Chuang Tzu-Sou
CIK 2114030 · VP · last filed 2026-05-19
Chuang Tzu-Sou is a VP who has filed 3 SEC Form 4 insider transactions across 1 company since 2026. The most recent filing shows the insider sold $14.0M of TSM on May 19, 2026. Across all open-market trades the lifetime net is −$14.0M, making them a net seller over the disclosed history. Current disclosed insider exposure totals $1.07B across reported positions.
"Disclosed insider exposure" sums this person's most-recently-reported share counts across each company they're an insider in, multiplied by the current underlying price. It is not net worth — it misses retail holdings, private investments, real estate, index funds, and any company where the person isn't an SEC-reporting insider. For informational purposes only.
$1.07B
1
3
-$13.96M
Holdings By Company
| Symbol | Role | Shares | Price | Disclosed Exposure | Lifetime OM Net | Filings | Latest Filed |
|---|---|---|---|---|---|---|---|
| TSM | VP | 2,502,201 | $427.92 | $1.07B | -$13.96M | 3 | 2026-05-19 |
Recent Filings
3 filings| Filed | Symbol | Action | Net Shares | Net $ | Link |
|---|---|---|---|---|---|
| 2026-05-19 | TSM | Sell (S) | −200,000 | -$13.97M | EDGAR |
| 2026-05-11 | TSM | Buy (P) | +48 | $3.4K | EDGAR |
| 2026-04-13 | TSM | Buy (P) | +58 | $3.4K | EDGAR |