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Rong Zhou, insider at Amphastar Pharmaceuticals
Rong Zhou Insider Alerts

Get notified the next time Rong Zhou buys or sells Amphastar Pharmaceuticals stock. Enter your email address below to get our daily insider buying and selling report.

Rong Zhou Insider Information

Rong Zhou, M.S., has served as Executive Vice President of Production Center since June 2015, President of Armstrong Pharmaceuticals since March 2014, President of Amphastar Nanjing Pharmaceuticals since April 2021 (both are Amphastar’s subsidiaries), and as our Senior Vice President of Scientific Affairs since August 2012. Mr. Zhou served as Corporate Vice President of Scientific Affairs from October 2001 until his promotion to Senior Vice President. From July 2000 to October 2001, Mr. Zhou was Vice President of Scientific Affairs of International Medication Systems (Amphastar Pharmaceutical’s subsidiary company). From July 1999 to July 2000, Mr. Zhou was Associate Vice President of Scientific Affairs of Amphastar Pharmaceuticals. From November 1998 to July 2000, Mr. Zhou was Director of Validation Department of International Medication Systems. From 1992 to 1998, Mr. Zhou was a Principle Chemist at Gensia (Sicor) Pharmaceutical’s. Mr. Zhou received a B.S. in Chemical Engineering from the Fuzhou University in 1982 and an M.S. from the Youngstown State University in 1992.

What is Rong Zhou's net worth?

The estimated net worth of Rong Zhou is at least $1.80 million as of July 26th, 2021. Mr. Zhou owns 92,244 shares of Amphastar Pharmaceuticals stock worth more than $1,796,913 as of November 30th. This net worth evaluation does not reflect any other investments that Mr. Zhou may own. Learn More.

How do I contact Rong Zhou?

The corporate mailing address for Mr. Zhou and other Amphastar Pharmaceuticals executives is 11570 SIXTH STREET, RANCHO CUCAMONGA CA, 91730. Amphastar Pharmaceuticals can also be reached via phone at (909) 980-9484 and via email at [email protected]

Has Rong Zhou been buying or selling shares of Amphastar Pharmaceuticals?

During the last quarter, Rong Zhou has sold $169,308.00 of Amphastar Pharmaceuticals stock. Most recently, Rong Zhou sold 7,813 shares of the business's stock in a transaction on Thursday, November 11th. The shares were sold at an average price of $21.67, for a transaction totalling $169,307.71.

Who are Amphastar Pharmaceuticals' active insiders?

Amphastar Pharmaceuticals' insider roster includes Richard Koo (Director), Howard Lee (Director), Yakob Liawatidewi (EVP), William Peters (CFO), Floyd Petersen (Director), Richard Prins (Director), Michael Zasloff (Director), and Rong Zhou (EVP).

Are insiders buying or selling shares of Amphastar Pharmaceuticals?

In the last year, insiders at the sold shares 25 times. They sold a total of 353,440 shares worth more than $6,814,080.55. The most recent insider tranaction occured on November, 22nd when Director Richard K Prins sold 5,000 shares worth more than $106,100.00. Insiders at Amphastar Pharmaceuticals own 28.4 % of the company.

Information on this page was last updated on 11/22/2021.

Rong Zhou Insider Trading History at Amphastar Pharmaceuticals

Transaction DateBuy/SellNumber of SharesAverage Share PriceTotal TransactionShares Held After TransactionDetails
11/11/2021Sell7,813$21.67$169,307.71View SEC Filing Icon  
7/26/2021Sell6,000$20.87$125,220.0092,244View SEC Filing Icon  
7/20/2021Sell5,187$20.57$106,696.59View SEC Filing Icon  
6/8/2021Sell8,180$19.34$158,201.20View SEC Filing Icon  
5/13/2021Sell700$19.58$13,706.0096,965View SEC Filing Icon  
6/3/2020Sell13,163$18.82$247,727.66View SEC Filing Icon  
5/6/2019Sell9,600$22.76$218,496.0066,707View SEC Filing Icon  
3/1/2019Sell3,200$25.00$80,000.0055,230View SEC Filing Icon  
2/5/2019Sell4,289$23.00$98,647.0056,319View SEC Filing Icon  
12/3/2018Sell1,089$22.00$23,958.00View SEC Filing Icon  
11/9/2018Sell2,173$20.50$44,546.5054,392View SEC Filing Icon  
12/5/2016Sell61$20.70$1,262.7036,991View SEC Filing Icon  
6/15/2016Sell1,551$15.85$24,583.3537,137View SEC Filing Icon  
12/16/2015Sell772$14.29$11,031.8825,460View SEC Filing Icon  
6/17/2015Sell1,000$16.48$16,480.00View SEC Filing Icon  
See Full Table

Rong Zhou Buying and Selling Activity at Amphastar Pharmaceuticals

This chart shows Rong Zhou's buying and selling at Amphastar Pharmaceuticals by year and by quarter.

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Amphastar Pharmaceuticals Company Overview

Amphastar Pharmaceuticals logo
Amphastar Pharmaceuticals, Inc. engages in the development, manufacture, market, and sale of technically challenging and proprietary injectable, inhalation, and intranasal products. It operates through Finished Pharmaceutical Products and Active Pharmaceutical Ingredients Products segments. The Finished Pharmaceutical Products segment manufactures, markets, and distributes Primatene Mist, enoxaparin, naloxone, phytonadione, lidocaine, and other critical and non-critical care drugs. The Active Pharmaceutical Ingredients Products segment manufactures and distributes recombinant human insulin and porcine insulin. The company was founded by Zi-Ping Luo and Yong Feng Zhang on February 29, 1996 and is headquartered in Rancho Cucamonga, CA.
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Today's Range

Now: $19.48
Low: $19.21
High: $20.83

50 Day Range

MA: $19.49
Low: $17.83
High: $21.30

2 Week Range

Now: $19.48
Low: $16.91
High: $21.70


251,433 shs

Average Volume

216,115 shs

Market Capitalization

$932.12 million

P/E Ratio


Dividend Yield



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