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
2023-08-18
Sale		 2023-08-21
4:05 pm		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 2,000 $52.5 $105,006 40,895
(Direct)		 View
2023-08-15
Sale		 2023-08-16
8:23 pm		 Amphastar Pharmaceuticals Inc. AMPH ZASLOFF MICHAEL A
Director		 12,759 $57.22 $730,025 33,826
(Direct)		 View
2023-08-15
Sale		 2023-08-16
8:22 pm		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 4,163 $57.39 $238,911 42,895
(Direct)		 View
2023-06-15
Sale		 2023-06-20
4:05 pm		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 5,000 $51.79 $258,947 229,081
(Indirect
Direct)		 View
2023-06-15
Sale		 2023-06-20
4:01 pm		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 36,868 $50.85 $1,874,790 120,656
(Direct)		 View
2023-06-13
Sale		 2023-06-14
5:36 pm		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 5,000 $48.24 $241,200 210,872
(Indirect
Direct)		 View
2023-06-02
Sale		 2023-06-05
5:06 pm		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 11,000 $46.35 $509,859 113,093
(Direct)		 View
2023-06-01
Sale		 2023-06-05
4:18 pm		 Amphastar Pharmaceuticals Inc. AMPH Lee Howard
Director		 16,679 $45.02 $750,960 142,939
(Direct)		 View
2023-05-18
Sale		 2023-05-22
6:49 pm		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 10,500 $44.35 $465,675 123,260
(Direct)		 View
2023-05-18
Sale		 2023-05-19
6:36 pm		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 10,000 $44.2 $442,050 215,157
(Indirect
Direct)		 View
2023-05-18
Sale		 2023-05-19
6:30 pm		 Amphastar Pharmaceuticals Inc. AMPH Deflin Gayle
Director		 4,519 $44.01 $198,888 4,163
(Direct)		 View
2023-05-17
Sale		 2023-05-18
4:52 pm		 Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director		 5,000 $43.13 $215,655 80,117
(Direct)		 View
2023-05-15
Sale		 2023-05-17
4:05 pm		 Amphastar Pharmaceuticals Inc. AMPH Deflin Gayle
Director		 1,500 $43.15 $64,728 8,682
(Direct)		 View
2023-05-15
Sale		 2023-05-16
8:01 pm		 Amphastar Pharmaceuticals Inc. AMPH ZASLOFF MICHAEL A
Director		 7,500 $42.18 $316,335 43,869
(Direct)		 View
2023-05-12
Sale		 2023-05-16
7:59 pm		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 10,000 $42.78 $427,825 51,033
(Direct)		 View
2023-04-17
Sale		 2023-04-18
8:07 pm		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 5,632 $42.35 $238,515 134,138
(Direct)		 View
2023-04-13
Sale		 2023-04-14
5:50 pm		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center		 11,494 $41.56 $477,748 77,171
(Indirect
Direct)		 View
2023-04-13
Sale		 2023-04-14
5:48 pm		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 4,868 $42.35 $206,160 139,770
(Direct)		 View
2023-04-10
Sale		 2023-04-12
5:22 pm		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center		 5,000 $40 $200,000 88,665
(Indirect
Direct)		 View
2023-04-10
Sale		 2023-04-12
5:21 pm		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 10,032 $40.35 $404,791 144,638
(Direct)		 View
2023-04-03
Sale		 2023-04-04
7:12 pm		 Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director		 491 $37.72 $18,519 85,117
(Direct)		 View
2023-03-15
Sale		 2023-03-17
7:03 pm		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 12,776 $36.43 $465,472 114,305
(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
2023-06-20
Exercise		 2023-06-21
5:05 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 9,651 $11.33 241,796
(Direct)		 View
2023-06-20
Exercise		 2023-06-21
5:05 pm		 N/A
2026-03-17		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 9,651 $0 241,796
(Direct)		 View
2023-06-15
Exercise		 2023-06-20
4:05 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 1,171 $16.19 229,081
(Direct)		 View
2023-06-15
Exercise		 2023-06-20
4:05 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 13,575 $14.4 229,081
(Direct)		 View
2023-06-15
Exercise		 2023-06-20
