Insider Holders & Insider Ownership - Amphastar Pharmaceuticals Inc. (AMPH)

List of insiders holdings for Amphastar Pharmaceuticals Inc.:
  1. Shares directly owned by the insider.
  2. Shares indirectly owned by the insider.
  3. Total shares owned by the insider (sum of shares directly and indirectly owned).
  4. Total market value if available.
  5. Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
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# Insider Holder Name Report
Date Time		 Shares Owned
Directly
Indirectly		 Total
Shares Owned		 Filing
1 Zhang Jack Y.
Luo Mary Z.
Applied Physics & Chemistry Laboratories Inc.
CEO & Chief Scientific Officer
10% Owner		 2025-02-07 19:21:18 12,524,153
0		 12,524,153 Form 13G
2 Zhang Jack Y.
Luo Mary Z.
CEO & CHIEF SCIENTIFIC OFFICER
10% Owner		 2025-03-18 19:13:17 2,647,659
8,013,154		 10,660,813 Form 4
3 Shandell Jason B.
President and General Counsel		 2020-03-18 17:31:08 330,234
0		 330,234 Form 4
4 Koo Richard
Director		 2021-06-08 20:55:10 276,471
10,000		 286,471 Form 4
5 Zhou Rong
SENIOR EVP, PRODUCTION CENTER		 2025-03-18 19:43:26 137,497
104,668		 242,165 Form 4
6 Lee Howard
Director		 2024-06-05 20:10:16 154,641
0		 154,641 Form 4
7 PETERS WILLIAM J
CFO, EVP & TREASURER		 2025-03-18 18:38:18 125,258
0		 125,258 Form 4
8 Liawatidewi Yakob
EVP CORP ADMIN CENTER		 2025-03-18 18:41:24 90,909
2,459		 93,368 Form 4
9 Petersen Floyd F.
Director		 2025-04-02 18:45:10 73,909
0		 73,909 Form 4
10 Purchase Marilyn J.
Former Officer		 2015-06-17 18:14:31 43,263
16,044		 59,307 Form 4
11 Maris David
Director		 2021-06-08 20:57:23 36,352
0		 36,352 Form 4
12 ZASLOFF MICHAEL A
Director		 2024-06-05 17:56:54 31,266
0		 31,266 Form 4
13 Shohet Stephen B.
Director		 2018-12-12 20:37:04 30,706
0		 30,706 Form 4
14 PRINS RICHARD K
Director		 2024-12-11 20:28:14 30,061
0		 30,061 Form 4
15 Gerst Diane G.
Director		 2024-06-05 19:03:10 25,498
0		 25,498 Form 4
16 Deflin Gayle
Director		 2024-06-05 18:56:31 12,656
0		 12,656 Form 4