Amphastar Pharmaceuticals AMPH SEC Filings

NASDAQ AMPH
$29.38 +0.89 (+3.12%)
At close: Nov 9, 2026 · 4:00 PM EST
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
110-QQuarterly & Annual Report0001297184-26-000053Nov 5, 2026 4:40 PM
28-KCurrent Report0001297184-26-000051Nov 5, 2026 4:26 PM
3144Insider Transaction0001969223-26-001127Nov 4, 2026 9:09 PM
44Insider Transaction0001263136-26-000014Sep 23, 2026 10:02 PM
5144Insider Transaction0001969223-26-001034Sep 21, 2026 10:37 PM
64Insider Transaction0001645326-26-000014Sep 17, 2026 10:19 PM
74Insider Transaction0001645326-26-000012Sep 3, 2026 11:42 PM
8144Insider Transaction0001969223-26-000982Sep 1, 2026 8:25 PM
9144Insider Transaction0001969223-26-000926Aug 18, 2026 9:56 PM
104Insider Transaction0001047579-26-000005Aug 12, 2026 10:14 PM
114Insider Transaction0001263136-26-000012Aug 11, 2026 8:57 PM
12144Insider Transaction0001969223-26-000880Aug 11, 2026 3:53 PM
13144Insider Transaction0001969223-26-000860Aug 7, 2026 8:09 PM
1410-QQuarterly & Annual Report0001297184-26-000047Aug 6, 2026 8:50 PM
158-KCurrent Report0001297184-26-000045Aug 6, 2026 8:32 PM
16SCHEDULE 13GBeneficial Ownership Report0000354204-26-000782Jul 14, 2026 5:27 PM
174Insider Transaction0002141303-26-000005Jul 13, 2026 11:38 PM
183Insider Transaction0002141303-26-000003Jul 13, 2026 11:36 PM
198-KCurrent Report0001104659-26-082772Jul 13, 2026 10:01 AM
208-KCurrent Report0001297184-26-000041Jul 8, 2026 12:03 AM
214Insider Transaction0001047579-26-000003Jun 3, 2026 1:22 AM
224Insider Transaction0001379941-26-000003Jun 3, 2026 1:20 AM
234Insider Transaction0001033511-26-000003Jun 3, 2026 12:34 AM
244Insider Transaction0001611283-26-000003Jun 3, 2026 12:33 AM
254Insider Transaction0002075974-26-000003Jun 3, 2026 12:31 AM
264Insider Transaction0001866024-26-000003Jun 3, 2026 12:29 AM
278-KCurrent Report0001297184-26-000038Jun 3, 2026 8:15 PM
2810-QQuarterly & Annual Report0001297184-26-000033May 7, 2026 8:48 PM
298-KCurrent Report0001297184-26-000031May 7, 2026 8:22 PM
30ARSOthers0001297184-26-000027Apr 13, 2026 8:41 PM
31DEFA14AOthers0001297184-26-000025Apr 13, 2026 8:29 PM
32DEF 14AOthers0001297184-26-000023Apr 13, 2026 8:18 PM
33SCHEDULE 13GBeneficial Ownership Report0000102909-26-000687Mar 26, 2026 7:46 PM
344Insider Transaction0001743927-26-000010Mar 17, 2026 12:17 AM
354Insider Transaction0001645326-26-000010Mar 17, 2026 10:16 PM
364Insider Transaction0001263136-26-000010Mar 17, 2026 10:14 PM
374Insider Transaction0000889740-26-000007Mar 17, 2026 10:12 PM
388-KCurrent Report0001104659-26-027814Mar 16, 2026 10:00 AM
394Insider Transaction0001263136-26-000008Mar 11, 2026 1:29 AM
404Insider Transaction0001645326-26-000008Mar 11, 2026 12:15 AM
414Insider Transaction0001743927-26-000008Mar 11, 2026 10:26 PM
424Insider Transaction0000889740-26-000005Mar 11, 2026 9:58 PM
434Insider Transaction0001263136-26-000006Mar 10, 2026 1:03 AM
444Insider Transaction0001645326-26-000006Mar 10, 2026 9:44 PM
454Insider Transaction0001743927-26-000006Mar 10, 2026 9:42 PM
464Insider Transaction0000889740-26-000003Mar 10, 2026 9:41 PM
474Insider Transaction0001104659-26-024842Mar 6, 2026 2:58 AM
484Insider Transaction0001645326-26-000003Mar 6, 2026 2:06 AM
494Insider Transaction0001743927-26-000003Mar 6, 2026 2:04 AM
504Insider Transaction0001263136-26-000003Mar 6, 2026 2:02 AM
...

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