Boingo Wireless Inc. shares fell more than 15% in the extended session Wednesday after the company told investors it expected a weaker-than-expected first-quarter. The company reported fourth-quarter net income of $416,000, or 1 cent a share, compared with losses of $1 million, or 2 cents a share, in the year-ago period. Adjusted earnings were TK a share. Revenue rose to $67.8 million from $57 million in the year-ago period. Analysts surveyed by FactSet had estimated losses of 9 cents a share on revenue of $66.2 million. For the first quarter, analysts model net losses of $3 million on revenue of $67.4 million. Boingo said it expects first quarter losses of $9 million. Boingo stock has fallen 18.3% this year, with the S&P 500 index rising 1.8%.