After-hours buzz: Ralph Lauren, Gap, Barracuda & more

Traders work on the floor of the New York Stock Exchange.
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Traders work on the floor of the New York Stock Exchange.

Check out the companies making headlines after the bell Tuesday:

Ralph Lauren said he will step aside as CEO of his namesake company in November. He will be replaced by Stefan Larsson, the outgoing president of Gap's Old Navy brand. Lauren will remain design chief of the luxury brand. Ralph Lauren shares rose about 4 percent after hours.

Gap named executive vice president of global product Jill Stanton as the interim head of Old Navy. Gap shares were down more than 3 percent after the announcement.

Barracuda Networks' shares plunged 22 percent after the security and storage provider missed sales expectations and reported weak third-quarter guidance.

ComScore rose about 7 percent after it announced a definitive agreement to acquire media analytics firm Rentrak. Rentrak shares surged about 13 percent after the announcement.

Chesapeake Energy said it will cut its workforce by about 15 percent to better reflect the "needs of the business and current oil and natural gas commodity prices." The oil and gas producer said it will incur $55.5 million in one-time charges during the third quarter in connection with the plan. The stock was down marginally after the bell.

Donaldson tumbled as much as 11 percent after the engine products and industrial systems provider said it was investigating reports that revenue for its European Gas Turbine products business may have been misstated in its second-quarter earnings report.

Diamond Foods fell about 6 percent after the packaged goods manufacture reported fourth-quarter earnings.