WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC

Position in LFUS — Littelfuse Inc /De

CIK 1644956 CHICAGO, IL

Position in LFUS

as of Mar 31, 2026 · filed May 8, 2026 Compact

Position Value

$103,357,526

+$90,164,324 QoQ

Shares Held

304,575

+530.9% QoQ

Ownership

1.20%

of shares outstanding

% of Portfolio

0.34%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2020

8 quarters on record

Voting authority Sole 90.69326110153493.ToString("F0")% Shared 0.ToString("F0")% None 9.306738898465074.ToString("F0")%

Technology · as of Mar 31, 2026

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC holds $428,759,786 across 9 Electronic Components names. LFUS ranks #2 (24.1% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	APH	Amphenol Corp /De/	1,077,434	$136,133,785
2	LFUS	Littelfuse Inc /De This page	304,575	$103,357,526
3	FN	Fabrinet	164,830	$85,962,141
4	OSIS	Osi Systems Inc	171,667	$45,579,305
5	KN	Knowles Corp	1,274,700	$32,734,296
6	SANM	Sanmina Corp	101,655	$13,178,554
7	CLS	Celestica Inc	38,716	$10,905,522
8	FLEX	Flex Ltd.	8,476	$554,838

8 filing rows on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$103,357,526	304,575	+530.9%	Shares	Sole	2026-05-08
2021-09-30	$13,193,202	48,279	+1.2%	Shares	Sole	2021-11-10
2021-06-30	$12,157,304	47,715	-51.7%	Shares	Sole	2021-08-12
2021-03-31	$26,100,492	98,701	+7.9%	Shares	Sole	2021-05-13
2020-12-31	$23,286,874	91,443	-21.2%	Shares	Sole	2021-02-09
2020-09-30	$20,571,085	115,998	+3.4%	Shares	Sole	2020-11-06
2020-06-30	$19,137,178	112,156	-3.8%	Shares	Sole	2020-08-12
2020-03-31	$15,558,239	116,611	—	Shares	Sole	2020-05-08
No filing history on record for this holder in this stock.