Check out which companies are making headlines after the bell Monday:
Sonic - The drive-in restaurant chain posted earnings of 5 cents a share, excluding one-time items, which was in line with expectations. Meanwhile, the firm posted revenue of $111 million, slightly missing estimates for $113 million. But the company said it sees positive same-store sales in the low single-digit range for the full-year. Shares rallied in extended-hours trading.
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Thor Industries - The maker of RVs announced a regular quarterly dividend of 18 cents a share.
Meadwestvaco - The packaging company was downgraded to "neutral" from "buy" at UBS, pushing shares lower in extended-hours trading.
Raven Industries - The plastic, electronic, and "special apparel" products maker increased its quarterly dividend by 14 percent to 12 cents a share from 10.5 cents a share.
Washington Federal - The company increased its quarterly dividend by 12.5 percent to 9 cents a share from 8 cents a share.
Fusion-io - The computer hardware and software company was initiated with a "perform" rating at Oppenheimer.