Founding History of Yammer

Founded by David Sacks and Adam Pisoni.

Started design and development work in January 2008.

Purchased the yammer.com domain name in August 2008.

Launched in September 2008.

Incorporated as Yammer Inc. in September 2008.

Raised over $140 million in 5 rounds of funding.

Accepted acquisition offer from Microsoft in June 2012.

Headquartered in San Francisco, USA.

The Year 1 is available in a book put together by one of the members of our team. Click on the thumbnail below to find more details about the book.