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
2022-03-07
Sale
2022-03-09
4:06 pm
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
13,026 $29.35 $382,313 165,564
(Direct)
View
2022-03-01
Sale
2022-03-01
6:54 pm
Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director
500 $27.27 $13,635 76,873
(Direct)
View
2022-02-25
Sale
2022-03-01
4:07 pm
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
13,246 $28.77 $381,087 174,975
(Indirect
Direct)
View
2022-02-25
Sale
2022-03-01
4:05 pm
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
23,000 $28.47 $654,850 131,116
(Direct)
View
2022-02-08
Sale
2022-02-09
9:07 pm
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
7,000 $26.77 $187,390 188,221
(Indirect
Direct)
View
2022-02-08
Sale
2022-02-09
9:06 pm
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
10,000 $26.95 $269,500 154,116
(Direct)
View
2022-02-01
Sale
2022-02-02
4:05 pm
Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director
500 $24.08 $12,041 77,373
(Direct)
View
2022-01-10
Sale
2022-01-11
8:28 pm
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
20,928 $25.36 $530,684 195,221
(Indirect
Direct)
View
2022-01-07
Sale
2022-01-11
6:22 pm
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
47,776 $24.75 $1,182,622 223,596
(Direct)
View
2022-01-03
Sale
2022-01-04
4:54 pm
Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director
500 $23.22 $11,609 77,873
(Direct)
View
2021-12-30
Sale
2022-01-04
4:52 pm
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
10,000 $23.4 $234,000 204,595
(Direct)
View
2021-12-22
Sale
2021-12-23
4:27 pm
Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director
1,000 $22.5 $22,503 78,373
(Direct)
View
2021-12-21
Sale
2021-12-22
5:04 pm
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
8,256 $22.4 $184,934 214,595
(Direct)
View
2021-12-16
Sale
2021-12-17
7:52 pm
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
1,744 $22.4 $39,066 222,851
(Direct)
View
2021-12-10
Sale
2021-12-13
7:36 pm
Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director
5,291 $21.36 $113,006 55,179
(Direct)
View
2021-11-22
Sale
2021-11-23
8:17 pm
Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director
5,000 $21.22 $106,100 60,470
(Direct)
View
2021-11-11
Sale
2021-11-12
7:44 pm
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
7,813 $21.67 $169,308 187,789
(Indirect
Direct)
View
2021-11-11
Sale
2021-11-12
7:42 pm
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
10,000 $21.33 $213,300 125,489
(Direct)
View
2021-08-16
Sale
2021-08-17
4:25 pm
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
6,589 $19.35 $127,524 105,689
(Direct)
View
2021-08-02
Sale
2021-08-04
4:05 pm
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
9,123 $21.24 $193,734 195,602
(Indirect
Direct)
View
2021-08-02
Sale
2021-08-03
4:06 pm
Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center
8,932 $21.14 $188,805 56,536
(Indirect
Direct)
View
2021-07-26
Sale
2021-07-27
6:46 pm
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
6,000 $20.87 $125,220 204,725
(Indirect
Direct)
View
2021-07-20
Sale
2021-07-22
4:13 pm
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
5,187 $20.57 $106,697 210,725
(Indirect
Direct)
View
2021-07-15
Sale
2021-07-16
6:29 pm
Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center
31,524 $20.01 $630,688 92,712
(Indirect
Direct)
View
2021-07-07
Sale
2021-07-08
6:32 pm
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
10,000 $20.37 $203,739 142,078
(Direct)
View
2021-06-08
Sale
2021-06-10
4:45 pm
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
12,912 $19.43 $250,829 190,912
(Indirect
Direct)
View
2021-06-04
Sale
2021-06-08
8:59 pm
Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director
10,000 $18.74 $187,351 67,361
(Direct)
View
2021-06-07
Sale
2021-06-08
8:58 pm
Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director
15,827 $19.34 $306,039 96,555
(Direct)
View
2021-06-07
Sale
2021-06-08
8:56 pm
Amphastar Pharmaceuticals Inc. AMPH Lee Howard
Director
15,827 $19.3 $305,449 164,115
(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
2022-03-15
Option Award
2022-03-17
5:07 pm
N/A
2032-03-15
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
45,174 $0 218,497
(Direct)
View
2022-03-15
Tax Withholding
2022-03-17
5:07 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
1,652 $34.74 218,497
(Direct)
View
2022-03-15
Option Award
2022-03-17
5:05 pm
N/A
2032-03-15
Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & Chief Scientific Officer
10% Owner
361,571 $0 10,983,944
(Direct)
View
2022-03-15
Tax Withholding
2022-03-17
5:05 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Zhang Jack Y.
