Ursula M. Burns, listed as an insider at Taiwan Semiconductor Manufacturing Co Ltd (TSMWF), bought 1,000 shares in the open market on March 31, 2026 at $322.05 per share, a purchase worth about $322,050. Open-market buys matter because they involve an insider using personal funds to buy shares at the current market price, which investors often watch as a sign the insider is willing to increase exposure on the same terms as other shareholders. The significance also depends on the insider’s role. While the filing describes Burns simply as an “insider” (often meaning a director, executive, or other reporting person), insider purchases are generally viewed as more informative than sales because insiders can sell for many reasons (taxes, diversification), whereas buying is usually discretionary. This trade also fits a short-term pattern of insider accumulation at TSMWF. In the two days prior, VP Lin Shyue-Shyh bought roughly $111,260 on March 29 and $164,160 on March 30. Three purchases over three consecutive days suggests coordinated interest or shared conviction among company insiders, and it’s notable that these were all buys rather than mixed buying and selling.