Check out which companies are making headlines after the bell Wednesday:
H&R Block - The tax preparation provider
Vivint Solar - The alternative energy provider beat analysts' forecasts for a fourth-quarter loss of 37 cents a share by a penny, while revenue came in at $6.86 million, versus expectations of $6 million. The stock rose more than 5 percent in after-hours trading.
Encana - The Canada-based energy producer announced a $1 billion common stock offering, sending the stock down some 3 percent in extended trading.
Johnson & Johnson - Shares rose slightly on a report that the pharmaceuticals maker was close to acquiring cancer drugmaker Pharmacyclics, in a deal that values the company at a premium. Pharmacyclics shares rose more than 2 percent after the report surfaced.
General Dynamics - Shares edged higher after the aerospace and defense firm announced that it would increase its quarterly dividend by 11 percent to 69 cents a share.