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Amphastar Pharmaceuticals, Inc. (AMPH)
All trades on this company by insiders. Hover over bubbles for specific trade details. Drag along the graph for custom price change. Green - Buy, Red - Sell, Orange - Congress Member.
Healthcare
Drug Manufacturers—Specialty & Generic
DATE
INSIDER
COMPANY
OWNED SHARES
SHARES TRADED
PRICE
NET TOTAL
SELL
5 Mar 2024
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
24,437
-33%
12,500
$47.18
$589,724.10
SELL
1 Mar 2024
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
79,882
-0%
500
$45.69
$22,847.34
SELL
1 Feb 2024
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
80,359
-0%
500
$53.10
$26,548.40
SELL
10 Jan 2024
Luo Mary Z.
COO,Chief Scientist & Chairman, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
1,157,566
-10%
131,386
$54.59
$7,171,767.00
SELL
8 Jan 2024
Luo Mary Z.
COO,Chief Scientist & Chairman, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
1,271,280
-14%
219,800
$58.23
$12,798,709.00
SELL
2 Jan 2024
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
81,186
-0%
500
$61.37
$30,682.93
SELL
17 Nov 2023
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
31,895
-11%
4,000
$55.86
$223,445.61
SELL
14 Nov 2023
Deflin Gayle
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
2,716
-60%
4,163
$55.45
$230,838.36
SELL
14 Nov 2023
PETERS WILLIAM J
CFO, EVP & Treasurer, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
146,390
-28%
59,250
$55.67
$3,298,474.80
SELL
13 Nov 2023
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
35,895
-12%
5,000
$52.50
$262,500.00
SELL
1 Nov 2023
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
81,833
-0%
500
$45.30
$22,651.05
SELL
6 Sep 2023
PETERS WILLIAM J
CFO, EVP & Treasurer, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
101,419
-37%
60,743
$51.75
$3,143,195.20
SELL
28 Aug 2023
Liawatidewi Yakob
EVP Corp Admin Center, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
69,669
-29%
28,816
$53.13
$1,530,994.10
SELL
18 Aug 2023
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
40,895
-4%
2,000
$52.50
$105,005.60
SELL
15 Aug 2023
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
42,895
-8%
4,163
$57.39
$238,911.23
SELL
15 Aug 2023
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
33,826
-27%
12,759
$57.22
$730,025.30
SELL
15 Jun 2023
PETERS WILLIAM J
CFO, EVP & Treasurer, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
130,603
-22%
36,868
$50.85
$1,874,789.80
SELL
15 Jun 2023
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
96,888
-4%
5,000
$51.79
$258,946.50
SELL
13 Jun 2023
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
88,313
-5%
5,000
$48.24
$241,200.02
SELL
2 Jun 2023
PETERS WILLIAM J
CFO, EVP & Treasurer, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
105,603
-9%
11,000
$46.35
$509,858.78
SELL
1 Jun 2023
Lee Howard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
142,939
-10%
16,679
$45.02
$750,960.30
SELL
18 May 2023
Deflin Gayle
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
4,163
-52%
4,519
$44.01
$198,888.42
SELL
18 May 2023
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
87,598
-10%
10,000
$44.21
$442,050.03
SELL
18 May 2023
PETERS WILLIAM J
CFO, EVP & Treasurer, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
105,148
-9%
10,500
$44.35
$465,674.97
SELL
17 May 2023
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
80,117
-5%
5,000
$43.13
$215,655.00
SELL
15 May 2023
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
43,869
-14%
7,500
$42.18
$316,335.00
SELL
12 May 2023
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
44,342
-18%
10,000
$42.78
$427,824.50
SELL
17 Apr 2023
PETERS WILLIAM J
CFO, EVP & Treasurer, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
105,148
-5%
5,632
$42.35
$238,515.19
SELL
13 Apr 2023
PETERS WILLIAM J
CFO, EVP & Treasurer, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
105,148
-4%
4,868
$42.35
$206,159.80
SELL
13 Apr 2023
Liawatidewi Yakob
EVP Corp Admin Center, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
75,709
-13%
11,494
$41.56
$477,748.00
SELL
10 Apr 2023
PETERS WILLIAM J
CFO, EVP & Treasurer, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
105,148
-8%
10,032
$40.35
$404,791.20
SELL
10 Apr 2023
Liawatidewi Yakob
