NEW YORK ( TheStreet) -- Shares of Chipotle Mexican Grill ( CMG) were edging up in late trades Thursday after the restaurant operator topped Wall Street's expectations for its first-quarter results. The Denver-based company reported a profit of $62.7 million, or $1.97 a share, on revenue of $640.6 million, up more than 25% from last year. The performance bested the average estimate of analysts polled by Thomson Reuters for earnings of $1.93 a share in the March-ended quarter on revenue of $630.9 million. Same-restaurant sales surged 12.7% in the quarter, helped by increased traffic and higher menu prices. Restaurant-level operating margins increased by 220 basis points from last year to 27.4%, as the higher sales and lower promotional activity offset food cost increases. The stock was last quoted at $433.99, up 0.8%, on volume of roughly 75,000, according to Nasdaq.com. For fiscal 2012, Chipotle said it expects 155-165 new restaurant openings, comparable-restaurant sales growth in the mid-single digits on a percentage basis, food inflation in the mid-single digits, and an effective tax rate of 39%. P/> Check out TheStreet's quote page for Chipotle Mexican Grill for year-to-date share performance, analyst ratings, earnings estimates and much more. Other stocks active in the extended session included Microsoft ( MSFT), rising 2.9% to $31.90 on volume of 3.7 million after the Dow component beat Wall Street's profit view for its fiscal third quarter by more than 5%; Riverbed Technology ( RVBD), whose shares were last quoted at $24.45, down 12.2%, on volume of nearly 1.4 million after the company fell short on the top line with non-GAAP revenue totaling $182.4 million, below Wall Street's consensus view of $186..1 million; Tempur-Pedic International ( TPX), whose stock fell more than 10% in late trades to $75 after the mattress maker forecast earnings of $3.80 to $3.95 a share for fiscal 2012, below the analysts' view for a profit of $3.96 a share; and Extreme Networks ( EXTR), whose stock sank 13% to $3.74 on volume of more than 400,000 after the company said it sees non-GAAP earnings of 4 cents a share for its fiscal third quarter ended April 1 with revenue ranging from $73 million to $73.5 million, below the current average estimate of analysts polled by Thomson Reuters for a profit of 7 cents a share on revenue of $82.4 million. -- Written by Michael Baron in New York. >To contact the writer of this article, click here: Michael Baron.