Zhang Jack Y.

Number of records: 50
SEC FilingCompany/StockTrade DateTransactionSharesAvg. PriceTotal% HoldingsGain/Loss
16-Sep-24 7:09 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 13-Sep-24Option Exercise 100,000$14.69$1,469,000.00< 1%
10.59M to 10.69M
11-Jun-24 6:35 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 10-Jun-24Option Exercise 100,000$14.69$1,469,000.00< 1%
10.49M to 10.59M
19-Mar-24 6:55 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 17-Mar-24Payment of Exercise 15,768$43.05$678,812.00(< 1%)
10.51M to 10.5M
19-Mar-24 6:55 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 17-Mar-24Payment of Exercise 7,052$43.05$303,589.00(< 1%)
10.5M to 10.49M
19-Mar-24 6:55 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 15-Mar-24Payment of Exercise 408,721$43.05$17,595,400.00(4%)
11.13M to 10.72M
19-Mar-24 6:55 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 15-Mar-24Payment of Exercise 202,658$43.05$8,724,430.00(2%)
10.72M to 10.51M
19-Mar-24 6:55 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 15-Mar-24Option Exercise 722,046$12.46$8,996,690.007%
10.09M to 10.81M
19-Mar-24 6:55 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 15-Mar-24Option Exercise 310,930$12.46$3,874,190.003%
10.81M to 11.13M
08-Mar-24 4:32 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 06-Mar-24Payment of Exercise 7,031$46.31$325,606.00(< 1%)
10.1M to 10.1M
08-Mar-24 4:32 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 06-Mar-24Payment of Exercise 2,990$46.31$138,467.00(< 1%)
10.1M to 10.09M
06-Mar-24 10:00 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 04-Mar-24Grant 64,310----< 1%
10.01M to 10.08M
06-Mar-24 10:00 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 04-Mar-24Grant 27,110----< 1%
10.08M to 10.1M
20-Mar-23 8:02 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 17-Mar-23Payment of Exercise 15,768$36.29$572,221.00(< 1%)
10.39M to 10.37M
20-Mar-23 8:02 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 17-Mar-23Payment of Exercise 7,052$36.29$255,917.00(< 1%)
10.37M to 10.37M
20-Mar-23 8:02 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 16-Mar-23Payment of Exercise 25,241$37.60$949,062.00(< 1%)
10.54M to 10.51M
20-Mar-23 8:02 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 16-Mar-23Payment of Exercise 9,998$37.60$375,925.00(< 1%)
10.51M to 10.5M
20-Mar-23 8:02 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 16-Mar-23Gift 114,730----(1%)
10.5M to 10.39M
17-Mar-23 7:01 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 15-Mar-23Payment of Exercise 8,434$36.84$310,709.00(< 1%)
10.55M to 10.54M
17-Mar-23 7:01 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 15-Mar-23Payment of Exercise 2,803$36.84$103,263.00(< 1%)
10.54M to 10.54M
08-Mar-23 4:05 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 06-Mar-23Grant 81,383----< 1%
10.44M to 10.52M
08-Mar-23 4:05 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 06-Mar-23Grant 34,301----< 1%
10.52M to 10.55M
23-May-22 4:05 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 20-May-22Private Sale (Planned) 10,650$34.21$364,365.00(< 1%)
10.45M to 10.44M
20-May-22 4:38 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 19-May-22Sale (Planned) 41,730$33.76$1,408,760.00(< 1%)
10.49M to 10.45M
20-May-22 4:38 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 18-May-22Private Sale (Planned) 67,046$34.14$2,289,100.00(< 1%)
10.55M to 10.49M
18-May-22 4:06 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 17-May-22Sale (Planned) 50,376$35.76$1,801,440.00(< 1%)
10.61M to 10.55M
18-May-22 4:06 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 16-May-22Private Sale (Planned) 68,069$35.75$2,433,460.00(< 1%)
10.67M to 10.61M
18-Mar-22 6:54 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 17-Mar-22Payment of Exercise 15,768$34.18$538,950.00(< 1%)
10.7M to 10.68M
18-Mar-22 6:54 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 17-Mar-22Payment of Exercise 7,052$34.18$241,037.00(< 1%)
10.68M to 10.67M
18-Mar-22 6:54 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 16-Mar-22Payment of Exercise 25,241$34.22$863,747.00(< 1%)
10.73M to 10.71M
18-Mar-22 6:54 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 16-Mar-22Payment of Exercise 10,426$34.22$356,778.00(< 1%)
10.71M to 10.7M
17-Mar-22 5:05 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 15-Mar-22Grant 76,914----< 1%
10.64M to 10.72M
17-Mar-22 5:05 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 15-Mar-22Grant 32,412----< 1%
10.72M to 10.75M
17-Mar-22 5:05 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 15-Mar-22Payment of Exercise 14,759$34.74$512,728.00(< 1%)
10.75M to 10.74M
17-Mar-22 5:05 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 15-Mar-22Payment of Exercise 4,786$34.74$166,266.00(< 1%)
10.74M to 10.73M
18-Mar-21 9:11 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 17-Mar-21Grant 127,209----1%
10.46M to 10.59M
18-Mar-21 9:11 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 17-Mar-21Grant 56,892----< 1%
10.59M to 10.64M
18-Mar-21 9:11 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 16-Mar-21Payment of Exercise 25,241$18.44$465,444.00(< 1%)
10.49M to 10.47M
2%
18-Mar-21 9:11 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 16-Mar-21Payment of Exercise 8,890$18.44$163,932.00(< 1%)
10.47M to 10.46M
2%
17-Mar-21 7:38 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 15-Mar-21Payment of Exercise 28,088$19.15$537,885.00(< 1%)
10.53M to 10.5M
4%
17-Mar-21 7:38 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 15-Mar-21Payment of Exercise 9,592$19.15$183,687.00(< 1%)
10.5M to 10.49M
4%
18-Feb-21 6:58 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 18-Feb-21Market Sale (Planned) 407$18.58$7,562.34(< 1%)
10.53M to 10.53M
(< 1%)
18-Feb-21 6:58 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 17-Feb-21Market Sale (Planned) 13,801$18.67$257,723.00(< 1%)
10.54M to 10.53M
(< 1%)
18-Feb-21 6:58 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 16-Feb-21Market Sale (Planned) 16,259$18.51$301,030.00(< 1%)
10.56M to 10.54M
(1%)
12-Feb-21 7:11 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 12-Feb-21Market Sale (Planned) 13,277$18.94$251,522.00(< 1%)
10.57M to 10.56M
(1%)
12-Feb-21 7:11 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 11-Feb-21Market Sale (Planned) 19,823$19.06$377,884.00(< 1%)
10.59M to 10.57M
(< 1%)
12-Feb-21 7:11 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 10-Feb-21Market Sale (Planned) 15,747$18.76$295,344.00(< 1%)
10.61M to 10.59M
(2%)
09-Feb-21 5:30 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 09-Feb-21Market Sale (Planned) 11,927$18.93$225,776.00(< 1%)
10.62M to 10.61M
< 1%
09-Feb-21 5:30 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 08-Feb-21Market Sale (Planned) 13,452$18.89$254,049.00(< 1%)
10.63M to 10.62M
< 1%
09-Feb-21 5:30 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 05-Feb-21Market Sale (Planned) 15,507$18.94$293,721.00(< 1%)
10.65M to 10.63M
< 1%
05-Feb-21 8:35 PM
View: 
Amphastar Pharmaceuticals, ... (AMPH) 04-Feb-21Market Sale (Planned) 25,570$18.89$483,020.00(< 1%)
10.68M to 10.65M
(< 1%)