Suzanne Kozlovsky - 01 Jun 2026 Form 4 Insider Report for BEL FUSE INC /NJ (BELFB)

Reporting relationship: Global Head of People
Issuer ticker: BELFB
Reported as of: 01 Jun 2026
Net transaction value: -$198,165
SEC form: 4
Accepted by SEC: 03 Jun 2026, 15:11:15 UTC
Prior SEC filing: 17 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Lynn Hutkin, as attorney-in-fact for Suzanne Kozlovsky

Key filing fact

Suzanne Kozlovsky filed Form 4 for BEL FUSE INC /NJ (BELFB) on 03 Jun 2026.

Key facts

This page summarizes Suzanne Kozlovsky's Form 4 filing for BEL FUSE INC /NJ (BELFB).
6 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 03 Jun 2026, 15:11.

Change

Previous filing in this sequence was filed on 17 Mar 2026.
Current net transaction value: -$198,165.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001955919 Primary reporting owner

Kozlovsky Suzanne

Relationship: Global Head of People
Address: C/O BEL FUSE INC., 300 EXECUTIVE DRIVE, SUITE 300, WEST ORANGE
Signature: /s/ Lynn Hutkin, as attorney-in-fact for Suzanne Kozlovsky
Signature date: 03 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

BELFB transaction

Class B Common Stock

Sale

Transaction value: $8,810
Shares: -33
Change %: -0.27%
Price: $266.98
Shares after: 12,250
Date: 01 Jun 2026
Ownership: Direct

BELFB transaction

Class B Common Stock

Sale

Transaction value: $24,811
Shares: -92
Change %: -0.75%
Price: $269.68
Shares after: 12,158
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F2

BELFB transaction

Class B Common Stock

Sale

Transaction value: $83,858
Shares: -310
Change %: -2.5%
Price: $270.51
Shares after: 11,848
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F3

BELFB transaction

Class B Common Stock

Sale

Transaction value: $12,492
Shares: -46
Change %: -0.39%
Price: $271.56
Shares after: 11,802
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F4

BELFB transaction

Class B Common Stock

Sale

Transaction value: $58,298
Shares: -214
Change %: -1.8%
Price: $272.42
Shares after: 11,588
Date: 01 Jun 2026
Ownership: Direct
Footnotes: F5

BELFB transaction

Class B Common Stock

Sale

Transaction value: $9,897
Shares: -36
Change %: -0.31%
Price: $274.91
Shares after: 11,552
Date: 01 Jun 2026
Ownership: Direct

BELFB holding

Class A Common Stock

No transaction description listed

Transaction value
Shares
Change %
Price
Shares after: 492
Date: 01 Jun 2026
Ownership: by 401(k) plan
Footnotes: F1

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

The number of shares held in the 401(k) plan is estimated.

Footnote F2

This price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $268.95 to $269.95, inclusive. The reporting person undertakes to provide to Bel Fuse Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (2) to this Form 4.

Footnote F3

This price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $270.01 to $270.89, inclusive. The reporting person undertakes to provide to Bel Fuse Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (3) to this Form 4.

Footnote F4

This price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $271.09 to $271.72, inclusive. The reporting person undertakes to provide to Bel Fuse Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (4) to this Form 4.

Footnote F5

This price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $272.335 to $272.78, inclusive. The reporting person undertakes to provide to Bel Fuse Inc. (the "Company"), any security holder of the Company, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in footnote (5) to this Form 4.