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.