Zhou Rong
SENIOR EVP, PRODUCTION CENTER
Zhou Rong has filed 6 SEC Form 4 filings (8 transaction rows) across 1 company, with disclosures dating back to 2025. 6 of those filings fall inside the rolling window. Most recent filing: Sep 3, 2026.
On the most recent filing, Zhou Rong is listed as SENIOR EVP, PRODUCTION CENTER at Amphastar Pharmaceuticals, Inc. Inside the rolling window, Zhou Rong reported no open-market purchases and 2 open-market sales totaling $332K in AMPH. The largest disclosed transaction in the window is a sale of 9,787 AMPH shares on Dec 17, 2025, worth $256K.
Companies traded
Other insiders at AMPH
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$332K
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has Zhou Rong made?
Zhou Rong has filed 6 SEC Form 4 filings (8 transaction rows) across 1 company since 2025.
Which companies does Zhou Rong trade?
Zhou Rong has filed SEC Form 4 disclosures for 1 company, including AMPH.
When was Zhou Rong's most recent SEC Form 4 filing?
Zhou Rong's most recent SEC Form 4 filing on Tracefour is dated Sep 3, 2026.
What is Zhou Rong's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Zhou Rong is listed as SENIOR EVP, PRODUCTION CENTER.
What is Zhou Rong's total buy and sell value in the current window?
Inside the rolling retention window, Zhou Rong bought $0 and sold $332K based on SEC Form 4 filings.
What was Zhou Rong's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 9,787 AMPH shares on 2025-12-17, worth $256K, per SEC Form 4 filings.