1) ACT INC.

2) APEX CLEAN ENERGY HOLDINGS, LLC

3) AUTOMATIC DATA PROCESSING, INC.

4) CHRISTUS HEALTH

5) CIOX HEALTH, LLC

6) CITY OF FORT WORTH, TEXAS

7) CITY OF MCALLEN

8) ENTERTAINMENT SOFTWARE ASSOCIATION

9) GULFSTREAM AEROSPACE

10) K12, INC.

11) KALEO, INC.

12) MCGUIREWOODS CONSULTING, LLC

13) MEDICAL TRANSPORTATION MANAGEMENT, INC.

14) ST. LUKE'S HEALTH SYSTEM CORPORATION

15) THE CORPORATION FOR TEXAS REGIONALISM

16) THE NORTH HIGHLAND COMPANY

17) VIA METROPOLITAN TRANSIT

18) WALGREEN CO.