Prins Richard K (CIK 0001047579)

Latest company ownership

IGC - IGC Pharma, Inc.
Role: Director
Shares held
750,000
Last filed at
Oct 22, 2025
Confidence Score
50.0
2025Q4
Confidence Score History
2017Q4 2025Q4
Shares held
4,179
Last filed at
Nov 25, 2025
Confidence Score
29.2
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)
Nov 25, 2025 Nov 25, 2025 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -4,179 -10.62% ✗ $113.3K
Dec 9, 2024 Dec 11, 2024 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -10,410 -25.72% ✗ $437.7K
Nov 12, 2024 Nov 13, 2024 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -6,000 -16.45% ✗ $244K
Aug 12, 2024 Aug 13, 2024 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -17,101 -33.48% ✗ $736.6K
Nov 17, 2023 Nov 20, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -5,000 -13.93% ✗ $223.4K
Nov 13, 2023 Nov 15, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -5,000 -12.23% ✗ $262.5K
Aug 18, 2023 Aug 21, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -2,000 -4.66% ✗ $105K
Aug 15, 2023 Aug 16, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -4,163 -8.85% ✗ $238.9K
May 12, 2023 May 16, 2023 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -13,000 -8.72% ✗ $427.8K
Mar 15, 2022 Mar 17, 2022 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -10,000 -18.12% ✗ $340.2K
Dec 10, 2021 Dec 13, 2021 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -5,291 -10.48% ✗ $113K
Nov 22, 2021 Nov 23, 2021 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -5,000 -9.96% ✗ $106.1K
Jun 4, 2021 Jun 8, 2021 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -3,981 -3.12% ✗ $187.4K
May 11, 2021 May 13, 2021 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -15,827 -28.78% ✗ $299.1K
Mar 9, 2021 Mar 10, 2021 IGC Pharma, Inc. Director Sell 22.5 -50,000 -7.46% ✗ $87.5K
Feb 10, 2021 Mar 8, 2021 IGC Pharma, Inc. Director Sell 22.5 -75,000 -10.07% ✗ $90K
Aug 13, 2020 Dec 4, 2020 IGC Pharma, Inc. Director Sell 22.5 -143,000 -16.10% ✗ $102K
Aug 11, 2020 Aug 12, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -6,000 -13.29% ✗ $122K
May 12, 2020 May 14, 2020 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -30,282 -43.51% ✗ $575.4K
Aug 23, 2019 Aug 27, 2019 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -7,500 -8.71% ✗ $169.4K
Aug 13, 2019 Aug 15, 2019 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -10,000 -20.28% ✗ $207.8K
Jun 11, 2019 Jun 12, 2019 IGC Pharma, Inc. Director Sell 87.5 +400,000 4.84% ✗ $54K
Dec 14, 2018 Dec 17, 2018 Amphastar Pharmaceuticals, Inc. Director Sell 26.3 -1,616 -4.56% ✗ $33.4K
Nov 29, 2018 Nov 30, 2018 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -5,000 -12.37% ✗ $102.5K
Nov 14, 2018 Nov 15, 2018 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -5,000 -12.37% ✗ $101.2K
Aug 14, 2018 Aug 15, 2018 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -10,000 -22.01% ✗ $178.2K
Mar 15, 2018 Mar 16, 2018 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -16,598 -36.53% ✗ $330.3K
Dec 4, 2017 Dec 5, 2017 IGC Pharma, Inc. Director Sell 26.3 -25,000 -5.69% ✗ $13.8K
Aug 14, 2017 Aug 16, 2017 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -10,000 -14.77% ✗ $148.1K
Jun 8, 2017 Jun 12, 2017 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -4,156 -6.72% ✗ $170.7K
May 11, 2017 May 12, 2017 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -7,500 -24.59% ✗ $115.7K
Nov 11, 2016 Nov 15, 2016 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -8,000 -25.81% ✗ $160.5K
Aug 18, 2016 Aug 19, 2016 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -3,086 -10.61% ✗ $60.5K
Aug 11, 2016 Aug 12, 2016 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -13,993 -32.48% ✗ $252.3K
Jun 9, 2016 Jun 13, 2016 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -1,414 -2.37% ✗ $119.5K
May 17, 2016 May 19, 2016 Amphastar Pharmaceuticals, Inc. Director Sell 26.3 -3,200 -12.21% ✗ $43.4K
Mar 17, 2016 Mar 21, 2016 Amphastar Pharmaceuticals, Inc. Director Sell 26.3 -2,400 -8.39% ✗ $27K
Aug 24, 2015 Nov 19, 2015 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -6,772 -18.96% ✗ $52.6K
Aug 17, 2015 Aug 19, 2015 Amphastar Pharmaceuticals, Inc. Director Sell 22.5 -14,500 -15.60% ✗ $212.8K
May 20, 2015 May 22, 2015 Amphastar Pharmaceuticals, Inc. Director Sell 20.0 -29,452 -21.40% ✗ $435.1K
May 19, 2015 May 20, 2015 Amphastar Pharmaceuticals, Inc. Director Sell 26.3 -3,000 -7.68% ✗ $44.8K
Aug 15, 2014 Aug 19, 2014 Amphastar Pharmaceuticals, Inc. Director Buy 91.3 +4,000 12.48% ✗ $40.1K