Luo Mary Z.
CEO & Chief Scientific Officer
10% Owner
19,545 $34.74 10,983,944
(Direct)
View
2022-03-07
Exercise
2022-03-09
4:06 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
13,026 $13.35 165,564
(Direct)
View
2022-03-07
Exercise
2022-03-09
4:06 pm
N/A
2027-03-16
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
13,026 $0 165,564
(Direct)
View
2022-02-25
Exercise
2022-03-01
4:07 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
7,000 $10.93 174,975
(Direct)
View
2022-02-25
Exercise
2022-03-01
4:07 pm
N/A
2023-07-30
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
7,000 $0 174,975
(Direct)
View
2022-02-25
Exercise
2022-03-01
4:05 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
23,000 $14.95 131,116
(Direct)
View
2022-02-25
Exercise
2022-03-01
4:05 pm
N/A
2025-03-26
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
23,000 $0 131,116
(Direct)
View
2022-02-08
Exercise
2022-02-09
9:07 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
7,000 $10.93 188,221
(Direct)
View
2022-02-08
Exercise
2022-02-09
9:07 pm
N/A
2023-07-30
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
7,000 $0 188,221
(Direct)
View
2022-02-08
Exercise
2022-02-09
9:06 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
10,000 $14.95 154,116
(Direct)
View
2022-02-08
Exercise
2022-02-09
9:06 pm
N/A
2025-03-26
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
10,000 $0 154,116
(Direct)
View
2022-01-10
Exercise
2022-01-11
8:28 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
14,000 $10.93 195,221
(Direct)
View
2022-01-10
Exercise
2022-01-11
8:28 pm
N/A
2023-07-30
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
14,000 $0 195,221
(Direct)
View
2022-01-07
Exercise
2022-01-11
6:22 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
47,776 $14.4 223,596
(Direct)
View
2022-01-07
Exercise
2022-01-11
6:22 pm
N/A
2024-04-21
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
47,776 $0 223,596
(Direct)
View
2021-12-30
Exercise
2022-01-04
4:52 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
10,000 $14.4 204,595
(Direct)
View
2021-12-30
Exercise
2022-01-04
4:52 pm
N/A
2024-04-21
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
10,000 $0 204,595
(Direct)
View
2021-12-21
Exercise
2021-12-22
5:04 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
8,256 $14.4 214,595
(Direct)
View
2021-12-21
Exercise
2021-12-22
5:04 pm
N/A
2024-04-21
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
8,256 $0 214,595
(Direct)
View
2021-12-16
Exercise
2021-12-17
7:52 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
1,744 $14.4 222,851
(Direct)
View
2021-12-16
Exercise
2021-12-17
7:52 pm
N/A
2024-04-21
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
1,744 $0 222,851
(Direct)
View
2021-12-10
Exercise
2021-12-13
7:36 pm
N/A
2022-06-08
Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director
5,291 $0 55,179
(Direct)
View
2021-12-10
Exercise
2021-12-13
7:36 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director
5,291 $17.11 55,179
(Direct)
View
2021-11-22
Exercise
2021-11-23
8:17 pm
N/A
2022-06-08
Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director
5,000 $0 60,470
(Direct)
View
2021-11-22
Exercise
2021-11-23
8:17 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director
5,000 $17.11 60,470
(Direct)
View
2021-11-11
Exercise
2021-11-12
7:44 pm
N/A
2022-11-07
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
7,813 $0 187,789
(Direct)
View
2021-11-11
Exercise
2021-11-12
7:44 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
7,813 $10.48 187,789
(Direct)
View
2021-11-11
Exercise
2021-11-12
7:42 pm
N/A
2026-03-17
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
10,000 $0 125,489
(Direct)
View
2021-11-11
Exercise
2021-11-12
7:42 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
10,000 $11.33 125,489
(Direct)
View
2021-08-02
Exercise
2021-08-04
4:05 pm
N/A
2022-11-07
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
6,000 $0 195,602
(Direct)
View
2021-08-02
Exercise
2021-08-04
4:05 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
6,000 $10.48 195,602
(Direct)
View
2021-08-02
Exercise
2021-08-03
