S&P 500   4,538.43
DOW   34,580.08
QQQ   383.13
S&P 500   4,538.43
DOW   34,580.08
QQQ   383.13
S&P 500   4,538.43
DOW   34,580.08
QQQ   383.13
S&P 500   4,538.43
DOW   34,580.08
QQQ   383.13
NASDAQ:AMPH

Amphastar Pharmaceuticals Insider Trades

$20.41
+0.31 (+1.54%)
(As of 12/3/2021 12:00 AM ET)
Add
Compare
Today's Range
$20.12
$20.66
50-Day Range
$17.88
$21.30
52-Week Range
$16.91
$21.70
Volume
179,229 shs
Average Volume
245,088 shs
Market Capitalization
$976.62 million
P/E Ratio
28.35
Dividend Yield
N/A
Beta
0.67

Amphastar Pharmaceuticals (NASDAQ:AMPH) Insider Buying and Selling Activity

Current
Insider Ownership
Percentage
28.40%

Number Of
Insiders Buying
(Last 12 Months)
0

Number Of
Insiders Selling
(Last 12 Months)
10

Amount Of
Insider Selling
(Last 12 Months)
$6.81 M

Skip Chart & View Insider Trade History

Insider Buying and Selling by Quarter

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Amphastar Pharmaceuticals (NASDAQ AMPH) Insider Trading History

