Yammer Inc
Contact Info
New York
1270 Avenue of the Americas, Suite 1100
New York, NY 10020
P: +1 212 224 3300
London
4 Bouverie Street
London EC4Y 8AX
P: +44 207 779 8888
Hong Kong
Unit 2488, 24/F
Lee Garden One,
33 Hysan Avenue
Causeway Bay, Hong Kong
P: +852 2912 8001
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4.27.02 build:2026-09-03 Login