Amphastar Pharmaceuticals, Inc.

AMPHNasdaqCIK 1297184HealthcareFiscal year ends Dec 31

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Reports and events: 172 filings

Newest first, by EDGAR acceptance time (Eastern). Each filing’s page lists its documents on sec.gov and, for 10-K and 10-Q reports, the extracted sections.

What the forms are: 10-K, 10-Q, 8-K, Form 4, DEF 14A, Schedule 13D, Schedule 13G, amendments, accession numbers.

Amphastar Pharmaceuticals, Inc., Reports and events
Filed	Form	What it is	Accession number
2023-05-0916:19 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001297184-23-000046
2023-04-2407:17 ET	8-K	1.01 Entry into a material agreement; 2.03 New direct financial obligation; 8.01 Other events; 9.01 Financial statements and exhibits	0001558370-23-006469
2023-04-1416:09 ET	DEF 14A	Proxy statement	0001297184-23-000033
2023-03-1016:08 ET	8-K	1.01 Entry into a material agreement	0001297184-23-000026
2023-03-0116:11 ET	10-K	Annual reportPeriod 2022-12-31	0001297184-23-000019
2023-02-2816:21 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001297184-23-000012
2023-02-2416:20 ET	8-K	5.03 Amendment to articles or bylaws; 9.01 Financial statements and exhibits	0001297184-23-000007
2022-11-1816:17 ET	8-K	1.01 Entry into a material agreement; 9.01 Financial statements and exhibits	0001297184-22-000060
2022-11-0819:44 ET	10-Q	Quarterly reportPeriod 2022-09-30	0001297184-22-000056
2022-11-0716:20 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001297184-22-000053
2022-08-0916:20 ET	8-K	5.02 Departure or appointment of officers or directors	0001297184-22-000048
2022-08-0918:13 ET	10-Q	Quarterly reportPeriod 2022-06-30	0001297184-22-000044
2022-08-0816:23 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001297184-22-000041
2022-07-0816:25 ET	8-K	1.01 Entry into a material agreement	0001297184-22-000036
2022-06-1316:17 ET	8-K	5.07 Shareholder vote results	0001297184-22-000032
2022-05-1018:04 ET	10-Q	Quarterly reportPeriod 2022-03-31	0001297184-22-000029
2022-05-0916:22 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001297184-22-000026
2022-04-2216:13 ET	8-K	1.01 Entry into a material agreement	0001297184-22-000021
2022-04-1416:27 ET	DEF 14A	Proxy statementPeriod 2022-06-10	0001297184-22-000015
2022-03-1116:13 ET	10-K	Annual reportPeriod 2021-12-31	0001297184-22-000007
2022-03-1016:17 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001297184-22-000003
2021-11-0918:33 ET	10-Q	Quarterly reportPeriod 2021-09-30	0001297184-21-000064
2021-11-0816:32 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001297184-21-000062
2021-08-2316:11 ET	8-K	5.02 Departure or appointment of officers or directors	0001297184-21-000057
2021-08-2016:09 ET	8-K	1.01 Entry into a material agreement; 2.01 Completion of an acquisition or disposition; 5.02 Departure or appointment of officers or directors	0001297184-21-000054
2021-08-1016:10 ET	8-K	5.02 Departure or appointment of officers or directors	0001297184-21-000051
2021-08-0916:36 ET	10-Q	Quarterly reportPeriod 2021-06-30	0001297184-21-000048
2021-08-0916:25 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001297184-21-000046
2021-08-0918:37 ET	8-K	1.01 Entry into a material agreement; 1.02 Termination of a material agreement; 2.03 New direct financial obligation	0001297184-21-000041
2021-06-0816:09 ET	8-K	5.07 Shareholder vote results	0001297184-21-000037
2021-05-0716:26 ET	10-Q	Quarterly reportPeriod 2021-03-31	0001297184-21-000031
2021-05-0716:18 ET	8-K	1.01 Entry into a material agreement; 2.01 Completion of an acquisition or disposition; 5.02 Departure or appointment of officers or directors; 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits	0001297184-21-000029
2021-05-0616:19 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001297184-21-000022
2021-04-1416:08 ET	DEF 14A	Proxy statementPeriod 2021-06-07	0001297184-21-000015
2021-03-1516:26 ET	10-K	Annual reportPeriod 2020-12-31	0001297184-21-000008
2021-03-1516:14 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001297184-21-000006
2021-01-1216:05 ET	8-K	7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits	0001558370-21-000171
2020-11-0616:18 ET	8-K	5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits	0001297184-20-000058
2020-11-0616:11 ET	10-Q	Quarterly reportPeriod 2020-09-30	0001297184-20-000056
2020-11-0607:00 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001558370-20-013013
2020-08-1016:07 ET	8-K/A	5.07 Shareholder vote results	0001297184-20-000050
2020-08-0718:32 ET	10-Q	Quarterly reportPeriod 2020-06-30	0001297184-20-000047
2020-08-0616:11 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001297184-20-000035
2020-06-0916:10 ET	8-K	5.07 Shareholder vote results	0001297184-20-000031
2020-05-1116:13 ET	10-Q	Quarterly reportPeriod 2020-03-31	0001297184-20-000027
2020-05-0716:20 ET	8-K	2.02 Results of operations; 9.01 Financial statements and exhibits	0001297184-20-000023
2020-04-1516:30 ET	DEF 14A	Proxy statementPeriod 2020-06-08	0001297184-20-000018
2020-04-1406:39 ET	8-K/A	5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits	0001558370-20-003855
2020-04-1317:20 ET	8-K	5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits	0001297184-20-000013
2020-03-1616:49 ET	10-K	Annual reportPeriod 2019-12-31	0001297184-20-000007

Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Nov 6, 2026, 17:01 ET. Listed shows no prices and gives no investment advice.