Amphastar Pharmaceuticals, Inc. engages in developing, manufacturing, marketing, and selling technically challenging generic and proprietary injectable, inhalation, and intranasal products, and insulin active pharmaceutical ingredient. It operates through Finished Pharmaceutical Products and Active Pharmaceutical Ingredients Products segments. The Finished Pharmaceutical Products segment manufactures, markets, and distributes Primatene Mist, enoxaparin, naloxone, phytonadione, lidocaine, and other critical and non-critical care drugs. The Active Pharmaceutical Ingredients Products segment offers RHI API and porcine insulin API for external customers and internal product development. The company was founded by Zi-Ping Luo and Yong Feng Zhang on February 29, 1996 and is headquartered in Rancho Cucamonga, CA. |
Insider Trading |
Relationship |
Date |
Transaction |
Cost |
#Shares |
Value ($) |
#Shares Total |
SEC Form 4 |
Petersen Floyd F. | Director | May 01 '24 | Sale | 41.67 | 500 | 20,837 | 78,833 | May 02 04:56 PM | Petersen Floyd F. | Director | Apr 01 '24 | Sale | 43.43 | 500 | 21,714 | 79,333 | Apr 02 09:31 PM | Zhang Jack Y. | CEO & Chief Scientific Officer | Mar 15 '24 | Option Exercise | 12.46 | 722,046 | 8,996,693 | 2,858,043 | Mar 19 06:55 PM | Zhang Jack Y. | CEO & Chief Scientific Officer | Mar 15 '24 | Option Exercise | 12.46 | 310,930 | 3,874,188 | 1,439,466 | Mar 19 06:55 PM | PETERS WILLIAM J | CFO, EVP & TREASURER | Mar 06 '24 | Option Exercise | 11.33 | 8,826 | 99,999 | 129,626 | Mar 08 04:52 PM | PETERS WILLIAM J | CFO, EVP & TREASURER | Mar 06 '24 | Sale | 46.48 | 18,136 | 842,883 | 111,490 | Mar 08 04:52 PM | ZASLOFF MICHAEL A | Director | Mar 05 '24 | Sale | 47.18 | 12,500 | 589,724 | 21,326 | Mar 06 05:57 PM | Petersen Floyd F. | Director | Mar 01 '24 | Sale | 45.69 | 500 | 22,847 | 79,833 | Mar 04 08:35 PM | Petersen Floyd F. | Director | Feb 01 '24 | Sale | 53.10 | 500 | 26,548 | 80,333 | Feb 02 07:37 PM | Luo Mary Z. | COO,Chief Scientist & Chairman | Jan 10 '24 | Sale | 54.59 | 131,386 | 7,171,768 | 1,104,416 | Jan 11 04:37 PM | Luo Mary Z. | COO,Chief Scientist & Chairman | Jan 09 '24 | Sale | 57.14 | 86,156 | 4,923,232 | 1,235,802 | Jan 10 06:27 PM | Luo Mary Z. | COO,Chief Scientist & Chairman | Jan 08 '24 | Sale | 58.93 | 133,644 | 7,875,476 | 1,321,958 | Jan 10 06:27 PM | Petersen Floyd F. | Director | Jan 02 '24 | Sale | 61.37 | 500 | 30,683 | 80,833 | Jan 03 07:25 PM | Zhou Rong | Senior EVP, Production Center | Dec 04 '23 | Option Exercise | 16.19 | 3,514 | 56,892 | 115,934 | Dec 05 06:25 PM | Zhou Rong | Senior EVP, Production Center | Dec 04 '23 | Sale | 59.58 | 3,514 | 209,364 | 112,420 | Dec 05 06:25 PM | Zhou Rong | Senior EVP, Production Center | Dec 01 '23 | Option Exercise | 14.40 | 4,316 | 62,150 | 116,736 | Dec 05 06:25 PM | Zhou Rong | Senior EVP, Production Center | Dec 01 '23 | Sale | 58.58 | 4,316 | 252,831 | 112,420 | Dec 05 06:25 PM | Petersen Floyd F. | Director | Dec 01 '23 | Sale | 57.90 | 500 | 28,952 | 81,333 | Dec 04 08:49 PM | PRINS RICHARD K | Director | Nov 17 '23 | Sale | 55.86 | 4,000 | 223,446 | 31,895 | Nov 20 05:23 PM | PETERS WILLIAM J | CFO, EVP & Treasurer | Nov 14 '23 | Option Exercise | 15.61 | 59,250 | 925,028 | 160,610 | Nov 16 04:05 PM | PETERS WILLIAM J | CFO, EVP & Treasurer | Nov 14 '23 | Sale | 55.67 | 59,250 | 3,298,475 | 101,360 | Nov 16 04:05 PM | Deflin Gayle | Director | Nov 14 '23 | Sale | 55.45 | 4,163 | 230,838 | 2,716 | Nov 15 04:30 PM | PRINS RICHARD K | Director | Nov 13 '23 | Sale | 52.50 | 5,000 | 262,500 | 35,895 | Nov 15 04:31 PM | Petersen Floyd F. | Director | Nov 