4:05 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 4,631 $14.95 229,081
(Direct)		 View
2023-06-15
Exercise		 2023-06-20
4:05 pm		 N/A
2024-04-14		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 19,377 $0 229,081
(Direct)		 View
2023-06-15
Exercise		 2023-06-20
4:01 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 36,868 $19.79 120,656
(Direct)		 View
2023-06-15
Exercise		 2023-06-20
4:01 pm		 N/A
2028-03-15		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 36,868 $0 120,656
(Direct)		 View
2023-06-13
Exercise		 2023-06-14
5:36 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 5,000 $14.4 210,872
(Direct)		 View
2023-06-13
Exercise		 2023-06-14
5:36 pm		 N/A
2024-04-14		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 5,000 $0 210,872
(Direct)		 View
2023-06-10
Tax Withholding		 2023-06-12
4:05 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Lee Howard
Director		 375 $45.67 145,280
(Direct)		 View
2023-06-05
Option Award		 2023-06-07
8:13 pm		 N/A
2031-06-05		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 9,732 $0 54,074
(Direct)		 View
2023-06-05
Option Award		 2023-06-07
8:12 pm		 N/A
2031-06-05		 Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director		 9,732 $0 89,849
(Direct)		 View
2023-06-05
Option Award		 2023-06-07
6:24 pm		 N/A
2031-06-05		 Amphastar Pharmaceuticals Inc. AMPH Gerst Diane G.
Director		 9,732 $0 22,574
(Direct)		 View
2023-06-05
Option Award		 2023-06-07
5:20 pm		 N/A
2031-06-05		 Amphastar Pharmaceuticals Inc. AMPH ZASLOFF MICHAEL A
Director		 9,732 $0 53,601
(Direct)		 View
2023-06-05
Option Award		 2023-06-07
5:19 pm		 N/A
2031-06-05		 Amphastar Pharmaceuticals Inc. AMPH Lee Howard
Director		 9,732 $0 152,671
(Direct)		 View
2023-06-05
Option Award		 2023-06-07
5:18 pm		 N/A
2031-06-05		 Amphastar Pharmaceuticals Inc. AMPH Deflin Gayle
Director		 9,732 $0 13,895
(Direct)		 View
2023-06-04
Tax Withholding		 2023-06-06
6:49 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center		 378 $46.7 72,128
(Direct)		 View
2023-06-02
Exercise		 2023-06-05
5:06 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 11,000 $13.35 113,093
(Direct)		 View
2023-06-02
Exercise		 2023-06-05
5:06 pm		 N/A
2027-03-16		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 11,000 $0 113,093
(Direct)		 View
2023-06-01
Exercise		 2023-06-05
4:18 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Lee Howard
Director		 16,679 $16.69 142,939
(Direct)		 View
2023-06-01
Exercise		 2023-06-05
4:18 pm		 N/A
2026-06-07		 Amphastar Pharmaceuticals Inc. AMPH Lee Howard
Director		 16,679 $0 142,939
(Direct)		 View
2023-05-19
Tax Withholding		 2023-05-22
6:49 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 378 $44.16 123,260
(Direct)		 View
2023-05-18
Exercise		 2023-05-22
6:49 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 10,500 $13.35 123,260
(Direct)		 View
2023-05-18
Exercise		 2023-05-22
6:49 pm		 N/A
2027-03-16		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 10,500 $0 123,260
(Direct)		 View
2023-05-18
Exercise		 2023-05-19
6:36 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 10,000 $14.4 215,157
(Direct)		 View
2023-05-18
Exercise		 2023-05-19
6:36 pm		 N/A
2024-04-14		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 10,000 $0 215,157
(Direct)		 View
2023-05-12
Gift		 2023-05-16
7:59 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 3,000 $0 51,033
(Direct)		 View
2023-05-12
Exercise		 2023-05-16
7:59 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 10,000 $16.69 51,033
(Direct)		 View
2023-05-12
Exercise		 2023-05-16
7:59 pm		 N/A
2026-06-07		 Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director		 10,000 $0 51,033
(Direct)		 View
2023-04-17
Exercise		 2023-04-18
8:07 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 5,632 $13.35 134,138
(Direct)		 View
2023-04-17
Exercise		 2023-04-18
8:07 pm		 N/A
