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

Real time insider trading transaction history:

  • Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
  • 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
What is insider trading>>
Time period
Insider Trading Transactions for Amphastar Pharmaceuticals Inc.
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Common stock purchase or sale:
Transaction
Date		 Reported
DateTime		 Company Symbol Insider
Relationship		 Shares
Traded		 Average
Price		 Total
Amount		 Shares
Owned		 Filing
2024-08-26
Sale		 2024-08-27
9:33 pm		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
SENIOR EVP, PRODUCTION CENTER		 4,000 $48.35 $193,400 232,949
(Indirect
Direct)		 View
2024-08-12
Sale		 2024-08-13
5:58 pm		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 17,101 $43.07 $736,550 63,971
(Direct)		 View
2024-07-31
Sale		 2024-08-02
4:32 pm		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & TREASURER		 10,282 $44.23 $454,773 99,046
(Direct)		 View
2024-06-27
Sale		 2024-06-28
4:26 pm		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & TREASURER		 3,596 $40.93 $147,169 94,103
(Direct)		 View
2024-06-10
Sale		 2024-06-11
6:32 pm		 Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director		 3,000 $41.4 $124,200 78,409
(Direct)		 View
2024-06-03
Sale		 2024-06-05
6:54 pm		 Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director		 500 $42.65 $21,326 88,273
(Direct)		 View
2024-05-01
Sale		 2024-05-02
4:56 pm		 Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director		 500 $41.67 $20,837 78,833
(Direct)		 View
2024-04-01
Sale		 2024-04-02
9:31 pm		 Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director		 500 $43.43 $21,714 79,333
(Direct)		 View
2024-03-06
Sale		 2024-03-08
4:52 pm		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & TREASURER		 18,136 $46.48 $842,883 109,300
(Direct)		 View
2024-03-05
Sale		 2024-03-06
5:57 pm		 Amphastar Pharmaceuticals Inc. AMPH ZASLOFF MICHAEL A
Director		 12,500 $47.18 $589,724 21,326
(Direct)		 View
2024-03-01
Sale		 2024-03-04
8:35 pm		 Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director		 500 $45.69 $22,847 79,833
(Direct)		 View
2024-02-01
Sale		 2024-02-02
7:37 pm		 Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director		 500 $53.1 $26,548 80,333
(Direct)		 View
2024-01-10
Sale		 2024-01-11
4:37 pm		 Amphastar Pharmaceuticals Inc. AMPH Luo Mary Z.
Zhang Jack Y.
COO,Chief Scientist & Chairman
10% Owner		 131,386 $54.59 $7,171,768 10,015,813
(Indirect
Direct)		 View
2024-01-08
Sale		 2024-01-10
6:27 pm		 Amphastar Pharmaceuticals Inc. AMPH Luo Mary Z.
Zhang Jack Y.
COO,Chief Scientist & Chairman
10% Owner		 219,800 $58.23 $12,798,708 10,147,199
(Indirect
Direct)		 View
2024-01-02
Sale		 2024-01-03
7:25 pm		 Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director		 500 $61.37 $30,683 80,833
(Direct)		 View
2023-12-01
Sale		 2023-12-05
6:25 pm		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
Senior EVP, Production Center		 7,830 $59.03 $462,195 217,088
(Indirect
Direct)		 View
2023-12-01
Sale		 2023-12-04
8:49 pm		 Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director		 500 $57.9 $28,952 81,333
(Direct)		 View
2023-11-17
Sale		 2023-11-20
5:23 pm		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 4,000 $55.86 $223,446 30,895
(Direct)		 View
2023-11-14
Sale		 2023-11-16
4:05 pm		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 59,250 $55.67 $3,298,475 147,685
(Direct)		 View
2023-11-13
Sale		 2023-11-15
4:31 pm		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 5,000 $52.5 $262,500 35,895
(Direct)		 View
2023-11-14
Sale		 2023-11-15
4:30 pm		 Amphastar Pharmaceuticals Inc. AMPH Deflin Gayle
Director		 4,163 $55.45 $230,838 2,716
(Direct)		 View

