Amphastar Pharmaceuticals, Inc.
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
| Name | Position | Shares owned |
|---|---|---|
| William J. Peters | CFO, EVP & TREASURER, Director | 168,707 |
| Jack Y. Zhang | CEO & CHIEF SCIENTIFIC OFFICER, Director | 4,235,177 |
| Mary Z. Luo | COO, Chief Scientist, Chairman, Director | 4,014,083 |
| Yakob Liawatidewi | EVP CORP ADMIN CENTER, Director | 124,351 |
| Rong Zhou | SENIOR EVP, PRODUCTION CENTER | 278,871 |
| Richard K. Prins | Director | 29,625 |
| Anthony T. Pierce | Director | 7,886 |
| Diane G. Gerst | Director | 31,899 |
| David Russell Gaugh | Director | 14,447 |
| Howard Lee | Director | 159,350 |
| Michael A. Zasloff | Director | 37,667 |
| Gayle Deflin | Director | 19,057 |
| Floyd F. Petersen | Director | 71,368 |
CEO pay and shareholder return
Pay versus performance table from the proxy statement
| Fiscal year | CEO total pay | CEO pay actually paid | Other executives (avg) | Value of $100 invested | Peer 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
| Date | Event | Details |
|---|---|---|
| Jun 30, 2023 | Acquisition / sale | Completion of acquisition or disposition of assets (8-K Item 2.01) |
| Aug 20, 2021 | Acquisition / sale | Completion of acquisition or disposition of assets (8-K Item 2.01) |
| May 7, 2021 | Acquisition / sale | Completion of acquisition or disposition of assets (8-K Item 2.01) |
| Jul 9, 2018 | Acquisition / sale | Completion of acquisition or disposition of assets (8-K Item 2.01) |
| Jun 18, 2014 | Listing | Registration of securities on an exchange (Form 8-A) |