Suzanne Kozlovsky - 15 Mar 2026 Form 4 Insider Report for BEL FUSE INC /NJ (BELFB)

Role: Global Head of People
Signature: /s/ Lynn Hutkin
Issuer symbol: BELFB
Transactions as of: 15 Mar 2026
Net transactions value: -$43,487
Form type: 4
Filing time: 17 Mar 2026, 16:45:56 UTC
Previous filing: 18 Mar 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Kozlovsky Suzanne	Global Head of People	C/O BEL FUSE INC., 300 EXECUTIVE DRIVE, SUITE 300, WEST ORANGE	/s/ Lynn Hutkin	17 Mar 2026	0001955919

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	BELFB	Class B Common Stock	Award		+437	+3.6%	$0.000000^*	12,497	15 Mar 2026	Direct	F2
transaction	BELFB	Class B Common Stock	Sale	$43,487	-214	-1.7%	$203.21	12,283	16 Mar 2026	Direct
holding	BELFB	Class A Common Stock						496	15 Mar 2026	by 401(k) plan	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	The number of shares held in the 401(k) plan is estimated.
F2	Ms. Kozlovsky was granted 437 restricted shares of Class B Common Stock on March 15, 2026. The restricted shares vest as follows: 146 shares vest as of March 15, 2027; 146 shares vest as of March 15, 2028; and 145 shares vest as of March 15, 2029.