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Amphastar Pharmaceuticals, Inc. (AMPH)

NASDAQ: AMPH · Real-Time Price · USD
25.54-0.37 (-1.43%)
 
Market Cap1.13B-1.1%
Revenue (ttm)n/a+1.4%
Net Incomen/a-41.7%
EPSn/a-36.7%
Shares Out44.09M
PE Ration/a
Forward PEn/a
Dividendn/a
Ex-Dividend Daten/a
Volume774,800
Open25.91
Previous Close25.91
Day's Range25.29 - 26.17
52-Week Range16.65 - 29.52
Betan/a
AnalystsHold
Price Target21.25(-16.80%)
Earnings Daten/a
Insider Score
––Not scored
AMPH Insider Score

Insiders filed in the last 90 days, but none of those trades qualified for scoring — round-trip buys and filings whose price is far off the market are excluded.

About AMPH

Amphastar Pharmaceuticals, Inc., a bio-pharmaceutical company, develops, manufactures, markets, and sells generic and proprietary injectable, inhalation, and intranasal products in the United States, China, and France. It offers BAQSIMI, a dry nasal spray used in an emergency for the treatment of severe hypoglycemia; Primatene MIST, an epinephrine inhalation product for the temporary relief of mild symptoms of intermittent asthma; Glucagon for injection emergency kit; Enoxaparin, an injectable form of low molecular weight heparin for the prevention and treatment of deep vein thrombosis; and REXTOVY and Naloxone for opioid overdose. The company also provides Cortrosyn, a lyophilized power for use as a diagnostic agent in the screening of patients with adrenocortical insufficiency; Amphadase, a bovine-sourced hyaluronidase injection; Epinephrine injection for allergic reactions; Lidocaine jelly, an anesthetic product for urological procedures; Lidocaine topical solution for various procedures; Phytonadione injection, a vitamin K1 injection for newborn babies; and emergency syringe products, including atropine, calcium chloride, dextrose, epinephrine, lidocaine, and sodium bicarbonate. In addition, it offers Albuterol sulfate inhalation aerosol for the treatment or prevention of bronchospasm; Iron sucrose injection, an iron replacement product for the treatment of iron deficiency anemia in patients with chronic kidney disease; Teriparatide injection for managing daily osteoporosis therapy; and Ipratropium Bromide HFA inhalation aerosol, an anticholinergic indicated for the maintenance treatment of bronchospasm associated with chronic obstructive pulmonary disease. Further, the company provides active pharmaceutical ingredient (API) products, such as Recombinant Human Insulin and porcine insulin API. The company was founded in 1996 and is headquartered in Rancho Cucamonga, California.

Address
11570 6th Street, Rancho Cucamonga, CA, 91730, United States
Market Cap
1.13 billion
Employees
1,976
Industrial Classification
Drug Manufacturers - Specialty & Generic

What Are Insiders Doing?

Open-market buy / sell balanceNet Selling
Sold
$763.92K
Bought
$0

View the trades behind this meter — each links to its SEC Form 4 →

Open-market Form 4 purchases (code P) vs sales (code S) on file for this company. Grants, option exercises and tax withholdings are excluded. Informational only.

1 Day
-1.43%
5 Days
-1.05%
1 Month
+11.38%
6 Months
+25.20%
1 Year
-1.12%

$AMPH stock is featured in our Insider Score Rankings, and Insider Trades datasets.

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Recently reported changes in AMPH holdings by institutional investors

Scanning latest 13F filings…

Latest 0 13F filings · Source: SEC EDGAR

View all institutional owners →

Insider Trading

Quarterly net insider trading by AMPH's directors and management

Net Shares Purchased by Insiders−40k−20k02025Q42026Q12026Q22026Q32026Q4

Source: SEC EDGAR (Form 4)

Corporate Lobbying

AMPH Estimated quarterly lobbying spending

Source: U.S. Senate LDA

AMPH Revenue by Segment or Geography

AMPH's latest filing doesn't break out revenue by segment.

As of: Q2 2026 (Jun 30, 2026) · Source: SEC EDGAR (10-Q)

U.S. Patents

New AMPH patent grants

Loading patent grants…

Source: USPTO Open Data Portal

Government Contracts

Estimated quarterly amount awarded to AMPH from public contracts

Source: USAspending.gov

Top ETF Holders

ETFs with the largest estimated holdings in AMPH

ETFEst. Holding Size
AVUVAvantis U.S. Small Cap Value ETF$34.29M
VTIVanguard Morningstar Total Stock Market ETF$23.78M
DFSVU.S. Small Cap Value Portfolio ETF Class Shares$22.31M
IWMiShares Russell 2000 ETF$21.93M
DFATDimensional - US Targeted Value ETF$13.76M
VXFVanguard Extended Market ETF$8.92M

Estimated from each fund’s disclosed top holdings × AUM

AMPH Insider Score

Our composite score: insider buying, sector, volume, tone & dilution

Members only

The live Insider Score for AMPH is included with Insider Access.

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Bull Case vs Bear Case

AI-generated from AMPH’s recent data — informational, not investment advice

Generating analysis…

Insider Score

Our 0–100 Insider Score and the signals behind it.

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Recent Insider Activity

Buys
0
Sells
5
Buy Value
$0
Distinct Buyers
0

Frequently Asked Questions

Disclaimer — Informational only — not investment advice. Insider transaction data is sourced from SEC Form 4 filings; market data from public feeds and may be delayed. The Insider Score is a proprietary score for research purposes and does not predict future performance. Always do your own research.