4:06 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center
8,932 $14.95 56,536
(Direct)
View
2021-08-02
Exercise
2021-08-03
4:06 pm
N/A
2025-03-26
Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center
8,932 $0 56,536
(Direct)
View
2021-07-26
Exercise
2021-07-27
6:46 pm
N/A
2022-11-07
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
6,000 $0 204,725
(Direct)
View
2021-07-26
Exercise
2021-07-27
6:46 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
6,000 $10.48 204,725
(Direct)
View
2021-07-20
Exercise
2021-07-22
4:13 pm
N/A
2022-11-07
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
5,187 $0 210,725
(Direct)
View
2021-07-20
Exercise
2021-07-22
4:13 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
5,187 $10.48 210,725
(Direct)
View
2021-07-15
Exercise
2021-07-16
6:29 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center
23,352 $13.35 92,712
(Direct)
View
2021-07-15
Exercise
2021-07-16
6:29 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center
7,674 $13.03 92,712
(Direct)
View
2021-07-15
Exercise
2021-07-16
6:29 pm
N/A
2027-03-16
Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center
31,026 $0 92,712
(Direct)
View
2021-07-07
Exercise
2021-07-08
6:32 pm
N/A
2026-03-17
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
10,000 $0 142,078
(Direct)
View
2021-07-07
Exercise
2021-07-08
6:32 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH PETERS WILLIAM J
CFO, EVP & Treasurer
10,000 $11.33 142,078
(Direct)
View
2021-06-14
Tax Withholding
2021-06-15
4:20 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center
128 $19.68 57,034
(Direct)
View
2021-06-12
Tax Withholding
2021-06-14
4:06 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Lee Howard
Director
157 $19.92 138,776
(Direct)
View
2021-06-08
Exercise
2021-06-10
4:45 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
8,180 $14.23 190,912
(Direct)
View
2021-06-08
Exercise
2021-06-10
4:45 pm
N/A
2021-12-22
Amphastar Pharmaceuticals Inc. AMPH Zhou Rong
EVP, Production Center
8,180 $0 190,912
(Direct)
View
2021-06-07
Option Award
2021-06-08
9:01 pm
N/A
2029-06-07
Amphastar Pharmaceuticals Inc. AMPH ZASLOFF MICHAEL A
Director
23,201 $0 64,388
(Direct)
View
2021-06-04
Exercise
2021-06-08
8:59 pm
N/A
2021-06-09
Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director
10,000 $0 67,361
(Direct)
View
2021-06-04
Exercise
2021-06-08
8:59 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director
10,000 $16.43 67,361
(Direct)
View
2021-06-07
Option Award
2021-06-08
8:59 pm
N/A
2029-06-07
Amphastar Pharmaceuticals Inc. AMPH PRINS RICHARD K
Director
23,201 $0 67,361
(Direct)
View
2021-06-07
Exercise
2021-06-08
8:58 pm
N/A
2021-06-09
Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director
15,827 $0 96,555
(Direct)
View
2021-06-07
Exercise
2021-06-08
8:58 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director
15,827 $16.43 96,555
(Direct)
View
2021-06-07
Option Award
2021-06-08
8:58 pm
N/A
2029-06-07
Amphastar Pharmaceuticals Inc. AMPH Petersen Floyd F.
Director
23,201 $0 96,555
(Direct)
View
2021-06-07
Option Award
2021-06-08
8:57 pm
N/A
2029-06-07
Amphastar Pharmaceuticals Inc. AMPH Maris David
Director
23,201 $0 36,352
(Direct)
View
2021-06-07
Exercise
2021-06-08
8:56 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Lee Howard
Director
15,827 $16.43 164,115
(Direct)
View
2021-06-07
Option Award
2021-06-08
8:56 pm
N/A
2029-06-07
Amphastar Pharmaceuticals Inc. AMPH Lee Howard
Director
23,201 $0 164,115
(Direct)
View
2021-06-07
Option Award
2021-06-08
8:55 pm
N/A
2029-06-07
Amphastar Pharmaceuticals Inc. AMPH Koo Richard
Director
23,201 $0 286,471
(Direct)
View
2021-06-07
Option Award
2021-06-08
8:52 pm
N/A
2029-06-07
Amphastar Pharmaceuticals Inc. AMPH Gerst Diane G.
Director
11,601 $0 17,271
(Direct)
View
2021-06-07
Option Award
2021-06-08
8:51 pm
N/A
2029-06-07
Amphastar Pharmaceuticals Inc. AMPH Deflin Gayle
Director
23,201 $0 23,201
(Direct)
View
2021-06-04
Tax Withholding
2021-06-08
7:10 pm
N/A
N/A
Amphastar Pharmaceuticals Inc. AMPH Liawatidewi Yakob
EVP Corp Admin Center
264 $18.79 57,162
(Direct)
View
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