Petersen Floyd F. (CIK 0001611286)

Latest company ownership

Shares held
16,679
Last filed at
Nov 17, 2025
Confidence Score
14.6
2025Q4
Confidence Score History
2014Q3 2025Q4

Recent buy/sell transactions

Exec date Filing date Company Role Signal Confidence Shares % of shares Under plan? Amount (USD)
Dec 11, 2025 Dec 15, 2025 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -4,163 -5.51% ✗ $107.5K
Nov 13, 2025 Nov 17, 2025 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -16,679 -18.09% ✗ $441.8K
Nov 3, 2025 Nov 5, 2025 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.66% ✓ $12.6K
Oct 1, 2025 Oct 2, 2025 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.65% ✓ $13.6K
Sep 2, 2025 Sep 3, 2025 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.65% ✓ $15.5K
Aug 1, 2025 Aug 4, 2025 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.64% ✓ $10.4K
Jul 2, 2025 Jul 3, 2025 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.64% ✓ $11.7K
Jun 2, 2025 Jun 4, 2025 Amphastar Pharmaceuticals, Inc. Director Sell 86.3 +4,622 6.30% ✓ $12.8K
May 1, 2025 May 2, 2025 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.68% ✓ $12K
Apr 1, 2025 Apr 2, 2025 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.67% ✓ $14.2K
Mar 6, 2025 Mar 7, 2025 Amphastar Pharmaceuticals, Inc. Director Sell 48.8 -1,000 -1.33% ✓ $28K
Sep 5, 2024 Sep 6, 2024 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -3,000 -3.83% ✗ $139.4K
Jun 10, 2024 Jun 11, 2024 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -3,000 -3.69% ✗ $124.2K
Jun 3, 2024 Jun 5, 2024 Amphastar Pharmaceuticals, Inc. Director Sell 83.8 +2,576 3.27% ✓ $21.3K
May 1, 2024 May 2, 2024 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.63% ✓ $20.8K
Apr 1, 2024 Apr 2, 2024 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.63% ✓ $21.7K
Mar 1, 2024 Mar 4, 2024 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.62% ✓ $22.8K
Feb 1, 2024 Feb 2, 2024 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.62% ✓ $26.5K
Jan 2, 2024 Jan 3, 2024 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.61% ✓ $30.7K
Dec 1, 2023 Dec 4, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.61% ✓ $29K
Nov 1, 2023 Nov 2, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.61% ✓ $22.7K
Oct 2, 2023 Oct 3, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.60% ✓ $22.9K
May 17, 2023 May 18, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -5,000 -5.87% ✗ $215.7K
Apr 3, 2023 Apr 4, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -491 -0.57% ✓ $18.5K
Mar 1, 2023 Mar 2, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.58% ✓ $18.3K
Feb 1, 2023 Feb 2, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.58% ✓ $15.2K
Jan 3, 2023 Jan 4, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.57% ✓ $14K
Dec 1, 2022 Dec 2, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.57% ✓ $15.1K
Nov 1, 2022 Nov 2, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.57% ✓ $15.6K
Oct 3, 2022 Oct 4, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.56% ✓ $14.3K
Sep 1, 2022 Sep 2, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.56% ✓ $14.7K
Aug 1, 2022 Aug 2, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.56% ✓ $18.7K
Jul 1, 2022 Jul 5, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.55% ✓ $17.4K
Jun 1, 2022 Jun 2, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.58% ✓ $18.5K
May 18, 2022 May 19, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -9,924 -10.30% ✗ $347.8K
May 2, 2022 May 3, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -295 -0.39% ✓ $10.4K
Apr 1, 2022 Apr 4, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.65% ✓ $18.3K
Mar 1, 2022 Mar 1, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.65% ✓ $13.6K
Feb 1, 2022 Feb 2, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.64% ✓ $12K
Jan 3, 2022 Jan 4, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.64% ✓ $11.6K
Dec 22, 2021 Dec 23, 2021 Amphastar Pharmaceuticals, Inc. Director Sell 48.8 -1,000 -1.26% ✓ $22.5K
Jun 7, 2021 Jun 8, 2021 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -9,808 -11.00% ✗ $306K
Jun 3, 2021 Jun 4, 2021 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -10,000 -12.00% ✗ $186.5K
Feb 1, 2021 Feb 2, 2021 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -639 -0.86% ✓ $11.7K
Dec 1, 2020 Dec 2, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -500 -0.67% ✓ $8.9K
Nov 2, 2020 Nov 3, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -500 -0.67% ✓ $9.9K
Oct 1, 2020 Oct 2, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -500 -0.66% ✓ $9.4K
Sep 1, 2020 Sep 2, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -500 -0.66% ✓ $9.9K
Aug 3, 2020 Aug 4, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.65% ✓ $10.3K
Jul 1, 2020 Jul 2, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.65% ✓ $11.1K
Jun 1, 2020 Jun 2, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -500 -0.70% ✓ $9.5K
May 14, 2020 May 18, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -47,682 -24.97% ✗ $867.8K
May 12, 2020 May 14, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -100 -0.14% ✗ $1.9K
May 1, 2020 May 5, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -500 -0.69% ✓ $8.3K
Apr 1, 2020 Apr 2, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -500 -0.69% ✓ $7.2K
Mar 2, 2020 Mar 3, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -500 -0.68% ✓ $7.8K
Feb 3, 2020 Feb 4, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -500 -0.68% ✓ $9.6K
Jan 2, 2020 Jan 3, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 48.8 -1,000 -1.34% ✓ $19.1K
Dec 2, 2019 Dec 4, 2019 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -500 -0.67% ✓ $9.6K
Nov 1, 2019 Nov 5, 2019 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -500 -0.66% ✓ $9.7K
Oct 1, 2019 Oct 3, 2019 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -500 -0.66% ✓ $10K
Sep 16, 2019 Sep 17, 2019 Amphastar Pharmaceuticals, Inc. Director Sell 51.3 -500 -0.65% ✓ $10.9K
Dec 3, 2018 Dec 4, 2018 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -29,278 -29.15% ✗ $657.4K
Oct 4, 2017 Oct 6, 2017 Amphastar Pharmaceuticals, Inc. Director Sell 7.5 -39,312 -37.85% ✓ $730.8K
Jan 3, 2017 Jan 4, 2017 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -400 -0.68% ✓ $7.4K
Dec 1, 2016 Dec 2, 2016 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -400 -0.67% ✓ $8.1K
Nov 1, 2016 Nov 3, 2016 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -400 -0.67% ✓ $7.2K
Oct 3, 2016 Oct 5, 2016 Amphastar Pharmaceuticals, Inc. Director Sell 52.5 -400 -0.66% ✓ $7.5K
Sep 8, 2016 Sep 12, 2016 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -3,000 -4.74% ✗ $57.2K
Nov 20, 2015 Nov 24, 2015 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -31,529 -35.52% ✗ $450.5K
Aug 15, 2014 Aug 19, 2014 Amphastar Pharmaceuticals, Inc. Director Buy 86.3 +3,200 8.33% ✗ $33.1K