4
Changes in Ownership
Amphastar Pharmaceuticals, Inc. Filed Acc 0001209191-15-053033
CEO & Chief Science Officer sold 160,495 shares at an average $16.23 ($2,605,207)
- CEO & Chief Science Officer acquired 176,860 shares (option exercise)
- CEO & Chief Science Officer gave up 38,724 shares (to pay taxes)
From the SEC's structured data for this filing
Trades in this filing
| Insider | Date | Transaction | Shares | Price | Value | Owned after | D/I |
|---|---|---|---|---|---|---|---|
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-05 | Shares withheld for taxes | −4,831 | $16.46 | $79,539 | 917,306 | D |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-08 | Shares withheld for taxes | −3,046 | $16.61 | $50,606 | 914,260 | D |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-09 | Shares withheld for taxes | −2,624 | $16.24 | $42,602 | 911,636 | D |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-10 | Option exercise | +12,975 | $12.97 | $168,286 | 924,611 | D |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-10 | Sale | −11,731 | $16.38 | $192,144 | 912,880 | D |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-10 | Shares withheld for taxes | −1,244 | $16.38 | $20,376 | 911,636 | D |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-11 | Option exercise | +12,860 | $12.97 | $166,794 | 924,496 | D |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-11 | Sale | −11,600 | $16.47 | $191,045 | 912,896 | D |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-11 | Shares withheld for taxes | −1,260 | $16.47 | $20,751 | 911,636 | D |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-12 | Option exercise | +83,253 | $12.97 | $1,079,791 | 994,889 | D |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-12 | Sale | −75,618 | $16.15 | $1,221,132 | 919,271 | D |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-12 | Shares withheld for taxes | −7,635 | $16.15 | $123,295 | 911,636 | D |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-05 | Shares withheld for taxes | −6,173 | $16.47 | $101,643 | 667,351 | I |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-08 | Shares withheld for taxes | −3,052 | $16.61 | $50,690 | 664,299 | I |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-09 | Shares withheld for taxes | −2,633 | $16.23 | $42,744 | 661,666 | I |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-10 | Option exercise | +12,619 | $12.97 | $163,668 | 674,285 | I |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-10 | Sale | −11,411 | $16.37 | $186,820 | 662,874 | I |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-10 | Shares withheld for taxes | −1,208 | $16.37 | $19,777 | 661,666 | I |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-11 | Option exercise | +12,930 | $12.97 | $167,702 | 674,596 | I |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-11 | Sale | −11,664 | $16.47 | $192,093 | 662,932 | I |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-11 | Shares withheld for taxes | −1,266 | $16.47 | $20,850 | 661,666 | I |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-12 | Option exercise | +42,223 | $12.97 | $547,632 | 703,889 | I |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-12 | Sale | −38,471 | $16.17 | $621,972 | 665,418 | I |
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-12 | Shares withheld for taxes | −3,752 | $16.17 | $60,660 | 661,666 | I |
| Derivatives | |||||||
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-10 | Option exercise · Employee Stock Option (right to buy) | −12,975 | 154,655 | D | ||
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-11 | Option exercise · Employee Stock Option (right to buy) | −12,860 | 141,795 | D | ||
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-12 | Option exercise · Employee Stock Option (right to buy) | −83,253 | 58,542 | D | ||
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-10 | Option exercise · Employee Stock Option (right to buy) | −12,619 | 63,634 | I | ||
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-11 | Option exercise · Employee Stock Option (right to buy) | −12,930 | 50,704 | I | ||
| Zhang Jack Y. CEO & Chief Science Officer | 2015-06-12 | Option exercise · Employee Stock Option (right to buy) | −42,223 | 8,481 | I | ||
| Open-market sales · 160,495 sh · avg $16.23 · $2,605,207 | |||||||
Loading xslF345X03/doc4.xml…