Amphastar Pharmaceuticals AMPH SEC Filings

NASDAQ AMPH
$25.89 -0.25 (-0.96%)
As of: Oct 20, 2026 · 3:54 PM EDT
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Amphastar Pharmaceuticals, Inc. (AMPH) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
14Insider Transaction0001263136-26-000014Sep 23, 2026 10:02 PM
2144Insider Transaction0001969223-26-001034Sep 21, 2026 10:37 PM
34Insider Transaction0001645326-26-000014Sep 17, 2026 10:19 PM
44Insider Transaction0001645326-26-000012Sep 3, 2026 11:42 PM
5144Insider Transaction0001969223-26-000982Sep 1, 2026 8:25 PM
6144Insider Transaction0001969223-26-000926Aug 18, 2026 9:56 PM
74Insider Transaction0001047579-26-000005Aug 12, 2026 10:14 PM
84Insider Transaction0001263136-26-000012Aug 11, 2026 8:57 PM
9144Insider Transaction0001969223-26-000880Aug 11, 2026 3:53 PM
10144Insider Transaction0001969223-26-000860Aug 7, 2026 8:09 PM
1110-QQuarterly & Annual Report0001297184-26-000047Aug 6, 2026 8:50 PM
128-KCurrent Report0001297184-26-000045Aug 6, 2026 8:32 PM
13SCHEDULE 13GBeneficial Ownership Report0000354204-26-000782Jul 14, 2026 5:27 PM
144Insider Transaction0002141303-26-000005Jul 13, 2026 11:38 PM
153Insider Transaction0002141303-26-000003Jul 13, 2026 11:36 PM
168-KCurrent Report0001104659-26-082772Jul 13, 2026 10:01 AM
178-KCurrent Report0001297184-26-000041Jul 8, 2026 12:03 AM
184Insider Transaction0001047579-26-000003Jun 3, 2026 1:22 AM
194Insider Transaction0001379941-26-000003Jun 3, 2026 1:20 AM
204Insider Transaction0001033511-26-000003Jun 3, 2026 12:34 AM
214Insider Transaction0001611283-26-000003Jun 3, 2026 12:33 AM
224Insider Transaction0002075974-26-000003Jun 3, 2026 12:31 AM
234Insider Transaction0001866024-26-000003Jun 3, 2026 12:29 AM
248-KCurrent Report0001297184-26-000038Jun 3, 2026 8:15 PM
2510-QQuarterly & Annual Report0001297184-26-000033May 7, 2026 8:48 PM
2610-QQuarterly & Annual Report0001297184-26-000033May 7, 2026 8:48 PM
2710-QQuarterly & Annual Report0001297184-26-000033May 7, 2026 8:48 PM
288-KCurrent Report0001297184-26-000031May 7, 2026 8:22 PM
298-KCurrent Report0001297184-26-000031May 7, 2026 8:22 PM
308-KCurrent Report0001297184-26-000031May 7, 2026 8:22 PM
31ARSOthers0001297184-26-000027Apr 13, 2026 8:41 PM
32DEFA14AOthers0001297184-26-000025Apr 13, 2026 8:29 PM
33DEF 14AOthers0001297184-26-000023Apr 13, 2026 8:18 PM
34SCHEDULE 13GBeneficial Ownership Report0000102909-26-000687Mar 26, 2026 7:46 PM
354Insider Transaction0001743927-26-000010Mar 17, 2026 12:17 AM
364Insider Transaction0001743927-26-000010Mar 17, 2026 12:17 AM
374Insider Transaction0001743927-26-000010Mar 17, 2026 12:17 AM
384Insider Transaction0001645326-26-000010Mar 17, 2026 10:16 PM
394Insider Transaction0001645326-26-000010Mar 17, 2026 10:16 PM
404Insider Transaction0001645326-26-000010Mar 17, 2026 10:16 PM
414Insider Transaction0001263136-26-000010Mar 17, 2026 10:14 PM
424Insider Transaction0001263136-26-000010Mar 17, 2026 10:14 PM
434Insider Transaction0001263136-26-000010Mar 17, 2026 10:14 PM
444Insider Transaction0000889740-26-000007Mar 17, 2026 10:12 PM
454Insider Transaction0000889740-26-000007Mar 17, 2026 10:12 PM
464Insider Transaction0000889740-26-000007Mar 17, 2026 10:12 PM
478-KCurrent Report0001104659-26-027814Mar 16, 2026 10:00 AM
484Insider Transaction0001263136-26-000008Mar 11, 2026 1:29 AM
494Insider Transaction0001645326-26-000008Mar 11, 2026 12:15 AM
504Insider Transaction0001743927-26-000008Mar 11, 2026 10:26 PM
...

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