DOW JONES SUSTAINABILITY UNITED STATES INDEX

Market capitalization-weighted index encompassing US-based firms in the Dow Jones Sustainability North America Index, comprised of the leading 20% of the biggest American, Canadian, and Mexican firms from the Dow Jones Global Index according to their economic and social sustainability. The free-floating index is reviewed quarterly for potential weighting changes, and reconstituted annually upon obtaining the comprehensive sustainability surveys conducted by Zurich-based research company SAM Group.