Check out which companies are making headlines after the bell Tuesday:
Steelcase - The office furniture provider reported second-quarter adjusted earnings of 27 cents per share on $787 million in revenue, up about 4 percent from a year ago as U.S. sales rebounded. Share were little changed after the announcement.
Bed Bath & Beyond - Shares rallied as much as 8 percent after the home products retailer postedsecond-quarter results that beat projections, helped by a more than 3 percent increase in comparable-store sales.
GrafTech - The electronics producer dropped as much as 18 percent in light volume after it revised its full-year revenue expectations and announced plans to reduce its corporate staff by about 25 percent to cut costs.
Celgene - The drugmaker said the U.S. Food and Drug Administration approved the expanded use of its Otezla drug for treating patients with moderate to severe plaque psoriasis. Shares moved higher after the announcement.
Viacom - Shares fell in extended trading after touching their lowest level in more than a year during the regular session on news that Nomura had slashed its estimate for the entertainment provider. Shares slid nearly 2 percent after the bell.
Starbucks - The coffee-retailer said it plans to buy the remaining 60.5 percent of Starbucks Japan that it does not already own. The company said the move is will help it to accelerate growth in Japan, its second-largest market. Shares were flat after the announcement.
Carmax - The used car dealer's shares were flat after the bell, having ended the regular trading session nearly 10 percent lower on disappointing earnings results.
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