After-Hours Buzz: YHOO Chairman Fred Amoroso Resigns ... AMZN, JCP & More
Check out which companies are making headlines after the bell Thursday:

Yahoo - The Internet company announced that Fred Amoroso has resigned as Chairman. In addition, the company said that Amoroso has decided not to see reelection to the board of directors at the upcoming 2013 annual meeting of shareholders. Maynard Webb, Jr. will serve as interim Chairman of the company. Shares were largely unchanged in extended-hours trading.

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Amazon.com - The online retailer posted earnings of 18 cents a share, exceeding expectations by a dime a share, while revenue was slightly below estimates at $16.07 billion versus estimates for $16.15 billion. Meanwhile, the company handed in current-quarter revenue guidance that was in the lower end of expectations. Shares slumped in extended-hours trading.

Starbucks - The coffeehouse giant posted earnings 48 cents a share, in line with expectations, while revenue fell slightly short of estimates at $3.56 billion against forecasts for $3.59 billion. In addition, the company handed in a weaker-than-expected current-quarter and fourth-quarter earnings guidance, sending shares lower in extended-hours trading.

JCPenney - Investor George Soros reported a 7.9 percent passive stake in the retailer, according to a SEC filing. Shares spiked in extended-hours trading.