therapeutics. The company sells its products primarily to healthcare institutions, including hospitals, clinics, long-term care facilities, and medical offices, as well as to retail pharmacies through wholesale distributors and group purchasing organizations.

The business operates internationally, distributing products such as BAQSIMI across the United States and twenty-six foreign markets. Its physical infrastructure encompasses sixty-nine owned or leased buildings spanning 2.5 million square feet across six locations in the United States, France, and China. Facilities are situated in Rancho Cucamonga and South El Monte, California; Canton, Massachusetts; Éragny-sur-Epte, France; and Nanjing, China. The provided text does not specify a corporate headquarters.

Summary of the business section of Amphastar Pharmaceuticals's latest annual report, written by StockData.

Company profile

Company

Legal name
Amphastar Pharmaceuticals, Inc.
Headquarters
Rancho Cucamonga, CA
Address
11570 Sixth Street 91730
Phone
(909) 980-9484
Employees
163, Dec 31, 2025
Industry
Pharmaceutical Preparations
Fiscal year ends
December 31
Auditor
Ernst& YoungLLP, Irvine, California

Stock & identifiers

Ticker
AMPH
Exchange
Nasdaq
Shares outstanding
43M, Jul 31, 2026
Public float
$632.56M, Jun 30, 2025
Filer category
Large accelerated filer
SEC CIK
1297184
CUSIP
03209R103
ISIN
US03209R1032
LEI
54930055TH0ZLSAQMJ38
EIN
33-0702205

Executives and directors

Officers and directors who filed ownership reports (Forms 3, 4, 5) in the last two years

NamePositionShares owned
William J. PetersCFO, EVP & TREASURER, Director168,707
Jack Y. ZhangCEO & CHIEF SCIENTIFIC OFFICER, Director4,235,177
Mary Z. LuoCOO, Chief Scientist, Chairman, Director4,014,083
Yakob LiawatidewiEVP CORP ADMIN CENTER, Director124,351
Rong ZhouSENIOR EVP, PRODUCTION CENTER278,871
Richard K. PrinsDirector29,625
Anthony T. PierceDirector7,886
Diane G. GerstDirector31,899
David Russell GaughDirector14,447
Howard LeeDirector159,350
Michael A. ZasloffDirector37,667
Gayle DeflinDirector19,057
Floyd F. PetersenDirector71,368

CEO pay and shareholder return

Pay versus performance table from the proxy statement

Fiscal yearCEO total payCEO pay actually paidOther executives (avg)Value of $100 investedPeer group
FY2025
Jack Y. Zhang
$8.31M$2.41M$2.96M$133$125
FY2024
Jack Y. Zhang
$7.73M-$7.63M$2.66M$185$93
FY2023
Jack Y. Zhang
$7.72M$28.91M$2.62M$308$94
FY2022
Jack Y. Zhang
$7.48M$12.89M$2.45M$139$90
FY2021
Jack Y. Zhang
$6.51M$8.83M$2.23M$116$100
FY2020
Jack Y. Zhang
$5.96M$6.95M$2.95M$104$126

“Actually paid” adjusts reported pay for changes in the value of equity awards. Shareholder return assumes $100 invested at the start of the measurement period, as disclosed by the company.

Employees

Headcount reported in annual reports

“As of December 31, 2025, we had 163 employees dedicated to research and development with expertise in areas such as pharmaceutical formulation, process development, toxicity studies, analytical, synthetic, and physical chemistry, drug delivery, device development, equipment and engineering, clinical research statistical analysis, etc.”

Corporate history

Events identified from SEC filings