Zendesk (NYSE:ZEN) Trading Down 5.9% Following Insider Selling

Zendesk, Inc. (NYSE:ZEN) traded down 5.9% during mid-day trading on Thursday following insider selling activity. The company traded as low as $125.07 and last traded at $125.49. 1,552,159 shares were traded during trading, an increase of 14% from the average session volume of 1,361,184 shares. The stock had previously closed at $133.32.