31 buyers · 2 sellers · 0% of sales under a 10b5-1 plan
Congress, 1 year
5 bought · 2 sold
Latest: purchase, 2026-10-09
TSMC insider trades (Form 4)
Form 4 buys and sells (codes P and S). Grants, option exercises
and conversions excluded.
Over the last 180 days, TAIWAN SEMICONDUCTOR MANUFACTURING CO LTD insiders sold a net $11.7M of stock across 251 Form 4 purchases and sales, with 31 insiders buying. Source: SEC Form 4 filings, as of 2026-10-27.
Foreign private issuer: most of its insiders are exempt from SEC Form 4, but some still file it; those filings are listed below, and the record may be incomplete.
7 earlier Form 4 trades (code P or S) here by this insider (6 buys, 1 sale), the last on Sep 7, 2026.
+7.1% median (+8.6% mean) 90-day return after 4 previous buys.
The trade is 97.9% of the 47 shares held after it.
29 other insiders bought within 30 days.
1,913 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: VP Chuang Tzu-Sou bought about $3.7K of TSM on Oct 7, 2026; 29 other insiders bought within 30 days and 1,913 funds added in the latest 13F quarter.
6 earlier Form 4 trades (code P or S) here by this insider (6 buys), the last on Sep 7, 2026.
+7.1% median (+8.6% mean) 90-day return after 4 previous buys.
The trade is 0.7% of the 6,824 shares held after it.
29 other insiders bought within 30 days.
1,913 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: VP Cao Min bought about $4.0K of TSM on Oct 7, 2026; 29 other insiders bought within 30 days and 1,913 funds added in the latest 13F quarter.
6 earlier Form 4 trades (code P or S) here by this insider (6 buys), the last on Sep 7, 2026.
+7.1% median (+8.6% mean) 90-day return after 4 previous buys.
The trade is 0.8% of the 8,573 shares held after it.
29 other insiders bought within 30 days.
1,913 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: EVP and Co-COO Chin Yung-Pei bought about $5.3K of TSM on Oct 7, 2026; 29 other insiders bought within 30 days and 1,913 funds added in the latest 13F quarter.
6 earlier Form 4 trades (code P or S) here by this insider (6 buys), the last on Sep 7, 2026.
+7.1% median (+8.6% mean) 90-day return after 4 previous buys.
The trade is 98.1% of the 52 shares held after it.
29 other insiders bought within 30 days.
1,913 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: SVP Chang Tzonz-Sheng bought about $4.0K of TSM on Oct 7, 2026; 29 other insiders bought within 30 days and 1,913 funds added in the latest 13F quarter.
7 earlier Form 4 trades (code P or S) here by this insider (7 buys), the last on Sep 7, 2026.
+5.1% median (+7.9% mean) 90-day return after 5 previous buys.
The trade is 0.8% of the 6,761 shares held after it.
29 other insiders bought within 30 days.
1,913 funds added in the 13F quarter to Jun 30, 2026.
Insider activity: SVP and GC Fang Shu-Hua bought about $4.2K of TSM on Oct 7, 2026; 29 other insiders bought within 30 days and 1,913 funds added in the latest 13F quarter.
251 transactions on record
Since filing: total return from the first close after the filing to the latest close, dividend-adjusted. Not a forecast.
Context lines are counts over the filings above and returns from our own price history, never a price level. Not investment advice.
Nobody has filed for crossing 5%. That is a fact, not missing data.
TSM planned insider sales (Form 144)
No planned-sale notices
No insider has filed to sell. Watch this after a run-up.
TSM mutual fund holders (N-PORT)
Funds ranked by the share of their own portfolio in this stock (N-PORT).
Upright Growth Fund
$8.1M position · as of 2026-06-30
24.4%
PROFUND VP EMERGING MARKETS
$7.1M position · as of 2026-06-30
21.7%
SP Funds S&P World (ex-US) ETF
$40.0M position · as of 2026-07-31
20.0%
Sophus Capital Emerging Market ETF
$10.2M position · as of 2026-06-30
16.7%
National Security Emerging Markets Index ETF
$6.7M position · as of 2026-05-31
15.9%
ULTRAEMERGING MARKETS PROFUND
$1.8M position · as of 2026-07-31
15.7%
SEC N-PORT, monthly, about 60 days late · funds ≥ $10M ·
% is the share of the fund's own portfolio
Live price
Daily candles from TradingView, under their licence. No filings marked.
Why this name is on the desk
31 insiders reported buying shares.
The record shows a net $11.7M sold by insiders over 180 days, 1,913 funds added last quarter, 5 House member(s) bought in 12 months, disclosed weeks after the trade. Each figure is a federal filing, dated the day it went public.
TSM ranks highest on institutional and government (96th percentile) and risk and compliance (94th), and lowest on insider conviction (67th), among Semiconductors & Electronics peers.
Insider conviction
67
Inputs
Net Form 4 buying (codes P and S), 180d-$11.7M · 35 pct, sector of 147
Insider buyers, 180d31 · 100 pct, sector of 151
Institutional and government
96
Inputs
Funds adding, latest quarter1,913 · 97 pct, sector of 184
Congress net buyers, 365d3 · 95 pct, sector of 40
Federal contracts, 180dno federal contracts in 180 days
Lobbying spend, 4 quartersno lobbying filings in the last four quarters
Risk and compliance
94
Inputs
Short interest, % of shares outstanding (no float on file)+0.1% · 94 pct, sector of 221
Recalls per $1B revenue, 3yrevenue under $50M or not filed, so a count cannot be scaled to size
EPA cases per $1B revenue, 5yrevenue under $50M or not filed, so a count cannot be scaled to size
New text in Risk Factors, latest 10-Kneeds two 10-Ks with a Risk Factors section (not 20-F filers or stubs)
4 not measured: Profitability, Financial health, Growth, US patents
Profitability needs 2 of 4 inputs, 0 present: fewer than four consecutive quarters of net income; fewer than four consecutive quarters of operating income
Financial health needs 1 of 2 inputs, 0 present: no debt line filed
Growth needs 1 of 2 inputs, 0 present: no backlog line filed, or no year-earlier backlog; no revenue for this year and the year before
US patents needs 1 of 2 inputs, 0 present: patent data not loaded yet
3 of 7 axes scored. Each is a percentile against sector peers (all companies when the sector is thin); higher is better. An unscored axis is unmeasured, not low. How it is scored
TSM filings, in plain words
Are Taiwan Semiconductor Manufacturing insiders buying or selling TSM?
In the 180 days to 2026-10-27, Taiwan Semiconductor Manufacturing insiders were net sellers, a net $11.7M: $2.2M of purchases and $14.0M of sales reported on Form 4, by 31 buyers and 2 sellers.
Have members of Congress traded TSM?
Yes. In the year to 2026-10-27, 5 House members disclosed buying TSM and 2 House members disclosed selling it; the latest on record is a purchase by Cleo Fields dated 2026-10-09.
Read the full summary
In the 180 days to 2026-10-27, Taiwan Semiconductor Manufacturing insiders were net sellers of TSM, a net $11.7M across purchases and sales reported on Form 4 by 31 buyers and 2 sellers. 30 different insiders reported purchases within the last 90 days, a cluster buy, which is rarer than a single purchase. In the year to 2026-10-27, 5 members of Congress disclosed buying TSM and 2 members disclosed selling it; the latest on record is a purchase by Cleo Fields dated 2026-10-09. Each figure is counted from SEC and House filings as of 2026-10-27, dated the day the filing was made public.
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