Insider purchases are often seen as a positive signal for investors, as they indicate that insiders believe the stock is undervalued or has growth potential. In this case, Director Kevin Dallas bought 7,000 shares of Align Technology at an average price of $285.26 per share, amounting to $1,996,800. This purchase has led to a 4.49% increase in the stock price, which is now trading at $295.36. The insider purchase suggests that the stock may continue to rise in the short term.