Transaction DateInsider NameTitleBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
11/22/2021Richard K PrinsDirectorSell5,000$21.22$106,100.00  
11/11/2021Rong ZhouEVPSell7,813$21.67$169,307.71  
11/11/2021William J PetersCFOSell10,000$21.33$213,300.00  
7/26/2021Rong ZhouEVPSell6,000$20.87$125,220.0092,244  
7/20/2021Rong ZhouEVPSell5,187$20.57$106,696.59  
7/15/2021Yakob LiawatidewiEVPSell31,524$20.01$630,795.2477,927  
7/7/2021William J PetersCFOSell10,000$20.37$203,700.00  
6/8/2021Rong ZhouEVPSell8,180$19.34$158,201.20  
6/7/2021Richard K PrinsDirectorSell5,000$18.70$93,500.00140,741  
6/3/2021Floyd F PetersenDirectorSell10,000$18.65$186,500.0083,354  
6/1/2021Richard KooDirectorSell25,827$19.28$497,944.56279,097  
5/20/2021Howard LeeDirectorSell10,000$19.74$197,400.00142,914  
5/13/2021Michael A ZasloffDirectorSell25,827$19.34$499,494.1867,014  
5/13/2021Rong ZhouEVPSell700$19.58$13,706.0096,965  
5/11/2021Richard K PrinsDirectorSell15,827$18.90$299,130.3054,987  
5/11/2021Yakob LiawatidewiEVPSell10,000$19.06$190,600.0071,351  
3/15/2021William J PetersCFOSell4,244$19.03$80,763.3285,304  
2/18/2021Jack Y ZhangCEOSell30,467$18.59$566,381.53
2/11/2021Jack Y ZhangCEOSell19,823$19.06$377,826.382,246,988  
2/9/2021Jack Y ZhangCEOSell40,886$18.92$773,563.122,246,988  
2/4/2021Jack Y ZhangCEOSell25,570$18.89$483,017.302,246,988  
2/2/2021Jack Y ZhangCEOSell37,931$18.43$699,068.332,246,988  
2/1/2021Floyd F PetersenDirectorSell639$18.26$11,668.1473,354  
1/19/2021William J. PetersCFOSell6,495$18.67$121,261.65  
12/1/2020Floyd F PetersenDirectorSell500$17.87$8,935.0073,993  
11/2/2020Floyd F PetersenDirectorSell500$19.84$9,920.0074,493  
9/1/2020Floyd F PetersenDirectorSell500$19.90$9,950.0075,493  
8/14/2020David MarisDirectorBuy1,000$20.26$20,260.0013,151  
8/14/2020William J PetersCFOSell5,512$20.36$112,224.3295,652  
8/11/2020Richard K PrinsDirectorSell6,000$20.33$121,980.0039,160  
8/3/2020Floyd F PetersenDirectorSell500$20.62$10,310.0075,993  
7/21/2020Yakob LiawatidewiEVPSell5,978$21.22$126,853.1650,182  
7/6/2020William J. PetersCFOSell13,656$22.00$300,432.00  
7/1/2020Floyd F PetersenDirectorSell500$22.27$11,135.0076,493  
6/9/2020Yakob LiawatidewiEVPSell23,405$20.12$470,908.6069,529  
6/3/2020Rong ZhouEVPSell13,163$18.82$247,727.66  
6/1/2020Floyd F PetersenDirectorSell500$18.97$9,485.0071,142  
5/27/2020Richard KooDirectorSell47,782$18.18$868,676.76295,201  
5/20/2020Howard LeeDirectorSell17,782$18.43$327,722.26145,863  
5/14/2020Michael A ZasloffDirectorSell14,832$18.00$266,976.0050,168  
5/12/2020Michael A ZasloffDirectorSell10,000$19.00$190,000.0045,336  
5/1/2020Floyd F PetersenDirectorSell500$16.66$8,330.0071,642  
4/1/2020Floyd F PetersenDirectorSell500$14.36$7,180.0072,142  
3/13/2020William J PetersCFOSell4,701$13.94$65,531.9476,011  
2/6/2020Jason B ShandellGeneral CounselSell21,933$19.83$434,931.39154,513  
1/21/2020William J. PetersCFOSell3,990$20.07$80,079.30  
1/8/2020Jason B ShandellGeneral CounselSell25,000$18.44$461,000.00163,898  
1/2/2020Floyd F PetersenDirectorSell1,000$19.14$19,140.0073,642  
12/18/2019Jason B ShandellGeneral CounselSell8,205$19.13$156,961.65138,898  
12/2/2019Floyd F PetersenDirectorSell500$19.25$9,625.0074,642  
11/1/2019Floyd F PetersenDirectorSell500$19.48$9,740.0075,142  
10/1/2019Floyd F PetersenDirectorSell500$19.92$9,960.0075,642  
9/18/2019Jason B ShandellGeneral CounselSell7,340$21.32$156,488.80147,103  
9/16/2019Floyd F PetersenDirectorSell500$21.75$10,875.0076,142  
9/16/2019William J PetersCFOSell9,800$21.76$213,248.0092,253  
9/13/2019Yakob LiawatidewiSVPSell3,000$21.45$64,350.0033,670  
9/11/2019Jack Y ZhangCEOSell300,000$20.82$6,246,000.002,147,316  
9/5/2019Yakob LiawatidewiSVPSell1,515$21.24$32,178.6036,670  
8/26/2019Richard K PrinsDirectorSell7,500$22.59$169,425.0043,191  
8/23/2019Richard K PrinsDirectorSell3,882$22.58$87,655.5643,191  
8/15/2019William J. PetersCFOSell4,942$21.00$103,782.00  
8/13/2019Richard K PrinsDirectorSell10,000$20.78$207,800.0049,309  
8/13/2019Yakob LiawatidewiSVPSell5,000$20.73$103,650.0047,188  
7/10/2019Jason B. ShandellInsiderSell6,615$20.31$134,350.65  
5/6/2019Rong ZhouEVPSell9,600$22.76$218,496.0066,707  
