Zhang Jack Y.

Average Profitability
24.35%
Insider Buys Quantity
2
Insider Buys Sum
$1.29M
Insider Sells Quantity
35
Insider Sells Sum
$61.46M

Insider Activity of Zhang Jack Y.

The largest purchase of all time was on 2018-05-15 and amounted to 50000 shares of Amphastar Pharmaceuticals, Inc. for $803,940.

The largest sale of all time was on 2016-09-20 and amounted to 778236 shares of Amphastar Pharmaceuticals, Inc. for $16.4M.

Biography of Zhang Jack Y.

No biography is available at this moment.

2021-02-18SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
407
0.0009%
$18.58$7,562+6.76%
2021-02-17SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
13,801
0.029%
$18.67$257,723+4.65%
2021-02-16SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
16,259
0.0344%
$18.51$301,031+6.25%
2021-02-12SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
13,277
0.028%
$18.94$251,522+3.44%
2021-02-11SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
19,823
0.0415%
$19.06$377,884+2.04%
2021-02-10SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
15,747
0.033%
$18.76$295,344+3.66%
2021-02-09SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
11,927
0.0251%
$18.93$225,776+2.91%
2021-02-08SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
13,452
0.0283%
$18.89$254,049+3.18%
2021-02-05SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
15,507
0.0324%
$18.94$293,721+1.94%
2021-02-04SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
25,570
0.0535%
$18.89$483,020+2.32%
2021-02-03SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
32,598
0.0684%
$18.36$598,646+5.48%
2021-02-02SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
27,634
0.0584%
$18.66$515,642+4.36%
2021-02-01SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
48,228
0.1006%
$18.29$882,240+4.98%
2019-09-11SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
600,000
1.1939%
$20.82$12.49M-12.23%
2018-12-14SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
87,154
0.1898%
$20.48$1.78M+1.53%
2018-12-13SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
59,378
0.1289%
$20.99$1.25M-1.34%
2018-12-12SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
74,938
0.1627%
$21.21$1.59M-2.25%
2018-12-11SaleAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
133,514
0.2915%
$21.47$2.87M-2.87%
2018-05-16PurchaseAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
30,000
0.0647%
$16.06$481,707+22.75%
2018-05-15PurchaseAmphastar Pharmaceuticals, Inc.
AMPH
CEO & Chief Scientific Officer
50,000
0.1109%
$16.08$803,940+25.95%
Company
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