EVP Corp Admin Center, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
69,215
-6%
5,000
$40.00
$200,000.00
SELL
3 Apr 2023
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
85,117
-0%
491
$37.72
$18,518.75
SELL
15 Mar 2023
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
118,451
-9%
12,776
$36.43
$465,471.84
SELL
1 Mar 2023
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
86,107
-0%
500
$36.70
$18,349.27
SELL
1 Mar 2023
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
100,614
-9%
10,974
$36.33
$398,685.44
SELL
1 Feb 2023
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
86,108
-0%
500
$30.35
$15,175.65
SELL
3 Jan 2023
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
86,608
-0%
500
$27.94
$13,971.00
SELL
1 Dec 2022
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
87,108
-0%
500
$30.13
$15,067.45
SELL
1 Nov 2022
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
87,608
-0%
500
$31.13
$15,565.30
SELL
3 Oct 2022
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
88,108
-0%
500
$28.59
$14,296.15
SELL
1 Sep 2022
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
88,608
-0%
500
$29.44
$14,721.50
SELL
9 Aug 2022
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
100,480
-9%
10,000
$38.35
$383,500.00
SELL
18 Jul 2022
Gerst Diane G.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
12,842
-10%
1,520
$37.23
$56,596.59
SELL
15 Jul 2022
Liawatidewi Yakob
EVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
68,966
-13%
10,837
$36.64
$397,083.00
SELL
11 Jul 2022
Gerst Diane G.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
12,842
-10%
1,521
$36.26
$55,144.92
SELL
5 Jul 2022
Gerst Diane G.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
12,842
-12%
1,813
$35.00
$63,460.26
SELL
1 Jul 2022
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
89,608
-0%
500
$34.78
$17,390.85
SELL
30 Jun 2022
Gerst Diane G.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
12,842
-28%
5,146
$35.00
$180,110.00
SELL
30 Jun 2022
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
100,480
-15%
18,386
$34.95
$642,590.70
SELL
17 Jun 2022
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
100,480
-5%
5,512
$32.05
$176,681.66
SELL
6 Jun 2022
Lee Howard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
138,776
-6%
10,291
$37.79
$388,858.80
SELL
1 Jun 2022
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
86,065
-0%
500
$37.00
$18,499.22
SELL
23 May 2022
Lee Howard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
138,776
-6%
10,000
$34.93
$349,323.00
SELL
20 May 2022
Zhang Jack Y.
CEO & Chief Scientific Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
2,104,143
-0%
10,650
$34.21
$364,365.25
SELL
18 May 2022
Zhang Jack Y.
CEO & Chief Scientific Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
2,114,908
-4%
108,776
$34.00
$3,697,861.20
SELL
18 May 2022
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
86,445
-10%
9,924
$35.05
$347,826.28
SELL
16 May 2022
Zhang Jack Y.
CEO & Chief Scientific Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
2,226,406
-5%
118,445
$35.75
$4,234,896.50
SELL
16 May 2022
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
47,206
-17%
10,291
$35.61
$366,499.56
SELL
2 May 2022
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
76,105
-0%
295
$35.18
$10,378.30
SELL
1 Apr 2022
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
76,436
-0%
500
$36.69
$18,344.72
SELL
16 Mar 2022
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
117,904
-30%
50,777
$33.96
$1,724,427.40
SELL
16 Mar 2022
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
47,206
-17%
10,000
$33.71
$337,069.00
SELL
15 Mar 2022
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
45,179
-18%
10,000
$34.02
$340,208.00
SELL
15 Mar 2022
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
98,142
-7%
7,900
$34.46
$272,248.22
SELL
7 Mar 2022
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
106,042
-10%
13,026
$29.35
$382,313.10
SELL
1 Mar 2022
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
76,873
-0%
500
$27.27
$13,635.15
SELL
25 Feb 2022
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
70,307
-15%
13,246
$28.77
$381,087.44
SELL
25 Feb 2022
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
118,042
-16%
23,000
$28.47
$654,850.00
SELL
8 Feb 2022
