[Form 4] Littelfuse Inc Insider Trading Activity

Rhea-AI Filing Summary

Littelfuse Inc. director Anthony Grillo acquired additional common shares on 09/05/2025 through dividend reinvestment and dividend accrual on unvested restricted stock units. The filing shows two non-derivative acquisitions at a price of $259.58 per share: 86 shares via reinvested dividends under a deferred compensation plan and 3 shares accrued as dividend payment on unvested RSUs, bringing his beneficial ownership to 74,227 shares.

The Form 4 is a routine insider reporting of compensation-related share accruals and reinvestment rather than an open-market purchase or sale, and it was signed by a power of attorney on 09/08/2025.

Positive

• Director increased ownership by 89 shares through dividend reinvestment and RSU dividend accrual, demonstrating passive accumulation
• Form 4 disclosure was filed and signed (via power of attorney), indicating compliance with Section 16 reporting requirements

Negative

• None.

Insights

Financial Analyst

TL;DR: Director acquired 89 shares via dividend reinvestment and RSU accrual; transaction is routine, not a material change in ownership.

This Form 4 documents non-market acquisitions totaling 89 shares at $259.58 each, reflecting dividend reinvestment and RSU dividend accruals rather than discretionary open-market buying. The change increases reported beneficial ownership from 74,224 to 74,227 shares, a de minimis move relative to typical institutional holdings and the companys market capitalization. No sales, option exercises, or other dilutive actions are reported.

Corporate Governance Expert

TL;DR: Routine insider reporting of compensation-related share accruals; compliance with Section 16 filing requirements appears satisfied.

The filing indicates timely disclosure of director-related equity changes and notes use of a power of attorney to sign the Form 4. The transactions are explained as dividend reinvestment and dividend accrual on unvested RSUs, which are common compensation mechanisms. There are no indications of unusual insider selling or governance red flags in this filing.

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
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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^*

GRILLO ANTHONY

(Last) (First) (Middle)

6133 NORTH RIVER ROAD, SUITE 500

(Street)

ROSEMONT IL 60018

(City) (State) (Zip)

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)

3. Date of Earliest Transaction (Month/Day/Year)
09/05/2025

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
Common Stock	09/05/2025		A		86(1)	A	$259.58	74,224	D
Common Stock	09/05/2025		A		3(2)	A	$259.58	74,227	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 shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

2. Represents shares accrued as payment of dividends on unvested restricted stock units.

	Ryan K. Stafford, Power of Attorney	09/08/2025
	** 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 transactions did Anthony Grillo report on the Form 4 for LFUS?

The Form 4 reports two non-market acquisitions on 09/05/2025: 86 shares via dividend reinvestment under a deferred compensation plan and 3 shares accrued as dividends on unvested RSUs, both at $259.58 per share.

How many LFUS shares does Anthony Grillo beneficially own after the reported transactions?

Following the reported transactions, Anthony Grillo beneficially owns 74,227 shares of Littelfuse Inc.

Were these Form 4 transactions open-market purchases or sales?

No. The transactions were non-market acquisitions tied to dividend reinvestment and dividend accrual on unvested RSUs, not open-market trades.

When was the Form 4 signature dated for the LFUS filing?

The Form 4 shows a signature by power of attorney, Ryan K. Stafford, dated 09/08/2025.

What price per share is reported on the Form 4 for these LFUS transactions?

The price reported for both non-derivative acquisitions is $259.58 per share.