Amphastar Pharmaceuticals, Inc. (AMPH)
Nasdaq: AMPH · Pharmaceutical Preparations · Rancho Cucamonga, CA · filing with the SEC since 2005
Grade6.5
◀ Past 7.8● Present 7.4▶ Future 4.1
Filings
203 filings since 2017 beside 551 insider forms · Large accelerated filer · read from EDGAR on Nov 13, 2026Due nextLarge accelerated filer
10-K
Annual report for the fiscal year ending Dec 31, 2026Large accelerated filers have 60 days after the fiscal year ends.
by Mar 1, 2027
10-Q
Quarterly report for the quarter ending Mar 31, 2027Large accelerated filers have 40 days after the quarter ends; quarter ends are taken to the month end.
by May 10, 2027
A deadline is the latest date the SEC's rules allow for its filer category. It is not a forecast of the day the company files. Last time, the results release (8-K item 2.02) came 36 days after the quarter ended. The proxy statement was last filed Apr 13, 2026.
Filings a yearinsider forms included
67707875103867257
2026 counts to Nov 13, 2026.
Officer or director change (8-K item 5.02): 4 times in the last 36 months, the newest Jul 13, 2026.
Insider forms (3, 4, 5 and 144) are counted each year but not listed here; the people and their trades are on the Ownership tab.
FiledFormWhat it is, in plain wordsPeriodAsk
Jan 12, 2026
8-K items 1.01, 7.01, 9.01
Major agreement signed; Investor disclosure (Regulation FD) · Current report
Jan 6, 2026
Aug 12, 2025
8-K items 1.01, 7.01, 9.01
Major agreement signed; Investor disclosure (Regulation FD) · Current report
Aug 8, 2025
Jun 4, 2025
8-K items 5.03, 5.07, 9.01
Charter, bylaw or fiscal-year change; Shareholder vote · Current report
Jun 2, 2025
40 of 203 shown
Every row opens the filing on EDGAR. The plain words are the site's own for each form and each 8-K item; the complete history, insider forms included, is on EDGAR.