1) Apache Corporation

2) Arrington Oil & Gas Operating LLC

3) BlackRock Funds Services Group, LLC

4) CDP II Holdings, LLC

5) Comstock Resources, Inc.

6) Deep Blue Midland Basin LLC

7) DG Petro Oil & Gas, LLC

8) Enterprise Products Partners L.P.

9) Linde Inc

10) Messer Americas

11) NGL Energy Partners LP

12) Permico Royalties LLC

13) SOGC LLC

14) Standard Lithium Ltd.

15) Targa Resources

16) Texas Independent Producers and Royalty Owners Association TIPRO

17) Waste Management Energy Services TX

18) Williams Companies