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Petersen Floyd F.
Director at Amphastar Pharmaceuticals. Filing since 15 Aug 2014.
CIK 0001611286
Company
Date
Role
Action
Shares
Amount
Of holding
AMPH
Amphastar Pharmaceuticals, Inc.
12 Dec 2025
Director
Sold at will
2,426
$62.89K
3.3%
AMPH
Amphastar Pharmaceuticals, Inc.
11 Dec 2025
Director
Sold at will
1,737
$44.62K
2.3%
AMPH
Amphastar Pharmaceuticals, Inc.
13 Nov 2025
Director
Sold at will
16,679
$441.84K
18.1%
AMPH
Amphastar Pharmaceuticals, Inc.
3 Nov 2025
Director
Sold on a plan
500
$12.63K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Oct 2025
Director
Sold on a plan
500
$13.60K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
2 Sep 2025
Director
Sold on a plan
500
$15.49K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Aug 2025
Director
Sold on a plan
500
$10.42K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
2 Jul 2025
Director
Sold on a plan
500
$11.73K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
2 Jun 2025
Director
Sold on a plan
500
$12.84K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 May 2025
Director
Sold on a plan
500
$12.04K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Apr 2025
Director
Sold on a plan
500
$14.19K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
6 Mar 2025
Director
Sold on a plan
1,000
$27.99K
1.3%
AMPH
Amphastar Pharmaceuticals, Inc.
5 Sep 2024
Director
Sold at will
3,000
$139.42K
3.8%
AMPH
Amphastar Pharmaceuticals, Inc.
10 Jun 2024
Director
Sold at will
3,000
$124.20K
3.7%
AMPH
Amphastar Pharmaceuticals, Inc.
3 Jun 2024
Director
Sold on a plan
500
$21.33K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 May 2024
Director
Sold on a plan
500
$20.84K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Apr 2024
Director
Sold on a plan
500
$21.71K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Mar 2024
Director
Sold on a plan
500
$22.85K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Feb 2024
Director
Sold on a plan
500
$26.55K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
2 Jan 2024
Director
Sold on a plan
500
$30.68K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Dec 2023
Director
Sold on a plan
500
$28.95K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Nov 2023
Director
Sold on a plan
500
$22.65K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
2 Oct 2023
Director
Sold on a plan
500
$22.89K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
17 May 2023
Director
Sold at will
5,000
$215.66K
5.9%
AMPH
Amphastar Pharmaceuticals, Inc.
3 Apr 2023
Director
Sold on a plan
491
$18.52K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Mar 2023
Director
Sold, plan not stated
500
$18.35K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Feb 2023
Director
Sold, plan not stated
500
$15.18K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
3 Jan 2023
Director
Sold, plan not stated
500
$13.97K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Dec 2022
Director
Sold, plan not stated
500
$15.07K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Nov 2022
Director
Sold, plan not stated
500
$15.57K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
3 Oct 2022
Director
Sold, plan not stated
500
$14.30K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Sep 2022
Director
Sold, plan not stated
500
$14.72K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Aug 2022
Director
Sold, plan not stated
500
$18.74K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Jul 2022
Director
Sold, plan not stated
500
$17.39K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Jun 2022
Director
Sold, plan not stated
500
$18.50K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
18 May 2022
Director
Sold, plan not stated
9,924
$347.83K
10.3%
AMPH
Amphastar Pharmaceuticals, Inc.
2 May 2022
Director
Sold, plan not stated
295
$10.38K
0.4%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Apr 2022
Director
Sold, plan not stated
500
$18.34K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Mar 2022
Director
Sold, plan not stated
500
$13.64K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Feb 2022
Director
Sold, plan not stated
500
$12.04K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
3 Jan 2022
Director
Sold, plan not stated
500
$11.61K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
22 Dec 2021
Director
Sold, plan not stated
1,000
$22.50K
1.3%
AMPH
Amphastar Pharmaceuticals, Inc.
7 Jun 2021
Director
Sold, plan not stated
15,827
$306.04K
17.7%
AMPH
Amphastar Pharmaceuticals, Inc.
3 Jun 2021
Director
Sold, plan not stated
10,000
$186.53K
12.0%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Feb 2021
Director
Sold, plan not stated
639
$11.67K
0.9%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Dec 2020
Director
Sold, plan not stated
500
$8.94K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
2 Nov 2020
Director
Sold, plan not stated
500
$9.92K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Oct 2020
Director
Sold, plan not stated
500
$9.45K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Sep 2020
Director
Sold, plan not stated
500
$9.95K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
3 Aug 2020
Director
Sold, plan not stated
500
$10.31K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Jul 2020
Director
Sold, plan not stated
500
$11.14K
0.6%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Jun 2020
Director
Sold, plan not stated
500
$9.48K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
15 May 2020
Director
Sold, plan not stated
42,682
$778.97K
37.3%
AMPH
Amphastar Pharmaceuticals, Inc.
14 May 2020
Director
Sold, plan not stated
5,000
$88.88K
6.5%
AMPH
Amphastar Pharmaceuticals, Inc.
12 May 2020
Director
Sold, plan not stated
100
$1.92K
0.1%
AMPH
Amphastar Pharmaceuticals, Inc.
1 May 2020
Director
Sold, plan not stated
500
$8.33K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Apr 2020
Director
Sold, plan not stated
500
$7.18K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
2 Mar 2020
Director
Sold, plan not stated
500
$7.78K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
3 Feb 2020
Director
Sold, plan not stated
500
$9.56K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
2 Jan 2020
Director
Sold, plan not stated
1,000
$19.14K
1.3%
AMPH
Amphastar Pharmaceuticals, Inc.
2 Dec 2019
Director
Sold, plan not stated
500
$9.62K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Nov 2019
Director
Sold, plan not stated
500
$9.74K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Oct 2019
Director
Sold, plan not stated
500
$9.96K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
16 Sep 2019
Director
Sold, plan not stated
500
$10.88K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
4 Oct 2017
Director
Sold, plan not stated
39,312
$730.76K
37.8%
AMPH
Amphastar Pharmaceuticals, Inc.
3 Jan 2017
Director
Sold, plan not stated
400
$7.44K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Dec 2016
Director
Sold, plan not stated
400
$8.10K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
1 Nov 2016
Director
Sold, plan not stated
400
$7.24K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
3 Oct 2016
Director
Sold, plan not stated
400
$7.50K
0.7%
AMPH
Amphastar Pharmaceuticals, Inc.
8 Sep 2016
Director
Sold, plan not stated
3,000
$57.15K
4.7%
AMPH
Amphastar Pharmaceuticals, Inc.
20 Nov 2015
Director
Sold, plan not stated
31,529
$450.51K
35.5%
AMPH
Amphastar Pharmaceuticals, Inc.
15 Aug 2014
Director
Bought
3,200
$33.13K
8.3%
72 decisions on file.
