Yammer is a tool for making companies and organizations more productive through the exchange of short frequent answers to one simple question: “What are you working on?”

As employees answer that question, a feed is created in one central location enabling co-workers to discuss ideas, post news, ask questions, and share links and other information. Yammer also serves as a company directory in which every employee has a profile and as a knowledge base where past conversations can be easily accessed and referenced.

Anyone in a company can start their Yammer network and begin inviting colleagues. The privacy of each network is ensured by limiting access to those with a valid company email address. Information is never shared with third parties.

The basic Yammer service is free. Companies can pay to claim and administer their networks.


Date Type Amount Investors Valuation
12/01/08 Series A 0.05M TechCrunch50 2008 Conference Unknown
01/01/09 Series A 5M Founders Fund, Charles River Ventures Unknown
02/01/10 Series B 10M Emergence Capital Partners, SV Angel, Charles River Ventures, Goldcrest Investment Unknown
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Adam Pisoni (CTO)

Travis VanderZanden (Director, Account Management)

David Sacks (Board member)

Steve Apfelberg (Board member)

View more details about all 10 people at Yammer


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