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
76,553
-8%
7,000
$26.77
$187,390.00
SELL
8 Feb 2022
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
106,042
-8%
10,000
$26.95
$269,500.00
SELL
1 Feb 2022
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
77,784
-0%
500
$24.08
$12,040.94
SELL
10 Jan 2022
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
86,804
-19%
20,928
$25.36
$530,683.75
SELL
7 Jan 2022
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
106,042
-31%
47,776
$24.75
$1,182,622.40
SELL
3 Jan 2022
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
77,873
-0%
500
$23.22
$11,608.65
SELL
30 Dec 2021
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
106,042
-8%
10,000
$23.40
$234,000.00
SELL
22 Dec 2021
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
78,373
-1%
1,000
$22.50
$22,502.80
SELL
21 Dec 2021
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
106,042
-7%
8,256
$22.40
$184,934.39
SELL
16 Dec 2021
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
106,042
-1%
1,744
$22.40
$39,065.60
SELL
10 Dec 2021
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
45,179
-10%
5,291
$21.36
$113,006.23
SELL
22 Nov 2021
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
45,179
-9%
5,000
$21.22
$106,100.00
SELL
11 Nov 2021
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
83,121
-8%
7,813
$21.67
$169,307.70
SELL
11 Nov 2021
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
105,689
-8%
10,000
$21.33
$213,300.00
SELL
16 Aug 2021
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
105,689
-5%
6,589
$19.35
$127,524.16
SELL
2 Aug 2021
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
83,121
-9%
9,123
$21.24
$193,734.20
SELL
2 Aug 2021
Liawatidewi Yakob
EVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
54,077
-14%
8,932
$21.14
$188,804.62
SELL
26 Jul 2021
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
86,244
-6%
6,000
$20.87
$125,220.01
SELL
20 Jul 2021
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
86,244
-5%
5,187
$20.57
$106,696.59
SELL
15 Jul 2021
Liawatidewi Yakob
EVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
54,077
-36%
31,524
$20.01
$630,688.06
SELL
7 Jul 2021
PETERS WILLIAM J
CFO, EVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
112,278
-8%
10,000
$20.37
$203,739.00
SELL
8 Jun 2021
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
86,244
-13%
12,912
$19.43
$250,829.22
SELL
7 Jun 2021
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
73,354
-17%
15,827
$19.34
$306,038.78
SELL
7 Jun 2021
Lee Howard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
138,933
-10%
15,827
$19.30
$305,449.34
SELL
4 Jun 2021
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
39,160
-20%
10,000
$18.74
$187,351.00
SELL
3 Jun 2021
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
73,354
-11%
10,000
$18.65
$186,527.00
SELL
1 Jun 2021
Koo Richard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
253,270
-9%
25,827
$19.28
$498,009.12
SELL
20 May 2021
Lee Howard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
132,914
-6%
10,000
$19.74
$197,354.00
SELL
14 May 2021
Liawatidewi Yakob
SVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
53,573
-19%
12,823
$19.98
$256,139.69
SELL
13 May 2021
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
41,187
-38%
25,827
$19.34
$499,434.78
SELL
11 May 2021
Liawatidewi Yakob
EVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
56,759
-20%
14,592
$19.14
$279,339.25
SELL
11 May 2021
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
39,160
-28%
15,827
$18.90
$299,109.75
SELL
15 Mar 2021
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
85,304
-4%
4,244
$19.03
$80,745.07
SELL
16 Feb 2021
Zhang Jack Y.
CEO & Chief Scientific Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
6,827,679
-0%
30,467
$18.59
$566,315.50
SELL
10 Feb 2021
Zhang Jack Y.
CEO & Chief Scientific Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
6,858,146
-0%
48,847
$18.93
$924,750.50
SELL
5 Feb 2021
Zhang Jack Y.
CEO & Chief Scientific Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
6,906,993
-0%
40,886
$18.92
$773,546.00
SELL
3 Feb 2021
Zhang Jack Y.
CEO & Chief Scientific Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
6,947,879
-0%
41,869
$18.69
$782,342.90
SELL
1 Feb 2021
Zhang Jack Y.
