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) Martin Water Midstream LLC

10) Messer Americas

11) NGL Energy Partners LP

12) Permico Royalties LLC

13) Standard Lithium Ltd.

14) Targa Resources

15) Texas Independent Producers and Royalty Owners Association TIPRO

16) Waste Management Energy Services TX

17) Williams Companies