Latest Insider Transactions at Amphastar Pharmaceuticals, Inc. (AMPH)
This section provides a real-time view of insider transactions for Amphastar Pharmaceuticals, Inc. (AMPH). The data is sourced from Form 4 filings with the SEC, which are filed by insiders of Amphastar Pharmaceuticals, Inc. to disclose their transactions in the company's securities. By reviewing this information, investors can gain insights into the trading activity of Amphastar Pharmaceuticals, Inc.'s insiders and make more informed investment decisions.
Insider Transaction List
| Date | Insider | Transaction | Ownership Type | Shares Traded | Value / Price |
|---|---|---|---|---|---|
|
Mar 10
2025
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
BUY
Grant, award, or other acquisition
|
Direct |
24,692
+14.93%
|
-
|
|
Mar 10
2025
|
Yakob Liawatidewi EVP CORP ADMIN CENTER |
BUY
Grant, award, or other acquisition
|
Direct |
20,837
+18.2%
|
-
|
|
Mar 10
2025
|
William J Peters CFO, EVP & TREASURER |
BUY
Grant, award, or other acquisition
|
Direct |
36,747
+22.01%
|
-
|
|
Mar 10
2025
|
Jack Y. Zhang CEO & CHIEF SCIENTIFIC OFFICER |
BUY
Grant, award, or other acquisition
|
Indirect |
48,996
+4.09%
|
-
|
|
Mar 10
2025
|
Jack Y. Zhang CEO & CHIEF SCIENTIFIC OFFICER |
BUY
Grant, award, or other acquisition
|
Direct |
116,226
+4.26%
|
-
|
|
Mar 06
2025
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
SELL
Payment of exercise price or tax liability
|
Direct |
1,354
-1.15%
|
$37,912
$28.32 P/Share
|
|
Mar 06
2025
|
William J Peters CFO, EVP & TREASURER |
SELL
Payment of exercise price or tax liability
|
Direct |
2,141
-2.24%
|
$59,948
$28.32 P/Share
|
|
Mar 06
2025
|
Yakob Liawatidewi EVP CORP ADMIN CENTER |
SELL
Payment of exercise price or tax liability
|
Direct |
1,141
-1.54%
|
$31,948
$28.32 P/Share
|
|
Mar 06
2025
|
Jack Y. Zhang CEO & CHIEF SCIENTIFIC OFFICER |
SELL
Payment of exercise price or tax liability
|
Indirect |
3,069
-0.28%
|
$85,932
$28.32 P/Share
|
|
Mar 06
2025
|
Jack Y. Zhang CEO & CHIEF SCIENTIFIC OFFICER |
SELL
Payment of exercise price or tax liability
|
Direct |
9,645
-0.39%
|
$270,060
$28.32 P/Share
|
|
Mar 06
2025
|
Floyd F. Petersen |
SELL
Open market or private sale
|
Direct |
1,000
-1.33%
|
$27,000
$27.99 P/Share
|
|
Mar 04
2025
|
William J Peters CFO, EVP & TREASURER |
SELL
Payment of exercise price or tax liability
|
Direct |
1,739
-1.79%
|
$46,953
$27.62 P/Share
|
|
Mar 04
2025
|
William J Peters CFO, EVP & TREASURER |
SELL
Open market or private sale
|
Direct |
4,231
-4.16%
|
$114,237
$27.54 P/Share
|
|
Mar 04
2025
|
William J Peters CFO, EVP & TREASURER |
BUY
Exercise of conversion of derivative security
|
Direct |
7,490
+6.87%
|
$97,370
$13.35 P/Share
|
|
Mar 04
2025
|
Jack Y. Zhang CEO & CHIEF SCIENTIFIC OFFICER |
SELL
Payment of exercise price or tax liability
|
Indirect |
2,426
-0.22%
|
$65,502
$27.62 P/Share
|
|
Mar 04
2025
|
Jack Y. Zhang CEO & CHIEF SCIENTIFIC OFFICER |
SELL
Payment of exercise price or tax liability
|
Direct |
5,753
-0.23%
|
$155,331
$27.62 P/Share
|
|
Mar 04
2025
|
Yakob Liawatidewi EVP CORP ADMIN CENTER |
SELL
Payment of exercise price or tax liability
|
Direct |
963
-1.29%
|
$26,001
$27.62 P/Share
|
|
Mar 04
2025
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
SELL
Payment of exercise price or tax liability
|
Direct |
1,121
-0.95%
|
$30,267
$27.62 P/Share
|
|
Dec 13
2024
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
SELL
Open market or private sale
|
Direct |
8,000
-6.33%
|
$360,000
$45.23 P/Share
|
|
Dec 13
2024
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
BUY
Exercise of conversion of derivative security
|
Direct |
8,000
+5.95%
|
$88,000
$11.33 P/Share
|
|
Dec 12
2024
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
SELL
Open market or private sale
|
Direct |
7,000
-5.58%
|
$308,000
$44.42 P/Share
|
|
Dec 12
2024
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
BUY
Exercise of conversion of derivative security
