ACK Asset Management LLC

Position in LFUS — Littelfuse Inc /De

CIK 1510940 GREENWICH, CT

Position in LFUS

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

Position Value

$45,812,250

New position

Shares Held

135,000

first reported quarter

Ownership

0.534%

of shares outstanding

% of Portfolio

5.92%

of 13F equity value

Holder Rank

—

not a current holder

Holding Since

Mar 2026

1 quarter on record

Voting authority Sole 100% Shared 0% None 0%

Technology · as of Mar 31, 2026

ACK Asset Management LLC holds $124,685,840 across 3 Electronic Components names. LFUS ranks #2 (36.7% of the industry book) .

#	Ticker	Company	Shares	Value (USD)
1	ROG	Rogers Corp	475,000	$50,981,750
2	LFUS	Littelfuse Inc /De This page	135,000	$45,812,250
3	CTS	Cts Corp	584,000	$27,891,840

1 filing row on record

Report Date	Value (USD)	Shares	Change	Type	Discretion	Filed
2026-03-31	$45,812,250	135,000	—	Shares	Sole	2026-05-15
No filing history on record for this holder in this stock.