What Amphastar Pharmaceuticals, Inc.'s executives and directors are doing with their own shares, from SEC Form 3/4/5 filings — separating what the filings state (awards, withholding, disclosed plans) from what only the pattern of dates shows.
| 3 months | 12 months | |
|---|---|---|
| Open-market buys | 0 | 0 |
| Sells | 5 | 11 |
| Total trades | 7 | 49 |
| 3 months | 12 months | |
|---|---|---|
| Acquired | 15,053 | 449,551 |
| Disposed | 33,479 | 140,572 |
| Net activity | −18,426 | +308,979 |
Common stock only — 1 reported trade in the last 12 months is in a security these totals do not cover.
View rich charts and dive into the patterns of specific insiders — who is accumulating, who is winding down, and which sale explanations the filings actually support.
| Insider | Relation | Date | Transaction | Shares | Price | Value | Shares held |
|---|---|---|---|---|---|---|---|
| Peters William J | CFO, EVP & TREASURER | Sep 21 | Open-market sale · S | −4,139 | $25.00 | −$103K | 168,707 |
| Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Sep 16 | Open-market sale · S | −10,000 | $23.94 | −$239K | 169,203 |
| Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Sep 16 | Exercise / conversion · M | +10,000 | $13.35 | +$134K | 179,203 |
| Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Sep 02 | Open-market sale · S | −3,187 | $23.63 | −$75.3K | 169,203 |
| Prins Richard K | Director | Aug 11 | Open-market sale · S | −7,973 | $20.30 | −$162K | 29,625 |
| Peters William J | CFO, EVP & TREASURER | Aug 07 | Open-market sale · S | −8,180 | $22.48 | −$184K | 172,846 |
| Peters William J | CFO, EVP & TREASURER | Aug 07 | Exercise / conversion · M | +5,053 | $19.79 | +$100K | 181,026 |
| Pierce Anthony T | Director | Jul 09 | Grant / award · A | +7,886 | — | — | 7,886 |
| Lee Howard | Director | Jun 02 | Withheld — tax / exercise cost · F | −769 | $18.45 | −$14.2K | 159,350 |
| Zasloff Michael A | Director | Jun 01 | Grant / award · A | +8,143 | — | — | 37,667 |
| Prins Richard K | Director | Jun 01 | Grant / award · A | +8,143 | — | — | 37,598 |
| Lee Howard | Director | Jun 01 | Grant / award · A | +8,143 | — | — | 160,119 |
| Gerst Diane G. | Director | Jun 01 | Grant / award · A | +8,143 | — | — | 31,899 |
| Deflin Gayle | Director | Jun 01 | Grant / award · A | +8,143 | — | — | 19,057 |
| Gaugh David Russell | Director | Jun 01 | Grant / award · A | +8,143 | — | — | 14,447 |
| Liawatidewi Yakob | EVP CORP ADMIN CENTER | Mar 15 | Withheld — tax / exercise cost · F | −1,033 | $18.18 | −$18.8K | 121,892 |
| Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER | Mar 15 | Withheld — tax / exercise cost · F | −2,908 | $18.18 | −$52.9K | 1,245,125 |
| Zhang Jack Y. | CEO & CHIEF SCIENTIFIC OFFICER | Mar 15 | Withheld — tax / exercise cost · F | −9,784 | $18.18 | −$178K | 2,990,052 |
| Peters William J | CFO, EVP & TREASURER | Mar 15 | Withheld — tax / exercise cost · F | −1,973 | $18.18 | −$35.9K | 175,063 |
| Zhou Rong | SENIOR EVP, PRODUCTION CENTER | Mar 15 | Withheld — tax / exercise cost · F | −1,225 | $18.18 | −$22.3K | 171,554 |
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