9 Meters Biopharma, Inc.

Abraxas Petroleum Corporation

Acasti Pharma, Inc.

Acorda Therapeutics, Inc.

Adamis Pharmaceuticals Corporation

Advaxis, Inc.

Aeterna Zentaris Inc.

AIkido Pharma Inc.

AirNet Technology Inc.

Alberton Acquisition Corporation

ALJ Regional Holdings, Inc.

AnPac Bio-Medical Science Co., Ltd.

Apex Global Brands Inc.

Aqua Metals, Inc.

Aspen Technology, Inc.

Assertio Holdings, Inc.

Astrotech Corporation

Auris Medical Holding Ltd.

Avinger, Inc.

AzurRx BioPharma, Inc.

BIO-key International, Inc.

Biolase, Inc.

Bionano Genomics, Inc.

Brickell Biotech, Inc.

Castor Maritime Inc.

Celsion Corporation

Centennial Resource Development, Inc.

CF Finance Acquisition Corp.

Charles & Colvard Ltd.

Check-Cap Ltd.

CHF Solutions, Inc.

China HGS Real Estate, Inc.

China Jo-Jo Drugstores, Inc.

China SXT Pharmaceuticals, Inc.

China Xiangtai Food Co., Ltd.

Cinedigm Corp

ClearSign Technologies Corporation

Color Star Technology Co. Ltd.

Conformis, Inc.

Datasea Inc.

Destination XL Group, Inc.

Diffusion Pharmaceuticals Inc.

Dolphin Entertainment, Inc.

Dynatronics Corporation

Eastside Distilling, Inc.

ENDRA Life Sciences Inc.

Energy Focus, Inc.

ENGlobal Corporation

Exela Technologies, Inc.

EyePoint Pharmaceuticals, Inc.

Farmmi, INC.

Ferroglobe PLC

Fuel Tech, Inc.

Globus Maritime Limited

Guardion Health Sciences, Inc.

Gulfport Energy Corporation

Hallador Energy Company

Hancock Jaffe Laboratories, Inc.

Helius Medical Technologies, Inc.

HTG Molecular Diagnostics, Inc.

Hudson Capital Inc.

Iconix Brand Group, Inc.

iFresh Inc.

IMAC Holdings, Inc.

Insignia Systems, Inc.

Intec Pharma Ltd.

Interpace Biosciences, Inc.

Iterum Therapeutics plc

Jaguar Health, Inc.

JAKKS Pacific, Inc.

Kaixin Auto Holdings

Kaspien Holdings Inc.

KBL Merger Corp. IV

Lianluo Smart Limited

LM Funding America, Inc.

Longevity Acquisition Corporation

Luokung Technology Corp

Miragen Therapeutics, Inc.

Moleculin Biotech, Inc.

Nabriva Therapeutics plc

Naked Brand Group Limited

NanoVibronix, Inc.

National Holdings Corporation

NCS Multistage Holdings, Inc.

Neos Therapeutics, Inc.

Novan, Inc.

NV5 Global, Inc.

NXT-ID Inc.

Obalon Therapeutics, Inc.

Ocugen, Inc.

Onconova Therapeutics, Inc.

OptiNose, Inc.

Orbital Energy Group, Inc.

Outlook Therapeutics, Inc.

Pareteum Corporation

Performance Shipping Inc.

PLx Pharma Inc.

Predictive Oncology Inc.

Principal Exchange-Traded Funds

Profire Energy, Inc.

Pyxis Tankers Inc.

Rave Restaurant Group, Inc.

Regulus Therapeutics Inc.

ReTo Eco-Solutions, Inc.

RiceBran Technologies

Salarius Pharmaceuticals, Inc.

Schmitt Industries, Inc.

SCWorx Corp.

Seanergy Maritime Holdings Corp

Second Sight Medical Products, Inc.

Seneca Biopharma, Inc.

Senmiao Technology Limited

Sino-Global Shipping America, Ltd.

Sonim Technologies, Inc.

SPAR Group, Inc.

Sphere 3D Corp.

Staffing 360 Solutions, Inc.

Steel Connect, Inc.

Sundial Growers Inc.

SuperCom, Ltd.

Teligent, Inc.

Tellurian Inc.

The Dixie Group, Inc.

The OLB Group, Inc.

The Peck Company Holdings, Inc.

The RealReal, Inc.

The9 Limited

Titan Medical Inc.

Titan Pharmaceuticals, Inc.

Tonix Pharmaceuticals Holding Corp.

Torchlight Energy Resources, Inc.

Tottenham Acquisition I Limited

ToughBuilt Industries, Inc.

TransGlobe Energy Corporation

U.S. Well Services, Inc.

Verra Mobility Corporation

Vertex Energy, Inc

VistaGen Therapeutics, Inc.

Viveve Medical, Inc.

Xcel Brands, Inc

Yatra Online, Inc.

Youngevity International, Inc.