Aratana Therapeutics Inc (NASDAQ:PETX) CEO Peter Steven St sold 75,000 shares of the business's stock in a transaction that occurred on Friday, September 21st. The shares were sold at an average price of $6.06, for a total value of $454,500.00. Following the completion of the sale, the chief executive officer now owns 574,233 shares of the company's stock, valued at $3,479,851.98. The sale was disclosed in a legal filing with the Securities & Exchange Commission, which is available at the SEC website.