Office and Staff

GBC Mailing Address

111 South Calvert Street, Suite 1700
Baltimore, MD 21202
Phone: 410-727-2820
Fax: 410-539-5705
Directions to the GBC office.

Executive Staff

Sharon Markley Schreiber
Chief Operating Officer

Communications and Marketing

Mark Guidera
Vice President of Communications and Marketing
Khalil A. Thames
Multimedia Specialist
Liz Byrd
Digital Communications Manager


Rachel Gray
Senior Staff Accountant


Teresa Milio Birge
Director of Policy and Research
Kamau Bridges
Policy Associate

Events and Business Development

Lisa Byrd
Director of Events and Business Development

The Leadership

David Sachs
Executive Director
Sindee Ernst
Jennifer Cathro
Tauren Robinson El Bey
Program Assistant

Administrative Assistant

Tara Harris
Committee Coordinator
Christine Hiles
Membership Coordinator
Jean Marie Andrulonis
Office & Programs Administrator