Maggie Chu (LFUS) receives 1,084 restricted stock units under incentive plan

Rhea-AI Filing Summary

Chu Maggie reported acquisition or exercise transactions in this Form 4 filing.

Littelfuse senior vice president and CHRO Maggie Chu received an equity award of 1,084 restricted stock units under the Littelfuse/IXYS Corporation Long-Term Incentive Plan. The grant vests in one-third increments annually starting on the first anniversary of the grant date, bringing her direct holdings to 7,809 common shares.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Chu Maggie

Role SVP, CHRO

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,084	$0.00	--

Holdings After Transaction: Common Stock — 7,809 shares (Direct, null)

Footnotes (1)

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Key Figures

Restricted stock units granted: 1,084 units Grant price per share: $0.00 per share Shares held after transaction: 7,809 shares

3 metrics

Restricted stock units granted 1,084 units Equity award to SVP, CHRO Maggie Chu on April 22, 2026

Grant price per share $0.00 per share Stated acquisition price for the restricted stock unit grant

Shares held after transaction 7,809 shares Direct Littelfuse common stock holdings following the award

Key Terms

restricted stock units, Long-Term Incentive Plan, vests in increments of one-third annually

3 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.

Long-Term Incentive Plan financial

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

A long-term incentive plan is a company program that pays executives or employees with stock, options, or cash tied to multi-year performance goals, where the rewards become theirs only after meeting conditions over time. Think of it as a delayed bonus or retirement-style reward that aligns employees’ interests with shareholders by encouraging them to boost long-term value; investors watch these plans because they affect pay costs, share dilution and management incentives.

vests in increments of one-third annually financial

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

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^*

Chu Maggie

(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, CHRO

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		1,084(1)	A	$0	7,809	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 Maggie Chu?

Littelfuse reported that SVP and CHRO Maggie Chu received an equity award of 1,084 restricted stock units. These units were granted under the Littelfuse/IXYS Corporation Long-Term Incentive Plan as part of her compensation, with no cash paid per share.

How many Littelfuse (LFUS) shares does Maggie Chu hold after this Form 4?

After the reported award, Maggie Chu directly holds 7,809 shares of Littelfuse common stock. This reflects her position following the grant of 1,084 restricted stock units, which will convert into shares as they vest over time.

What is the size and nature of the Littelfuse (LFUS) equity grant to Maggie Chu?

Maggie Chu received 1,084 restricted stock units of Littelfuse common stock at a stated price of $0.00 per share. The award is compensation-related, not an open-market purchase, and is classified as a grant or award acquisition on the Form 4.

What vesting schedule applies to Maggie Chu’s new Littelfuse (LFUS) restricted stock units?

The 1,084 restricted stock units granted to Maggie Chu vest in one-third increments annually. Vesting begins on the first anniversary of the grant date, meaning the award will fully vest over three years if service-based conditions are met.

Is the Maggie Chu Form 4 for Littelfuse (LFUS) a buy or a grant?

The Form 4 reflects a grant, not a market buy. It shows a grant or award acquisition of 1,084 restricted stock units at $0.00 per share under a long-term incentive plan, which is standard equity-based compensation for senior executives.

What plan governs the restricted stock unit grant to Maggie Chu at Littelfuse (LFUS)?

The restricted stock unit grant is made under the Littelfuse/IXYS Corporation Long-Term Incentive Plan. This plan provides equity-based awards to eligible participants, aligning executive compensation with long-term company performance and shareholder interests over time.