5/1/2019Jason B ShandellInsiderSell10,000$21.97$219,700.00  
4/16/2019Jason B ShandellGeneral CounselSell9,478$20.67$195,910.26159,947  
3/15/2019Jason B ShandellInsiderSell32,336$20.35$658,037.60160,490  
3/4/2019William J PetersCFOSell1,500$25.36$38,040.0077,050  
3/1/2019Jason B ShandellInsiderSell7,500$24.99$187,425.00175,818  
3/1/2019Rong ZhouEVPSell3,200$25.00$80,000.0055,230  
2/15/2019William J PetersCFOSell10,016$24.37$244,089.9285,566  
2/14/2019Jason B ShandellInsiderSell7,519$23.99$180,380.81175,837  
2/14/2019Yakob LiawatidewiSVPSell8,868$23.86$211,590.4839,883  
2/12/2019Yakob LiawatidewiSVPSell4,000$23.70$94,800.0039,883  
2/5/2019Rong ZhouEVPSell4,289$23.00$98,647.0056,319  
2/5/2019Yakob LiawatidewiSVPSell11,397$23.18$264,182.4647,280  
1/23/2019Jason B ShandellInsiderSell15,497$22.39$346,977.83168,518  
1/23/2019Yakob LiawatidewiSVPSell7,000$22.52$157,640.0040,463  
1/16/2019Yakob LiawatidewiSVPSell3,183$22.15$70,503.4537,471  
1/14/2019Yakob LiawatidewiSVPSell8$22.15$177.2037,471  
1/2/2019William J PetersCFOSell3,245$19.52$63,342.4075,550  
12/14/2018Richard K PrinsDirectorSell1,616$20.65$33,370.4033,818  
12/13/2018Jack Y ZhangCEOSell29,689$20.99$623,172.112,115,894  
12/13/2018Physics & Chemistry La AppliedMajor ShareholderSell133,915$21.29$2,851,050.357,398,090  
12/11/2018Jack Y ZhangCEOSell66,757$21.47$1,433,272.792,115,894  
12/11/2018Richard KooDirectorSell29,278$21.32$624,206.9689,263  
12/7/2018Howard LeeDirectorSell29,278$21.67$634,454.26133,381  
12/3/2018Jason B. ShandellInsiderSell16,630$22.44$373,177.20  
12/3/2018Rong ZhouEVPSell1,089$22.00$23,958.00  
12/3/2018William J. PetersCFOSell10,000$22.40$224,000.00133,381  
11/30/2018Yakob LiawatidewiSVPSell13,980$21.50$300,570.0048,963  
11/29/2018Richard K PrinsDirectorSell5,000$20.50$102,500.00  
11/28/2018Yakob LiawatidewiSVPSell1,520$20.49$31,144.8037,463  
11/23/2018Yakob LiawatidewiSVPSell1,299$20.26$26,317.7437,463  
11/14/2018Jason B ShandellInsiderSell16,015$20.41$326,866.15183,890  
11/14/2018Richard K PrinsDirectorSell5,000$20.23$101,150.0040,434  
11/12/2018William J PetersCFOSell38,484$20.74$798,158.16106,636  
11/9/2018Jason B ShandellGeneral CounselSell16,095$20.99$337,834.05204,805  
11/9/2018Rong ZhouEVPSell2,173$20.50$44,546.5054,392  
11/9/2018William J PetersCFOSell10,000$21.47$214,700.00106,636  
11/9/2018Yakob LiawatidewiSVPSell17,808$20.97$373,433.7646,763  
8/16/2018William J PetersCFOSell2,407$17.59$42,339.1386,836  
8/14/2018Richard K PrinsDirectorSell10,000$17.82$178,200.00  
7/11/2018Jason B. ShandellInsiderSell14,399$16.77$241,471.23  
7/9/2018William J. PetersCFOSell3,250$16.46$53,495.00  
6/12/2018Michael A ZasloffDirectorSell15,000$16.52$247,800.0029,845  
5/15/2018Jack Y ZhangCEOBuy25,000$16.08$402,000.002,065,619  
3/20/2018Jason B ShandellInsiderSell20,000$19.43$388,600.00251,372  
3/15/2018Richard K PrinsDirectorSell16,598$19.90$330,300.2045,442  
3/14/2018Jason B ShandellInsiderSell700$20.45$14,315.00  
3/13/2018William J PetersCFOSell19,801$20.10$398,000.10  
1/26/2018Jason B. ShandellInsiderSell18,627$19.42$361,736.34  
1/25/2018Jason B. ShandellGeneral CounselSell8,661$19.26$166,810.86  
12/19/2017Diane G GerstEVPSell523$19.48$10,188.0430,164  
12/14/2017Stephen B ShohetDirectorSell7,866$18.87$148,431.4231,982  
12/12/2017Diane G GerstEVPSell523$18.96$9,916.0830,687  
12/7/2017Stephen B ShohetDirectorSell7,862$18.34$144,189.0831,978  
12/1/2017William J. PetersCFOSell6,226$19.67$122,465.42  
11/30/2017Stephen B ShohetDirectorSell7,862$19.25$151,343.5031,978  
11/28/2017Diane G GerstEVPSell523$18.15$9,492.4531,210  
11/22/2017Stephen B ShohetDirectorSell7,862$18.94$148,906.2831,978  
11/21/2017Diane G GerstEVPSell523$18.81$9,837.6331,733  
11/16/2017Stephen B ShohetDirectorSell7,862$18.04$141,830.4831,978  
11/15/2017Diane G GerstEVPSell523$17.77$9,293.7132,256  
11/9/2017Stephen B ShohetDirectorSell7,862$18.55$145,840.1031,978  
11/7/2017Diane G GerstEVPSell523$17.93$9,377.3932,779  
11/2/2017Stephen B ShohetDirectorSell7,862$18.37$144,424.94  
10/26/2017Stephen B ShohetDirectorSell7,862$18.39$144,582.1831,978  
10/24/2017Diane G GerstEVPSell523$18.29$9,565.6733,302  
