Name

Jurisdiction of Organization

ProFrac Holdings, LLC

Texas

ProFrac Holdings II, LLC (dba PF Holdings)

Texas

ProFrac Services, LLC

Texas

ProFrac Manufacturing, LLC

Texas

Alpine Silica, LLC

Texas

BEST Pump and Flow, LLC

Texas

FTS International, Inc.

Delaware

EKU Power Drives GmbH

Germany

EKU Power Drives Inc.

Delaware

AG PSC Funding LLC

Delaware

REV Energy Services, LLC

Colorado

REV Energy Holdings, LLC

Colorado

Alpine Monahans, LLC

Delaware

Alpine Monahans II, LLC

Delaware

Monarch Silica, LLC

Texas

Sunny Point Aggregates, LLC

Louisiana

Performance Proppants International, LLC

Louisiana

Performance Proppants, LLC

Texas

Red River Land Holdings, LLC

Louisiana

Performance Royalty, LLC

Louisiana

U.S. Well Services Holdings, LLC

Delaware

USWS Holdings LLC

Delaware

U.S. Well Services, LLC

Delaware

USWS Fleet 10, LLC

Delaware

USWS Fleet 11, LLC

Delaware

Producers Service Holdings LLC

Delaware

Producers Service Company – West LLC

Delaware

Producers Service I, LLC

Delaware

Producers Service Company LLC

Delaware

Alpine Holding, LLC

Delaware

Alpine Holding II, LLC

Delaware

Alpine Real Estate Holdings, LLC

Delaware

Best PFP, LLC

Texas

F3 Fuel, LLC

Texas

IOT-eq, LLC

Texas

PF Manufacturing Holding, LLC

Texas

PF Proppant Holding, LLC

Texas

PF Tech Holding, LLC

Texas

PF Services Holding, LLC

Texas

ProFrac Sub LLC

Delaware

Advanced Measurements, Inc.

Alberta, Canada

Advanced Stimulation Technologies, Inc.

Texas

Alpine Silica Holding, Inc.

Delaware

AMI Canada, ULC

Alberta, Canada

AMI US Holdings, Inc.

Texas

FHE Holdco, LLC

Delaware

FHE Holdco II, LLC

Delaware

FHE USA LLC

Delaware

FHE Middle East Oil and Gas Equipment L.L.C.

Abu Dhabi, UAE

Iron Pressure Control LLC

Delaware

Livewire Power, LLC

Delaware

NRG MANUFACTURING INC

Texas