Insider · CIK 0001611157
Jack Y. Zhang
Files at: AMPH. On EDGAR ↗
Reported trades — common stock
| Trade | Reported (ET) | Company | Shares | Avg price | Total | Owned after | Δ stake | Flags |
|---|---|---|---|---|---|---|---|---|
| Dec 14, 2018 SForm 4 → | Dec 17, 8:02 pm EST | Amphastar Pharmaceuticals, Inc.AMPH | 43,577 | $20.48 | $892,309 | 2,072,317 | −2.06% | plan? |
| Dec 11, 2018 SForm 4 → | Dec 13, 8:08 pm EST | Amphastar Pharmaceuticals, Inc.AMPH | 133,915 | $21.29 | $2,851,052 | 7,327,679 | −1.79% | plan? |
| Jul 2, 2018 FMForm 4 → | Jul 3, 5:06 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 956,820 | $13.61 | $13,020,626 | 1,366,706 | — | plan? |
| May 15, 2018 PForm 4 → | May 17, 7:05 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 40,000 | $16.07 | $642,824 | 2,080,619 | +1.96% | plan? |
| Mar 26, 2018 FForm 4 → | Mar 28, 5:21 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 29,572 | $18.61 | $550,335 | 1,346,129 | — | plan? |
| Mar 16, 2018 FForm 4 → | Mar 20, 8:00 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 67,207 | $19.91 | $1,338,091 | 1,354,973 | — | plan? |
| Mar 15, 2018 AForm 4 → | Mar 16, 6:13 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 139,716 | — | — | 1,372,333 | — | plan? |
| Dec 15, 2017 FMForm 4 → | Dec 19, 6:25 pm EST | Amphastar Pharmaceuticals, Inc.AMPH | 1,842,764 | $15.30 | $28,196,109 | 1,330,646 | — | plan? |
| Nov 13, 2017 MForm 4 → | Nov 14, 7:39 pm EST | Amphastar Pharmaceuticals, Inc.AMPH | 506,337 | $12.02 | $6,087,690 | 1,263,378 | — | plan? |
| Sep 13, 2017 FMForm 4 → | Sep 15, 4:30 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 590,005 | $13.55 | $7,992,054 | 1,076,833 | — | plan? |
| May 23, 2017 MForm 4 → | May 25, 4:15 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 647,343 | $11.51 | $7,448,329 | 1,058,705 | — | plan? |
| Mar 26, 2017 FForm 4 → | Mar 28, 8:03 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 65,254 | $14.05 | $916,638 | 793,810 | — | plan? |
| Mar 16, 2017 AFForm 4 → | Mar 20, 8:50 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 257,028 | $13.75 | $454,561 | 809,785 | — | plan? |
| Sep 20, 2016 SForm 4 → | Sep 22, 4:39 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 444,199 | $21.03 | $9,342,804 | 752,321 | −37.1% | plan? |
| Sep 20, 2016 MForm 4 → | Sep 22, 4:39 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 444,199 | $16.75 | $7,441,666 | 934,089 | — | plan? |
| Mar 26, 2016 FForm 4 → | Mar 29, 7:20 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 56,912 | $11.96 | $680,668 | 752,321 | — | plan? |
| Mar 17, 2016 AForm 4 → | Mar 21, 8:03 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 263,901 | — | — | 767,666 | — | plan? |
| Dec 9, 2015 SForm 4 → | Dec 11, 6:12 pm EST | Amphastar Pharmaceuticals, Inc.AMPH | 63,300 | $14.25 | $901,753 | 7,461,594 | −0.84% | plan? |
| Dec 4, 2015 SForm 4 → | Dec 8, 7:14 pm EST | Amphastar Pharmaceuticals, Inc.AMPH | 68,117 | $14.71 | $1,001,909 | 7,524,894 | −0.90% | plan? |
| Dec 1, 2015 SForm 4 → | Dec 3, 7:12 pm EST | Amphastar Pharmaceuticals, Inc.AMPH | 38,583 | $15.45 | $596,241 | 7,593,011 | −0.51% | plan? |
| Aug 17, 2015 MForm 4 → | Aug 19, 8:18 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 16,962 | $12.97 | $219,997 | 670,147 | — | plan? |
| Jun 15, 2015 SForm 4 → | Jun 17, 6:01 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 45,382 | $16.29 | $739,445 | 916,315 | −4.72% | plan? |
| Jun 15, 2015 FMForm 4 → | Jun 17, 6:01 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 54,740 | $13.25 | $725,530 | 911,636 | — | plan? |
| Jun 10, 2015 SForm 4/A → | Feb 3, 2016, 7:41 pm EST | Amphastar Pharmaceuticals, Inc.AMPH | 160,495 | $16.23 | $2,605,207 | 679,750 | −19.1% | plan? |
| Jun 10, 2015 MForm 4/A → | Feb 3, 2016, 7:41 pm EST | Amphastar Pharmaceuticals, Inc.AMPH | 176,860 | $12.97 | $2,293,874 | 718,221 | — | plan? |
| Jun 10, 2015 SForm 4 → | Jun 12, 9:30 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 160,495 | $16.23 | $2,605,207 | 665,418 | −19.4% | plan? |
| Jun 5, 2015 FMForm 4 → | Jun 12, 9:30 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 215,584 | $13.58 | $2,927,407 | 661,666 | — | plan? late |
| Jun 5, 2015 SForm 4 → | Jun 9, 8:34 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 193,758 | $16.43 | $3,183,419 | 673,524 | −22.3% | plan? |
| Mar 27, 2015 FMForm 4 → | Jun 9, 8:34 pm EDT | Amphastar Pharmaceuticals, Inc.AMPH | 245,635 | $13.27 | $3,258,500 | 699,324 | — | plan? late |
| Mar 26, 2015 AForm 4 → | Mar 30, 6:00 am EDT | Amphastar Pharmaceuticals, Inc.AMPH | 178,929 | — | — | 670,307 | — | plan? |