Zhang Jack Y. has been a registered insider since 2003.
As a Beneficial Owner of 5% or more of a class of the company's shares at Amphastar Pharmaceuticals, Inc., Zhang Jack Y. last made a transaction on 6/13/2025.
InsiderInsights.com Purchase Scorecard
|
|
|
Transaction Date
|
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
Time From
Purchases
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
| 12 |
67% |
4% |
3% |
82 |
1 Year |
12 |
0% |
-- |
-- |
-- |
| 13 |
31% |
-3% |
-3% |
93 |
9 Month |
13 |
0% |
-- |
-- |
-- |
| 14 |
50% |
-0% |
-1% |
72 |
6 Month |
14 |
0% |
-- |
-- |
-- |
| 14 |
50% |
0% |
1% |
37 |
3 Month |
14 |
0% |
-- |
-- |
-- |
| 14 |
71% |
2% |
4% |
33 |
1 Month |
14 |
0% |
-- |
-- |
-- |
| 14 |
64% |
2% |
1% |
15 |
1 Week |
14 |
0% |
-- |
-- |
-- |
InsiderInsights.com Sales Scorecard
|
|
|
Transaction Date
|
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
Time From
Sales
|
Nq |
Hit
Rate
|
Mean
Return
|
Median
Return
|
Range of
Returns
|
| 34 |
38% |
12% |
11% |
81 |
1 Year |
34 |
0% |
-- |
-- |
-- |
| 36 |
61% |
-3% |
-4% |
67 |
9 Month |
36 |
0% |
-- |
-- |
-- |
| 36 |
58% |
-3% |
-8% |
62 |
6 Month |
36 |
0% |
-- |
-- |
-- |
| 36 |
58% |
-3% |
-4% |
50 |
3 Month |
36 |
0% |
-- |
-- |
-- |
| 36 |
44% |
0% |
1% |
35 |
1 Month |
36 |
0% |
-- |
-- |
-- |
| 36 |
36% |
2% |
2% |
21 |
1 Week |
36 |
0% |
-- |
-- |
-- |
| Scorecards Updated 1/19/2026 07:50 PM EST |
Latest Transaction Date: |
6/13/2025 |
| Average days between Transaction and Entered Dates: |
2 |
