Driehaus Capital Management LLC

Position in ECVT — Ecovyst Inc.

CIK 938206 Chicago, IL

Position in ECVT

as of Mar 31, 2026 · filed May 15, 2026 Compact

Position Value

$17,439,844

New position

Shares Held

1,356,131

first reported quarter

Ownership

1.24%

of shares outstanding

% of Portfolio

0.13%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2026

1 quarter on record

Voting authority Sole 77.33301576322641.ToString("F0")% Shared 0.ToString("F0")% None 22.666984236773587.ToString("F0")%

Basic Materials · as of Mar 31, 2026

Driehaus Capital Management LLC holds $105,969,876 across 4 Specialty Chemicals names. ECVT ranks #3 (16.5% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	SQM	Chemical & Mining Co Of Chile Inc	866,592	$70,141,956
2	ALB	Albemarle Corp	97,671	$17,534,874
3	ECVT	Ecovyst Inc. This page	1,356,131	$17,439,844
4	LIN	Linde PLC	1,721	$853,202

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$17,439,844	1,356,131	—	Shares	Sole	2026-05-15
No filing history on record for this holder in this stock.