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Reporting owner

Zhou Rong

Reporting owner CIK 0001645326 · SENIOR EVP, PRODUCTION CENTER

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These transactions appear in filings associated with this reporting owner. Jointly reported quantities and amounts are unallocated; they are not this owner's individual purchases or total holdings. Names and roles reflect the relevant filing, and a reporting owner may be a person or an organization.

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Transaction timeline

Who reported an acquisition, and when the transaction occurred.

Reported acquisitions by transaction dateEach row is a reporting owner. Select a marker to open its transaction details. Jointly reported transactions appear for each associated reporting owner, without dividing quantities or amounts.Zhou RongZhou RongZhou Rong · December 17, 2025 · Exercise / conversion · Common StockDec 17, 2025Dec 17, 2025
PurchaseStock awardGift receivedExercise / conversionConversionOther acquisition

1 dated transactions · 1 of 1 reporting owners shown. Select one owner to focus the chart.

View timeline as a table
Transaction dateCompany / securityReporting ownersAcquisition type
Dec 17, 2025Amphastar Pharmaceuticals, Inc.Common StockZhou RongExercise / conversion

Only transactions on this page are shown. Date windows end on the latest transaction date in this sample. Joint filings may appear on more than one row. Sales are not included. Share-price charts use a separate data source.

Transactions in associated filings

Reported insider acquisitions, ordered by filing date, newest first. Currency is shown only when reported.
Filed / transactedCompanyReporting ownersType / securityQuantityPrice / reference valueDetails
Trade: Amphastar Pharmaceuticals, Inc.AMPH · company listings
Zhou RongSENIOR EVP, PRODUCTION CENTER
Exercise / conversionCommon StockNon-derivative security · Code M9,78711.33Value: 110,886.71Currency not specifiedView ↗