The stock fell as much as 25% in after-hours trading, touching its lowest levels since coming public last September.
The online ticketing company said growth in the current quarter will be "offset by migration headwinds" as it integrates its Ticketfly acquisition.
It forecast total net revenue for the period of $80 million to $84 million, well below analyst forecasts of $95 million.
The company posted a loss per share of 17 cents, vs. estimates of 13 cents by analysts surveyed by FactSet.
Revenue in the fourth quarter hit $75.9 million vs. estimates of $73.2 million.
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This article was written by a staff member of TheStreet.