Yammer Adds $25M For Enterprise Social Networking

Yammer, a San Francisco-based start-up focused on social networking platforms for enterprise customers, has added $25 million in a third round of funding. The latest round brings Yammer’s total financing to $40 million. U.S. Venture Partners led the round, which included participation from previous shareholders Emergence Capital, Charles River Ventures and Founders Fund. U.S. Venture Partners’ Mamoon Hamid will join Yammer’s board.

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