Bel Fuse officer reports Class B stock sales and 7,755 shares held

Rhea-AI Filing Summary

Bel Fuse Inc. reported an insider stock sale by its VP of Asia Operations, who is an officer of the company. According to the Form 4, the officer sold 1,936 shares of Class B common stock on 11/17/2025 at a weighted average price of $144.2328 per share, followed by a sale of 564 shares on 11/18/2025 at a weighted average price of $141.9649 per share. After these transactions, the officer beneficially owned 7,755 shares of Bel Fuse Class B common stock, held directly. The prices reflect multiple trades within stated ranges, and detailed breakdowns are available upon request from the company or the SEC staff.

Insider Trade Summary

Net Seller: 2,500 shares ($359,303)

Net Sell 2 txns

Insider Lai Kenneth Koon Keung

Role VP of Asia Operations

Sold 2,500 shs ($359K)

Type	Security	Shares	Price	Value
Sale	Class B Common Stock	564	$141.9649	$80K
Sale	Class B Common Stock	1,936	$144.2328	$279K

Holdings After Transaction: Class B Common Stock — 7,755 shares (Direct)

Footnotes (1)

1. This price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $139.84 to $148.72, 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 (1) to this Form 4. This price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $138.46 to $144.27, 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.

Form 4 Insider Transactions: What Each Field Means →

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Lai Kenneth Koon Keung

(Last) (First) (Middle)

C/O BEL FUSE INC.

300 EXECUTIVE DRIVE, SUITE 300

(Street)

WEST ORANGE NJ 07052

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
BEL FUSE INC /NJ [ BELFB ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	VP of Asia Operations

3. Date of Earliest Transaction (Month/Day/Year)
11/17/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class B Common Stock	11/17/2025		S		1,936	D	$144.2328(1)	8,319	D
Class B Common Stock	11/18/2025		S		564	D	$141.9649(2)	7,755	D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. This price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $139.84 to $148.72, 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 (1) to this Form 4.

2. This price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $138.46 to $144.27, 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.

	/s/ Lloyd Jeglikowski, Attorney-in-Fact	11/19/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What insider transaction did Bel Fuse (BELFA) report in this Form 4?

The filing reports that the VP of Asia Operations, an officer of Bel Fuse Inc., sold shares of the company's Class B common stock in two transactions and now holds shares directly.

How many Bel Fuse Class B shares were sold in this Form 4 for BELFA?

The officer sold a total of 2,500 Class B common shares, consisting of 1,936 shares on 11/17/2025 and 564 shares on 11/18/2025.

What prices were the Bel Fuse (BELFA) shares sold for in the reported transactions?

Shares were sold at weighted average prices of $144.2328 per share on 11/17/2025 and $141.9649 per share on 11/18/2025, each reflecting multiple trades within stated price ranges.

How many Bel Fuse Class B shares does the reporting officer own after these transactions?

Following the reported sales, the officer beneficially owns 7,755 shares of Bel Fuse Class B common stock, held directly.

Who is the reporting person in the Bel Fuse (BELFA) Form 4 and what is their role?

The reporting person is an officer of Bel Fuse Inc. serving as VP of Asia Operations, as disclosed in the Form 4.

Are detailed price breakdowns for the Bel Fuse (BELFA) insider sales available?

Yes. The filing states that the prices reported are weighted averages and that full information on the number of shares sold at each separate price within the reported ranges will be provided upon request to Bel Fuse Inc., any security holder, or SEC staff.