Chuang Tzu-Sou
VP
Chuang Tzu-Sou has filed 10 SEC Form 4 filings (11 transaction rows) across 1 company, with disclosures dating back to 2026. 10 of those filings fall inside the rolling window. Most recent filing: Oct 8, 2026.
On the most recent filing, Chuang Tzu-Sou is listed as VP at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD. Inside the rolling window, Chuang Tzu-Sou reported 7 open-market purchases totaling $24K in TSM and 1 open-market sale totaling $14.0M in TSM. The largest disclosed transaction in the window is a sale of 200,000 TSM shares on May 19, 2026, worth $14.0M.
Companies traded
Other insiders at TSM
Insider Buying
$24K
reported purchases (SEC code P)
Insider Selling
$14.0M
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has Chuang Tzu-Sou made?
Chuang Tzu-Sou has filed 10 SEC Form 4 filings (11 transaction rows) across 1 company since 2026.
Which companies does Chuang Tzu-Sou trade?
Chuang Tzu-Sou has filed SEC Form 4 disclosures for 1 company, including TSM.
When was Chuang Tzu-Sou's most recent SEC Form 4 filing?
Chuang Tzu-Sou's most recent SEC Form 4 filing on Tracefour is dated Oct 8, 2026.
What is Chuang Tzu-Sou's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Chuang Tzu-Sou is listed as VP.
What is Chuang Tzu-Sou's total buy and sell value in the current window?
Inside the rolling retention window, Chuang Tzu-Sou bought $24K and sold $14.0M based on SEC Form 4 filings.
What was Chuang Tzu-Sou's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 200,000 TSM shares on 2026-05-19, worth $14.0M, per SEC Form 4 filings.