# Amphastar Pharmaceuticals, Inc. (AMPH) Stock Price, News & Catalysts
Canonical URL: https://biopharmsignal.com/company/AMPH
## Company Profile
- Ticker: AMPH
- Exchange: NASDAQ
- Sector: Pharmaceuticals
- Location: United States
- Tags: Pharmaceuticals, CNS, Endocrinology
## Stock Data
- Close: 23.18 USD
- Market cap: 813514355.55 USD
- Last updated: 2026-09-04
## Business Overview
Amphastar Pharmaceuticals is a specialty pharmaceutical company with injectable, inhalation, and other complex generic products.
## Why The Stock Is Moving

As of Sep 4, 2026, AMPH closed down 2.77% at $23.18. No new same-company headline was identified in the current news window.

## Geographic Base

Headquartered in the United States and listed on NASDAQ, Amphastar sits in specialty pharma and generics.

## Business Model

The company relies on product launches, manufacturing execution, and a mix of injectable and respiratory products.

## Landscape Position

Amphastar is a specialty-manufacturing story whose movement depends on product mix and execution rather than biotech catalysts.

## Future Catalysts

- Amphastar's catalysts are Primatene Mist, injectable product execution, and the broader specialty-generic mix. The company tends to improve when manufacturing and product mix stay disciplined.

## Recent News
- 2021-06-15 20:05 EST — [Amphastar Pharmaceuticals to Present at the Raymond James Human Health Innovation Conference](https://biopharmsignal.com/news/AMPH/amphastar-pharmaceuticals-to-present-at-the-raymond-james-human-health-innovatio-2fbed37a) — Source: Amphastar Pharmaceuticals, Inc.
- 2021-05-27 10:00 EST — [Amphastar Pharmaceuticals to Present at the Jefferies Virtual Healthcare Conference](https://biopharmsignal.com/news/AMPH/amphastar-pharmaceuticals-to-present-at-the-jefferies-virtual-healthcare-confere-f2815aa9) — Source: Amphastar Pharmaceuticals, Inc.
- 2021-05-07 20:05 EST — [Amphastar Announces Buyback of 26% of the Equity in its ANP Subsidiary and Spin-off its Hanxin Subsidiary](https://biopharmsignal.com/news/AMPH/amphastar-announces-buyback-of-26-of-the-equity-in-its-anp-subsidiary-and-spin-o-ef8ccd51) — Source: Amphastar Pharmaceuticals, Inc.
- 2021-05-06 20:05 EST — [Amphastar Pharmaceuticals Reports Financial Results for the Three Months Ended March 31, 2021](https://biopharmsignal.com/news/AMPH/amphastar-pharmaceuticals-reports-financial-results-for-the-three-months-ended-m-036bf397) — Source: Amphastar Pharmaceuticals, Inc.
- 2021-05-03 10:00 EST — [Amphastar Pharmaceuticals Receives FDA Approval for Morphine Sulfate Injection](https://biopharmsignal.com/news/AMPH/amphastar-pharmaceuticals-receives-fda-approval-for-morphine-sulfate-injection-3124ddbf) — Source: Amphastar Pharmaceuticals, Inc.