William J. Peters's most recent trade in Amphastar Pharmaceuticals Inc was a trade of 273 Common Stock done at an average price of $24.8 . Disclosure was reported to the exchange on May 19, 2025.
| Stock | Client Name | Client Category | Action | Reported to Exchange | Quantity | Post Transaction Holding | Traded % | Avg. Price | Value | Security Type |
|---|---|---|---|---|---|---|---|---|---|---|
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 24.79 per share. | 19 May 2025 | 273 | 124,985 (0%) | 0% | 24.8 | 6,768 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 27.69 per share. | 15 Mar 2025 | 3,004 | 125,258 (0%) | 0% | 27.7 | 83,181 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 26.66 per share. | 15 Mar 2025 | 1,968 | 128,262 (0%) | 0% | 26.7 | 52,467 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 10 Mar 2025 | 78,039 | 78,039 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 10 Mar 2025 | 36,747 | 130,230 (0%) | 0% | 0 | Common Stock | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 28.32 per share. | 06 Mar 2025 | 2,141 | 93,483 (0%) | 0% | 28.3 | 60,633 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 13.35 per share. | 04 Mar 2025 | 7,490 | 101,594 (0%) | 0% | 13.4 | 99,992 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 04 Mar 2025 | 7,490 | 0 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Sale of securities on an exchange or to another person at price $ 27.54 per share. | 04 Mar 2025 | 4,231 | 97,363 (0%) | 0% | 27.5 | 116,515 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 27.62 per share. | 04 Mar 2025 | 1,739 | 95,624 (0%) | 0% | 27.6 | 48,031 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Sale of securities on an exchange or to another person at price $ 52.05 per share. | 06 Nov 2024 | 7,426 | 94,103 (0%) | 0% | 52.0 | 386,523 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 06 Nov 2024 | 7,426 | 23,674 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 13.03 per share. | 06 Nov 2024 | 7,426 | 101,529 (0%) | 0% | 13.0 | 96,761 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Sale of securities on an exchange or to another person at price $ 44.23 per share. | 31 Jul 2024 | 10,282 | 94,103 (0%) | 0% | 44.2 | 454,773 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 31 Jul 2024 | 10,282 | 4,943 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 20.23 per share. | 31 Jul 2024 | 10,282 | 104,385 (0%) | 0% | 20.2 | 208,005 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Sale of securities on an exchange or to another person at price $ 40.85 per share. | 27 Jun 2024 | 2,961 | 94,738 (0%) | 0% | 40.8 | 120,947 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Sale of securities on an exchange or to another person at price $ 41.29 per share. | 27 Jun 2024 | 635 | 94,103 (0%) | 0% | 41.3 | 26,222 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 43.48 per share. | 19 May 2024 | 387 | 97,268 (0%) | 0% | 43.5 | 16,827 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 43.05 per share. | 15 Mar 2024 | 5,105 | 101,910 (0%) | 0% | 43.0 | 219,770 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 43.05 per share. | 15 Mar 2024 | 4,255 | 97,655 (0%) | 0% | 43.1 | 183,178 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 43.05 per share. | 15 Mar 2024 | 2,285 | 107,015 (0%) | 0% | 43.0 | 98,369 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Sale of securities on an exchange or to another person at price $ 46.30 per share. | 06 Mar 2024 | 13,404 | 116,222 (0%) | 0% | 46.3 | 620,540 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 11.33 per share. | 06 Mar 2024 | 8,826 | 129,626 (0%) | 0% | 11.3 | 99,999 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 06 Mar 2024 | 8,826 | 0 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Sale of securities on an exchange or to another person at price $ 46.98 per share. | 06 Mar 2024 | 4,681 | 111,541 (0%) | 0% | 47.0 | 219,896 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Payment of exercise price or tax liability using portion of securities received from the company at price $ 46.31 per share. | 06 Mar 2024 | 2,190 | 109,300 (0%) | 0% | 46.3 | 101,419 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Sale of securities on an exchange or to another person at price $ 48.00 per share. | 06 Mar 2024 | 51 | 111,490 (0%) | 0% | 48 | 2,448 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 04 Mar 2024 | 40,955 | 40,955 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & TREASURER | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 04 Mar 2024 | 19,440 | 120,800 (0%) | 0% | 0 | Common Stock | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 15 Jun 2023 | 36,868 | 15,053 