Driehaus Capital Management LLC

Position in PRLB — Proto Labs Inc

CIK 938206 Chicago, IL

Position in PRLB

as of Jun 30, 2026 · filed Aug 14, 2026 Compact

Position Value

$30,171,008

+$9,122,874 QoQ

Shares Held

370,151

+0.3% QoQ

Ownership

1.55%

of shares outstanding

% of Portfolio

0.18%

of 13F equity value

Holder Rank

#15

of 276 holders

Holding Since

Dec 2025

3 quarters on record

Voting authority Sole 78% Shared 0% None 22%

Industrials · as of Jun 30, 2026

Driehaus Capital Management LLC holds $242,453,266 across 4 Metal Fabrication names. PRLB ranks #4 (12.4% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	CRS	Carpenter Technology Corp	227,203	$140,147,898
2	ATI	Ati Inc	205,124	$40,429,940
3	MEC	Mayville Engineering Company, Inc.	846,354	$31,704,420
4	PRLB	Proto Labs Inc This page	370,151	$30,171,008

3 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$30,171,008	370,151	+0.3%	Shares	Sole	2026-08-14
2026-03-31	$21,048,134	369,136	-3.4%	Shares	Sole	2026-05-15
2025-12-31	$19,333,221	382,155	—	Shares	Sole	2026-02-17
No filing history on record for this holder in this stock.