After-hours buzz: Amgen, Crocs, Twitter & more

Scott Mlyn | CNBC

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

Amgen - The biotechnology company reported earnings per share of $2.30, excluding items, on $5.03 billion in revenue versus expectations of an EPS of $2.11 on sales of about $4.96 billion. Its shares gained in after-hours trading.

Buffalo Wild Wings - The operator of franchise restaurants climbed in after-hours trading after reporting third-quarter earnings that beat expectations.

Crocs - The maker of casual footwear declined after reporting results for the third quarter, which included disappointing revenue guidance for the fourth quarter.

Kohl's - The department-store operator said it expects comparable sales to decrease 1.4 percent in the third quarter. Its shares declined in after-hours trading.

Regal Entertainment Group - The movie-theater operator jumped in after-hours trading after it tallied third-quarter results and said it would explore strategic alternatives, including a sale.

Twitter - The social-media company reported third-quarter earnings per share of 1 cent on $361 million in revenue, compared to expectations of EPS of 1 cent on $351 million in sales. Its share dropped sharply in after-hours trading.

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