|
Direct |
7,000
+5.28%
|
$77,000
$11.33 P/Share
|
|
Dec 09
2024
|
Richard K Prins |
SELL
Bona fide gift
|
Direct |
410
-1.35%
|
-
|
|
Dec 09
2024
|
Richard K Prins |
SELL
Open market or private sale
|
Direct |
10,000
-24.71%
|
$430,000
$43.77 P/Share
|
|
Dec 09
2024
|
Richard K Prins |
BUY
Exercise of conversion of derivative security
|
Direct |
10,000
+19.81%
|
$190,000
$19.52 P/Share
|
|
Nov 12
2024
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
SELL
Open market or private sale
|
Direct |
6,893
-5.5%
|
$330,864
$48.88 P/Share
|
|
Nov 12
2024
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
BUY
Exercise of conversion of derivative security
|
Direct |
6,893
+5.22%
|
$96,502
$14.95 P/Share
|
|
Nov 12
2024
|
Richard K Prins |
SELL
Bona fide gift
|
Direct |
1,000
-3.18%
|
-
|
|
Nov 12
2024
|
Richard K Prins |
SELL
Open market or private sale
|
Direct |
5,000
-13.71%
|
$240,000
$48.8 P/Share
|
|
Nov 12
2024
|
Richard K Prins |
BUY
Exercise of conversion of derivative security
|
Direct |
2,500
+6.42%
|
$40,000
$16.69 P/Share
|
|
Nov 11
2024
|
Jack Y. Zhang CEO & CHIEF SCIENTIFIC OFFICER |
SELL
Bona fide gift
|
Indirect |
125,000
-10.16%
|
-
|
|
Nov 11
2024
|
Jack Y. Zhang CEO & CHIEF SCIENTIFIC OFFICER |
SELL
Bona fide gift
|
Direct |
125,000
-4.75%
|
-
|
|
Nov 06
2024
|
Yakob Liawatidewi EVP CORP ADMIN CENTER |
SELL
Open market or private sale
|
Direct |
5,214
-6.51%
|
$271,128
$52.05 P/Share
|
|
Nov 06
2024
|
Yakob Liawatidewi EVP CORP ADMIN CENTER |
BUY
Exercise of conversion of derivative security
|
Direct |
5,214
+6.11%
|
$67,782
$13.03 P/Share
|
|
Nov 06
2024
|
William J Peters CFO, EVP & TREASURER |
SELL
Open market or private sale
|
Direct |
7,426
-7.31%
|
$386,152
$52.05 P/Share
|
|
Nov 06
2024
|
William J Peters CFO, EVP & TREASURER |
BUY
Exercise of conversion of derivative security
|
Direct |
7,426
+6.82%
|
$96,538
$13.03 P/Share
|
|
Sep 13
2024
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
SELL
Open market or private sale
|
Direct |
3,000
-2.47%
|
$144,000
$48.26 P/Share
|
|
Sep 13
2024
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
BUY
Exercise of conversion of derivative security
|
Direct |
3,000
+2.41%
|
$42,000
$14.95 P/Share
|
|
Sep 13
2024
|
Jack Y. Zhang CEO & CHIEF SCIENTIFIC OFFICER |
BUY
Exercise of conversion of derivative security
|
Direct |
100,000
+3.66%
|
$1,400,000
$14.69 P/Share
|
|
Sep 05
2024
|
Floyd F. Petersen |
SELL
Open market or private sale
|
Direct |
3,000
-3.83%
|
$138,000
$46.47 P/Share
|
|
Aug 26
2024
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
SELL
Open market or private sale
|
Direct |
4,000
-3.27%
|
$192,000
$48.35 P/Share
|
|
Aug 26
2024
|
Rong Zhou SENIOR EVP, PRODUCTION CENTER |
BUY
Exercise of conversion of derivative security
|
Direct |
4,000
+3.16%
|
$56,000
$14.95 P/Share
|
|
Aug 12
2024
|
Richard K Prins |
SELL
Open market or private sale
|
Direct |
17,101
-33.48%
|
$735,343
$43.07 P/Share
|
|
Aug 12
2024
|
Richard K Prins |
BUY
Exercise of conversion of derivative security
|
Direct |
17,101
+11.24%
|
$324,919
$19.88 P/Share
|
|
Jul 31
2024
|
William J Peters CFO, EVP & TREASURER |
SELL
Open market or private sale
|
Direct |
10,282
-9.85%
|
$452,408
$44.23 P/Share
|
|
Jul 31
2024
|
William J Peters CFO, EVP & TREASURER |
BUY
Exercise of conversion of derivative security
|
Direct |
10,282
+8.97%
|
$205,640
$20.23 P/Share
|
|
Jun 27
2024
|
William J Peters CFO, EVP & TREASURER |
SELL
Open market or private sale
|
Direct |
3,596
-1.85%
|
$147,436
$41.07 P/Share
|
|
Jun 10
2024
|
Jack Y. Zhang CEO & CHIEF SCIENTIFIC OFFICER |
BUY
Exercise of conversion of derivative security
|
Direct |
100,000
+3.8%
|
$1,400,000
$14.69 P/Share
|
|
Jun 10
2024
|
Floyd F. Petersen |
SELL
Open market or private sale
|
Direct |
3,000
-3.69%
|
$123,000
$41.4 P/Share
|
|
Jun 05
2024
|
Howard Lee |
SELL
Payment of exercise price or tax liability
|
Direct |
579
-0.39%
|
$24,318
$42.04 P/Share
|