secwatch / observer
8-K filed March 6, 2026, 6:59 PM ET ticker AMPH CIK 0001297184
other material confidence high sentiment neutral materiality 0.25

Amphastar enters supply agreement with related party Letop, amends contract with Hanxin

Amphastar Pharmaceuticals, Inc.

Key facts

Extracted from this filing and checked against the source text.

Material Agreements SEC 8-K Item 1.01/1.02 confidence 0.9

Amphastar Pharmaceuticals, Inc. entered into Supply Agreement with Nanjing Letop Biotechnology Co., Ltd. (effective 2026-03-03).

Action
entry
Agreement
supply
Counterparty
Nanjing Letop Biotechnology Co., Ltd.
Effective
2026-03-03
Exact text from the filing
On March 3, 2026, (the “Effective Date”), Amphastar Nanjing Pharmaceuticals, Inc. (“ANP”), the Chinese subsidiary of Amphastar Pharmaceuticals, Inc. (“Amphastar” or, the “Company”), entered into a supply agreement (the “Supply Agreement”) with Nanjing Letop Biotechnology Co., Ltd. (“Letop”).
View on SEC.gov
Material Agreements SEC 8-K Item 1.01/1.02 confidence 0.9

Amphastar Pharmaceuticals, Inc. amended Contract Research Amendment with Nanjing Hanxin Pharmaceutical Technology Co., Ltd. valued at approximately $0.6 million (effective 2026-03-03).

Action
amendment
Agreement
collaboration
Counterparty
Nanjing Hanxin Pharmaceutical Technology Co., Ltd.
Value
approximately $0.6 million
Effective
2026-03-03
Exact text from the filing
On March 3, 2026 (the “Effective Date”), Amphastar Pharmaceuticals, Inc (“Amphastar” or, the “Company”) and Nanjing Hanxin Pharmaceutical Technology Co., Ltd. (“Hanxin”) entered into an amendment (the “Contract Research Amendment”) to the Contract Research Agreement (the “Contract Research Agreement”), originally entered into on September 15, 2025, as previously reported by the Company on a Current Report on Form 8-K filed on September 18, 2025.
View on SEC.gov

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Amphastar Pharmaceuticals, Inc. filing history →

Source: SEC EDGAR
accession 0001297184-26-000013
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