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Amphastar Pharmaceuticals

AMPH ManufacturingChemicals
Transactions reported in official disclosures

Price with disclosed trades

Daily closes, past year · marks sit on transaction dates, sized by value

31 trades

Reporting person Filed Transaction Transaction value Source
Peters William J CFO, EVP & Treasurer Nov 6, 2026 1-day lag Sale Nov 5, 2026 $366.19K Filed shares x price SEC Form 4 View filing
Peters William J CFO, EVP & Treasurer Nov 6, 2026 1-day lag Exercise Nov 5, 2026 $0 Filed shares x price SEC Form 4 View filing
Peters William J CFO, EVP & Treasurer Nov 6, 2026 1-day lag Exercise Nov 5, 2026 $197.89K Filed shares x price SEC Form 4 View filing
Peters William J CFO, EVP & Treasurer Nov 6, 2026 2-day lag Exercise Nov 4, 2026 $0 Filed shares x price SEC Form 4 View filing
Peters William J CFO, EVP & Treasurer Nov 6, 2026 2-day lag Exercise Nov 4, 2026 $208.48K Filed shares x price SEC Form 4 View filing
Peters William J CFO, EVP & Treasurer Nov 6, 2026 2-day lag Sale Nov 4, 2026 $448.48K Filed shares x price SEC Form 4 View filing
Peters William J CFO, EVP & Treasurer Sep 23, 2026 2-day lag Sale Sep 21, 2026 $103.47K Filed shares x price SEC Form 4 View filing
Zhou Rong Senior EVP, Production Center Sep 17, 2026 1-day lag Exercise Sep 16, 2026 $0 Filed shares x price SEC Form 4 View filing
Zhou Rong Senior EVP, Production Center Sep 17, 2026 1-day lag Sale Sep 16, 2026 $239.4K Filed shares x price SEC Form 4 View filing
Zhou Rong Senior EVP, Production Center Sep 17, 2026 1-day lag Exercise Sep 16, 2026 $133.5K Filed shares x price SEC Form 4 View filing
Zhou Rong Senior EVP, Production Center Sep 3, 2026 1-day lag Sale Sep 2, 2026 $75.31K Filed shares x price SEC Form 4 View filing
Prins Richard K Director Aug 12, 2026 1-day lag Sale Aug 11, 2026 $161.85K Filed shares x price SEC Form 4 View filing
Peters William J CFO, EVP & Treasurer Aug 11, 2026 4-day lag Exercise Aug 7, 2026 $0 Filed shares x price SEC Form 4 View filing
Peters William J CFO, EVP & Treasurer Aug 11, 2026 4-day lag Exercise Aug 7, 2026 $100K Filed shares x price SEC Form 4 View filing
Peters William J CFO, EVP & Treasurer Aug 11, 2026 4-day lag Sale Aug 7, 2026 $183.89K Filed shares x price SEC Form 4 View filing
Pierce Anthony T Director Jul 13, 2026 4-day lag Award Jul 9, 2026 $0 Filed shares x price SEC Form 4 View filing
Pierce Anthony T Director Jul 13, 2026 4-day lag Award Jul 9, 2026 $0 Filed shares x price SEC Form 4 View filing
Lee Howard Director Jun 3, 2026 1-day lag Disposition Jun 2, 2026 $14.19K Filed shares x price SEC Form 4 View filing
Gerst Diane G. Director Jun 3, 2026 2-day lag Award Jun 1, 2026 $0 Filed shares x price SEC Form 4 View filing
Prins Richard K Director Jun 3, 2026 2-day lag Award Jun 1, 2026 $0 Filed shares x price SEC Form 4 View filing
Lee Howard Director Jun 3, 2026 2-day lag Award Jun 1, 2026 $0 Filed shares x price SEC Form 4 View filing
Prins Richard K Director Jun 3, 2026 2-day lag Award Jun 1, 2026 $0 Filed shares x price SEC Form 4 View filing
Lee Howard Director Jun 3, 2026 2-day lag Award Jun 1, 2026 $0 Filed shares x price SEC Form 4 View filing
Gerst Diane G. Director Jun 3, 2026 2-day lag Award Jun 1, 2026 $0 Filed shares x price SEC Form 4 View filing
Deflin Gayle Director Jun 3, 2026 2-day lag Award Jun 1, 2026 $0 Filed shares x price SEC Form 4 View filing
Gaugh David Russell Director Jun 3, 2026 2-day lag Award Jun 1, 2026 $0 Filed shares x price SEC Form 4 View filing
Gaugh David Russell Director Jun 3, 2026 2-day lag Award Jun 1, 2026 $0 Filed shares x price SEC Form 4 View filing
Zasloff Michael A Director Jun 3, 2026 2-day lag Award Jun 1, 2026 $0 Filed shares x price SEC Form 4 View filing
Zasloff Michael A Director Jun 3, 2026 2-day lag Award Jun 1, 2026 $0 Filed shares x price SEC Form 4 View filing
Deflin Gayle Director Jun 3, 2026 2-day lag Award Jun 1, 2026 $0 Filed shares x price SEC Form 4 View filing
Peters William J CFO, EVP & Treasurer
Sale
Calculated transaction value
$366.19K 12,631 shares @ $28.99
Traded
Nov 5, 2026
Filed
Nov 6, 2026
SEC Form 4
View filing Trade details
Peters William J CFO, EVP & Treasurer
Exercise
Calculated transaction value
$0 11,000 shares @ $0
Traded
Nov 5, 2026
Filed
Nov 6, 2026
SEC Form 4
View filing Trade details
Peters William J CFO, EVP & Treasurer
