Check out which companies are making headlines after the bell Thursday:
Zynga and Facebook - Facebook will no longer be prohibited from developing its own games, starting March 31, 2013, per new agreements with Zynga. Facebook shares edged higher, while Zynga tumbled in extended-hours trading. (Click here for after-hours quotes.)
(Read More: Stocks End Higher Amid Ongoing 'Cliff' Talks )
Yum Brands - The parent company of KFC and Pizza Hut confirmed its full-year 2012 EPS guidance of at least $3.24 a share against expectations for $3.28 a share. In addition, the company said it sees 2013 earnings growth of at least 10 percent. (Click here for after-hours quote.)
Zumiez - he apparel store posted earnings of 40 cents a share on revenue of $180 million, missing expectations for 47 cents a share on revenue of $182 million. In addition, the company handed in current quarter earnings and sales guidance that were lower than forecasts, sending shares sharply lower in extended-hours trading. (Click here for after-hours quote.)
Ulta Salon - The beautystore chain posted earnings of 59 cents a share on revenue of $506 million, edging past expectations for 56 cents a share on sales of $504 million. In addition, the company handed in current-quarter guidance that were better than estimates and said it will open about 125 new stores next year. Shares edged higher in extended-hours trading. (Click here for after-hours quote.)
Splunk - he software company posted a loss of a penny a share, excluding one-time items, on revenue of $52 million. Analysts expected the company to post a loss of 2 cents a share on revenue of $47 million. In addition, the company handed in full-year 2013 revenue guidance that edged past expectations, sending shares higher in extended-hours trading. (Click here for after-hours quote.)
Tellabs - The telecommunications company named Daniel Kelly as its new CEO and president and announced a special dividend of $1 a share. (Click here for after-hours quote.)
St. Jude Medical - The global medical device company authorized a $1 billion share buyback program, sending shares higher in extended-hours trading. (Click here for after-hours quote.)
Questcor - The pharmaceuticals company was initiated with a "neutral" rating and a price target of $28 a share at Mizuho Securities. (Click here for after-hours quote.)
Hanesbrand - The maker of underwear and socks raised its 2013 earnings outlook to above expectations, sending shares higher in extended-hours trading. (Click here for after-hours quote.)
National Beverage - The beverage manufacturer declared a special dividend of $2.55 a share. The company initially announced its intention to declare a special dividend last week. Shares climbed in extended-hours trading. (Click here for after-hours quote.)
Regal Entertainment Group - The movie theater chain declared a special dividend of $1 a share on its A and B shares. Shares edged higher in extended-hours trading (Click here for after-hours quote.)
Avago Tech - The semiconductor company posted earnings of 77 cents a share, ex-items, on revenue of $618 million, beating projections for 67 cents a share on sales of $615 million. Still, the company said it sees current quarter revenue down between 5 and 9 percent sequentially, sending shares lower in extended-hours trading. (Click here for after-hours quote.)
(Read More: CNBC's Market Insider Blog )
—By CNBC's JeeYeon Park (Follow JeeYeon on Twitter: @JeeYeonParkCNBC)
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