UPDATE 1-Sierra Wireless reports quarterly net loss

* Q4 loss per share of $0.09 vs year-ago EPS of $1.12

* Adjusted EPS $0.09; analysts were expecting $0.18

* Revenue up 8.3 percent at $144 million (In U.S. dollars unless noted)

TORONTO, Feb 10 (Reuters) - Mobile modem maker Sierra Wireless Inc (SW.TO) (SWIR.O) reported a quarterly net loss on Wednesday, hurt by higher marketing expenses and research and development costs.

Sierra, which makes the AirCard line of wireless modems, said it lost a net $2.7 million, or 9 cents a share, in its fourth quarter. That was down from a profit of $34.7 million, or $1.12 a share, a year earlier, when its results included $18.4 million in unrealized foreign exchange gains as well as a $6.5 million tax benefit.

Adjusted to exclude special items such as restructuring costs, stock-based compensation expenses and tax adjustments, Sierra said it earned 9 cents a share.

Analysts, on average, had expected the company to report adjusted earnings of 18 cents a share on revenue of $144.6 million, according to Thomson Reuters I/B/E/S.

Revenue came in at $144 million, up 8.3 percent from $133 million a year earlier.

Sierra said its sales and marketing expenses rose to $14.6 million from $8.2 million a year ago. R&D costs increased to $20.2 million from $13.2 million.

For the current, first quarter, Sierra forecast revenue of $150 million and adjusted earnings of 11 cents a share.

Sierra reported its results after markets closed. Its shares closed down 10 Canadian cents at C$12.47 on the Toronto Stock Exchange on Wednesday. ($1=$1.06 Canadian) (Reporting by John McCrank; editing by Peter Galloway)