Insider Shareholders with Direct Ownership of Amphastar Pharmaceuticals, Inc. (AMPH)
This section provides a comprehensive overview of the insiders with direct ownership of Amphastar Pharmaceuticals, Inc. (AMPH). You can find detailed information about the size and nature of each insider's ownership stake, as well as the latest updates on their holdings.
Amphastar Pharmaceuticals, Inc. Insider List
| Insider | Adquired | Disposed | Held | # of Trades | Last Transaction |
|---|---|---|---|---|---|
|
Jack Y. Zhang
CEO & CHIEF SCIENTIFIC OFFICER |
1,878,565 | 1,220,529 | 2,847,659 $63.9 Million | 32 |
Jun 13, 2025
Added 6.56%
|
|
Mary Z. Luo
COO,Chief Scientist & Chairman |
0 | 351,186 | 1,104,416 $24.8 Million | 3 |
Jan 10, 2024
Reduced 0.16%
|
|
Richard Koo
Director |
31,846 | 25,827 | 259,289 $5.82 Million | 3 |
Jun 07, 2021
Added 2.27%
|
| 83,893 | 64,831 | 151,976 $3.41 Million | 20 |
Jun 03, 2025
Reduced 0.6%
|
|
|
Rong Zhou
SENIOR EVP, PRODUCTION CENTER |
241,735 | 187,218 | 137,497 $3.09 Million | 63 |
Mar 17, 2025
Reduced 1.41%
|
|
William J Peters
CFO, EVP & TREASURER |
598,025 | 573,147 | 124,985 $2.8 Million | 80 |
May 19, 2025
Reduced 0.22%
|
|
Yakob Liawatidewi
EVP CORP ADMIN CENTER |
204,212 | 163,216 | 90,909 $2.04 Million | 51 |
Mar 17, 2025
Reduced 1.87%
|
| 67,214 | 65,176 | 77,531 $1.74 Million | 48 |
Jul 02, 2025
Reduced 0.64%
|
|
| 106,815 | 110,792 | 35,183 $789,506 | 31 |
Jun 02, 2025
Added 12.71%
|
|
| 67,214 | 78,877 | 29,524 $662,518 | 14 |
Jun 02, 2025
Added 14.78%
|
|
| 28,086 | 10,000 | 23,756 $533,084 | 13 |
Jun 02, 2025
Added 17.74%
|
|
|
David Maris
Director |
6,019 | 0 | 19,170 $430,174 | 1 |
Jun 07, 2021
Added 23.9%
|
| 21,096 | 10,182 | 10,914 $244,910 | 8 |
Jun 02, 2025
Added 31.94%
|