TSM
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD · Technology · Market cap $11.20T(Price slightly stale)
Insiders bought $1.4M net in the last 90 days ·1 seller, 30 buyers· latest Form 4 filed Oct 8, 2026
Insider Buying
$3.1M
reported purchases (SEC code P)
Insider Selling
$14.0M
reported sales (SEC code S)
Unique Insiders
32
in the rolling window
Latest filing
Oct 8, 2026
Yuan Lipen
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) has 252 SEC Form 4 filings (280 transaction rows) in the rolling window, disclosed by 32 distinct insiders. Most recent filing: Oct 8, 2026.
Inside the rolling window, 32 insiders at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD reported 231 open-market purchases totaling $3.1M and 2 open-market sales totaling $14.0M. The most active filer is VP Tien Bor-Zen with 17 filings. Insiders have net sold $11.6M over the trailing 6 months. The most recent open-market filing is a purchase of 40 shares by VP Yuan Lipen, dated Oct 7, 2026, worth $3K.
- Industry:Semiconductors
- CEO:C. C. Wei
- Employees:65,152
- HQ:Hsinchu City, TPE, TW
- IPO:1997-10-09
| Source | |||||||
|---|---|---|---|---|---|---|---|
| VP | Purchase | 40 | $3K | Oct 8 | -5.7% | SEC ↗ | |
| SVP | Purchase | 52 | $4K | Oct 8 | -5.7% | SEC ↗ | |
| SVP and Deputy Co-COO | Purchase | 59 | $5K | Oct 8 | -5.7% | SEC ↗ | |
| VP | Purchase | 50 | $4K | Oct 8 | -5.7% | SEC ↗ | |
| SVP | Purchase | 53 | $4K | Oct 8 | -5.7% | SEC ↗ | |
| Chairman and CEO | Purchase | 144 | $11K | Oct 8 | cluster-5.7% | SEC ↗ | |
| VP | Purchase | 39 | $3K | Oct 8 | -5.7% | SEC ↗ | |
| SVP | Purchase | 52 | $4K | Oct 8 | -5.7% | SEC ↗ | |
| EVP and Co-COO | Purchase | 68 | $5K | Oct 8 | cluster-5.7% | SEC ↗ | |
| VP | Purchase | 47 | $4K | Oct 8 | -5.7% | SEC ↗ | |
| VP | Purchase | 36 | $3K | Oct 8 | — | SEC ↗ | |
| VP | Purchase | 49 | $4K | Oct 8 | — | SEC ↗ | |
| VP | Purchase | 44 | $3K | Oct 8 | — | SEC ↗ | |
| VP and CIO | Purchase | 44 | $3K | Oct 8 | — | SEC ↗ | |
| SVP | Purchase | 51 | $4K | Oct 8 | — | SEC ↗ | |
| VP | Purchase | 46 | $4K | Oct 8 | — | SEC ↗ | |
| VP | Purchase | 39 | $3K | Oct 8 | — | SEC ↗ | |
| SVP and CFO | Purchase | 28 | $2K | Oct 8 | — | SEC ↗ | |
| VP | Purchase | 46 | $4K | Oct 8 | — | SEC ↗ | |
| SVP and Deputy Co-COO | Purchase | 60 | $5K | Oct 8 | — | SEC ↗ | |
| VP | Purchase | 52 | $4K | Oct 8 | — | SEC ↗ | |
| VP | Purchase | 43 | $3K | Oct 8 | — | SEC ↗ | |
| VP | Purchase | 46 | $4K | Oct 8 | — | SEC ↗ | |
| VP | Purchase | 51 | $4K | Oct 8 | — | SEC ↗ | |
| EVP and Co-COO | Purchase | 67 | $5K | Oct 8 | — | SEC ↗ |
Earnings: last 7 quarters
Congress trading TSM 131 all-time
- RRep. Richard W. AllenPurchase$1,001 - $15,0002026-08-12
- DRep. Cleo FieldsPurchase$1,001 - $15,0002026-07-10
- RRep. Michael McCaulPurchase$15,001 - $50,0002026-06-18
- RRep. Michael T. McCaulPurchase$15,001 - $50,0002026-06-18
- RRep. Michael T. McCaulPurchase$15,001 - $50,0002026-06-18
- RRep. Richard W. AllenPurchase$1,001 - $15,0002026-05-08
STOCK Act disclosures are filed up to 45 days after the trade. Amount is a disclosed range, not an exact figure.
Frequently asked questions
How many SEC Form 4 insider filings does TSM have?
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM) has 252 SEC Form 4 filings (280 transaction rows) in the rolling 365-day window, disclosed by 32 distinct insiders. Most recent filing: Oct 8, 2026.
When was the most recent SEC Form 4 filing for TSM?
The most recent Form 4 filing for TSM on Tracefour is dated Oct 8, 2026.
Who is the most active insider at TSM?
The most active SEC Form 4 filer at TSM in the rolling window is VP Tien Bor-Zen, with 17 filings.
What is the net insider flow at TSM over the last 6 months?
Over the trailing 180 days, insiders at TSM have net sold $11.6M based on SEC Form 4 disclosures.
What is the total insider buy and sell value at TSM in the current window?
Inside the rolling window, insiders at TSM bought $3.1M and sold $14.0M based on SEC Form 4 filings.
Can I get alerts for TSM insider trading?
Yes. Tracefour sends a free email when a new SEC Form 4 purchase or sale is filed at TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD (TSM). Alerts are set per company from the page itself, there is no paid tier, and each email links to the original filing on SEC EDGAR.
Related companies
TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD is in the Technology sector.