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 19.79 per share. | 15 Jun 2023 | 36,868 | 142,471 (0%) | 0% | 19.8 | 729,618 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 52.79 per share. | 15 Jun 2023 | 13,000 | 105,603 (0%) | 0% | 52.8 | 686,270 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 50.79 per share. | 15 Jun 2023 | 12,000 | 118,603 (0%) | 0% | 50.8 | 609,480 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 48.79 per share. | 15 Jun 2023 | 11,868 | 130,603 (0%) | 0% | 48.8 | 579,040 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 46.35 per share. | 02 Jun 2023 | 11,000 | 105,603 (0%) | 0% | 46.4 | 509,859 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 02 Jun 2023 | 11,000 | 7,490 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 13.35 per share. | 02 Jun 2023 | 11,000 | 116,603 (0%) | 0% | 13.4 | 146,850 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 44.35 per share. | 18 May 2023 | 10,500 | 105,148 (0%) | 0% | 44.4 | 465,675 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 18 May 2023 | 10,500 | 18,490 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 13.35 per share. | 18 May 2023 | 10,500 | 115,648 (0%) | 0% | 13.4 | 140,175 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Payment of exercise price or tax liability using portion of securities received from the company at price $ 44.16 per share. | 18 May 2023 | 378 | 104,770 (0%) | 0% | 44.2 | 16,692 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 17 Apr 2023 | 5,632 | 28,990 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 13.35 per share. | 17 Apr 2023 | 5,632 | 110,780 (0%) | 0% | 13.3 | 75,187 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 42.35 per share. | 17 Apr 2023 | 5,632 | 105,148 (0%) | 0% | 42.3 | 238,515 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 42.35 per share. | 13 Apr 2023 | 4,868 | 105,148 (0%) | 0% | 42.4 | 206,160 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 13.35 per share. | 13 Apr 2023 | 4,868 | 110,016 (0%) | 0% | 13.4 | 64,988 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 13 Apr 2023 | 4,868 | 34,622 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 13.35 per share. | 10 Apr 2023 | 10,032 | 115,180 (0%) | 0% | 13.3 | 133,927 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 10 Apr 2023 | 10,032 | 39,490 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | Director, CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 40.35 per share. | 10 Apr 2023 | 10,032 | 105,148 (0%) | 0% | 40.3 | 404,791 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Payment of exercise price or tax liability using portion of securities received from the company at price $ 37.60 per share. | 16 Mar 2023 | 4,995 | 109,310 (0%) | 0% | 37.6 | 187,812 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Payment of exercise price or tax liability using portion of securities received from the company at price $ 36.29 per share. | 16 Mar 2023 | 4,162 | 105,148 (0%) | 0% | 36.3 | 151,039 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 36.43 per share. | 15 Mar 2023 | 12,776 | 118,451 (0%) | 0% | 36.4 | 465,472 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.95 per share. | 15 Mar 2023 | 6,688 | 131,227 (0%) | 0% | 15.0 | 99,986 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 15 Mar 2023 | 6,688 | 0 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Payment of exercise price or tax liability using portion of securities received from the company at price $ 36.84 per share. | 15 Mar 2023 | 4,146 | 114,305 (0%) | 0% | 36.8 | 152,739 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 06 Mar 2023 | 50,416 | 50,416 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 06 Mar 2023 | 23,925 | 124,539 (0%) | 0% | 0 | Common Stock | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 36.33 per share. | 01 Mar 2023 | 10,974 | 100,614 (0%) | 0% | 36.3 | 398,685 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 01 Mar 2023 | 10,974 | 8,826 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 11.33 per share. | 01 Mar 2023 | 10,974 | 111,588 (0%) | 0% | 11.3 | 124,335 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 09 Aug 2022 | 10,000 | 49,522 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 38.35 per share. | 09 Aug 2022 | 10,000 | 100,480 (0%) | 0% | 38.4 | 383,500 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 13.35 per share. | 09 Aug 2022 | 10,000 | 110,480 (0%) | 0% | 13.4 | 133,500 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 30 Jun 2022 | 18,386 | 6,688 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 34.95 per share. | 30 Jun 2022 | 18,386 | 100,480 (0%) | 0% | 35.0 | 642,591 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.95 per share. | 30 