1) American College of Obstetricians and Gynecologists

2) BlueCross BlueShield of Texas, A Div. of Health Care Service Corp., a Mutual Legal Reserve Company

3) CenterPoint Energy, Inc.

4) Experian

5) HCA Healthcare

6) Luminant Generation Company LLC

7) PepsiCo, Inc

8) Republic National Distributing Company

9) Texas Association of Obstetricians & Gynecologists

10) Texas Wildlife Association

11) The Real Estate Council of San Antonio, Inc

12) TXU Energy Retail Company LLC

13) Union Pacific Railroad

14) Vistra Corp

15) Vistra Corporate Services Company