ZIOPHARM Oncology, Inc. Attn: Patricia Craven 1180 Avenue of the Americas Suite 1920 New York, NY 10036 646 214 0700 Main 646 214 0711 Fax For directions to ZIOPHARM headquarters, please Click here.

Operations ZIOPHARM Oncology, Inc. 1 First Avenue Parris Building, #34 Navy Yard Plaza Boston, MA 02129 617 259 1970 Main 617 241 2855 Fax For directions to ZIOPHARM Operations & Business Development, please Click here. Business Development and Partnership inquiries should be directed to: bizdev@ziopharm.com or contact us online. Investor Relations/Public Relations inquiries should be directed to: ir@ziopharm.com or contact us online.