Investor Relations Contact Information

(312) 646-2801
ir@eqcre.com

Equity Commonwealth

Two North Riverside Plaza
Suite 2000
Chicago, IL 60606

Transfer Agent and Registrar

For stock certificate questions,
address changes,
dividend payment questions
or registration changes, please contact:

EQ Shareowner Services

1110 Centre Pointe Curve
Suite 101
Mendota Heights, MN 55120-4100
1-855-235-0840
www.shareowneronline.com

Independent Auditors

Ernst & Young LLP
155 North Wacker Drive
Chicago, IL 60606

NYSE Designated Market Maker

GTS
14 Wall Street, 26th Floor
New York, NY 10005, USA