10/19/2017Stephen B ShohetDirectorSell7,862$18.34$144,189.0831,978  
10/17/2017Diane G GerstEVPSell523$18.48$9,665.0433,825  
10/13/2017William J PetersCFOSell3,026$18.56$56,162.56  
10/12/2017Stephen B ShohetDirectorSell7,862$18.73$147,255.26  
10/5/2017Diane G GerstEVPSell8,444$18.87$159,338.28  
10/4/2017Floyd F PetersenDirectorSell39,312$18.59$730,810.08  
10/2/2017Michael A ZasloffDirectorSell63,624$18.18$1,156,684.32101,879  
8/15/2017Richard K PrinsDirectorSell10,000$14.81$148,100.0033,844  
8/14/2017Richard K PrinsDirectorSell5,000$14.80$74,000.0033,844  
6/9/2017Richard K PrinsDirectorSell10,000$17.07$170,700.0028,844  
6/1/2017Michael A ZasloffDirectorSell15,000$17.01$255,150.0047,411  
5/31/2017Jason B ShandellDirectorSell11,482$16.92$194,275.44241,342  
5/11/2017Richard K PrinsDirectorSell7,500$15.43$115,725.0030,500  
1/3/2017Floyd F PetersenDirectorSell400$18.61$7,444.0058,717  
12/15/2016Diane G GerstEVPSell2,940$20.51$60,299.4026,195  
12/5/2016Rong ZhouEVPSell61$20.70$1,262.7036,991  
12/1/2016Floyd F PetersenDirectorSell400$20.26$8,104.0059,117  
11/28/2016Jason B ShandellInsiderSell26,335$20.48$539,340.80205,004  
11/15/2016Howard LeeDirectorSell37,994$20.65$784,576.10134,527  
10/3/2016Floyd F PetersenDirectorSell400$18.75$7,500.0059,917  
9/26/2016Jason B ShandellInsiderSell56,996$19.50$1,111,422.00259,957  
9/20/2016Jack Y ZhangCEOSell444,199$21.03$9,341,504.971,295,685  
9/8/2016Floyd F PetersenDirectorSell3,000$19.05$57,150.0060,317  
9/1/2016Howard LeeDirectorSell10,381$18.78$194,955.18125  
8/22/2016Jason B ShandellGeneral CounselSell10,000$19.95$199,500.00212,961  
8/19/2016Diane G GerstEVPSell24,046$19.28$463,606.8839,031  
8/18/2016Richard K PrinsDirectorSell3,086$19.62$60,547.3226,000  
8/17/2016Jason B ShandellInsiderSell5,987$18.86$112,914.82202,961  
8/16/2016Stephen B ShohetDirectorSell48,375$18.24$882,360.0028,653  
8/15/2016Michael A ZasloffDirectorSell48,375$18.15$878,006.2542,792  
8/12/2016William J PetersCFOSell1,027$18.19$18,681.1363,625  
8/11/2016Jason B ShandellPresidentSell5,636$18.01$101,504.36208,948  
8/11/2016Richard K PrinsDirectorSell13,993$18.03$252,293.7931,681  
7/18/2016William J PetersCFOSell2,297$17.76$40,794.7264,652  
6/15/2016Rong ZhouEVPSell1,551$15.85$24,583.3537,137  
6/13/2016Richard K PrinsDirectorSell7,500$15.94$119,550.0029,086  
6/9/2016Jason B ShandellPresidentSell9,904$16.43$162,722.72216,610  
6/2/2016William J PetersCFOSell2,297$16.00$36,752.0066,949  
5/25/2016Jason B ShandellPresidentSell1,074$15.60$16,754.40226,514  
5/18/2016Diane G GerstEVPSell1,427$13.97$19,935.1928,649  
5/17/2016Richard K PrinsDirectorSell3,200$13.56$43,392.0023,000  
4/19/2016Diane G GerstEVPSell21,244$12.89$273,835.1639,713  
4/18/2016Diane G GerstEVPSell15,637$12.83$200,622.7139,713  
3/17/2016Richard K PrinsDirectorSell2,400$11.25$27,000.0026,200  
12/17/2015Stephen B. ShohetDirectorSell30,770$14.19$436,626.3012,186  
12/16/2015Howard LeeDirectorSell38,462$14.34$551,545.08109,901  
12/16/2015Rong ZhouEVPSell772$14.29$11,031.8825,460  
12/11/2015Jack Y ZhangCEOSell63,300$14.25$902,025.00920,117  
12/8/2015Jack Y ZhangCEOSell68,117$14.71$1,002,001.07920,117  
12/3/2015Jack Y ZhangCEOSell38,583$15.45$596,107.35920,117  
8/18/2015Richard K PrinsDirectorSell9,100$14.66$133,406.00  
8/17/2015Richard K. PrinsDirectorSell5,400$14.70$79,380.0035,722  
7/17/2015Michael A ZasloffDirectorSell7,692$17.41$133,917.72  
6/17/2015Rong ZhouEVPSell1,000$16.48$16,480.00  
6/15/2015Jack Y ZhangCEOSell45,382$16.29$739,272.78  
6/12/2015Jack Y ZhangCEOSell160,495$16.23$2,604,833.85  
6/9/2015Jack Y ZhangCEOSell193,758$16.43$3,183,443.94  
5/22/2015Richard K PrinsDirectorSell29,452$14.77$435,006.04  
5/19/2015Richard K PrinsDirectorSell3,000$14.94$44,820.00  
4/9/2015Marilyn J PurchaseVPSell28,000$15.79$442,120.00  
4/8/2015Diane G GerstSVPSell10,000$15.79$157,900.00  
8/25/2014Howard LeeDirectorBuy6,000$10.84$65,040.00  
8/19/2014Michael A ZasloffDirectorBuy3,500$10.00$35,000.00  
8/18/2014Richard K PrinsDirectorBuy4,000$10.02$40,080.00  
8/15/2014Floyd F PetersenDirectorBuy3,200$10.35$33,120.00  
(Data available from 1/1/2013 forward)












