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PETERS WILLIAM J
CFO, EVP & TREASURER at Amphastar Pharmaceuticals. Filing since 2 Jun 2016.
CIK 0001263136
Company
Date
Role
Action
Shares
Amount
Of holding
AMPH
Amphastar Pharmaceuticals, Inc.
21 Sep 2026
CFO, EVP & TREASURER
Sold on a plan
4,139
$103.48K
2.4%
AMPH
Amphastar Pharmaceuticals, Inc.
7 Aug 2026
CFO, EVP & TREASURER
Sold on a plan
8,180
$183.89K
4.5%
AMPH
Amphastar Pharmaceuticals, Inc.
4 Mar 2025
CFO, EVP & TREASURER
Sold on a plan
4,231
$116.52K
4.2%
AMPH
Amphastar Pharmaceuticals, Inc.
6 Nov 2024
CFO, EVP & TREASURER
Sold on a plan
7,426
$386.52K
7.3%
AMPH
Amphastar Pharmaceuticals, Inc.
31 Jul 2024
CFO, EVP & TREASURER
Sold on a plan
10,282
$454.77K
9.9%
AMPH
Amphastar Pharmaceuticals, Inc.
27 Jun 2024
CFO, EVP & TREASURER
Sold on a plan
3,596
$147.17K
3.7%
AMPH
Amphastar Pharmaceuticals, Inc.
6 Mar 2024
CFO, EVP & TREASURER
Sold on a plan
18,136
$842.88K
14.0%
AMPH
Amphastar Pharmaceuticals, Inc.
14 Nov 2023
CFO, EVP & Treasurer
Sold on a plan
59,250
$3.30M
36.9%
AMPH
Amphastar Pharmaceuticals, Inc.
6 Sep 2023
CFO, EVP & Treasurer
Sold on a plan
60,743
$3.14M
37.5%
AMPH
Amphastar Pharmaceuticals, Inc.
15 Jun 2023
CFO, EVP & Treasurer
Sold on a plan
36,868
$1.87M
25.9%
AMPH
Amphastar Pharmaceuticals, Inc.
2 Jun 2023
CFO, EVP & Treasurer
Sold on a plan
11,000
$509.86K
9.4%
AMPH
Amphastar Pharmaceuticals, Inc.
18 May 2023
CFO, EVP & Treasurer
Sold on a plan
10,500
$465.68K
9.1%
AMPH
Amphastar Pharmaceuticals, Inc.
17 Apr 2023
CFO, EVP & Treasurer
Sold on a plan
5,632
$238.52K
5.1%
AMPH
Amphastar Pharmaceuticals, Inc.
13 Apr 2023
CFO, EVP & Treasurer
Sold on a plan
4,868
$206.16K
4.4%
AMPH
Amphastar Pharmaceuticals, Inc.
10 Apr 2023
CFO, EVP & Treasurer
Sold at will
10,032
$404.79K
8.7%
AMPH
Amphastar Pharmaceuticals, Inc.
15 Mar 2023
CFO, EVP & Treasurer
Sold, plan not stated
12,776
$465.47K
9.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Mar 2023
CFO, EVP & Treasurer
Sold, plan not stated
10,974
$398.69K
9.8%
AMPH
Amphastar Pharmaceuticals, Inc.
9 Aug 2022
CFO, EVP & Treasurer
Sold, plan not stated
10,000
$383.50K
9.1%
AMPH
Amphastar Pharmaceuticals, Inc.
30 Jun 2022
CFO, EVP & Treasurer
Sold, plan not stated
18,386
$642.59K
15.5%
AMPH
Amphastar Pharmaceuticals, Inc.
17 Jun 2022
CFO, EVP & Treasurer
Sold, plan not stated
5,512
$176.68K
5.2%
AMPH
Amphastar Pharmaceuticals, Inc.
16 Mar 2022
CFO, EVP & Treasurer
Sold, plan not stated
50,777
$1.72M
30.8%
AMPH
Amphastar Pharmaceuticals, Inc.
15 Mar 2022
CFO, EVP & Treasurer
Sold, plan not stated
7,900
$272.25K
7.4%
AMPH
Amphastar Pharmaceuticals, Inc.
7 Mar 2022
CFO, EVP & Treasurer
Sold, plan not stated
13,026
$382.31K
10.9%
AMPH
Amphastar Pharmaceuticals, Inc.
25 Feb 2022
CFO, EVP & Treasurer
Sold, plan not stated
23,000
$654.85K
17.8%
AMPH
Amphastar Pharmaceuticals, Inc.
8 Feb 2022
CFO, EVP & Treasurer
Sold, plan not stated
10,000
$269.50K
8.6%
AMPH
Amphastar Pharmaceuticals, Inc.
10 Jan 2022
CFO, EVP & Treasurer
Sold, plan not stated
16,000
$406.40K
13.1%
AMPH
Amphastar Pharmaceuticals, Inc.
7 Jan 2022
CFO, EVP & Treasurer
Sold, plan not stated
31,776
$776.22K
23.1%
AMPH
Amphastar Pharmaceuticals, Inc.
30 Dec 2021
CFO, EVP & Treasurer
Sold, plan not stated
10,000
$234.00K
8.6%
AMPH
Amphastar Pharmaceuticals, Inc.
