Chuang Tzu-Sou — SEC Form 4 Insider Trading Activity
Summary
Updated Jul 16, 2026
Chuang Tzu-Sou has filed 5 SEC Form 4 filings across 1 company in the last 90 days — active on both sides. Lifetime open-market purchases: $14K. Lifetime open-market sales: $13.97M.
Profile
Chuang Tzu-Sou is identified in SEC filings as holding the position of Vice President at Taiwan Semiconductor Manufacturing Co Ltd (TSMC) as of the 2026-05-11 filing. Beyond this context, publicly available biographical information is limited. TSMC is a leading global semiconductor manufacturer, and the VP role indicates a senior corporate leadership position within the company. No additional career history, education, or achievements are disclosed in the provided SEC context.
Chuang Tzu-Sou is identified in SEC filings as holding the position of Vice President at Taiwan Semiconductor Manufacturing Co Ltd (TSMC) as of the 2026-05-11 filing. Beyond this context, publicly available biographical information is limited. TSMC is a leading global semiconductor manufacturer, and the VP role indicates a senior corporate leadership position within the company…
How many SEC Form 4 filings has Chuang Tzu-Sou submitted recently?
5 primary Form 4 filings in the last 90 days, covering 1 company.
Has Chuang Tzu-Sou been buying or selling stock?
Recorded transactions: 4 open-market purchases ($14K) and 1 open-market sales ($13.97M) across all tracked filings.
Where can I see all of Chuang Tzu-Sou's SEC filings?
All Form 4 filings, transaction values, and 10b5-1 plan flags are listed on this page and updated in real time as new SEC EDGAR filings are processed.
