Littelfuse director receives 482 restricted stock units

NOGLOWS WILLIAM P reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

NOGLOWS WILLIAM P reported acquisition or exercise transactions in this Form 4 filing.

Littelfuse director William P. Noglows reported an equity award and updated holdings in company stock. He received a grant of 482 restricted stock units of common stock under the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan. The award vests in full on the earlier of the first anniversary of the grant date or the date of Littelfuse’s 2027 Annual Meeting of Stockholders. Following this grant, he holds 22,176 shares of common stock directly. In addition, trusts for the benefit of his son and daughter each hold 2,500 shares of Littelfuse common stock.

Insider Trade Summary

Grant/Award: 482 shares

Grant/Award 3 txns

Insider NOGLOWS WILLIAM P

Role Director

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	482	$0.00	$0.00
holding	Common Stock	--	--	--
holding	Common Stock	--	--	--

Holdings After Transaction: Common Stock — 22,176 shares (Direct); Common Stock — 5,000 shares (Indirect, By Trust)

Footnotes (3)

1. F1. Represents the grant of restricted stock units to the reporting person pursuant to the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan, as amended. The grant vests in full on the earlier of (1) the first anniversary of the date of grant or (2) the date of the Company's 2027 Annual Meeting of Stockholders.
2. F2. Shares held in trust for the benefit of the reporting person's son.
3. F3. Shares held in trust for the benefit of the reporting person's daughter.

Key Figures

Restricted stock unit grant: 482 units Direct holdings after grant: 22,176 shares Son’s trust holdings: 2,500 shares +1 more

4 metrics

Restricted stock unit grant 482 units Grant of restricted stock units to director

Direct holdings after grant 22,176 shares Common stock held directly by William P. Noglows

Son’s trust holdings 2,500 shares Common stock held in trust for son

Daughter’s trust holdings 2,500 shares Common stock held in trust for daughter

Key Terms

restricted stock units, Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan, Annual Meeting of Stockholders, trust

4 terms

restricted stock units financial

"Represents the grant of restricted stock units to the reporting person pursuant to the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan"

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.

Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan financial

"Represents the grant of restricted stock units to the reporting person pursuant to the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan, as amended"

Annual Meeting of Stockholders financial

"The grant vests in full on the earlier of (1) the first anniversary of the date of grant or (2) the date of the Company's 2027 Annual Meeting of Stockholders"

trust financial

"Shares held in trust for the benefit of the reporting person's son"

A trust is a legal setup in which one party (the trustee) holds and manages assets—like cash, stocks or property—on behalf of other people (beneficiaries) according to instructions from the person who created it (the grantor). Think of it as a locked box with a keyholder who must follow written rules; for investors it matters because trusts influence who controls and benefits from assets, affect taxes and succession, and can change how quickly or transparently shares are bought, sold or voted.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What insider transaction did Littelfuse (LFUS) director William P. Noglows report?

William P. Noglows reported receiving a grant of 482 restricted stock units of Littelfuse common stock. The award was made under the company’s Amended and Restated Long-Term Incentive Plan as part of his director compensation, rather than an open-market purchase.

When do William P. Noglows’ 482 Littelfuse (LFUS) restricted stock units vest?

The 482 restricted stock units vest in full on the earlier of the first anniversary of the grant date or the date of Littelfuse’s 2027 Annual Meeting of Stockholders. This means vesting is tied to either time served or the future shareholder meeting.

How many Littelfuse (LFUS) shares does William P. Noglows hold after this Form 4 filing?

After the reported award, William P. Noglows holds 22,176 shares of Littelfuse common stock directly. In addition, separate trusts for the benefit of his son and daughter each hold 2,500 shares of Littelfuse common stock, reported as indirect holdings.

Are the new Littelfuse (LFUS) shares reported on Form 4 an open-market purchase?

No, the 482 Littelfuse shares are a grant of restricted stock units awarded as compensation under the company’s Long-Term Incentive Plan. The transaction code indicates a grant or award, not an open-market buy or sell transaction in the company’s stock.

What indirect Littelfuse (LFUS) holdings related to William P. Noglows are disclosed?

The filing shows 2,500 Littelfuse common shares held in trust for the benefit of his son and another 2,500 shares held in trust for the benefit of his daughter. These positions are reported as indirect ownership through trusts associated with his family.

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

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Accepted by SEC EDGAR 04/24/2026 - 04:20 PM 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^*

NOGLOWS WILLIAM P

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

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		482(1)	A	$0	22,176	D
Common Stock								2,500	I	By Trust(2)
Common Stock								2,500	I	By Trust(3)

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 Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan, as amended. The grant vests in full on the earlier of (1) the first anniversary of the date of grant or (2) the date of the Company's 2027 Annual Meeting of Stockholders.

2. Shares held in trust for the benefit of the reporting person's son.

3. Shares held in trust for the benefit of the reporting person's daughter.

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)