Jun 2022 | 18,386 | 118,866 (0%) | 0% | 15.0 | 274,871 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 32.05 per share. | 17 Jun 2022 | 5,512 | 100,480 (0%) | 0% | 32.1 | 176,682 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Payment of exercise price or tax liability using portion of securities received from the company at price $ 33.70 per share. | 19 May 2022 | 378 | 104,609 (0%) | 0% | 33.7 | 12,739 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.40 per share. | 16 Mar 2022 | 50,777 | 164,921 (0%) | 0% | 14.4 | 731,189 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 16 Mar 2022 | 50,777 | 0 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 33.93 per share. | 16 Mar 2022 | 47,017 | 117,904 (0%) | 0% | 33.9 | 1,595,230 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Payment of exercise price or tax liability using portion of securities received from the company at price $ 34.22 per share. | 16 Mar 2022 | 4,995 | 109,149 (0%) | 0% | 34.2 | 170,929 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Payment of exercise price or tax liability using portion of securities received from the company at price $ 34.18 per share. | 16 Mar 2022 | 4,162 | 104,987 (0%) | 0% | 34.2 | 142,257 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 34.36 per share. | 16 Mar 2022 | 3,760 | 114,144 (0%) | 0% | 34.4 | 129,197 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 15 Mar 2022 | 50,743 | 50,743 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Grant, award, or other acquisition of securities at price $ 0.00 per share. | 15 Mar 2022 | 21,991 | 120,133 (0%) | 0% | 0 | Common Stock | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 34.46 per share. | 15 Mar 2022 | 7,900 | 98,142 (0%) | 0% | 34.5 | 272,248 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Payment of exercise price or tax liability using portion of securities received from the company at price $ 34.74 per share. | 15 Mar 2022 | 5,989 | 114,144 (0%) | 0% | 34.7 | 208,058 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 13.35 per share. | 07 Mar 2022 | 13,026 | 119,068 (0%) | 0% | 13.3 | 173,897 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 07 Mar 2022 | 13,026 | 59,522 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 29.35 per share. | 07 Mar 2022 | 13,026 | 106,042 (0%) | 0% | 29.3 | 382,313 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 25 Feb 2022 | 23,000 | 25,074 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.95 per share. | 25 Feb 2022 | 23,000 | 129,042 (0%) | 0% | 15.0 | 343,850 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 28.95 per share. | 25 Feb 2022 | 12,000 | 106,042 (0%) | 0% | 29.0 | 347,400 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 27.95 per share. | 25 Feb 2022 | 11,000 | 118,042 (0%) | 0% | 28.0 | 307,450 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.95 per share. | 08 Feb 2022 | 10,000 | 116,042 (0%) | 0% | 15.0 | 149,500 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 08 Feb 2022 | 10,000 | 48,074 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 26.95 per share. | 08 Feb 2022 | 10,000 | 106,042 (0%) | 0% | 27.0 | 269,500 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.40 per share. | 07 Jan 2022 | 31,776 | 137,818 (0%) | 0% | 14.4 | 457,574 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 07 Jan 2022 | 31,776 | 66,777 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 24.15 per share. | 07 Jan 2022 | 20,000 | 117,818 (0%) | 0% | 24.2 | 483,000 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 07 Jan 2022 | 16,000 | 50,777 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 25.40 per share. | 07 Jan 2022 | 16,000 | 106,042 (0%) | 0% | 25.4 | 406,400 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.40 per share. | 07 Jan 2022 | 16,000 | 122,042 (0%) | 0% | 14.4 | 230,400 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 24.90 per share. | 07 Jan 2022 | 11,776 | 106,042 (0%) | 0% | 24.9 | 293,222 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 0.00 per share. | 21 Dec 2021 | 8,256 | 108,553 | - | - | Employee Stock Option (right to buy) | |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 22.40 per share. | 21 Dec 2021 | 8,256 | 106,042 (0%) | 0% | 22.4 | 184,934 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Exercise or conversion of derivative security received from the company (such as an option) at price $ 14.40 per share. | 21 Dec 2021 | 8,256 | 114,298 (0%) | 0% | 14.4 | 118,886 | Common Stock |
| Amphastar Pharmaceuticals Inc | William J. Peters | CFO, EVP & Treasurer | Sale of securities on an exchange or to another person at price $ 19.35 per share. | 16 Aug 2021 | 6,589 | 105,689 (0%) | 0% | 19.4 | 127,524 | Common Stock |