First Solar - The solar panel maker posted a quarterly loss, hurt by restructuring charges and weaker prices for its thin-film solar equipment. In addition, the company appointed James Hughes as its new CEO.(Click here for after-hours quotes.)

Dolby - The audio tech company posted earnings of 91 cents a share, excluding one-time items, on revenue of $260 million, topping expectations for 75 cents a share on sales of $254 million. Shares surged in extended-hours trading. (Click here for after-hours quotes.)

JC Penney - The retailer named Ken Hannah its new CFO following the departure of Michael Dastugue last month. Hannah was the president at MEMC Electronic Materials. (Click here for after-hour quotes.)

Red Hat - The software company was initiated with an "outperform" rating at BMO Capital. (Click here for after-hours quotes.)

Qiagen - The biotech company announced it will acquire privately-owned AmniSure International, but financial terms of the deal were not disclosed.(Click here for after-hours quotes.)

Follow JeeYeon Park on Twitter: @JeeYeonParkCNBC

Questions? Comments? Email us at marketinsider@cnbc.com

AIG News & Analysis

 Here's What the Billionaires Are Buying - 16 May 2013 EDT - CNBC.COM

 Whale Watch: Einhorn Boosts Apple Stake by 83.5% - 15 May 2013 EDT - CNBC.COM

 After-Hours Buzz: CSCO, AAPL, TSLA & More - 15 May 2013 EDT - CNBC.COM

 Bulls Run; Whales Leave Apple; Defending Dimon - 15 May 2013 EDT - CNBC.COM

 AIG 'Going Back to Our Roots': CEO Benmosche - 15 May 2013 EDT - CNBC.COM

 More AIG News