CEO & Chief Scientific Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
6,989,748
-0%
37,931
$18.43
$698,940.90
SELL
1 Feb 2021
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
73,354
-0%
639
$18.26
$11,668.91
SELL
19 Jan 2021
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
89,548
-6%
6,495
$18.67
$121,236.98
SELL
1 Dec 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
73,993
-0%
500
$17.87
$8,935.55
SELL
2 Nov 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
74,493
-0%
500
$19.84
$9,919.95
SELL
1 Oct 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
74,993
-0%
500
$18.89
$9,445.80
SELL
1 Sep 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
75,493
-0%
500
$19.90
$9,948.05
BUY
14 Aug 2020
Maris David
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
13,151
+8%
1,000
$20.26
$20,260.00
SELL
14 Aug 2020
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
95,652
-5%
5,512
$20.36
$112,223.22
SELL
11 Aug 2020
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
39,160
-13%
6,000
$20.33
$121,976.40
SELL
3 Aug 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
75,993
-0%
500
$20.62
$10,307.75
SELL
20 Jul 2020
Liawatidewi Yakob
EVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
45,996
-18%
10,164
$21.14
$214,883.67
SELL
6 Jul 2020
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
101,164
-11%
13,656
$22.00
$300,404.70
SELL
1 Jul 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
76,493
-0%
500
$22.27
$11,135.60
SELL
9 Jun 2020
Liawatidewi Yakob
EVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
46,124
-33%
23,405
$20.41
$477,602.44
SELL
3 Jun 2020
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
79,236
-22%
22,969
$18.98
$435,854.78
SELL
1 Jun 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
71,142
-0%
500
$18.97
$9,483.40
SELL
27 May 2020
Koo Richard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
247,419
-16%
47,782
$18.18
$868,891.75
SELL
22 May 2020
Lee Howard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
128,081
-13%
20,000
$18.48
$369,628.00
SELL
20 May 2020
Lee Howard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
128,081
-17%
27,782
$18.45
$512,466.20
SELL
14 May 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
71,642
-39%
47,682
$18.20
$867,843.80
SELL
14 May 2020
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
35,336
-51%
37,782
$18.02
$680,656.60
SELL
13 May 2020
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
89,966
-16%
18,119
$19.71
$357,170.38
SELL
12 May 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
71,642
-0%
100
$19.20
$1,920.00
SELL
12 May 2020
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
35,336
-22%
10,000
$19.00
$190,000.00
SELL
12 May 2020
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
39,309
-43%
30,282
$19.00
$575,418.56
SELL
1 May 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
71,642
-0%
500
$16.66
$8,328.80
SELL
1 Apr 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
72,142
-0%
500
$14.36
$7,181.30
SELL
13 Mar 2020
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
76,011
-5%
4,701
$13.94
$65,538.67
SELL
2 Mar 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
72,642
-0%
500
$15.56
$7,781.75
SELL
5 Feb 2020
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
138,898
-24%
44,401
$19.75
$876,765.06
SELL
3 Feb 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
73,142
-0%
500
$19.12
$9,558.30
SELL
21 Jan 2020
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
78,975
-4%
3,990
$20.07
$80,070.52
SELL
8 Jan 2020
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
138,898
-15%
25,000
$18.44
$460,977.50
SELL
2 Jan 2020
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
73,642
-1%
1,000
$19.14
$19,141.60
SELL
18 Dec 2019
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
138,898
-5%
8,205
$19.13
$156,957.55
SELL
2 Dec 2019
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
74,642
-0%
500
$19.25
$9,623.00
SELL
1 Nov 2019
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
75,142
-0%
500
$19.48
$9,738.00
SELL
1 Oct 2019
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
75,642
-0%
500
$19.92
$9,958.75
SELL
18 Sep 2019
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
147,103
-4%
7,340
$21.32
$156,509.34
SELL
16 Sep 2019
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
76,142
-0%
500
$21.75
$10,876.70
SELL
16 Sep 2019
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
82,453
-10%
9,800
$21.76
$213,255.83
SELL
13 Sep 2019
Liawatidewi Yakob
SVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
33,670
-8%
3,000
$21.45
$64,340.10
SELL
11 Sep 2019
Zhang Jack Y.
