Mammoth Energy Services Inc. (TUSK)

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Institutional Investors' Holdings

Filing Period:

No.	Name	Shares	Value	% Port
1.	Rhumbline Advisers	24,047	$49,050	0%
2.	Penbrook Management Llc	14,000	$28,560	0.02%
3.	Union Bancaire Privee, Ubp Sa	4,230	$8,925	0%
4.	Nbc Securities, Inc.	56,940	$116	0.01%
5.	Amalgamated Bank	785	$2	0%