{"data":[{"accessionNo":"0001969223-26-001034","issuerCik":"0001297184","issuerName":"Amphastar Pharmaceuticals, Inc.","ticker":"AMPH","personName":"PETERS WILLIAM J","relationship":"Officer","securityClass":"Common","broker":"UBS Financial Services, Inc.","unitsToSell":4139,"aggregateMarketValue":103475,"unitsOutstanding":42537944,"approxSaleDate":"2026-09-21","exchange":"NASDAQ","filedAt":"2026-09-21","canonicalUrl":"https://xoomar.com/markets/stocks/amph"},{"accessionNo":"0001969223-26-000982","issuerCik":"0001297184","issuerName":"Amphastar Pharmaceuticals, Inc.","ticker":"AMPH","personName":"Rong Zhou","relationship":"Vice President","securityClass":"Common Stock","broker":"UBS Financial Services Inc","unitsToSell":13187,"aggregateMarketValue":290114,"unitsOutstanding":44092919,"approxSaleDate":"2026-09-01","exchange":"NASDAQ","filedAt":"2026-09-01","canonicalUrl":"https://xoomar.com/markets/stocks/amph"},{"accessionNo":"0001969223-26-000926","issuerCik":"0001297184","issuerName":"Amphastar Pharmaceuticals, Inc.","ticker":"AMPH","personName":"Floyd Petersen","relationship":"Director","securityClass":"Common Stock","broker":"UBS Financial Services Inc","unitsToSell":47101,"aggregateMarketValue":989121,"unitsOutstanding":44092000,"approxSaleDate":"2026-08-18","exchange":"NASDAQ","filedAt":"2026-08-18","canonicalUrl":"https://xoomar.com/markets/stocks/amph"},{"accessionNo":"0001969223-26-000880","issuerCik":"0001297184","issuerName":"Amphastar Pharmaceuticals, Inc.","ticker":"AMPH","personName":"Richard Prins","relationship":"Director","securityClass":"Common Stock","broker":"UBS Financial Services Inc","unitsToSell":7973,"aggregateMarketValue":161931.63,"unitsOutstanding":44009000,"approxSaleDate":"2026-08-11","exchange":"NASDAQ","filedAt":"2026-08-11","canonicalUrl":"https://xoomar.com/markets/stocks/amph"},{"accessionNo":"0001969223-26-000860","issuerCik":"0001297184","issuerName":"Amphastar Pharmaceuticals, Inc.","ticker":"AMPH","personName":"PETERS WILLIAM J","relationship":"Officer","securityClass":"Common","broker":"UBS Financial Services, Inc.","unitsToSell":8180,"aggregateMarketValue":183886.4,"unitsOutstanding":42537944,"approxSaleDate":"2026-08-07","exchange":"NASDAQ","filedAt":"2026-08-07","canonicalUrl":"https://xoomar.com/markets/stocks/amph"},{"accessionNo":"0001969223-25-001078","issuerCik":"0001297184","issuerName":"Amphastar Pharmaceuticals, Inc.","ticker":"AMPH","personName":"Floyd Petersen","relationship":"Director","securityClass":"Common Stock","broker":"UBS Financial Services Inc","unitsToSell":4163,"aggregateMarketValue":333040,"unitsOutstanding":45950000,"approxSaleDate":"2025-12-11","exchange":"NASDAQ","filedAt":"2025-12-11","canonicalUrl":"https://xoomar.com/markets/stocks/amph"},{"accessionNo":"0001969223-25-001063","issuerCik":"0001297184","issuerName":"Amphastar Pharmaceuticals, Inc.","ticker":"AMPH","personName":"Floyd Petersen","relationship":"Director","securityClass":"Common Stock","broker":"UBS Financial Services Inc","unitsToSell":1737,"aggregateMarketValue":43425,"unitsOutstanding":45950000,"approxSaleDate":"2025-12-10","exchange":"NASDAQ","filedAt":"2025-12-10","canonicalUrl":"https://xoomar.com/markets/stocks/amph"},{"accessionNo":"0001969223-25-001002","issuerCik":"0001297184","issuerName":"Amphastar Pharmaceuticals, Inc.","ticker":"AMPH","personName":"Rong Zhou","relationship":"Officer","securityClass":"Common Stock","broker":"UBS Financial Services Inc","unitsToSell":20000,"aggregateMarketValue":500000,"unitsOutstanding":45950000,"approxSaleDate":"2025-11-28","exchange":"NASDAQ","filedAt":"2025-11-28","canonicalUrl":"https://xoomar.com/markets/stocks/amph"},{"accessionNo":"0001969223-25-000996","issuerCik":"0001297184","issuerName":"Amphastar Pharmaceuticals, Inc.","ticker":"AMPH","personName":"Richard Prins","relationship":"Director","securityClass":"Common Stock","broker":"UBS Financial Services Inc","unitsToSell":4179,"aggregateMarketValue":104475,"unitsOutstanding":49550000,"approxSaleDate":"2025-11-25","exchange":"NASDAQ","filedAt":"2025-11-25","canonicalUrl":"https://xoomar.com/markets/stocks/amph"},{"accessionNo":"0001969223-25-000949","issuerCik":"0001297184","issuerName":"Amphastar Pharmaceuticals, Inc.","ticker":"AMPH","personName":"Floyd Petersen","relationship":"Director","securityClass":"Common Stock","broker":"UBS Financial Services Inc","unitsToSell":16679,"aggregateMarketValue":441836.72,"unitsOutstanding":45952174,"approxSaleDate":"2025-11-13","exchange":"NASDAQ","filedAt":"2025-11-13","canonicalUrl":"https://xoomar.com/markets/stocks/amph"},{"accessionNo":"0001969223-25-000906","issuerCik":"0001297184","issuerName":"Amphastar Pharmaceuticals, Inc.","ticker":"AMPH","personName":"Petersen Floyd F.","relationship":"Director","securityClass":"Common","broker":"UBS Financial Services, Inc.","unitsToSell":500,"aggregateMarketValue":12650,"unitsOutstanding":46495077,"approxSaleDate":"2025-11-03","exchange":"NASDAQ","filedAt":"2025-11-03","canonicalUrl":"https://xoomar.com/markets/stocks/amph"},{"accessionNo":"0001969223-25-000812","issuerCik":"0001297184","issuerName":"Amphastar Pharmaceuticals, Inc.","ticker":"AMPH","personName":"Petersen Floyd F.","relationship":"Director","securityClass":"Common","broker":"UBS Financial Services, Inc.","unitsToSell":500,"aggregateMarketValue":13370,"unitsOutstanding":46495077,"approxSaleDate":"2025-10-01","exchange":"NASDAQ","filedAt":"2025-10-01","canonicalUrl":"https://xoomar.com/markets/stocks/amph"}],"updatedAt":"2026-11-03T16:25:56.844Z","source":"xoomar.com","docs":"https://xoomar.com/markets/api","license":"https://xoomar.com/terms","attribution":"Credit XOOMAR with a link to the dataset page on xoomar.com when you republish this data","canonicalUrl":"https://xoomar.com/markets/stocks/amph","meta":{"source":"SEC","sourceAttribution":"Form 144 data: SEC.","notice":"10 requests a minute without a key, 30 with a free key. Get a free key at https://xoomar.com/signup?utm_source=api, register your app at https://xoomar.com/developers/register?utm_source=api, and credit the data as \"Data: XOOMAR\" together with the sourceAttribution line."}}