Amphastar Pharmaceuticals Inc
NASDAQ:AMPH
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During the last 3 months Amphastar Pharmaceuticals Inc insiders have not bought any shares, and have not sold any shares. The stock price has dropped by 23% over this period ( loading = false, 5000)" href="https://www.alphaspread.com/comparison/nasdaq/amph/vs/indx/gspc">open performance analysis).
The last transaction was made on
Dec 17, 2025
by
Zhou Rong
, who
sold
256.4k USD
worth of
AMPH shares.
During the last 3 months Amphastar Pharmaceuticals Inc insiders have not bought any shares, and have not sold any shares. The stock price has dropped by 23% over this period ( loading = false, 5000)" href="https://www.alphaspread.com/comparison/nasdaq/amph/vs/indx/gspc">open performance analysis).
The last transaction was made on
Dec 17, 2025
by
Zhou Rong
, who
sold
256.4k USD
worth of
AMPH shares.
Amphastar Pharmaceuticals Inc
Glance View
Amphastar Pharmaceuticals Inc., established in the heart of Rancho Cucamonga, California, has carved out a significant niche in the pharmaceuticals industry with its diverse portfolio centered on developing, manufacturing, and marketing generic and proprietary injectable and inhalation products. Emerging from its storied beginnings in the mid-1990s, the company’s pragmatic approach to pharmaceutical innovation emphasizes affordability and accessibility. Through strategic acquisitions and a robust in-house research and development team, Amphastar has consistently expanded its product lines, which include critical care, anti-infective, hormonal, and neuromuscular medications, seamlessly marrying clinical necessity with cost efficiency to serve both the domestic U.S. market and an expanding international clientele. Key to Amphastar's business model is its vertically integrated production process, which enables it to exercise stringent control over quality while simultaneously optimizing cost-effectiveness. The company's financial engine is fueled by its generic drug segment, where it capitalizes on the expiration of branded drug patents. By swiftly introducing generic counterparts, Amphastar taps into established demand, thus ensuring steady revenue streams. Additionally, the company's proprietary products, developed through committed R&D efforts, serve to differentiate its offerings in an otherwise commoditized sector, enabling premium pricing and fostering a competitive edge. This clever blend of generic and proprietary product strategy, paired with operational efficiency, underscores Amphastar's role as a formidable player in the pharmaceuticals market, adeptly navigating the complex landscape of regulatory compliance and healthcare trends.
What is Insider Trading?
Insider trading refers to the buying or selling of a company’s stock by individuals with access to non-public, material information about the company.
While legal insider trading occurs when insiders follow disclosure rules, illegal insider trading involves trading based on confidential information and is prohibited by law.
Why is Insider Trading Important?
It isn't a coincidence that corporate executives seem to always buy at the right times. After all, they have access to every bit of company information you could ever want.
However, the fact that company executives have unique insights doesn't mean that individual investors are always left in the dark. Insider trading data is out there for all who want to use it.
Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise.