Rong Zhou's most recent trade in Amphastar Pharmaceuticals Inc was a trade of 1,967 Common Srock done at an average price of $27.7 . Disclosure was reported to the exchange on March 15, 2025.
| Stock | Client Name | Client Category | Action | Reported to Exchange | Quantity | Post Transaction Holding | Traded % | Avg. Price | Value | Security Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 27.69 per share. | 15 Mar 2025 | 1,967 | 137,497 (0%) | 0% | 27.7 | 54,466 | Common Srock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 26.66 per share. | 15 Mar 2025 | 1,222 | 139,464 (0%) | 0% | 26.7 | 32,579 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 10 Mar 2025 | 52,437 | 52,437 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 10 Mar 2025 | 24,692 | 140,686 (0%) | 0% | 0 | Common Srock | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 28.32 per share. | 06 Mar 2025 | 1,354 | 115,994 (0%) | 0% | 28.3 | 38,345 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 27.62 per share. | 04 Mar 2025 | 1,121 | 117,348 (0%) | 0% | 27.6 | 30,962 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 12 Dec 2024 | 8,000 | 9,787 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Sale of securities on an exchange or to another person at price $ 45.23 per share. | 12 Dec 2024 | 8,000 | 118,469 (0%) | 0% | 45.2 | 361,840 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 11.33 per share. | 12 Dec 2024 | 8,000 | 126,469 (0%) | 0% | 11.3 | 90,640 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 11.33 per share. | 12 Dec 2024 | 7,000 | 125,469 (0%) | 0% | 11.3 | 79,310 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 12 Dec 2024 | 7,000 | 17,787 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Sale of securities on an exchange or to another person at price $ 44.42 per share. | 12 Dec 2024 | 7,000 | 118,469 (0%) | 0% | 44.4 | 310,975 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.95 per share. | 12 Nov 2024 | 6,893 | 125,281 (0%) | 0% | 14.9 | 103,050 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Sale of securities on an exchange or to another person at price $ 48.88 per share. | 12 Nov 2024 | 6,893 | 118,388 (0%) | 0% | 48.9 | 336,930 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 12 Nov 2024 | 6,893 | 0 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Sale of securities on an exchange or to another person at price $ 48.26 per share. | 13 Sep 2024 | 3,000 | 118,388 (0%) | 0% | 48.3 | 144,785 | Common Srock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.95 per share. | 13 Sep 2024 | 3,000 | 121,388 (0%) | 0% | 15.0 | 44,850 | Common Srock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 13 Sep 2024 | 3,000 | 6,893 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Sale of securities on an exchange or to another person at price $ 48.35 per share. | 26 Aug 2024 | 4,000 | 118,388 (0%) | 0% | 48.4 | 193,400 | Common Srock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.95 per share. | 26 Aug 2024 | 4,000 | 122,388 (0%) | 0% | 15.0 | 59,800 | Common Srock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 26 Aug 2024 | 4,000 | 9,893 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 43.05 per share. | 15 Mar 2024 | 2,355 | 119,977 (0%) | 0% | 43.1 | 101,383 | Common Srock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 43.05 per share. | 15 Mar 2024 | 1,961 | 118,016 (0%) | 0% | 43.0 | 84,421 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 43.05 per share. | 15 Mar 2024 | 1,219 | 122,332 (0%) | 0% | 43.1 | 52,478 | Common Srock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 46.31 per share. | 06 Mar 2024 | 1,390 | 123,551 (0%) | 0% | 46.3 | 64,371 | Common Srock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 04 Mar 2024 | 26,378 | 26,378 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | SENIOR EVP, PRODUCTION CENTER | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 04 Mar 2024 | 12,521 | 124,941 (0%) | 0% | 0 | Common Srock | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | Senior EVP, Production Center | Sale of securities on an exchange or to another person at price $ 58.58 per share. | 01 Dec 2023 | 4,316 | 112,420 (0%) | 0% | 58.6 | 252,831 | Common Stock |
| Amphastar Pharmaceuticals Inc | Zhou Rong | Senior EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 01 Dec 2023 | 4,316 | 0 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Zhou Rong | Senior EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.40 per share. | 01 Dec 2023 | 4,316 | 116,736 (0%) | 0% | 14.4 | 62,150 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | Senior EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 16.19 per share. | 01 Dec 2023 | 3,514 | 115,934 (0%) | 0% | 16.2 | 56,892 | Common Stock |
| Amphastar Pharmaceuticals Inc | Zhou Rong | Senior EVP, Production Center | Sale of securities on an exchange or to another person at price $ 59.58 per share. | 01 Dec 2023 | 3,514 | 112,420 (0%) | 0% | 59.6 | 209,364 | Common Stock |
| Amphastar Pharmaceuticals Inc | Zhou Rong | Senior EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 01 Dec 2023 | 3,514 | 0 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 11.33 per share. | 20 Jun 2023 | 9,651 | 112,341 (0%) | 0% | 11.3 | 109,346 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 20 Jun 2023 | 9,651 | 24,787 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 15 Jun 2023 | 13,575 | 4,316 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.40 per share. | 15 Jun 2023 | 13,575 | 101,888 (0%) | 0% | 14.4 | 195,480 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Sale of securities on an exchange or to another person at price $ 51.79 per share. | 15 Jun 2023 | 5,000 | 96,888 (0%) | 0% | 51.8 | 258,947 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 15 Jun 2023 | 4,631 | 13,893 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.95 per share. | 15 Jun 2023 | 4,631 | 101,519 (0%) | 0% | 14.9 | 69,233 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 15 Jun 2023 | 1,171 | 3,514 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 16.19 per share. | 15 Jun 2023 | 1,171 | 102,690 (0%) | 0% | 16.2 | 18,958 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Sale of securities on an exchange or to another person at price $ 44.20 per share. | 18 May 2023 | 10,000 | 87,598 (0%) | 0% | 44.2 | 442,050 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 18 May 2023 | 10,000 | 22,891 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.40 per share. | 18 May 2023 | 10,000 | 97,598 (0%) | 0% | 14.4 | 144,000 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Payment of exercise price or tax liability using portion of securities received from the company at price $ 37.60 per share. | 16 Mar 2023 | 2,283 | 89,499 (0%) | 0% | 37.6 | 85,841 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Payment of exercise price or tax liability using portion of securities received from the company at price $ 36.29 per share. | 16 Mar 2023 | 1,901 | 87,598 (0%) | 0% | 36.3 | 68,987 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Payment of exercise price or tax liability using portion of securities received from the company at price $ 36.84 per share. | 15 Mar 2023 | 2,057 | 91,782 (0%) | 0% | 36.8 | 75,780 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 06 Mar 2023 | 31,882 | 31,882 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 06 Mar 2023 | 15,129 | 93,839 (0%) | 0% | 0 | Common Stock | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Payment of exercise price or tax liability using portion of securities received from the company at price $ 34.18 per share. | 16 Mar 2022 | 2,447 | 77,583 (0%) | 0% | 34.2 | 83,638 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Payment of exercise price or tax liability using portion of securities received from the company at price $ 34.22 per share. | 16 Mar 2022 | 2,283 | 80,030 (0%) | 0% | 34.2 | 78,124 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 15 Mar 2022 | 31,516 | 31,516 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 15 Mar 2022 | 13,658 | 83,965 (0%) | 0% | 0 | Common Stock | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Payment of exercise price or tax liability using portion of securities received from the company at price $ 34.74 per share. | 15 Mar 2022 | 1,652 | 82,313 (0%) | 0% | 34.7 | 57,390 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Sale of securities on an exchange or to another person at price $ 28.77 per share. | 25 Feb 2022 | 13,246 | 70,307 (0%) | 0% | 28.8 | 381,087 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 10.93 per share. | 25 Feb 2022 | 7,000 | 83,553 (0%) | 0% | 10.9 | 76,510 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 25 Feb 2022 | 7,000 | 0 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Sale of securities on an exchange or to another person at price $ 26.77 per share. | 08 Feb 2022 | 7,000 | 76,553 (0%) | 0% | 26.8 | 187,390 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 10.93 per share. | 08 Feb 2022 | 7,000 | 83,553 (0%) | 0% | 10.9 | 76,510 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 08 Feb 2022 | 7,000 | 7,000 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 10.93 per share. | 10 Jan 2022 | 14,000 | 97,481 (0%) | 0% | 10.9 | 153,020 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 10 Jan 2022 | 14,000 | 14,000 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Sale of securities on an exchange or to another person at price $ 24.96 per share. | 10 Jan 2022 | 10,677 | 86,804 (0%) | 0% | 25.0 | 266,528 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Sale of securities on an exchange or to another person at price $ 25.77 per share. | 10 Jan 2022 | 10,251 | 76,553 (0%) | 0% | 25.8 | 264,156 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Sale of securities on an exchange or to another person at price $ 21.24 per share. | 02 Aug 2021 | 9,123 | 83,121 (0%) | 0% | 21.2 | 193,734 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 02 Aug 2021 | 6,000 | 7,813 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 10.48 per share. | 02 Aug 2021 | 6,000 | 92,244 (0%) | 0% | 10.5 | 62,880 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Sale of securities on an exchange or to another person at price $ 20.87 per share. | 26 Jul 2021 | 6,000 | 86,244 (0%) | 0% | 20.9 | 125,220 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 26 Jul 2021 | 6,000 | 13,813 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 10.48 per share. | 26 Jul 2021 | 6,000 | 92,244 (0%) | 0% | 10.5 | 62,880 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Sale of securities on an exchange or to another person at price $ 20.57 per share. | 20 Jul 2021 | 5,187 | 86,244 (0%) | 0% | 20.6 | 106,697 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 20 Jul 2021 | 5,187 | 19,813 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 10.48 per share. | 20 Jul 2021 | 5,187 | 91,431 (0%) | 0% | 10.5 | 54,360 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.23 per share. | 08 Jun 2021 | 8,180 | 99,156 (0%) | 0% | 14.2 | 116,401 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 08 Jun 2021 | 8,180 | 0 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Sale of securities on an exchange or to another person at price $ 19.34 per share. | 08 Jun 2021 | 8,180 | 90,976 (0%) | 0% | 19.3 | 158,177 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Sale of securities on an exchange or to another person at price $ 19.58 per share. | 08 Jun 2021 | 4,732 | 86,244 (0%) | 0% | 19.6 | 92,653 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 16 Mar 2021 | 51,621 | 51,621 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 16 Mar 2021 | 21,984 | 96,265 (0%) | 0% | 0 | Common Stock | |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Payment of exercise price or tax liability using portion of securities received from the company at price $ 18.44 per share. | 16 Mar 2021 | 3,303 | 74,281 (0%) | 0% | 18.4 | 60,907 | Common Stock |
| Amphastar Pharmaceuticals Inc | Rong Zhou | EVP, Production Center | Payment of exercise price or tax liability using portion of securities received from the company at price $ 19.15 per share. | 15 Mar 2021 | 1,652 | 77,584 (0%) | 0% | 19.2 | 31,636 | Common Stock |