Amphastar Pharmaceuticals, Inc. SEC filings AMPH

Amphastar Pharmaceuticals, Inc. has 954 filings in SEC EDGAR's recent list, going back to Feb 11, 2005. Its latest annual report, Form ARS, was filed on Apr 13, 2026 for the period ended Dec 31, 2025. The latest quarterly report (Form 10-Q) was filed on Aug 6, 2026, covering the quarter ended Jun 30, 2026. The most recent current report (Form 8-K) was filed on Aug 6, 2026 (results of operations). The company's fiscal year ends on December 31.

Form Description Filed Period
ARS Annual report to shareholders Apr 13, 2026 Dec 31, 2025
10-K Annual report Feb 26, 2026 Dec 31, 2025
ARS Annual report to shareholders Apr 14, 2025 Dec 31, 2024
10-K Annual report Mar 3, 2025 Dec 31, 2024
ARS Annual report to shareholders Apr 12, 2024 Dec 31, 2023
10-K Annual report Feb 29, 2024 Dec 31, 2023
ARS Annual report to shareholders Apr 14, 2023 Dec 31, 2022
10-K Annual report Mar 1, 2023 Dec 31, 2022
10-K Annual report Mar 11, 2022 Dec 31, 2021
10-K Annual report Mar 15, 2021 Dec 31, 2020
10-K Annual report Mar 16, 2020 Dec 31, 2019
10-K Annual report Mar 15, 2019 Dec 31, 2018
10-K Annual report Mar 14, 2018 Dec 31, 2017
10-K Annual report Mar 15, 2017 Dec 31, 2016
10-K Annual report Mar 15, 2016 Dec 31, 2015
ARS Annual report to shareholders Apr 9, 2015 Dec 31, 2014
10-K Annual report Mar 26, 2015 Dec 31, 2014

Showing 17 filings. Main filings leave out insider and ownership forms such as Form 4; choose a type above to see them. Each form opens on SEC.gov. Older filings are on SEC EDGAR.

New to this? Read What Are SEC Filings? 10-K, 10-Q, 8-K and Other Forms Explained.

Company profile

Industry
Pharmaceutical Preparations (SIC 2834)
Listed as
AMPH (Nasdaq)
Fiscal year ends
December 31
Headquarters
Rancho Cucamonga, CA
SEC filer status
Large accelerated filer
SEC CIK
1297184

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Source: SEC EDGAR filings. This is company-reported data, not investment advice.