ROYCE & ASSOCIATES LP

Position in ARQ — Arq, Inc.

CIK 906304 New York, NY

Position in ARQ

as of Mar 31, 2026 · filed May 12, 2026 Compact

Position Value

$4,476,016

-$293,095 QoQ

Shares Held

1,748,444

+19.9% QoQ

Ownership

4.07%

of shares outstanding

% of Portfolio

0.04%

of 13F equity value

Holder Rank

of 95 holders

Holding Since

Mar 2020

5 quarters on record

Voting authority Sole 100.ToString("F0")% Shared 0.ToString("F0")% None 0.ToString("F0")%

Industrials · as of Mar 31, 2026

ROYCE & ASSOCIATES LP holds $58,659,198 across 3 Pollution & Treatment Controls names. ARQ ranks #3 (7.6% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CECO	Ceco Environmental Corp	827,781	$49,319,191
2	ERII	Energy Recovery, Inc.	483,018	$4,863,991
3	ARQ	Arq, Inc. This page	1,748,444	$4,476,016

5 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$4,476,016	1,748,444	+19.9%	Shares	Sole	2026-05-12
2025-12-31	$4,769,111	1,458,444	+6.2%	Shares	Sole	2026-02-09
2025-09-30	$9,833,859	1,373,444	+168.8%	Shares	Sole	2025-11-12
2025-06-30	$2,743,635	510,919	+12152.3%	Shares	Sole	2025-08-11
2020-03-31	$27,396	4,170	—	Shares	Sole	2020-05-12
No filing history on record for this holder in this stock.