CEO & Chief Scientific Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
7,027,679
-4%
300,000
$20.82
$6,246,000.00
SELL
5 Sep 2019
Liawatidewi Yakob
SVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
2,459
-61%
3,910
$21.65
$84,638.41
SELL
23 Aug 2019
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
39,309
-16%
7,500
$22.59
$169,420.42
SELL
15 Aug 2019
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
82,453
-5%
4,942
$21.00
$103,782.00
SELL
13 Aug 2019
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
39,309
-20%
10,000
$20.78
$207,780.98
SELL
12 Aug 2019
Liawatidewi Yakob
SVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
36,670
-29%
15,518
$20.53
$318,614.62
SELL
10 Jul 2019
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
154,443
-4%
6,615
$20.31
$134,333.45
SELL
6 May 2019
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
57,107
-14%
9,600
$22.76
$218,496.00
SELL
1 May 2019
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
159,947
-5%
10,000
$21.97
$219,700.00
SELL
16 Apr 2019
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
159,947
-5%
9,478
$20.67
$195,878.98
SELL
14 Mar 2019
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
160,490
-16%
32,336
$20.35
$657,930.50
SELL
4 Mar 2019
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
75,550
-1%
1,500
$25.36
$38,036.55
SELL
1 Mar 2019
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
52,030
-5%
3,200
$25.00
$80,000.00
SELL
1 Mar 2019
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
168,318
-4%
7,500
$24.99
$187,425.00
SELL
15 Feb 2019
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
75,550
-11%
10,016
$24.37
$244,089.92
SELL
14 Feb 2019
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
168,318
-4%
7,519
$23.99
$180,380.81
SELL
12 Feb 2019
Liawatidewi Yakob
SVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
35,883
-19%
8,868
$23.86
$211,632.00
SELL
5 Feb 2019
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
52,030
-7%
4,289
$23.00
$98,647.00
SELL
5 Feb 2019
Liawatidewi Yakob
SVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
35,883
-24%
11,397
$23.18
$264,166.50
SELL
23 Jan 2019
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
168,518
-8%
15,497
$22.39
$347,019.47
SELL
22 Jan 2019
Liawatidewi Yakob
SVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
37,463
-15%
7,000
$22.52
$157,650.00
SELL
14 Jan 2019
Liawatidewi Yakob
SVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
37,463
-7%
3,183
$22.15
$70,503.45
SELL
2 Jan 2019
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
75,550
-4%
3,245
$19.52
$63,354.41
SELL
14 Dec 2018
Zhang Jack Y.
CEO & Chief Scientific Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
2,072,317
-2%
43,577
$20.48
$892,308.80
SELL
14 Dec 2018
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
33,818
-4%
1,616
$20.65
$33,370.40
SELL
11 Dec 2018
Applied Physics & Chemistry Laboratories, Inc.
10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
7,327,679
-1%
133,915
$21.29
$2,851,052.50
SELL
11 Dec 2018
Zhang Jack Y.
CEO & Chief Scientific Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
7,327,679
-1%
133,915
$21.29
$2,851,052.50
SELL
11 Dec 2018
Koo Richard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
241,928
-10%
29,278
$21.32
$624,075.20
SELL
10 Dec 2018
Shohet Stephen B.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
30,706
-65%
58,557
$21.72
$1,271,782.00
SELL
4 Dec 2018
Lee Howard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
123,381
-19%
29,278
$21.67
$634,463.56
SELL
3 Dec 2018
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
53,119
-2%
1,089
$22.00
$23,958.00
SELL
3 Dec 2018
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
183,815
-8%
16,630
$22.44
$373,177.22
SELL
3 Dec 2018
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
78,795
-11%
10,000
$22.40
$224,001.00
SELL
30 Nov 2018
Liawatidewi Yakob
SVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
37,463
-27%
13,980
$21.50
$300,513.40
SELL
29 Nov 2018
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
35,434
-12%
5,000
$20.50
$102,500.00
SELL
28 Nov 2018
Liawatidewi Yakob
SVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
8,849
-14%
1,520
$20.49
$31,140.24
SELL
23 Nov 2018
Liawatidewi Yakob
SVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
37,463
-3%
1,299
$20.26
$26,314.75
SELL
14 Nov 2018
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
183,890
-8%
16,015
$20.41
$326,854.66
SELL
14 Nov 2018
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
29,845
-49%
29,278
$20.39
$596,949.10
SELL
14 Nov 2018
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
35,434
-12%
5,000
$20.23
$101,166.50
SELL
8 Nov 2018
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
53,303
-3%
2,173
$20.50
$44,549.00
SELL
8 Nov 2018
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
199,505
-20%
52,296
$20.77
$1,086,420.00
SELL
8 Nov 2018
Liawatidewi Yakob
SVP Corp Admin Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
38,762
-31%
17,808
$20.97
$373,420.53
SELL
8 Nov 2018
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
78,152
-32%
38,484
$20.74
$797,972.40
SELL
16 Aug 2018
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
86,836
-2%
2,407
$17.59
$42,332.87
SELL
14 Aug 2018
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
35,434
-22%
10,000
$17.82
$178,180.02
SELL
11 Jul 2018
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
199,505
-6%
14,399
$16.77
$241,422.27
SELL
9 Jul 2018
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
89,243
-3%
3,250
$16.46
$53,497.92
SELL
12 Jun 2018
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
29,845
-33%
15,000
$16.52
$247,842.00
BUY
15 May 2018
Zhang Jack Y.