Amphastar Pharmaceuticals (NASDAQ:AMPH) Insider Trade Frequently Asked Questions

Who is on Amphastar Pharmaceuticals's Insider Roster?

The list of insiders at Amphastar Pharmaceuticals includes David Maris, Floyd F Petersen, Howard Lee, Jack Y Zhang, Jason B Shandell, Michael A Zasloff, Physics & Chemistry La Applied, Richard K Prins, Richard Koo, Rong Zhou, William J Peters, and Yakob Liawatidewi.Learn more on AMPH's insiders

What percentage of Amphastar Pharmaceuticals stock is owned by insiders?

28.40% of Amphastar Pharmaceuticals stock is owned by insiders. Learn more on AMPH's insider holdings

Which Amphastar Pharmaceuticals insiders have been buying company stock?

The following insider purchased Amphastar Pharmaceuticals stock in the last 24 months: David Maris ($20,260.00).

How much insider buying is happening at Amphastar Pharmaceuticals?

Insiders have purchased a total of 1,000 Amphastar Pharmaceuticals shares in the last 24 months for a total of $20,260.00 bought.

Which Amphastar Pharmaceuticals insiders have been selling company stock?

The following insiders have sold Amphastar Pharmaceuticals stock in the last 24 months: Floyd F Petersen ($292,553.14), Howard Lee ($525,122.26), Jack Y Zhang ($2,899,856.66), Jason B Shandell ($1,052,893.04), Michael A Zasloff ($956,470.18), Richard K Prins ($620,710.30), Richard Koo ($1,366,621.32), Rong Zhou ($820,859.16), William J Peters ($675,519.58), and Yakob Liawatidewi ($1,419,157.00).

How much insider selling is happening at Amphastar Pharmaceuticals?

Insiders have sold a total of 579,879 Amphastar Pharmaceuticals shares in the last 24 months for a total of $11,131,535.59 sold.

This page was last updated on 12/5/2021 by MarketBeat.com Staff

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