Scott Mlyn | CNBC
Check out which companies are making headlines after the bell Monday:
Mattress Firm Holding -The mattress retailer gained in after-hours trading after reporting solid third-quarter sales.
Shoe Carnival - The retailer jumped in after-hours trading after posting a profitable third quarter.
Spansion - The maker of flash memory chips surged in after-hours trading after Cypress Semiconductor agreed to buy the company for $1.6 billion in stock.
Thor Industries - The maker of recreational vehicles fell in after-hours trading after reporting mixed quarterly results.
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