Amphastar Pharmaceuticals, Inc. — Insider Transactions
Form 4 filings by directors, officers, and 10%+ shareholders
SEC rules require corporate insiders — including directors, executive officers, and any shareholder owning more than 10% of a company's shares — to report changes in their ownership within two business days of a transaction. These disclosures are filed as Form 4. Open-market purchases (code P) are generally considered the most meaningful signal, as insiders are spending their own money.
| Insider | Title | Type | Shares | Price | Value | Owns After | Date |
|---|---|---|---|---|---|---|---|
| Petersen Floyd F. | — | Sale | 400 | $20.26 | $8,104 | 59,117 | Dec 1, 2016 |
| Shandell Jason B. | President and General Counsel | Sale | 24,292 | $20.47 | $497,257 | 202,961 | Nov 28, 2016 |
| Lee Howard | — | Option Exercise | 20,000 | $14.23 | $284,600 | 134,527 | Nov 14, 2016 |
| PRINS RICHARD K | — | Sale | 8,000 | $20.06 | $160,480 | 23,000 | Nov 11, 2016 |
| Petersen Floyd F. | — | Sale | 400 | $18.09 | $7,236 | 59,517 | Nov 1, 2016 |
| Petersen Floyd F. | — | Sale | 400 | $18.75 | $7,500 | 59,917 | Oct 3, 2016 |
| Shandell Jason B. | President and General Counsel | Option Exercise | 56,996 | $10.93 | $622,966 | 259,957 | Sep 26, 2016 |
| Zhang Jack Y. | CEO & Chief Science Officer | Sale | 76,152 | $20.73 | $1,578,631 | 1,219,533 | Sep 20, 2016 |
| Petersen Floyd F. | — | Sale | 3,000 | $19.05 | $57,150 | 60,317 | Sep 8, 2016 |
| Lee Howard | — | Sale | 10,381 | $18.78 | $194,955 | 114,527 | Sep 1, 2016 |
| Shandell Jason B. | President and General Counsel | Option Exercise | 10,000 | $10.46 | $104,600 | 212,961 | Aug 22, 2016 |
| Gerst Diane G. | EVP, QA & Regulatory Affairs | Sale | 24,046 | $19.28 | $463,607 | 28,985 | Aug 19, 2016 |
| PRINS RICHARD K | — | Sale | 3,086 | $19.62 | $60,547 | 26,000 | Aug 18, 2016 |
| Shandell Jason B. | President and General Counsel | Sale | 5,987 | $18.86 | $112,915 | 202,961 | Aug 17, 2016 |
| Shohet Stephen B. | — | Sale | 14,788 | $18.12 | $267,959 | 18,272 | Aug 16, 2016 |
| ZASLOFF MICHAEL A | — | Option Exercise | 10,381 | $15.23 | $158,103 | 42,792 | Aug 15, 2016 |
| PETERS WILLIAM J | CFO, SVP & Treasurer | Sale | 1,027 | $18.19 | $18,681 | 63,625 | Aug 12, 2016 |
| PRINS RICHARD K | — | Option Exercise | 2,595 | $15.23 | $39,522 | 31,681 | Aug 11, 2016 |
| Shandell Jason B. | President | Sale | 5,636 | $18.01 | $101,504 | 208,948 | Aug 11, 2016 |
| PETERS WILLIAM J | CFO, SVP & Treasurer | Sale | 2,297 | $17.76 | $40,795 | 64,652 | Jul 18, 2016 |
| Shandell Jason B. | President and General Counsel | Tax Withholding | 3,394 | $16.33 | $55,424 | 214,584 | Jul 5, 2016 |
| Gerst Diane G. | EVP, QA & Regulatory Affairs | Tax Withholding | 146 | $15.76 | $2,301 | 28,985 | Jun 15, 2016 |
