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After-hours buzz: H&R Block, Guidewire, Anheuser-Busch & more

Traders work on the floor of the New York Stock Exchange.
Lucas Jackson | Reuters
Traders work on the floor of the New York Stock Exchange.

Check out the companies making headlines after the bell Tuesday:

H&R Block shares jumped about 7 percent after the tax service provider announced a $3.5 billion share repurchasing program and posted a narrower-than-expected loss.

Ambarella, which develops chip processing solutions, reported adjusted earnings of 88 cents a share on $84 million in revenue, beating estimates of 80 cents a share on $82 million in sales. The stock was down about 2 percent after hours.

Amgen shares inched higher after the biotech firm said it would help to develop Novartis' pipeline of Alzheimer's Disease drugs.

Beverage maker Anheuser-Busch InBev indicated that the growth of craft beer has seen a slowdown in recent months, according to analysts attending the company's investor conference in China on Tuesday. The craft beer segment has been a bright spot in the U.S. beer market. Shares were down more than 1 percent in extended trading.

Guidewire Software's shares tumbled 6 percent after it reported fourth-quarter and fiscal 2015 results.