Insider Transaction Report for Susan E. Siegel

This filing details insider transactions by Susan E. Siegel, a director at ALIGN TECHNOLOGY INC (ALGN), on May 20, 2026. The transactions primarily involve Restricted Stock Units (RSUs). Siegel disposed of 1745 RSUs, which vested on May 20, 2026, as per footnote F1. Concurrently, she acquired 1836 RSUs, which are set to vest on May 20, 2027, or the next annual meeting date, as indicated by footnote F2. Additionally, there was a non-derivative transaction where Siegel acquired 1745 shares of Common Stock. Following these transactions, her post-transaction ownership of Common Stock is 10723 shares. All transactions were reported on Form 4.