TripAdvisor, Inc. (NASDAQ:TRIP) shares are falling in the premarket session on Wednesday. The company reported first-quarter adjusted earnings per share of 12 cents, beating the street view of 2 cents.  Quarterly revenues of $395 million marginally beat the analyst consensus of $394.86 million, increasing 6% year over year.  Total Adjusted EBITDA in the quarter under review jumped 42% to $47 million. Brand Tripadvisor sales slumped 2% year over year to $240 million. Adjusted EBITDA margin for Brand Tripadvisor expanded to 33% from 30% in the ...