Round Rock Advisors LLC

Position in TUSK — Mammoth Energy Services, Inc.

CIK 1846991 WILTON, CT

Position in TUSK

as of Jun 30, 2026 · filed Aug 12, 2026 Compact

Position Value

$496,733

New position

Shares Held

152,841

first reported quarter

Ownership

0.318%

of shares outstanding

% of Portfolio

0.13%

of 13F equity value

Holder Rank

#19

of 94 holders

Holding Since

Jun 2026

1 quarter on record

Voting authority Sole 99% Shared 0% None 1%

Industrials · as of Jun 30, 2026

Round Rock Advisors LLC holds $2,286,363 across 3 Conglomerates names. TUSK ranks #3 (21.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	HON	Honeywell International Inc	4,480	$1,003,072
2	MMM	3M Co	4,858	$786,558
3	TUSK	Mammoth Energy Services, Inc. This page	152,841	$496,733

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$496,733	152,841	—	Shares	Sole	2026-08-12
No filing history on record for this holder in this stock.