1) 3M Company

2) American Airlines, Inc.

3) Anatole Partners III, L.L.C.

4) Arnold Capital Management, LLC

5) Association of Texas Professional Educators (ATPE)

6) AT&T

7) Baylor Scott & White Health

8) BEPCO, L.P.

9) BNSF Railway, a Berkshire Hathaway Corporation

10) Calpine Corporation

11) City of Amarillo

12) City of Austin

13) City of San Antonio

14) Community Associations Institute

15) Credit Union Coalition of Texas

16) Crow Holdings, L.P.

17) Cummins Inc.

18) Entergy Texas, Inc.

19) H-E-B, LP

20) Hilltop Securities Inc.

21) Hillwood Development Company, LLC

22) Holt Texas Ltd. dba HOLTCAT

23) Honey Creek Land Company, LLC

24) Lower Colorado River Authority

25) Motion Picture Association, Inc.

26) Nasdaq, Inc.

27) NetJets Services, Inc.

28) North Texas Tollway Authority

29) Outdoor Advertising Association of Texas, Inc.

30) Penske Truck Leasing Co., L.P.

31) Republic Property Group, Ltd.

32) Texas Beverage Association

33) Texas Instruments Incorporated

34) Texas Mutual Insurance Company

35) Texas State University System

36) The Goldman Sachs Group, Inc.

37) The Nature Conservancy

38) Uber Technologies, Inc.

39) Windward Capital Assets LLC