LITTELFUSE INC /DE — Director's Dealing 2026

Feb 4, 2026

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: LITTELFUSE INC /DE (LFUS)
CIK: 0000889331
Period of Report: 2026-02-02

Reporting Person: Kim Peter Sung-Jip (SVP & GM Industrial Business)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2026-02-02	Common Stock	M	5488	$166.63	Acquired	15663	Direct
2026-02-02	Common Stock	S	82	$328.14	Disposed	15581	Direct
2026-02-02	Common Stock	S	1519	$327.39	Disposed	14062	Direct
2026-02-02	Common Stock	S	1787	$326.44	Disposed	12275	Direct
2026-02-02	Common Stock	S	2100	$325.44	Disposed	10175	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2026-02-02	Stock Option (right to buy)	$166.63	M	5488	Disposed	2027-07-10	Common Stock (5488)	Direct

Footnotes

F1: The shares were sold in multiple transactions at prices ranging from $328.03 to $328.40, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate
price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F2: The shares were sold in multiple transactions at prices ranging from $327.00 to $327.97, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate
price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F3: The shares were sold in multiple transactions at prices ranging from $326.01 to $326.98, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate
price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F4: The shares were sold in multiple transactions at prices ranging from $325.00 to $325.99, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate
price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

F5: The option for 5,488 shares vests in increments of one third annually beginning on the first anniversary of the July 10, 2020 date of grant.