Stock options: Exercise, Award, Grant, Conversion
Transaction
Date		 Reported
DateTime		 Exercisable
Expiration		 Company Symnbol Insider
Relationship		 Shares
Traded		 Conversion
Price		 Shares
Owned		 Filing
2024-08-26
Exercise		 2024-08-27
9:33 pm		 N/A
2025-03-26		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
SENIOR EVP, PRODUCTION CENTER		 4,000 $0 232,949
(Direct)		 View
2024-08-26
Exercise		 2024-08-27
9:33 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
SENIOR EVP, PRODUCTION CENTER		 4,000 $14.95 232,949
(Direct)		 View
2024-08-12
Exercise		 2024-08-13
5:58 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 3,915 $20.03 63,971
(Direct)		 View
2024-08-12
Exercise		 2024-08-13
5:58 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 7,182 $19.52 63,971
(Direct)		 View
2024-08-12
Exercise		 2024-08-13
5:58 pm		 N/A
2027-06-12		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 17,101 $0 63,971
(Direct)		 View
2024-08-12
Exercise		 2024-08-13
5:58 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 6,004 $20.08 63,971
(Direct)		 View
2024-07-31
Exercise		 2024-08-02
4:32 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & TREASURER		 10,282 $20.23 99,046
(Direct)		 View
2024-07-31
Exercise		 2024-08-02
4:32 pm		 N/A
2029-03-15		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & TREASURER		 10,282 $0 99,046
(Direct)		 View
2024-06-10
Exercise		 2024-06-11
6:35 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & CHIEF SCIENTIFIC OFFICER
10% Owner		 100,000 $14.69 10,981,466
(Direct)		 View
2024-06-10
Exercise		 2024-06-11
6:35 pm		 N/A
2025-03-16		 Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & CHIEF SCIENTIFIC OFFICER
10% Owner		 100,000 $0 10,981,466
(Direct)		 View
2024-06-05
Tax Withholding		 2024-06-05
8:10 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Lee Howard
Director		 579 $42.04 154,641
(Direct)		 View
2024-06-03
Option Award		 2024-06-05
8:10 pm		 N/A
2034-06-03		 Amphastar Pharmaceuticals Inc. AMPH Lee Howard
Director		 9,940 $0 154,641
(Direct)		 View
2024-06-03
Option Award		 2024-06-05
7:03 pm		 N/A
2034-06-03		 Amphastar Pharmaceuticals Inc. AMPH Gerst Diane G.
Director		 9,940 $0 25,498
(Direct)		 View
2024-06-03
Option Award		 2024-06-05
6:56 pm		 N/A
2034-06-03		 Amphastar Pharmaceuticals Inc. AMPH Deflin Gayle
Director		 9,940 $0 12,656
(Direct)		 View
2024-06-03
Option Award		 2024-06-05
6:54 pm		 N/A
2034-06-03		 Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director		 9,940 $0 88,273
(Direct)		 View
2024-06-04
Tax Withholding		 2024-06-05
6:00 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP CORP ADMIN CENTER		 272 $42.22 77,397
(Direct)		 View
2024-06-03
Option Award		 2024-06-05
5:58 pm		 N/A
2034-06-03		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 9,940 $0 40,835
(Direct)		 View
2024-06-03
Option Award		 2024-06-05
5:56 pm		 N/A
2034-06-03		 Amphastar Pharmaceuticals Inc. AMPH ZASLOFF MICHAEL A
Director		 9,940 $0 31,266
(Direct)		 View
2024-05-19
Tax Withholding		 2024-05-21
6:26 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & TREASURER		 387 $43.48 97,268
(Direct)		 View
2024-03-15
Tax Withholding		 2024-03-19
6:55 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & Chief Scientific Officer
10% Owner		 634,199 $43.05 10,490,989
(Direct)		 View
2024-03-15
Exercise		 2024-03-19
6:55 pm		 N/A
2024-03-17		 Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & Chief Scientific Officer
10% Owner		 1,032,976 $0 10,490,989
(Direct)		 View
2024-03-15
Exercise		 2024-03-19
6:55 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & Chief Scientific Officer
10% Owner		 1,032,976 $12.46 10,490,989
(Direct)		 View
2024-03-15
Tax Withholding		 2024-03-19
5:17 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP CORP ADMIN CENTER		 4,424 $43.05 77,237
(Direct)		 View
2024-03-15
Tax Withholding		 2024-03-19
5:15 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
SENIOR EVP, PRODUCTION CENTER		 5,535 $43.05 222,684
(Direct)		 View
2024-03-15
Tax Withholding		 2024-03-19
5:10 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & TREASURER		 11,645 $43.05 97,655
(Direct)		 View
2024-03-06
Exercise		 2024-03-08
4:52 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & TREASURER		 8,826 $11.33 109,300
(Direct)		 View
2024-03-06
Tax Withholding		 2024-03-08
4:52 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & TREASURER		 2,190 $46.31 109,300
(Direct)		 View
2024-03-06
Exercise		 2024-03-08
4:52 pm		 N/A
2026-03-17		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & TREASURER		 8,826 $0 109,300
(Direct)		 View
2024-03-06
Tax Withholding		 2024-03-08
4:49 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP CORP ADMIN CENTER		 1,221 $46.31 81,661
(Direct)		 View
2024-03-06
Tax Withholding		 2024-03-08
4:47 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
SENIOR EVP, PRODUCTION CENTER		 1,390 $46.31 228,219
(Direct)		 View
2024-03-06
Tax Withholding		 2024-03-08
4:32 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & Chief Scientific Officer
10% Owner		 10,021 $46.31 10,092,212
(Direct)		 View
2024-03-04
Option Award		 2024-03-06
6:29 pm		 N/A
2034-03-04		 Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & CHIEF SCIENTIFIC OFFICER
10% Owner		 284,002 $0 10,294,815
(Direct)		 View
2024-03-04
Option Award		 2024-03-06
5:54 pm		 N/A
2034-03-04		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP CORP ADMIN CENTER		 33,409 $0 105,537
(Direct)		 View
2024-03-04
Option Award		 2024-03-06
5:51 pm		 N/A
2034-03-04		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
SENIOR EVP, PRODUCTION CENTER		 38,899 $0 255,987
(Direct)		 View
2024-03-04
Option Award		 2024-03-06
5:49 pm		 N/A
2034-03-04		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & TREASURER		 60,395 $0 161,755
(Direct)		 View
2023-12-04
Exercise		 2023-12-05
6:25 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
Senior EVP, Production Center		 3,514 $16.19 217,088
(Direct)		 View
2023-12-01
Exercise		 2023-12-05
6:25 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
Senior EVP, Production Center		 4,316 $14.4 217,088
(Direct)		 View
2023-12-01
Exercise		 2023-12-05
6:25 pm		 N/A
2024-04-14		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
Senior EVP, Production Center		 7,830 $0 217,088
(Direct)		 View
2023-11-17
Gift		 2023-11-20
5:23 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 1,000 $0 30,895
(Direct)		 View
2023-11-14
Exercise		 2023-11-16
4:05 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 38,000 $13.03 147,685
(Direct)		 View
2023-11-14
Exercise		 2023-11-16
4:05 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 21,250 $20.23 147,685
(Direct)		 View
2023-11-14
Exercise		 2023-11-16
4:05 pm		 N/A
2029-03-15		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 59,250 $0 147,685
(Direct)		 View
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