Littelfuse (LFUS) SVP awarded 1,047 RSUs vesting over three years

Rhea-AI Filing Summary

Kim Peter Sung-Jip reported acquisition or exercise transactions in this Form 4 filing.

Littelfuse senior vice president and GM of the Industrial Business, Peter Sung-Jip Kim, received a grant of 1,047 shares of common stock in the form of restricted stock units under the Littelfuse/IXYS Corporation Long-Term Incentive Plan.

The award vests in three equal annual installments, beginning on the first anniversary of the grant date. Following this grant, Kim directly holds 11,227 shares of common stock, reflecting a routine, compensation-related equity award rather than an open-market purchase.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Kim Peter Sung-Jip

Role SVP & GM Industrial Business

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,047	$0.00	--

Holdings After Transaction: Common Stock — 11,227 shares (Direct, null)

Footnotes (1)

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Key Figures

RSU grant size: 1,047 shares Grant price: $0.00 per share Post-grant holdings: 11,227 shares

3 metrics

RSU grant size 1,047 shares Restricted stock units granted on April 22, 2026

Grant price $0.00 per share Equity award, no cash paid by insider

Post-grant holdings 11,227 shares Total common shares directly held after the transaction

Key Terms

restricted stock units, Littelfuse/IXYS Corporation Long-Term Incentive Plan, vests in increments of one-third annually, grant, award, or other acquisition

4 terms

restricted stock units financial

"Represents the grant of restricted stock units to the reporting person"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

Littelfuse/IXYS Corporation Long-Term Incentive Plan financial

"pursuant to the Littelfuse/IXYS Corporation Long-Term Incentive Plan"

vests in increments of one-third annually financial

"The grant vests in increments of one-third annually"

grant, award, or other acquisition financial

"transaction code description: Grant, award, or other acquisition"

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^*

Kim Peter Sung-Jip

(Last) (First) (Middle)

6133 NORTH RIVER ROAD, SUITE 500

(Street)

ROSEMONT ILLINOIS 60018

(City) (State) (Zip)

UNITED STATES

(Country)

2. Issuer Name and Ticker or Trading Symbol
LITTELFUSE INC /DE [ LFUS ]

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

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP & GM Industrial Business

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
04/22/2026

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

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

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

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
Common Stock	04/22/2026		A		1,047(1)	A	$0	11,227	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. Represents the grant of restricted stock units to the reporting person pursuant to the Littelfuse/IXYS Corporation Long-Term Incentive Plan. The grant vests in increments of one-third annually beginning on the first anniversary of the date of grant.

Remarks:

	/s/Ryan K. Stafford, Power of Attorney	04/24/2026
	** 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.
* Form 4: SEC 1474 (03-26)

FAQ

What insider transaction did Littelfuse (LFUS) report for Peter Sung-Jip Kim?

Littelfuse reported that SVP & GM Industrial Business Peter Sung-Jip Kim received 1,047 restricted stock units as equity compensation. These RSUs are part of the company’s long-term incentive plan and increase his direct holdings to 11,227 common shares.

Is the Littelfuse (LFUS) Form 4 transaction an open-market buy or a stock grant?

The Form 4 shows a stock grant, not an open-market purchase. Kim received 1,047 restricted stock units at no cash cost under the Littelfuse/IXYS Corporation Long-Term Incentive Plan, which is standard equity-based executive compensation.

How do the 1,047 Littelfuse (LFUS) restricted stock units vest for Peter Sung-Jip Kim?

The 1,047 restricted stock units vest in three equal annual installments. Vesting begins on the first anniversary of the grant date, meaning one-third of the award becomes payable each year over a three-year period, subject to applicable plan terms.

What is Peter Sung-Jip Kim’s Littelfuse (LFUS) shareholding after this Form 4 grant?

After the reported grant, Peter Sung-Jip Kim directly holds 11,227 shares of Littelfuse common stock. This total reflects the newly awarded 1,047 restricted stock units added to his existing holdings, illustrating his ongoing equity exposure to the company.

What compensation plan governs the Littelfuse (LFUS) RSU grant to Peter Sung-Jip Kim?

The RSU grant was made under the Littelfuse/IXYS Corporation Long-Term Incentive Plan. This plan provides equity-based awards such as restricted stock units to executives, aligning management’s long-term interests with shareholders through stock-based compensation that vests over time.