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Mailing Address 11570 SIXTH STREET RANCHO CUCAMONGA CA 91730
Business Address 11570 SIXTH STREET RANCHO CUCAMONGA CA 91730 909-980-9484
Amphastar Pharmaceuticals, Inc. CIK#: 0001297184 (see all company filings)

SIC: 2834 - PHARMACEUTICAL PREPARATIONS
State location: CA | Fiscal Year End: 1231
(CF Office: 03 Life Sciences)
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Items 1 - 40  0001297184 Filings RSS Feed
Filings Format Description Filing Date File/Film Number
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001297184-24-000033 (34 Act)  Size: 733 KB
2024-05-08 001-36509
24926385
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001297184-24-000029 (34 Act)  Size: 24 KB
2024-04-19 001-36509
24858050
ARS  Documents Annual Report to Security Holders
Acc-no: 0001297184-24-000025 (34 Act)  Size: 3 MB
2024-04-12 001-36509
24841745
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001297184-24-000022 (34 Act)  Size: 598 KB
2024-04-12 001-36509
24841615
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001297184-24-000019 (34 Act)  Size: 3 MB
2024-04-12 001-36509
24841507
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001623632-24-000361 (34 Act)  Size: 433 KB
2024-03-06 005-88204
24724651
S-8  Documents Securities to be offered to employees in employee benefit plans
Acc-no: 0001297184-24-000012 (33 Act)  Size: 162 KB
2024-02-29 333-277537
24704719
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001297184-24-000009 (34 Act)  Size: 17 MB
2024-02-29 001-36509
24703748
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001297184-24-000004 (34 Act)  Size: 1 MB
2024-02-28 001-36509
24696160
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001104659-24-020278 (34 Act)  Size: 13 KB
2024-02-13 005-88204
24627376
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001193125-24-030344 (34 Act)  Size: 60 KB
2024-02-09 005-88204
24616234
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001086364-24-001477 (34 Act)  Size: 13 KB
2024-01-23 005-88204
24551410
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001623632-24-000024 (34 Act)  Size: 434 KB
2024-01-17 005-88204
24538003
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001297184-23-000082 (34 Act)  Size: 13 MB
2023-11-08 001-36509
231388259
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001297184-23-000079 (34 Act)  Size: 905 KB
2023-11-08 001-36509
231388020
8-K  Documents   Interactive Data Current report, items 1.01, 2.03, 3.02, 8.01, and 9.01
Acc-no: 0001297184-23-000074 (34 Act)  Size: 1 MB
2023-09-15 001-36509
231258869
8-K/A  Documents   Interactive Data [Amend] Current report, item 9.01
Acc-no: 0001297184-23-000070 (34 Act)  Size: 1 MB
2023-08-16 001-36509
231179130
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001297184-23-000066 (34 Act)  Size: 16 MB
2023-08-09 001-36509
231152854
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001297184-23-000063 (34 Act)  Size: 867 KB
2023-08-08 001-36509
231151610
8-K  Documents   Interactive Data Current report, items 1.01, 2.01, 2.03, 8.01, and 9.01
Acc-no: 0001297184-23-000057 (34 Act)  Size: 257 KB
2023-06-30 001-36509
231062043
8-K  Documents   Interactive Data Current report, item 5.07
Acc-no: 0001297184-23-000053 (34 Act)  Size: 178 KB
2023-06-06 001-36509
23994328
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001297184-23-000049 (34 Act)  Size: 9 MB
2023-05-09 001-36509
23903038
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001297184-23-000046 (34 Act)  Size: 703 KB
2023-05-09 001-36509
23902341
8-K  Documents   Interactive Data Current report, items 1.01, 2.03, 8.01, and 9.01
Acc-no: 0001558370-23-006469 (34 Act)  Size: 278 KB
2023-04-24 001-36509
23837932
ARS  Documents Annual Report to Security Holders
Acc-no: 0001297184-23-000040 (34 Act)  Size: 2 MB
2023-04-14 001-36509
23821441
DEFA14A  Documents Additional definitive proxy soliciting materials and Rule 14(a)(12) material
Acc-no: 0001297184-23-000037 (34 Act)  Size: 580 KB
2023-04-14 001-36509
23821384
DEF 14A  Documents   Interactive Data Other definitive proxy statements
Acc-no: 0001297184-23-000033 (34 Act)  Size: 3 MB
2023-04-14 001-36509
23821247
8-K  Documents   Interactive Data Current report, item 1.01
Acc-no: 0001297184-23-000026 (34 Act)  Size: 170 KB
2023-03-10 001-36509
23723683
S-8  Documents Securities to be offered to employees in employee benefit plans
Acc-no: 0001297184-23-000022 (33 Act)  Size: 162 KB
2023-03-01 333-270180
23693996
10-K  Documents   Interactive Data Annual report [Section 13 and 15(d), not S-K Item 405]
Acc-no: 0001297184-23-000019 (34 Act)  Size: 16 MB
2023-03-01 001-36509
23693597
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001297184-23-000012 (34 Act)  Size: 1 MB
2023-02-28 001-36509
23685762
8-K  Documents   Interactive Data Current report, items 5.03 and 9.01
Acc-no: 0001297184-23-000007 (34 Act)  Size: 501 KB
2023-02-24 001-36509
23667630
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001104659-23-015300 (34 Act)  Size: 12 KB
2023-02-09 005-88204
23602400
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001623632-23-000205 (34 Act)  Size: 214 KB
2023-02-01 005-88204
23575000
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001104659-23-007522 (34 Act)  Size: 63 KB
2023-01-27 005-88204
23562817
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001306550-23-004054 (34 Act)  Size: 13 KB
2023-01-26 005-88204
23554244
SC 13G/A  Documents [Amend] Statement of acquisition of beneficial ownership by individuals
Acc-no: 0001306550-23-000633 (34 Act)  Size: 13 KB
2023-01-20 005-88204
23539218
8-K  Documents   Interactive Data Current report, items 1.01 and 9.01
Acc-no: 0001297184-22-000060 (34 Act)  Size: 650 KB
2022-11-18 001-36509
221402155
10-Q  Documents   Interactive Data Quarterly report [Sections 13 or 15(d)]
Acc-no: 0001297184-22-000056 (34 Act)  Size: 12 MB
2022-11-08 001-36509
221366888
8-K  Documents   Interactive Data Current report, items 2.02 and 9.01
Acc-no: 0001297184-22-000053 (34 Act)  Size: 935 KB
2022-11-07 001-36509
221365732