After-hours buzz: Hewlett-Packard, Starz, Sirona & more

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

Check out the companies making headlines after the bell Tuesday:

United Natural Foods shares rose about 3 percent after the natural and organic foods distributor reported fourth-quarter and full-year results.

Dental supply and equipment maker Dentsply International said it would acquire Sirona Dental Systems for $5.5 billion. Shares of both companies rose after being halted with Sirona climbing about 3 percent and Dentsply gaining about 1 after the announcement.

Microsoft shares were up modestly after the tech giant said it would increase its quarterly dividend by 16 percent to 36 cents a share.

Spinoff Hewlett-Packard Enterprises expects to cut between 25,000 and 30,000 jobs as a part of a cost-saving plan, Hewlett-Packard said in a press release. Shares were down about 1 percent in after-hours trading.

Theater operator AMC Entertainment's shares rose as much as 1 percent in the wake of a Bloomberg report that said it was in talks to buy Starz, a media and entertainment company. Starz was up more than 7 percent after hours.

FedEx will increase its shipping rates for its ground, freight and express services by an average of 4.9 percent, effective Jan. 4, 2016. The stock fell about 1 percent after the bell. It is slated to report quarterly earnings before the bell on Wednesday.