Shares of artificial intelligence company C3.ai (NYSE: AI) slipped a modest 2.8% through 3:03 p.m. ET on Wednesday.

You can thank the company's own executives and directors for this.

As TheFly.com pointed out last night, C3 Board of Directors member Richard Levin sold 12,000 shares of C3 stock on July 7, collecting $504,000 on the sale -- but that's not the only reason this sale might worry investors.  

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Source Fool.com