U.S. Exchange Stock List

American Electric Technologies, Inc.

Alta Mesa Resources, Inc.

Alta Mesa Resources, Inc.

Andeavor Logistics LP

Aegean Marine Petroleum Network Inc.

Apache Corporation

Anadarko Petroleum Corporation

Antero Resources Corporation

Approach Resources Inc.

Arch Coal, Inc.

Alliance Resource Partners, L.P.

Atlantic Power Corporation

Abraxas Petroleum Corporation

Basic Energy Services, Inc.

BHP Billiton plc

Brunswick Corporation

Bonanza Creek Energy, Inc.

Bloom Energy Corporation

Briggs & Stratton Corporation

Baker Hughes, a GE company

Blueknight Energy Partners L.P., L.L.C.

Blueknight Energy Partners L.P., L.L.C.

Ballard Power Systems, Inc.

BP p.l.c.

Buckeye Partners L.P.

BP Midstream Partners LP

BP Prudhoe Bay Royalty Trust

Berry Petroleum Corporation

Black Stone Minerals, L.P.

Baytex Energy Corp

Peabody Energy Corporation

BWX Technologies, Inc.

Bellatrix Exploration Ltd

CrossAmerica Partners LP

CSI Compressco LP

CONSOL Coal Resources LP

Centennial Resource Development, Inc.

CNX Resources Corporation

Cypress Energy Partners, L.P.

CNOOC Limited

C

Core Laboratories N.V.

Cloud Peak Energy Inc

Calumet Specialty Products Partners, L.P.

Continental Resources, Inc.

Cummins Inc.

Canadian Natural Resources Limited

CONSOL Energy Inc.

Cabot Oil & Gas Corporation

ConocoPhillips

Callon Petroleum Company

Crescent Point Energy Corporation

Capstone Turbine Corporation

California Resources Corporation

Comstock Resources, Inc.

Cross Timbers Royalty Trust

Carrizo Oil & Gas, Inc.

Cenovus Energy Inc

CVR Energy Inc.

CVR Refining, LP

Chevron Corporation

Concho Resources Inc.

China Yuchai International Limited

Delek US Holdings, Inc.

Delek Logistics Partners, L.P.

Dorchester Minerals, L.P.

NOW Inc.

Denbury Resources Inc.

Diamond Offshore Drilling, Inc.

Dril-Quip, Inc.

Devon Energy Corporation

Dawson Geophysical Company

ENI S.p.A.

GrafTech International Ltd.

Ecopetrol S.A.

Encana Corporation

Eclipse Resources Corporation

ECA Marcellus Trust I

Enbridge Energy, L.P.

Enbridge Energy Management LLC

Energy XXI Gulf Coast, Inc.

Energen Corporation

Vaalco Energy Inc

Emerson Electric Company

Enbridge Inc

Enbridge Inc

EOG Resources, Inc.

EP Energy Corporation

Equinor ASA

EQT Corporation

Enerplus Corporation

Eco-Stim Energy Solutions, Inc.

Earthstone Energy, Inc.

ENSCO plc

Energy Transfer Partners, L.P.

Diamondback Energy, Inc.

Foresight Energy LP

Forum Energy Technologies, Inc.

Frank's International N.V.

Falcon Minerals Corporation

Falcon Minerals Corporation

Keane Group, Inc.

TechnipFMC plc

FTS International, Inc.

General Electric Company

Genesis Energy, L.P.

Global Partners LP

Gulfport Energy Corporation

Geopark Ltd

Halliburton Company

Warrior Met Coal, Inc.

Holly Energy Partners, L.P.

Hess Corporation

Hess Midstream Partners LP

HollyFrontier Corporation

Halcon Resources Corporation

Helix Energy Solutions Group, Inc.

Hallador Energy Company

Hollysys Automation Technologies, Ltd.

Helmerich & Payne, Inc.

HighPoint Resources Corporation

Chaparral Energy, Inc.

Chesapeake Energy Corporation

Chesapeake Granite Wash Trust

Independence Contract Drilling, Inc.

World Fuel Services Corporation

Ion Geophysical Corporation

Ideal Power Inc.

Isramco, Inc.

Jagged Peak Energy Inc.

Jones Energy, Inc.

Kayne Anderson Acquisition Corp.

Kayne Anderson Acquisition Corp.

Kayne Anderson Acquisition Corp.

Key Energy Services, Inc.

KLX Energy Services Holdings, Inc.

Kosmos Energy Ltd.

Kimbell Royalty Partners

Liberty Oilfield Services Inc.

Legacy Reserves LP

Lilis Energy, Inc.

Lonestar Resources US Inc.

Laredo Petroleum, Inc.

