Jack Y. Zhang

Insider Reports History

Entity
Individual
Location
11570 6 Th Street, Rancho Cucamonga, CA
Signature
/s/ Eva Wen, by power of attorney for Jack Y. Zhang
All insider transactions
Transactions in reports broken out by “transaction date” reported in original SEC filing, see here for transactions aggregated across transaction date

Holdings reported by Jack Y. Zhang:

Stock Role Class Num Shares Value Price $ Report Date Ownership
Amphastar Pharmaceuticals, Inc. CEO & CHIEF SCIENTIFIC OFFICER, Director, 10%+ Owner Common Stock 2.51M $131M $52.05 Nov 11, 2024 Direct
Amphastar Pharmaceuticals, Inc. CEO & CHIEF SCIENTIFIC OFFICER, Director, 10%+ Owner Common Stock 1.1M $57.5M $52.05 Nov 11, 2024 Indirect
Amphastar Pharmaceuticals, Inc. CEO & CHIEF SCIENTIFIC OFFICER, Director, 10%+ Owner Employee Stock Option (right to buy) 390K Jun 10, 2024 Direct
Amphastar Pharmaceuticals, Inc. CEO & CHIEF SCIENTIFIC OFFICER, Director, 10%+ Owner Employee Stock Option (right to buy) 290K Sep 13, 2024 Direct

Insider Reports Filed by Jack Y. Zhang

Symbol Company Period Transactions Value $ Form Type Date Filed Role
AMPH Amphastar Pharmaceuticals, Inc. Nov 11, 2024 2 $0 4 Nov 12, 2024 CEO & CHIEF SCIENTIFIC OFFICER, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. Sep 13, 2024 2 $1.47M 4 Sep 16, 2024 CEO & CHIEF SCIENTIFIC OFFICER, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. Jun 10, 2024 2 $1.47M 4 Jun 11, 2024 CEO & CHIEF SCIENTIFIC OFFICER, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. Mar 15, 2024 8 -$14.4M 4 Mar 19, 2024 CEO & Chief Scientific Officer, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. Mar 6, 2024 2 -$464K 4 Mar 8, 2024 CEO & Chief Scientific Officer, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. Mar 4, 2024 4 $0 4 Mar 6, 2024 CEO & CHIEF SCIENTIFIC OFFICER, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. Mar 16, 2023 6 -$2.15M 4 Mar 20, 2023 CEO & Chief Scientific Officer, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. Mar 15, 2023 2 -$414K 4 Mar 17, 2023 CEO & Chief Scientific Officer, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. Mar 6, 2023 4 $0 4 Mar 8, 2023 CEO & Chief Scientific Officer, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. May 20, 2022 1 -$364K 4 May 23, 2022 CEO & Chief Scientific Officer, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. May 18, 2022 5 -$3.7M 4 May 20, 2022 CEO & Chief Scientific Officer, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. May 16, 2022 4 -$4.23M 4 May 18, 2022 CEO & Chief Scientific Officer, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. Mar 16, 2022 4 -$2M 4 Mar 18, 2022 CEO & Chief Scientific Officer, Director, 10%+ Owner
AMPH Amphastar Pharmaceuticals, Inc. Mar 15, 2022 6 -$679K 4 Mar 17, 2022 CEO & Chief Scientific Officer, Director, 10%+ Owner