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) Davenport, Dean (Mr.)

7) Deep Blue Midland Basin LLC

8) DG Petro Oil & Gas, LLC

9) Enterprise Products Partners L.P.

10) Layne Water Midstream

11) Martin Water Midstream LLC

12) Messer Americas

13) NGL Energy Partners LP

14) Permico Royalties LLC

15) Standard Lithium Ltd.

16) Targa Resources

17) Texas Independent Producers and Royalty Owners Association TIPRO

18) Waste Management Energy Services TX

19) Williams Companies