2027-03-16		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 5,632 $0 134,138
(Direct)		 View
2023-04-13
Exercise		 2023-04-14
5:50 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center		 11,494 $20.23 77,171
(Direct)		 View
2023-04-13
Exercise		 2023-04-14
5:50 pm		 N/A
2029-03-15		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center		 11,494 $0 77,171
(Direct)		 View
2023-04-13
Exercise		 2023-04-14
5:48 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 4,868 $13.35 139,770
(Direct)		 View
2023-04-13
Exercise		 2023-04-14
5:48 pm		 N/A
2027-03-16		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 4,868 $0 139,770
(Direct)		 View
2023-04-10
Exercise		 2023-04-12
5:22 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center		 5,000 $20.23 88,665
(Direct)		 View
2023-04-10
Exercise		 2023-04-12
5:22 pm		 N/A
2029-03-15		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center		 5,000 $0 88,665
(Direct)		 View
2023-04-10
Exercise		 2023-04-12
5:21 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 10,032 $13.35 144,638
(Direct)		 View
2023-04-10
Exercise		 2023-04-12
5:21 pm		 N/A
2027-03-16		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 10,032 $0 144,638
(Direct)		 View
2023-03-16
Tax Withholding		 2023-03-20
8:05 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center		 1,620 $37.6 71,674
(Direct)		 View
2023-03-17
Tax Withholding		 2023-03-20
8:05 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center		 1,673 $36.29 71,674
(Direct)		 View
2023-03-16
Tax Withholding		 2023-03-20
8:04 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 2,283 $37.6 192,266
(Direct)		 View
2023-03-17
Tax Withholding		 2023-03-20
8:04 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 1,901 $36.29 192,266
(Direct)		 View
2023-03-16
Tax Withholding		 2023-03-20
8:03 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 4,995 $37.6 105,148
(Direct)		 View
2023-03-17
Tax Withholding		 2023-03-20
8:03 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 4,162 $36.29 105,148
(Direct)		 View
2023-03-16
Gift		 2023-03-20
8:02 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & Chief Scientific Officer
10% Owner		 57,365 $0 10,366,999
(Indirect)		 View
2023-03-16
Tax Withholding		 2023-03-20
8:02 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & Chief Scientific Officer
10% Owner		 35,239 $37.6 10,366,999
(Direct)		 View
2023-03-17
Tax Withholding		 2023-03-20
8:02 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & Chief Scientific Officer
10% Owner		 22,820 $36.29 10,366,999
(Direct)		 View
2023-03-15
Tax Withholding		 2023-03-17
7:07 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center		 1,851 $36.84 74,967
(Direct)		 View
2023-03-15
Tax Withholding		 2023-03-17
7:04 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center		 2,057 $36.84 196,450
(Direct)		 View
2023-03-15
Tax Withholding		 2023-03-17
7:03 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 4,146 $36.84 114,305
(Direct)		 View
2023-03-15
Exercise		 2023-03-17
7:03 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 6,688 $14.95 114,305
(Direct)		 View
2023-03-15
Exercise		 2023-03-17
7:03 pm		 N/A
2025-03-26		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 6,688 $0 114,305
(Direct)		 View
2023-03-15
Tax Withholding		 2023-03-17
7:01 pm		 N/A
N/A		 Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & Chief Scientific Officer
10% Owner		 11,237 $36.84 10,539,788
(Direct)		 View
2023-03-06
Option Award		 2023-03-08
4:38 pm		 N/A
2033-03-06		 Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer		 74,341 $0 174,955
(Direct)		 View
2023-03-06
Option Award		 2023-03-08
4:07 pm		 N/A
2033-03-06		 Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center		 39,625 $0 103,691
(Direct)		 View
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