William J. Peters

Insider Reports History

Location
Rancho Cucamonga, CA
Signature
/s/ William J. Peters
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 William J. Peters:

Company Role Class Num Shares Value Price $ Report Date Ownership
Amphastar Pharmaceuticals, Inc. CFO, EVP & TREASURER, Director Common Stock 124,985 $3,098,378 $24.79 19 May 2025 Direct
Amphastar Pharmaceuticals, Inc. CFO, EVP & TREASURER, Director Employee Stock Option (right to buy) 78,039 10 Mar 2025 Direct

Insider Reports Filed by William J. Peters

Symbol Company Period Transactions Value $ Form Type Role Filing Time
AMPH Amphastar Pharmaceuticals, Inc. 19 May 2025 1 -$6,768 4 CFO, EVP & TREASURER, Director 20 May 2025, 17:02
AMPH Amphastar Pharmaceuticals, Inc. 15 Mar 2025 2 -$135,648 4 CFO, EVP & TREASURER, Director 18 Mar 2025, 18:38
AMPH Amphastar Pharmaceuticals, Inc. 10 Mar 2025 2 $0 4 CFO, EVP & TREASURER, Director 12 Mar 2025, 16:14
AMPH Amphastar Pharmaceuticals, Inc. 06 Mar 2025 1 -$60,633 4 CFO, EVP & TREASURER, Director 10 Mar 2025, 17:29
AMPH Amphastar Pharmaceuticals, Inc. 04 Mar 2025 4 -$64,555 4 CFO, EVP & TREASURER, Director 06 Mar 2025, 17:00
AMPH Amphastar Pharmaceuticals, Inc. 06 Nov 2024 3 -$289,763 4 CFO, EVP & TREASURER, Director 08 Nov 2024, 17:24
AMPH Amphastar Pharmaceuticals, Inc. 31 Jul 2024 3 -$246,768 4 CFO, EVP & TREASURER, Director 02 Aug 2024, 16:32
AMPH Amphastar Pharmaceuticals, Inc. 27 Jun 2024 2 -$147,169 4 CFO, EVP & TREASURER, Director 28 Jun 2024, 16:26
AMPH Amphastar Pharmaceuticals, Inc. 19 May 2024 1 -$16,827 4 CFO, EVP & TREASURER, Director 21 May 2024, 18:26
AMPH Amphastar Pharmaceuticals, Inc. 15 Mar 2024 3 -$501,317 4 CFO, EVP & TREASURER, Director 19 Mar 2024, 17:10
AMPH Amphastar Pharmaceuticals, Inc. 06 Mar 2024 6 -$844,303 4 CFO, EVP & TREASURER, Director 08 Mar 2024, 16:52
AMPH Amphastar Pharmaceuticals, Inc. 04 Mar 2024 2 $0 4 CFO, EVP & TREASURER, Director 06 Mar 2024, 17:49
AMPH Amphastar Pharmaceuticals, Inc. 14 Nov 2023 7 -$2,373,447 4 CFO, EVP & Treasurer, Director 16 Nov 2023, 16:05
AMPH Amphastar Pharmaceuticals, Inc. 06 Sep 2023 8 -$2,186,400 4 CFO, EVP & Treasurer, Director 08 Sep 2023, 16:08
AMPH Amphastar Pharmaceuticals, Inc. 15 Jun 2023 5 -$1,145,172 4 CFO, EVP & Treasurer, Director 20 Jun 2023, 16:01
AMPH Amphastar Pharmaceuticals, Inc. 02 Jun 2023 3 -$363,009 4 CFO, EVP & Treasurer, Director 05 Jun 2023, 17:06
AMPH Amphastar Pharmaceuticals, Inc. 18 May 2023 4 -$342,192 4 CFO, EVP & Treasurer, Director 22 May 2023, 18:49