Exercise
Calculated transaction value
$197.89K 11,000 shares @ $17.99
Traded
Nov 5, 2026
Filed
Nov 6, 2026
SEC Form 4
View filing Trade details
Peters William J CFO, EVP & Treasurer
Exercise
Calculated transaction value
$0 16,000 shares @ $0
Traded
Nov 4, 2026
Filed
Nov 6, 2026
SEC Form 4
View filing Trade details
Peters William J CFO, EVP & Treasurer
Exercise
Calculated transaction value
$208.48K 16,000 shares @ $13.03
Traded
Nov 4, 2026
Filed
Nov 6, 2026
SEC Form 4
View filing Trade details
Peters William J CFO, EVP & Treasurer
Sale
Calculated transaction value
$448.48K 16,000 shares @ $28.03
Traded
Nov 4, 2026
Filed
Nov 6, 2026
SEC Form 4
View filing Trade details
Peters William J CFO, EVP & Treasurer
Sale
Calculated transaction value
$103.47K 4,139 shares @ $25
Traded
Sep 21, 2026
Filed
Sep 23, 2026
SEC Form 4
View filing Trade details
Zhou Rong Senior EVP, Production Center
Exercise
Calculated transaction value
$0 10,000 shares @ $0
Traded
Sep 16, 2026
Filed
Sep 17, 2026
SEC Form 4
View filing Trade details
Zhou Rong Senior EVP, Production Center
Sale
Calculated transaction value
$239.4K 10,000 shares @ $23.94
Traded
Sep 16, 2026
Filed
Sep 17, 2026
SEC Form 4
View filing Trade details
Zhou Rong Senior EVP, Production Center
Exercise
Calculated transaction value
$133.5K 10,000 shares @ $13.35
Traded
Sep 16, 2026
Filed
Sep 17, 2026
SEC Form 4
View filing Trade details
Zhou Rong Senior EVP, Production Center
Sale
Calculated transaction value
$75.31K 3,187 shares @ $23.63
Traded
Sep 2, 2026
Filed
Sep 3, 2026
SEC Form 4
View filing Trade details
Prins Richard K Director
Sale
Calculated transaction value
$161.85K 7,973 shares @ $20.3
Traded
Aug 11, 2026
Filed
Aug 12, 2026
SEC Form 4
View filing Trade details
Peters William J CFO, EVP & Treasurer
Exercise
Calculated transaction value
$0 5,053 shares @ $0
Traded
Aug 7, 2026
Filed
Aug 11, 2026
SEC Form 4
View filing Trade details
Peters William J CFO, EVP & Treasurer
Exercise
Calculated transaction value
$100K 5,053 shares @ $19.79
Traded
Aug 7, 2026
Filed
Aug 11, 2026
SEC Form 4
View filing Trade details
Peters William J CFO, EVP & Treasurer
Sale
Calculated transaction value
$183.89K 8,180 shares @ $22.48
Traded
Aug 7, 2026
Filed
Aug 11, 2026
SEC Form 4
View filing Trade details
Pierce Anthony T Director
Award
Calculated transaction value
$0 7,886 shares @ $0
Traded
Jul 9, 2026
Filed
Jul 13, 2026
SEC Form 4
View filing Trade details
Pierce Anthony T Director
Award
Calculated transaction value
$0 16,646 shares @ $0
Traded
Jul 9, 2026
Filed
Jul 13, 2026
SEC Form 4
View filing Trade details
Lee Howard Director
Disposition
Calculated transaction value
$14.19K 769 shares @ $18.45
Traded
Jun 2, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details
Gerst Diane G. Director
Award
Calculated transaction value
$0 8,143 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details
Prins Richard K Director
Award
Calculated transaction value
$0 17,365 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details
Lee Howard Director
Award
Calculated transaction value
$0 17,365 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details
Prins Richard K Director
Award
Calculated transaction value
$0 8,143 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details
Lee Howard Director
Award
Calculated transaction value
$0 8,143 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details
Gerst Diane G. Director
Award
Calculated transaction value
$0 17,365 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details
Deflin Gayle Director
Award
Calculated transaction value
$0 8,143 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details
Gaugh David Russell Director
Award
Calculated transaction value
$0 17,365 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details
Gaugh David Russell Director
Award
Calculated transaction value
$0 8,143 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details
Zasloff Michael A Director
Award
Calculated transaction value
$0 17,365 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details
Zasloff Michael A Director
Award
Calculated transaction value
$0 8,143 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details
Deflin Gayle Director
Award
Calculated transaction value
$0 17,365 shares @ $0
Traded
Jun 1, 2026
Filed
Jun 3, 2026
SEC Form 4
View filing Trade details

Showing 1 to 30 of 31 entries