After-Hours Buzz: CSTR, PRGS & More

Check out which companies are making headlines after the bell Thursday:

Coinstar - The movie rental kiosk maker said its CEO Paul Davis will retire at the end of March and will be succeeded by Scott Di Valerio, the company's current CFO. The company also reaffirmed its fourth-quarter and full-year guidance. Shares tumbled in extended-hours trading.

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Progress Software - The software company posted earnings of 42 cents a share, excluding one-time items, topping expectations for 34 cents a share. But revenue fell short of expectations, sending shares lower in extended-hours trading.

Sonic - The fast-food chain posted earnings of 11 cents a share, edging past expectations by a penny a share, on revenue of $126 million, in line with estimates. In addition, the company said it expects full-year 2013 same-store sales growth in the low single-digit range and sees more new franchise openings versus last year, sending shares higher in extended-hours trading.

Endo Health Solutions - The pharmaceutical company reaffirmed its full-year 2012 adjusted earnings to be at or below the low end of the $5 and $5.10 a share range. The company also said it expects to see full-year 2013 earnings of between $4.40 a share and $4.70 a share, ex-items, and revenue of between $2.80 billion and $2.95 billion. Shares declined in extended-hours trading.

Airgas - The distributor of specialty gases acquired industrial gas and welding supply distributors Metroplex Service Welding Supply and Excel Welding & Industrial Supplies. Financial terms of the agreement were not disclosed.

Morgan Stanley upgraded PerkinElmer to "overweight" from "equal weight," sending shares of the environmental health company higher in extended-hours trading. Meanwhile, the brokerage firm downgraded Waters to "equal-weight" from "overweight," sending shares of the laboratory software company lower in extended-hours trading.

(Read More: CNBC's Market Insider Blog )

—By CNBC's JeeYeon Park (Follow JeeYeon on Twitter: @JeeYeonParkCNBC)

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