Marine Petroleum Trust

Mid-Con Energy Partners, LP

Ramaco Resources, Inc.

MGE Energy Inc.

Magnolia Oil & Gas Corporation

Macquarie Infrastructure Company

Martin Midstream Partners L.P.

Magellan Midstream Partners L.P.

Matlin & Partners Acquisition Corporation

Matlin & Partners Acquisition Corporation

Matlin & Partners Acquisition Corporation

Marathon Petroleum Corporation

MPLX LP

MIDSTATES PETROLEUM COMPANY, INC.

Marathon Oil Corporation

Matador Resources Company

Mesa Royalty Trust

Murphy Oil Corporation

MV Oil Trust

Noble Energy Inc.

Noble Midstream Partners LP

Nabors Industries Ltd.

NCS Multistage Holdings, Inc.

Noble Corporation

National Energy Services Reunited Corp.

National Energy Services Reunited Corp.

Newfield Exploration Company

NGL ENERGY PARTNERS LP

Natural Gas Services Group, Inc.

Nine Energy Service, Inc.

North American Energy Partners, Inc.

National Oilwell Varco, Inc.

Newpark Resources, Inc.

Natural Resource Partners LP

North European Oil Royality Trust

Nustar Energy L.P.

Oasis Petroleum Inc.

Obsidian Energy Ltd.

Oceaneering International, Inc.

Oil States International, Inc.

Oasis Midstream Partners LP

Ocean Rig UDW Inc.

Occidental Petroleum Corporation

Plains All American Pipeline, L.P.

Plains Group Holdings, L.P.

Par Pacific Holdings, Inc.

Pembina Pipeline Corp.

PBF Energy Inc.

PBF Logistics LP

Petroleo Brasileiro S.A.- Petrobras

Permian Basin Royalty Trust

PDC Energy, Inc.

Precision Drilling Corporation

Parsley Energy, Inc.

SandRidge Permian Trust

Pioneer Energy Services Corp.

Profire Energy, Inc.

Koninklijke Philips N.V.

Panhandle Royalty Company

Parker Drilling Company

Plug Power, Inc.

PrimeEnergy Corporation

PermRock Royalty Trust

Phillips 66

Phillips 66 Partners LP

Patterson-UTI Energy, Inc.

PetroChina Company Limited

ProPetro Holding Corp.

Penn Virginia Corporation

Permianville Royalty Trust

Pioneer Natural Resources Company

QEP Resources, Inc.

Quintana Energy Services Inc.

Recon Technology, Ltd.

Rowan Companies plc

Resolute Energy Corporation

RPC, Inc.

Transocean Ltd.

Ranger Energy Services, Inc.

Rosehill Resources Inc.

Rosehill Resources Inc.

Rosehill Resources Inc.

Pacific Coast Oil Trust

Range Resources Corporation

SAExploration Holdings, Inc.

SilverBow Resorces, Inc.

Sabine Royalty Trust

SandRidge Energy, Inc.

Seadrill Partners LLC

SandRidge Mississippian Trust II

Seadrill Limited

SandRidge Mississippian Trust I

Semgroup Corporation

Shell Midstream Partners, L.P.

San Juan Basin Royalty Trust

Schlumberger N.V.

SM Energy Company

Sanchez Energy Corporation

Sundance Energy Australia Limited

China Petroleum & Chemical Corporation

Solaris Oilfield Infrastructure, Inc.

Superior Energy Services, Inc.

Sprague Resources LP

Sasol Ltd.

Suncor Energy Inc.

Sunoco LP

Southwestern Energy Company

Talos Energy, Inc.

Tellurian Inc.

Transglobe Energy Corp

Thermon Group Holdings, Inc.

TransMontaigne Partners L.P.

Total S.A.

TPI Composites, Inc.

Texas Pacific Land Trust

Trecora Resources

Torchlight Energy Resources, Inc.

Tetra Technologies, Inc.

Mammoth Energy Services, Inc.

Unit Corporation

Ultra Petroleum Corp.

U.S. Energy Corp.

Vermilion Energy Inc.

Valero Energy Corporation

Valero Energy Partners LP

Viper Energy Partners LP

VOC Energy Trust

Vertex Energy, Inc

Weatherford International plc

Cactus, Inc.

Whiting Petroleum Corporation

Westmoreland Resource Partners, LP

Westport Fuel Systems Inc

WPX Energy, Inc.

WildHorse Resource Development Corporation

W&T Offshore, Inc.

Select Energy Services, Inc.

Woodward, Inc.

Cimarex Energy Co

Extraction Oil & Gas, Inc.

Exxon Mobil Corporation

YPF Sociedad Anonima

Zion Oil & Gas Inc

Zion Oil & Gas Inc