AMPH Amphastar Pharmaceuticals, Inc. 17 Apr 2023 3 -$163,328 4 CFO, EVP & Treasurer, Director 18 Apr 2023, 20:07
AMPH Amphastar Pharmaceuticals, Inc. 13 Apr 2023 3 -$141,172 4 CFO, EVP & Treasurer, Director 14 Apr 2023, 17:48
AMPH Amphastar Pharmaceuticals, Inc. 10 Apr 2023 3 -$270,864 4 CFO, EVP & Treasurer, Director 12 Apr 2023, 17:21
AMPH Amphastar Pharmaceuticals, Inc. 16 Mar 2023 2 -$338,851 4 CFO, EVP & Treasurer 20 Mar 2023, 20:03
AMPH Amphastar Pharmaceuticals, Inc. 15 Mar 2023 4 -$518,225 4 CFO, EVP & Treasurer 17 Mar 2023, 19:03
AMPH Amphastar Pharmaceuticals, Inc. 06 Mar 2023 2 $0 4 CFO, EVP & Treasurer 08 Mar 2023, 15:38
AMPH Amphastar Pharmaceuticals, Inc. 01 Mar 2023 3 -$274,350 4 CFO, EVP & Treasurer 03 Mar 2023, 15:47
AMPH Amphastar Pharmaceuticals, Inc. 09 Aug 2022 3 -$250,000 4 CFO, EVP & Treasurer 10 Aug 2022, 19:34
AMPH Amphastar Pharmaceuticals, Inc. 30 Jun 2022 3 -$367,720 4 CFO, EVP & Treasurer 01 Jul 2022, 18:08
AMPH Amphastar Pharmaceuticals, Inc. 17 Jun 2022 1 -$176,682 4 CFO, EVP & Treasurer 22 Jun 2022, 16:21
AMPH Amphastar Pharmaceuticals, Inc. 19 May 2022 1 -$12,739 4 CFO, EVP & Treasurer 20 May 2022, 17:53
AMPH Amphastar Pharmaceuticals, Inc. 16 Mar 2022 6 -$1,306,425 4 CFO, EVP & Treasurer 18 Mar 2022, 18:57
AMPH Amphastar Pharmaceuticals, Inc. 15 Mar 2022 4 -$480,306 4 CFO, EVP & Treasurer 17 Mar 2022, 18:13
AMPH Amphastar Pharmaceuticals, Inc. 07 Mar 2022 3 -$208,416 4 CFO, EVP & Treasurer 09 Mar 2022, 15:06
AMPH Amphastar Pharmaceuticals, Inc. 25 Feb 2022 4 -$311,000 4 CFO, EVP & Treasurer 01 Mar 2022, 15:05
AMPH Amphastar Pharmaceuticals, Inc. 08 Feb 2022 3 -$120,000 4 CFO, EVP & Treasurer 09 Feb 2022, 20:06
AMPH Amphastar Pharmaceuticals, Inc. 07 Jan 2022 7 -$494,648 4 CFO, EVP & Treasurer 11 Jan 2022, 17:22
AMPH Amphastar Pharmaceuticals, Inc. 30 Dec 2021 3 -$90,000 4 CFO, EVP & Treasurer 04 Jan 2022, 15:52
AMPH Amphastar Pharmaceuticals, Inc. 21 Dec 2021 3 -$66,048 4 CFO, EVP & Treasurer 22 Dec 2021, 16:04
AMPH Amphastar Pharmaceuticals, Inc. 16 Dec 2021 3 -$13,952 4 CFO, EVP & Treasurer 17 Dec 2021, 18:52
AMPH Amphastar Pharmaceuticals, Inc. 11 Nov 2021 3 -$100,000 4 CFO, EVP & Treasurer 12 Nov 2021, 18:42
AMPH Amphastar Pharmaceuticals, Inc. 16 Aug 2021 1 -$127,524 4 CFO, EVP & Treasurer 17 Aug 2021, 16:25
AMPH Amphastar Pharmaceuticals, Inc. 07 Jul 2021 3 -$90,439 4 CFO, EVP & Treasurer 08 Jul 2021, 18:32
AMPH Amphastar Pharmaceuticals, Inc. 19 May 2021 2 $0 4 CFO, EVP & Treasurer 20 May 2021, 18:32