Hansen Natural Corp.'s shares fell sharply Friday after company officials told investors Thursday that sales of its energy drinks and juices were weaker in the second half of May.

Sales were up 12 percent in April but were disappointing in the overseas markets last month, Mark Astrachan, an analyst for Stifel Nicolaus, said in a research report. Also, the company may be going through some growing pains instituting the new distribution deal with Coca-Cola Enterprises Inc.

Astrachan also cut his 2009 and 2010 earnings estimates for Hansen. The Corona-based company will issue its next quarterly financial report in August. Hansen closed at $32.6, down $4.19, or 11.46 percent, in Nasdaq trading Friday.

-- Jack Katzanek