CEO & Chief Scientific Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
2,080,619
+1%
40,000
$16.07
$642,823.50
SELL
16 Mar 2018
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
224,886
-8%
20,000
$19.43
$388,638.00
SELL
15 Mar 2018
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
28,844
-36%
16,598
$19.90
$330,318.47
SELL
13 Mar 2018
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
216,948
-0%
700
$20.45
$14,315.00
SELL
13 Mar 2018
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
78,314
-20%
19,801
$20.10
$398,004.06
SELL
25 Jan 2018
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
216,948
-7%
18,627
$19.42
$361,747.12
SELL
19 Dec 2017
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
30,164
-1%
523
$19.48
$10,185.64
SELL
14 Dec 2017
Shohet Stephen B.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
24,116
-24%
7,866
$18.87
$148,429.84
SELL
12 Dec 2017
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
30,687
-1%
523
$18.96
$9,916.92
SELL
7 Dec 2017
Shohet Stephen B.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
24,116
-24%
7,862
$18.34
$144,209.52
SELL
1 Dec 2017
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
78,314
-7%
6,226
$19.67
$122,465.42
SELL
30 Nov 2017
Shohet Stephen B.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
24,116
-24%
7,862
$19.25
$151,344.28
SELL
28 Nov 2017
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
31,210
-1%
523
$18.15
$9,492.76
SELL
22 Nov 2017
Shohet Stephen B.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
24,116
-24%
7,862
$18.94
$148,895.28
SELL
21 Nov 2017
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
31,733
-1%
523
$18.81
$9,839.25
SELL
16 Nov 2017
Shohet Stephen B.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
24,116
-24%
7,862
$18.04
$141,861.94
SELL
15 Nov 2017
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
32,256
-1%
523
$17.77
$9,291.57
SELL
9 Nov 2017
Shohet Stephen B.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
31,178
-20%
7,862
$18.55
$145,844.98
SELL
7 Nov 2017
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
32,779
-1%
523
$17.93
$9,375.30
SELL
2 Nov 2017
Shohet Stephen B.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
24,116
-24%
7,862
$18.37
$144,459.53
SELL
26 Oct 2017
Shohet Stephen B.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
24,116
-24%
7,862
$18.39
$144,618.34
SELL
24 Oct 2017
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
33,302
-1%
523
$18.29
$9,567.60
SELL
19 Oct 2017
Shohet Stephen B.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
24,116
-24%
7,862
$18.34
$144,194.58
SELL
17 Oct 2017
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
33,825
-1%
523
$18.48
$9,664.88
SELL
13 Oct 2017
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
83,496
-3%
3,026
$18.56
$56,176.48
SELL
12 Oct 2017
Shohet Stephen B.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
24,116
-24%
7,862
$18.73
$147,219.11
SELL
5 Oct 2017
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
34,348
-19%
8,444
$18.87
$159,376.28
SELL
4 Oct 2017
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
64,561
-37%
39,312
$18.59
$730,755.06
SELL
2 Oct 2017
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
38,255
-62%
63,624
$18.18
$1,156,951.50
SELL
14 Aug 2017
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
28,844
-25%
10,000
$14.81
$148,084.00
SELL
8 Jun 2017
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
28,844
-25%
10,000
$17.07
$170,707.00
SELL
1 Jun 2017
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
32,411
-31%
15,000
$17.01
$255,200.98
SELL
30 May 2017
Shandell Jason B.