01 '23 | Sale | 45.30 | 500 | 22,651 | 81,833 | Nov 02 08:37 PM | Petersen Floyd F. | Director | Oct 02 '23 | Sale | 45.78 | 500 | 22,890 | 82,333 | Oct 03 06:38 PM | PETERS WILLIAM J | CFO, EVP & Treasurer | Sep 06 '23 | Option Exercise | 16.93 | 56,500 | 956,795 | 162,103 | Sep 08 04:08 PM | PETERS WILLIAM J | CFO, EVP & Treasurer | Sep 06 '23 | Sale | 51.75 | 60,743 | 3,143,195 | 101,360 | Sep 08 04:08 PM | Liawatidewi Yakob | EVP Corp Admin Center | Aug 28 '23 | Option Exercise | 14.86 | 28,816 | 428,095 | 98,485 | Aug 29 06:54 PM | Liawatidewi Yakob | EVP Corp Admin Center | Aug 28 '23 | Sale | 53.13 | 28,816 | 1,530,994 | 69,669 | Aug 29 06:54 PM | PRINS RICHARD K | Director | Aug 18 '23 | Sale | 52.50 | 2,000 | 105,006 | 40,895 | Aug 21 04:05 PM | ZASLOFF MICHAEL A | Director | Aug 15 '23 | Sale | 57.22 | 12,759 | 730,025 | 33,826 | Aug 16 08:23 PM | PRINS RICHARD K | Director | Aug 15 '23 | Sale | 57.39 | 4,163 | 238,911 | 42,895 | Aug 16 08:22 PM | Zhou Rong | EVP, Production Center | Jun 20 '23 | Option Exercise | 11.33 | 9,651 | 109,346 | 112,341 | Jun 21 05:05 PM | PETERS WILLIAM J | CFO, EVP & Treasurer | Jun 15 '23 | Option Exercise | 19.79 | 36,868 | 729,618 | 142,471 | Jun 20 04:01 PM | Zhou Rong | EVP, Production Center | Jun 15 '23 | Option Exercise | 14.64 | 19,377 | 283,672 | 102,690 | Jun 20 04:05 PM | PETERS WILLIAM J | CFO, EVP & Treasurer | Jun 15 '23 | Sale | 50.85 | 36,868 | 1,874,790 | 105,603 | Jun 20 04:01 PM | Zhou Rong | EVP, Production Center | Jun 15 '23 | Sale | 51.79 | 5,000 | 258,946 | 96,888 | Jun 20 04:05 PM | Zhou Rong | EVP, Production Center | Jun 13 '23 | Option Exercise | 14.40 | 5,000 | 72,000 | 93,313 | Jun 14 05:36 PM | Zhou Rong | EVP, Production Center | Jun 13 '23 | Sale | 48.24 | 5,000 | 241,200 | 88,313 | Jun 14 05:36 PM | PETERS WILLIAM J | CFO, EVP & Treasurer | Jun 02 '23 | Option Exercise | 13.35 | 11,000 | 146,850 | 116,603 | Jun 05 05:06 PM | PETERS WILLIAM J | CFO, EVP & Treasurer | Jun 02 '23 | Sale | 46.35 | 11,000 | 509,859 | 105,603 | Jun 05 05:06 PM | Lee Howard | Director | Jun 01 '23 | Option Exercise | 16.69 | 16,679 | 278,373 | 159,618 | Jun 05 04:18 PM | Lee Howard | Director | Jun 01 '23 | Sale | 45.02 | 16,679 | 750,960 | 142,939 | Jun 05 04:18 PM | Zhou Rong | EVP, Production Center | May 18 '23 | Option Exercise | 14.40 | 10,000 | 144,000 | 97,598 | May 19 06:36 PM | PETERS WILLIAM J | CFO, EVP & Treasurer | May 18 '23 | Option Exercise | 13.35 | 10,500 | 140,175 | 115,648 | May 22 06:49 PM | PETERS WILLIAM J | CFO, EVP & Treasurer | May 18 '23 | Sale | 44.35 | 10,500 | 465,675 | 105,148 | May 22 06:49 PM | Zhou Rong | EVP, Production Center | May 18 '23 | Sale | 44.20 | 10,000 | 442,050 | 87,598 | May 19 06:36 PM | Deflin Gayle | Director | May 18 '23 | Sale | 44.01 | 4,519 | 198,888 | 4,163 | May 19 06:30 PM | Petersen Floyd F. | Director | May 17 '23 | Sale | 43.13 | 5,000 | 215,655 | 80,117 | May 18 04:52 PM | PRINS RICHARD K | Director | May 15 '23 | Option Exercise | 16.69 | 5,000 | 83,450 | 49,342 | May 16 07:59 PM | ZASLOFF MICHAEL A | Director | May 15 '23 | Sale | 42.18 | 7,500 | 316,335 | 43,869 | May 16 08:01 PM | PRINS RICHARD K | Director | May 15 '23 | Sale | 43.50 | 5,000 | 217,502 | 44,342 | May 16 07:59 PM | Deflin Gayle | Director | May 15 '23 | Sale | 43.15 | 1,500 | 64,728 | 8,682 | May 17 04:05 PM | PRINS RICHARD K | Director | May 12 '23 | Option Exercise | 16.69 | 5,000 | 83,450 | 52,342 | May 16 07:59 PM | PRINS RICHARD K | Director | May 12 '23 | Sale | 42.06 | 5,000 | 210,322 | 47,342 | May 16 07:59 PM |
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