shares of knightscope inc which debuted thursday on nasdaq and closed the day 409 lower are trading higher in the afterhours market at 512 pm et the companys shares were trading 981 higher at 649 each the company said it sold 22 million shares of its class a common stock at 10 each in its initial public offering the stock began trading at 1444 a share and touched as high as 1548 a share before finishing the day at 591 a share