21 Dec 2021
CFO, EVP & Treasurer
Sold, plan not stated
8,256
$184.93K
7.2%
AMPH
Amphastar Pharmaceuticals, Inc.
16 Dec 2021
CFO, EVP & Treasurer
Sold, plan not stated
1,744
$39.07K
1.6%
AMPH
Amphastar Pharmaceuticals, Inc.
11 Nov 2021
CFO, EVP & Treasurer
Sold, plan not stated
10,000
$213.30K
8.6%
AMPH
Amphastar Pharmaceuticals, Inc.
16 Aug 2021
CFO, EVP & Treasurer
Sold, plan not stated
6,589
$127.52K
5.9%
AMPH
Amphastar Pharmaceuticals, Inc.
7 Jul 2021
CFO, EVP & Treasurer
Sold, plan not stated
10,000
$203.74K
8.2%
AMPH
Amphastar Pharmaceuticals, Inc.
15 Mar 2021
CFO, SVP & Treasurer
Sold, plan not stated
4,244
$80.75K
4.7%
AMPH
Amphastar Pharmaceuticals, Inc.
19 Jan 2021
CFO, SVP & Treasurer
Sold, plan not stated
6,495
$121.24K
6.8%
AMPH
Amphastar Pharmaceuticals, Inc.
14 Aug 2020
CFO, SVP & Treasurer
Sold, plan not stated
5,512
$112.22K
5.4%
AMPH
Amphastar Pharmaceuticals, Inc.
6 Jul 2020
CFO, SVP & Treasurer
Sold, plan not stated
13,656
$300.40K
11.9%
AMPH
Amphastar Pharmaceuticals, Inc.
13 Mar 2020
CFO, SVP & Treasurer
Sold, plan not stated
4,701
$65.54K
6.0%
AMPH
Amphastar Pharmaceuticals, Inc.
21 Jan 2020
CFO, SVP & Treasurer
Sold, plan not stated
3,990
$80.07K
4.8%
AMPH
Amphastar Pharmaceuticals, Inc.
16 Sep 2019
CFO, SVP & Treasurer
Sold, plan not stated
9,800
$213.26K
10.6%
AMPH
Amphastar Pharmaceuticals, Inc.
15 Aug 2019
CFO, SVP & Treasurer
Sold, plan not stated
4,942
$103.78K
5.7%
AMPH
Amphastar Pharmaceuticals, Inc.
4 Mar 2019
CFO, SVP & Treasurer
Sold, plan not stated
1,500
$38.04K
1.9%
AMPH
Amphastar Pharmaceuticals, Inc.
15 Feb 2019
CFO, SVP & Treasurer
Sold, plan not stated
10,016
$244.09K
11.7%
AMPH
Amphastar Pharmaceuticals, Inc.
2 Jan 2019
CFO, SVP & Treasurer
Sold, plan not stated
3,245
$63.35K
4.1%
AMPH
Amphastar Pharmaceuticals, Inc.
3 Dec 2018
CFO, SVP & Treasurer
Sold, plan not stated
10,000
$224.00K
11.3%
AMPH
Amphastar Pharmaceuticals, Inc.
12 Nov 2018
CFO, SVP & Treasurer
Sold, plan not stated
3,172
$65.37K
3.9%
AMPH
Amphastar Pharmaceuticals, Inc.
9 Nov 2018
CFO, SVP & Treasurer
Sold, plan not stated
10,000
$214.72K
11.0%
AMPH
Amphastar Pharmaceuticals, Inc.
8 Nov 2018
CFO, SVP & Treasurer
Sold, plan not stated
25,312
$517.88K
23.7%
AMPH
Amphastar Pharmaceuticals, Inc.
16 Aug 2018
CFO, SVP & Treasurer
Sold, plan not stated
2,407
$42.33K
2.7%
AMPH
Amphastar Pharmaceuticals, Inc.
9 Jul 2018
CFO, SVP & Treasurer
Sold, plan not stated
3,250
$53.50K
3.5%
AMPH
Amphastar Pharmaceuticals, Inc.
13 Mar 2018
CFO, SVP & Treasurer
Sold, plan not stated
19,801
$398.00K
20.2%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Dec 2017
CFO, SVP & Treasurer
Sold, plan not stated
6,226
$122.47K
7.4%
AMPH
Amphastar Pharmaceuticals, Inc.
13 Oct 2017
CFO, SVP & Treasurer
Sold, plan not stated
3,026
$56.18K
3.5%
AMPH
Amphastar Pharmaceuticals, Inc.
30 May 2017
CFO, SVP & Treasurer
Sold, plan not stated
4,297
$72.73K
4.7%
AMPH
Amphastar Pharmaceuticals, Inc.
12 Aug 2016
CFO, SVP & Treasurer
Sold, plan not stated
1,027
$18.68K
1.6%
AMPH
Amphastar Pharmaceuticals, Inc.
18 Jul 2016
CFO, SVP & Treasurer
Sold, plan not stated
2,297
$40.79K
3.4%
AMPH
Amphastar Pharmaceuticals, Inc.
2 Jun 2016
CFO, SVP & Treasurer
Sold, plan not stated
2,297
$36.75K
3.3%
57 decisions on file.
