Twilio Inc. (NYSE:TWLO – Get Free Report) shares fell 3.4% during mid-day trading on Friday following insider selling activity. Get Twilio alerts:Specifically, CFO Aidan Viggiano sold 8,363 shares of the business’s stock in a transaction dated Tuesday, September 30th. Following the transaction, the chief financial officer owned 137,653 shares in the company, valued at approximately $13,846,515.27. Following the transaction, the chief executive officer owned 233,305 shares in the company, valued at approximately $23,468,149.95. Twilio Price PerformanceThe stock’s 50-day moving average price is $107.84 and its 200-day moving average price is $108.61.