After-Hours Buzz: HLF, ESRX, RVBD & More

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

Herbalife - The nutrition, weight management and skin-care product company posted earnings of $1.27 a share, excluding one-time items, on sales of $1.1 billion. Analysts expected the company to post earnings of $1.06 a share on revenue of $1.12 billion. In addition, the company handed in current-quarter earnings guidance that fell short of expectations. The firm also raised their full-year guidance, but the increase was largely in line with expectations. Shares toggled in and out of positive territory in extended-hours trading.

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Express Scripts - The pharmacy benefit management organization posted earnings of 99 cents a share, excluding one-time items, on revenue of $26.06 billion, surpassing expectations for 97 cents a share on sales of $25.48 billion. Shares rallied in extended-hours trading.

Riverbed Technology - The networking hardware company posted earnings of 23 cents a share on revenue of $253 million, missing expectations for 24 cents a share on sales of $261 million. In addition, the company handed in current-quarter outlook that fell short of expectations. Shares plunged in extended-hours trading.

Hartford Financial - The investment and insurance company posted earnings of 92 cents a share on sales of $9.18 billion. Analysts expected the company to post earnings of 82 cents a share on revenue of $5.37 billion. Still, shares slid in extended-hours trading.

Newmont Mining - The gold miner posted earnings of 71 cents a share on revenue of $2.18 billion, falling short of forecasts for 77 cents a share on sales of $2.25 billion. Shares edged lower in extended-hours in extended-hours trading.

Buffalo Wild Wings - The restaurant chain posted earnings of 87 cents a share, missing expectations for 99 cents a share, while revenue beat estimates by $1 million at $304 million. For the full-year, the company said it sees 17 percent net earnings growth, roughly in line with expectations. Still, shares gained in extended-hours trading.

Hertz Global - The car rental company posted earnings of 21 cents a share on revenue of $2.44 billion, beating expectations for 17 cents a share on sales of $2.39 billion. The company also reiterated its full-year 2013 guidance, which was mostly in line with estimates. Shares slipped in extended-hours trading.

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

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