Amphastar Pharmaceuticals, Inc. — SC 13G/A Filings
22 SC 13G/A filings on record
This page lists all SC 13G/A filings submitted to the SEC by Amphastar Pharmaceuticals, Inc. (AMPH), sorted by most recent first. Each row links to the full filing on EdgarLookup. Amphastar Pharmaceuticals, Inc. has filed 22 SC 13G/A documents with the SEC since 2005. To view all SEC filings by Amphastar Pharmaceuticals, Inc., see the full filings list.
All
10-K
10-Q
144
3
3/A
4
4/A
424B4
8-A12B
8-K
8-K/A
ARS
CERTNAS
CORRESP
CT ORDER
DEF 14A
DEFA14A
DRS
DRS/A
DRSLTR
EFFECT
FWP
PRE 14A
REGDEX
RW
S-1
S-1/A
S-1MEF
S-3
S-8
SC 13G
SC 13G/A
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| SC 13G/A | SCHEDULE 13G/A | 0001104659-24-020278 | Feb 13, 2024 | — |
| SC 13G/A | SC 13G/A | 0001193125-24-030344 | Feb 9, 2024 | — |
| SC 13G/A | — | 0001086364-24-001477 | Jan 23, 2024 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-23-015300 | Feb 9, 2023 | — |
| SC 13G/A | SC 13G/A | 0001104659-23-007522 | Jan 27, 2023 | — |
| SC 13G/A | — | 0001306550-23-004054 | Jan 26, 2023 | — |
| SC 13G/A | — | 0001306550-23-000633 | Jan 20, 2023 | — |
| SC 13G/A | SC 13G/A | 0001104659-22-020462 | Feb 11, 2022 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-22-016476 | Feb 9, 2022 | — |
| SC 13G/A | — | 0000834237-22-003189 | Jan 28, 2022 | — |
| SC 13G/A | SC 13G/A | 0001104659-21-021973 | Feb 12, 2021 | — |
| SC 13G/A | SCHEDULE 13G/A | 0001104659-21-017435 | Feb 10, 2021 | — |
| SC 13G/A | — | 0000834237-21-001378 | Jan 26, 2021 | — |
| SC 13G/A | SC 13G/A | 0001104659-20-020560 | Feb 14, 2020 | — |
| SC 13G/A | — | 0000834237-20-001591 | Feb 4, 2020 | — |
| SC 13G/A | SC 13G/A | 0001104659-19-007911 | Feb 13, 2019 | — |
| SC 13G/A | — | 0000215457-19-001024 | Jan 24, 2019 | — |
| SC 13G/A | SC 13G/A | 0001104659-18-008050 | Feb 9, 2018 | — |
| SC 13G/A | — | 0000215457-18-001288 | Jan 19, 2018 | — |
| SC 13G/A | SC 13G AMENDMENT NO. 2 | 0001193125-17-038664 | Feb 13, 2017 | — |
| SC 13G/A | SC 13G AMENDMENT NO. 1 | 0001193125-16-463686 | Feb 16, 2016 | — |
| SC 13G/A | — | 0000919574-15-002024 | Feb 17, 2015 | — |