| Zhou Rong | EVP, Production Center | Sale | 1,551 | $15.85 | $24,583 | 37,137 | Jun 15, 2016 |
| PRINS RICHARD K | — | Award / Grant | 6,086 | — | — | 29,086 | Jun 13, 2016 |
| Shandell Jason B. | President | Sale | 9,904 | $16.43 | $162,723 | 216,610 | Jun 9, 2016 |
| Koo Richard | — | Award / Grant | 6,086 | — | — | 229,494 | Jun 9, 2016 |
| Lee Howard | — | Award / Grant | 6,086 | — | — | 114,527 | Jun 9, 2016 |
| Petersen Floyd F. | — | Award / Grant | 6,086 | — | — | 63,317 | Jun 9, 2016 |
| ZASLOFF MICHAEL A | — | Award / Grant | 6,086 | — | — | 32,411 | Jun 9, 2016 |
| Shohet Stephen B. | — | Award / Grant | 6,086 | — | — | 18,272 | Jun 9, 2016 |
| PETERS WILLIAM J | CFO, SVP & Treasurer | Sale | 2,297 | $16.00 | $36,752 | 66,949 | Jun 2, 2016 |
| Lee Howard | — | Tax Withholding | 1,460 | $15.75 | $22,995 | 108,441 | May 27, 2016 |
| Shandell Jason B. | President | Sale | 1,074 | $15.60 | $16,754 | 226,514 | May 25, 2016 |
| Gerst Diane G. | EVP, QA & Regulatory Affairs | Sale | 1,427 | $13.97 | $19,935 | 28,649 | May 18, 2016 |
| PRINS RICHARD K | — | Sale | 3,200 | $13.56 | $43,392 | 23,000 | May 17, 2016 |
| PETERS WILLIAM J | CFO, SVP & Treasurer | Tax Withholding | 1,383 | $13.05 | $18,048 | 69,246 | Apr 21, 2016 |
| Gerst Diane G. | EVP, QA & Regulatory Affairs | Option Exercise | 5,607 | $10.48 | $58,761 | 35,683 | Apr 18, 2016 |
| Gerst Diane G. | EVP, QA & Regulatory Affairs | Tax Withholding | 741 | $12.66 | $9,381 | 31,503 | Apr 14, 2016 |
| Zhang Jack Y. | CEO & Chief Science Officer | Tax Withholding | 8,641 | $11.96 | $103,346 | 752,321 | Mar 27, 2016 |
| Shandell Jason B. | President | Tax Withholding | 4,714 | $11.96 | $56,379 | 233,526 | Mar 27, 2016 |
| Zhou Rong | EVP, Production | Tax Withholding | 568 | $11.96 | $6,793 | 37,137 | Mar 26, 2016 |
| PETERS WILLIAM J | CFO, SVP & Treasurer | Tax Withholding | 1,823 | $11.96 | $21,803 | 70,629 | Mar 26, 2016 |
| Gerst Diane G. | EVP, QA & Regulatory Affairs | Tax Withholding | 614 | $11.96 | $7,343 | 32,244 | Mar 26, 2016 |
| PRINS RICHARD K | — | Sale | 2,400 | $11.25 | $27,000 | 26,200 | Mar 17, 2016 |
| Gerst Diane G. | EVP, QA & Regulatory Affairs | Award / Grant | 11,253 | — | — | 32,858 | Mar 17, 2016 |
| Zhou Rong | EVP, Production | Award / Grant | 11,473 | — | — | 37,705 | Mar 17, 2016 |
| PETERS WILLIAM J | CFO, SVP & Treasurer | Award / Grant | 39,717 | — | — | 72,452 | Mar 17, 2016 |
| Shandell Jason B. | President | Award / Grant | 75,022 | — | — | 238,240 | Mar 17, 2016 |
| Zhang Jack Y. | CEO & Chief Science Officer | Award / Grant | 184,466 | — | — | 1,129,902 | Mar 17, 2016 |
| ZASLOFF MICHAEL A | — | Sale | 16,538 | $14.19 | $234,674 | 26,325 | Dec 16, 2015 |