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After-hours buzz: Con-Way, Krispy Kreme, Palo Alto & more

Traders at the New York Mercantile Exchange.
Adam Jeffery | CNBC
Traders at the New York Mercantile Exchange.

Check out the companies making headlines after the bell Wednesday:

Con-Way shares surged 33 percent after competitor XPO Logistics said it would acquire the freight transportation services firm in a $3 billion deal.

Palo Alto Networks jumped about 5 percent after the network-security provider handed in fiscal fourth-quarter results. The company topped estimates by 3 cents with earnings of 28 cents a share. Revenue came in at $284 million, beating projections of $256 million.

Shares of digital storage provider Box rose about 3 percent after it reported better-than-expected second-quarter results. Box reported a loss of 28 cents a share on $73 million in revenue and raised its full-year revenue outlook.

Krispy Kreme Doughnuts' shares tanked nearly 17 percent after the sweets maker reported adjusted second-quarter earnings of 15 cents a share on $127 million in revenue, missing Wall Street's estimates of 19 cents a share on $132 million in sales. The company also issued weak full-year earnings guidance.