Other Insiders Active in the Same Stocks
Insiders who reported open-market trades in the last 12 months at the companies Bor-Zen Tien files at. Multiple unrelated insiders buying the same stock within a short window, cluster buying, has historically been one of the strongest Form 4 signals.
- Tzu-Sou Chuang - $13.98M of TSM open-market activity in the last 12 months
- Shyue-Shyh Lin - $655K of TSM open-market activity in the last 12 months
- Lipen Yuan - $344K of TSM open-market activity in the last 12 months
- Ursula M. Burns - $322K of TSM open-market activity in the last 12 months
- Choh Fei Yeap - $76K of TSM open-market activity in the last 12 months
- Che-Chia Wei - $56K of TSM open-market activity in the last 12 months
More Notable Insiders
Other corporate insiders with significant SEC Form 4 track records on InsiderAlpha:
Frequently Asked Questions
Who is Bor-Zen Tien?
Bor-Zen Tien is a corporate insider, tracked as VP of TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM). InsiderAlpha holds 14 primary Form 4 filings for them, the earliest from 2026, updated as new SEC EDGAR filings are processed.
How many SEC Form 4 filings has Bor-Zen Tien submitted recently?
7 primary Form 4 filings in the last 90 days, covering 1 company.
Has Bor-Zen Tien been buying or selling stock?
Recorded transactions: 29 open-market purchases ($829K) and 0 open-market sales across all tracked filings.
How accurate is Bor-Zen Tien's historical track record?
Across 12 tracked purchases, Bor-Zen Tien averaged +11.0% avg 30-day return with a 100% 30-day win rate. InsiderAlpha rates the track record at 5/5 stars.
Where can I see all of Bor-Zen Tien'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.
Learn More
Follow Bor-Zen Tien and every insider like them
A free account opens the full scored daily plan and every past day, a watchlist for any ticker, and 3 months of price history on every company page. No card.
Free plan available · Paid plans start with a 7-day free trial
