Bel Fuse VP Sells 1,900 Shares at $128 – Form 4 Insider Filing

Bel Fuse Inc. (BELFB) Form 4 filing: VP of Asia Operations Kenneth Koon Keung Lai sold 1,900 Class B common shares on 08/01/2025 at $128 per share, a gross value of roughly $243k.

Rhea-AI Filing Summary

Bel Fuse Inc. (BELFB) Form 4 filing: VP of Asia Operations Kenneth Koon Keung Lai sold 1,900 Class B common shares on 08/01/2025 at $128 per share, a gross value of roughly $243k. Following the sale, Lai directly owns 10,255 Class B shares. No derivative transactions were reported and the 10b5-1 trading-plan box was left unchecked. The filing was signed on 08/04/2025 and involves only this single reporting person. The disposal represents an estimated 15.6 % reduction in his directly-held stake.

Insights

Securities Analyst

TL;DR: Small insider sale; neutral signal given size vs. remaining stake.

The $243k disposition reduces Lai’s holdings to 10,255 shares but leaves him with a meaningful equity position. The trade equals roughly 16 % of his direct stake and is immaterial relative to Bel Fuse’s daily trading volume and market cap. Absence of a 10b5-1 plan or multiple sales patterns limits predictive value. Overall impact on valuation or sentiment should be minor.

Corporate Governance Expert

TL;DR: Routine Section 16 filing; governance impact negligible.

The transaction was properly disclosed within the two-business-day window and manually signed by an attorney-in-fact, satisfying SEC procedural requirements. No red flags such as back-dating or clustered executive selling are evident. Investors should monitor for additional insider activity but, in isolation, the event does not suggest governance concerns.

Insider Trade Summary

Net Seller: 1,900 shares

Net Sell 1 txn

Insider Lai Kenneth Koon Keung

Role VP of Asia Operations

Sold 1,900 shs ($243K)

Type	Security	Shares	Price	Value
Sale	Class B Common Stock	1,900	$128.00	$243K

Holdings After Transaction: Class B Common Stock — 10,255 shares (Direct)

FAQ

When did Bel Fuse VP Kenneth Lai sell BELFB shares?

The transaction date was 08/01/2025.

How many BELFB shares were sold in the Form 4 filing?

Lai disposed of 1,900 Class B common shares.

What price did the insider receive for the BELFB shares?

The reported sale price was $128 per share.

How many shares does the executive still own after the sale?

Post-transaction, Lai holds 10,255 Class B shares directly.

Was the sale made under a Rule 10b5-1 trading plan?

No— the 10b5-1 checkbox was left unchecked in the filing.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/04/2025 - 09:41 AM Learn about SEC filing dates

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)
08/01/2025

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	08/01/2025		S		1,900	D	$128	10,255	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:

	/s/ Lloyd Jeglikowski, Attorney-in-Fact	08/04/2025
	** 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.