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) Texas Association of Obstetricians & Gynecologists

8) Texas Wildlife Association

9) The Real Estate Council of San Antonio, Inc

10) TXU Energy Retail Company LLC

11) Vistra Corp.

12) Vistra Corporate Services Company