Form 4 MAMMOTH ENERGY SERVICES, For: Dec 12 Filed by: Amron Arthur H
Form 4 MAMMOTH ENERGY SERVICES, For: Nov 22 Filed by: Booker Corey J.
Form 4 MAMMOTH ENERGY SERVICES, For: Nov 20 Filed by: Booker Corey J.
Form 4 MAMMOTH ENERGY SERVICES, For: Nov 13 Filed by: Booker Corey J.
Form SC 13G/A MAMMOTH ENERGY SERVICES, Filed by: VALUEWORKS LLC