Published: Friday June 15, 2012 MYT 12:50:00 PM
WSJ: Microsoft to buy Yammer for more than US$1 billion
It was not certain when the deal would be completed and formally announced, the Journal said.
San Francisco-based Yammer declined to comment, while Microsoft could not be reached for comment outside regular U.S. business hours.
Yammer, which began in 2008 and provides enterprise social networking services, has raised more than $142 million in venture capital funding.