After-Hours Buzz: HPQ, FFIV, AAP & More

Check out which companies are making headlines after the bell Thursday:

Hewlett-Packard - The tech giant announced that Ray Lane will step down from his post as the company's chairman. Lane has come under fire from shareholders for his role in the acquisition of British software company Autonomy. Director Ralph Whitworth will become the company's interim chairman. Shares edged lower in extended-hours trading.

(Read More: Stocks End Higher, but Techs Weigh; BBY Soars)

F5 Networks - The network appliances company slashed its second-quarter outlook, sending shares sharply lower in extended-hours trading.

Advance Auto Parts - The automotive replacement parts retailer named George Sherman as its new president. Most recently, Sherman served as the senior vice president at Best Buy Services.

Hanesbrand - The clothing company said it expects to post first-quarter earnings of between 48 cents a share and 51 cents a share on revenue of $945 million, against current estimates for 32 cents a share on sales of $974 million. Meanwhile, the company backed its 2013 guidance, which was largely in line with Wall Street forecasts. In addition, the company's board initiated a regular dividend of 20 cents a share. Shares edged higher in extended-hours trading.

WD-40 - The maker of the water-displacing spray posted earnings of 66 cents a share, topping expectations for 56 cents a share, while revenue was in line with estimates at $87 million. Shares rose in extended-hours trading.

UBS initiated coverage of health insurers Aetna, Cigna and UnitedHealth with a "buy" rating, while started coverage of Humana and WellPoint with a "neutral" recommendation.

Workday - Jefferies initiated coverage of the software company with a "buy" rating and a price target of $76. Shares were unchanged in extended-hours trading.

—By CNBC's JeeYeon Park (Follow JeeYeon on Twitter: @JeeYeonParkCNBC)

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