[Form 4] Littelfuse Inc Insider Trading Activity

Rhea-AI Filing Summary

Insider transactions at Littelfuse (LFUS): Ryan K. Stafford, Executive VP, CLO & Corporate Secretary, exercised a stock option and sold shares on 08/25/2025. He acquired 10,206 shares via exercise of options with a $199.24 exercise price and sold those shares in three blocks: 4,923 shares at a weighted average price of $260.84, 4,783 shares at $261.72, and 500 shares at $262.60. Following these transactions the reporting person beneficially owned 30,727 shares.

The filing provides per-share weighted average sale prices and states the option vested in annual one-third increments beginning April 26, 2019.

Positive

• Option exercise documented: 10,206-share option exercise at a $199.24 exercise price is explicitly reported
• Transparent sale disclosures: Weighted average sale prices provided and seller commits to supply per-transaction prices on request

Negative

• Insider sold 10,206 shares: Sales of 4,923, 4,783 and 500 shares reduced beneficial ownership from 40,933 to 30,727 shares
• No per-lot gross proceeds disclosed in the filing: Only weighted average sale prices are provided; detailed per-transaction amounts are available only upon request

Insights

Securities Analyst

TL;DR: Routine option exercise followed by sales; net effect is insider liquidity with no new disclosure of company fundamentals.

The reporting shows an option exercise for 10,206 shares at a $199.24 exercise price, immediately followed by sales of the same total amount across three price bands resulting in a reduction of beneficial ownership from 40,933 shares to 30,727 shares. This pattern is commonly consistent with executives exercising vested compensation and monetizing shares; the filing discloses weighted average sale prices but not gross proceeds. The transactions are dated and transparent, and the filing includes the vesting schedule detail.

Corporate Governance Expert

TL;DR: Transaction is standard executive compensation monetization; disclosure appears complete for Rule 16 reporting.

The Form 4 shows the option vested per the stated schedule and was exercised and sold on the same date. The filer supplied weighted average sale prices and committed to provide per-transaction pricing on request, which aligns with disclosure expectations. The reduction in direct beneficial ownership is documented. No amendments or additional arrangements are disclosed 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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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^*

Stafford Ryan K

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Executive VP, CLO & Corp Sec

3. Date of Earliest Transaction (Month/Day/Year)
08/25/2025

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	08/25/2025		M		10,206	A	$199.24	40,933	D
Common Stock	08/25/2025		S		4,923	D	$260.84(2)	36,010	D
Common Stock	08/25/2025		S		4,783	D	$261.72(3)	31,227	D
Common Stock	08/25/2025		S		500	D	$262.6(4)	30,727	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
Stock Option (right to buy)	$199.24	08/25/2025		M			10,206	(1)	04/26/2026	Common Stock	10,206	$0	0	D

Explanation of Responses:

1. The option for 10,206 shares vested in increments of one third annually beginning on the first anniversary of the April 26, 2019 date of grant.

2. The shares were sold in multiple transactions at prices ranging from $260.17 to $261.16, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

3. The shares were sold in multiple transactions at prices ranging from $261.20 to $262.13, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

4. The shares were sold in multiple transactions at prices ranging from $262.22 to $262.68, inclusive. This amount represents the weighted average sale price of such transactions. The reporting person undertakes to provide full information regarding the number of shares sold at each separate price upon request of the Securities and Exchange Commission, the Issuer, or a security holder of the Issuer.

Remarks:

Exhibit 24 - Power of Attorney

	Mark J. Reyes, Power of Attorney	08/26/2025
	** 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 did Ryan K. Stafford report on Form 4 for LFUS?

He reported an option exercise of 10,206 shares at a $199.24 exercise price and sales of those shares on 08/25/2025.

How many LFUS shares does the reporting person own after the transactions?

Following the reported transactions the reporting person beneficially owned 30,727 shares.

At what prices were the LFUS shares sold?

Sales were executed at weighted average prices of $260.84, $261.72, and $262.60 across three groupings.

When did the option vest and what is the vesting schedule?

The option vested in increments of one third annually beginning on the first anniversary of the April 26, 2019 grant date.

Does the filing provide per-transaction sale prices for the LFUS shares?

The filing provides weighted average prices and states the reporting person will provide per-transaction numbers upon request by the SEC, the issuer, or a security holder.