WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Position in MBUU — Malibu Boats, Inc.

CIK 1644956 CHICAGO, IL

Position in MBUU

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

Position Value

$10,313,350

-$2,019,282 QoQ

Shares Held

375,988

-21.0% QoQ

Ownership

1.91%

of shares outstanding

% of Portfolio

0.03%

of 13F equity value

Holder Rank

#13

of 141 holders

Holding Since

Mar 2026

2 quarters on record

Voting authority Sole 62% Shared 0% None 38%

Consumer Cyclical · as of Jun 30, 2026

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $20,269,872 across 3 Recreational Vehicles names. MBUU ranks #1 (50.9% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	MBUU	Malibu Boats, Inc. This page	375,988	$10,313,350
2	WGO	Winnebago Industries Inc	305,530	$9,544,757
3	BC	Brunswick Corp	4,888	$411,765

2 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-06-30	$10,313,350	375,988	-21.0%	Shares	Sole	2026-08-12
2026-03-31	$12,332,632	475,796	—	Shares	Sole	2026-05-08
No filing history on record for this holder in this stock.