By CapitalSnitch Research Desk · updated Oct 11, 2026 · data from SEC filings and official Congress disclosures
Over 12 months, Taiwan Semiconductor Manufacturing Co Ltd saw more selling than buying from its insiders — purchases of about $2.8 million against sales of $14 million.
Biggest single buyer: Lin Shyue-Shyh, Officer, with roughly $164,000. Notably, at least one C-suite executive was among the buyers.
1 investment managers listed TSM in their latest 13F filings (Q2 2026); more funds bought than sold. Quarter by quarter: Last full quarter: net buying by insiders. Insiders bought in 3 of the last 7 full quarters. Members of Congress reported 50 trades in TSM over the past two years (12 members).
Are insiders buying or selling TSM stock?
In the last 12 months Taiwan Semiconductor Manufacturing Co Ltd insiders made open-market purchases worth about $2.8 million and sales worth about $14 million. Data comes from SEC Form 4 filings, updated every 30 minutes on CapitalSnitch.
When was the last insider trade in TSM?
The most recent open-market insider trade in TSM was filed on 2026-10-08.
How many institutions own TSM?
1 investment managers reported holding TSM in SEC Form 13F filings for Q2 2026.
Has any member of Congress traded TSM?
Yes. Members of Congress reported 50 trades in TSM over the past two years. The full list is free on CapitalSnitch.
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Public-record data for research and education, not investment advice. Insider sales are often pre-planned (10b5-1).
Congress data: Data derived from public disclosures filed under the Ethics in Government Act and the STOCK Act, republished free for public transparency and news reporting. Disclosures may lag the trade by 45 days or more and show amounts only as ranges. This data may not be used for credit rating, loan underwriting, solicitation of money (political, charitable or other), direct-mail or commercial targeting (5 U.S.C. 13107).