* Berkshire will not report 1st-quarter results this week
* No new date or reason given for delay
(Corrects headline from "Buffett's Berkshire Hathaway delays Q1 report"; changes "was to have reported" to "typically reports" in second paragraph)
NEW YORK, April 29 Warren Buffett's Berkshire Hathaway (BRKa.N) (BRKb.N) will not report first-quarter earnings on Friday as expected, a spokeswoman said on Wednesday.
The Omaha, Nebraska-based conglomerate typically reports the results ahead of its annual investor meeting this Saturday, which draws thousands of shareholders.
Morningstar analyst Bill Bergman said the delay took him by surprise.
"It is always on the eve of the meeting," he said.
The spokeswoman, Carrie Kizer, said no date had been fixed for the earnings release, and could not give a reason for the delay.
Berkshire's class A shares were 3.7 percent higher at $92,260 in mid-afternoon trade, and class B shares rose 4.6 percent to $3,046. (Reporting by Lilla Zuill, editing by Leslie Gevirtz)