President and General Counsel, Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
237,688
-4%
11,482
$16.92
$194,300.39
SELL
30 May 2017
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
86,522
-4%
4,297
$16.93
$72,730.59
SELL
11 May 2017
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
23,000
-24%
7,500
$15.43
$115,725.00
SELL
3 Jan 2017
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
58,717
-0%
400
$18.61
$7,444.00
SELL
15 Dec 2016
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
26,195
-10%
2,940
$20.51
$60,286.75
SELL
5 Dec 2016
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
36,991
-0%
61
$20.70
$1,262.43
SELL
1 Dec 2016
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
59,117
-0%
400
$20.26
$8,104.00
SELL
25 Nov 2016
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
202,961
-11%
26,335
$20.48
$539,258.10
SELL
14 Nov 2016
Lee Howard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
114,527
-24%
37,994
$20.65
$784,680.44
SELL
11 Nov 2016
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
23,000
-25%
8,000
$20.06
$160,500.80
SELL
1 Nov 2016
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
59,517
-0%
400
$18.09
$7,236.00
SELL
3 Oct 2016
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
59,917
-0%
400
$18.75
$7,500.00
SELL
26 Sep 2016
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
202,961
-21%
56,996
$19.50
$1,111,268.10
SELL
20 Sep 2016
Zhang Jack Y.
CEO & Chief Science Officer, Director, Officer, 10% Owner
Amphastar Pharmaceuticals, Inc.
(AMPH)
1,088,835
-28%
444,199
$21.03
$9,342,804.00
SELL
8 Sep 2016
Petersen Floyd F.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
60,317
-4%
3,000
$19.05
$57,150.00
SELL
1 Sep 2016
Lee Howard
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
114,527
-8%
10,381
$18.78
$194,916.78
SELL
22 Aug 2016
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
202,961
-4%
10,000
$19.95
$199,500.00
SELL
19 Aug 2016
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
28,985
-45%
24,046
$19.28
$463,606.90
SELL
18 Aug 2016
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
26,000
-10%
3,086
$19.62
$60,539.29
SELL
17 Aug 2016
Shandell Jason B.
President and General Counsel, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
202,961
-2%
5,987
$18.86
$112,908.83
SELL
12 Aug 2016
Shohet Stephen B.
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
18,272
-72%
48,375
$18.24
$882,280.75
SELL
12 Aug 2016
ZASLOFF MICHAEL A
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
32,411
-59%
48,375
$18.15
$878,106.10
SELL
12 Aug 2016
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
63,625
-1%
1,027
$18.19
$18,680.72
SELL
11 Aug 2016
Shandell Jason B.
President, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
208,948
-2%
5,636
$18.01
$101,482.38
SELL
11 Aug 2016
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
29,086
-32%
13,993
$18.03
$252,274.20
SELL
18 Jul 2016
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
64,652
-3%
2,297
$17.76
$40,794.72
SELL
15 Jun 2016
Zhou Rong
EVP, Production Center, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
37,137
-4%
1,551
$15.85
$24,583.81
SELL
9 Jun 2016
Shandell Jason B.
President, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
216,610
-4%
9,904
$16.43
$162,722.72
SELL
9 Jun 2016
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
29,086
-20%
7,500
$15.94
$119,535.75
SELL
2 Jun 2016
PETERS WILLIAM J
CFO, SVP & Treasurer, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
66,949
-3%
2,297
$16.00
$36,752.00
SELL
25 May 2016
Shandell Jason B.
President, Director, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
226,514
-0%
1,074
$15.60
$16,754.40
SELL
18 May 2016
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
28,649
-4%
1,427
$13.97
$19,939.33
SELL
17 May 2016
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
23,000
-12%
3,200
$13.56
$43,391.36
SELL
18 Apr 2016
Gerst Diane G.
EVP, QA & Regulatory Affairs, Officer
Amphastar Pharmaceuticals, Inc.
(AMPH)
30,076
-41%
21,244
$12.89
$273,774.12
SELL
17 Mar 2016
PRINS RICHARD K
Director
Amphastar Pharmaceuticals, Inc.
(AMPH)
26,200
-8%
2,400
$11.25
$27,000.00
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