Millennial Media Inc. announced the official launch of operations in the Japanese market. John Greiner has been named Managing Director of Japan, and will lead the company's operations out of the newly opened Tokyo office. As the Managing Director of Japan, John Greiner will lead all operations in Japan and will be responsible for building relationships with developers and publishers, and working with premium brands and agencies to help them execute effective mobile advertising campaigns. Greiner was most recently the President of MonkeyPaw Games, and brings over 18 years of experience in the Japanese market. With the opening of the Japanese office, Millennial Media now has international offices in London, Singapore, Tokyo, Paris, Hamburg and Jakarta.

Millennial Media Inc. announced unaudited consolidated earnings results for the first quarter ended March 31, 2013. For the quarter, the company reported revenue increased to $49.4 million from $32.9 million for the first quarter of 2012, a year over year increase of 50.1%. Net loss, on a GAAP basis, was $3.8 million or $0.05 per basic and diluted common share, compared to net loss of $4.0 million or $0.32 per basic and diluted common share for the first quarter of 2012. Adjusted LBITDA, a non-GAAP financial measure, was $0.8 million compared to adjusted LBITDA of $2.4 million for the first quarter of 2012. Loss from operations was $3.7 million against $3.0 million a year ago. Loss before income taxes was $3.7 million against $4.0 million a year ago. Non-GAAP net loss per common share was $0.01 against $0.15 a year ago. The company provided earnings guidance for the second quarter and full year of 2013. Based on information available, the company expects total revenue for the second quarter of 2013 to be in the range of $58 million to $60 million and adjusted EBITDA to be between a loss of $0.5 million and $1.5 million in the second quarter. For the full year 2013, the company reiterates its previous guidance that it expects revenue to be in the range of $270 million to $280 million and adjusted EBITDA to be between $17.0 million and $18.0 million.

On April 29, 2013, Arun Gupta, a member of the Board of Directors of Millennial Media Inc., advised the company of his intent to resign from the Board of Directors effective upon the conclusion of the company's 2013 Annual Meeting of Stockholders to be held on June 11, 2013.