[Form 4] Littelfuse Inc Insider Trading Activity

Rhea-AI Filing Summary

Conrad Alexander, SVP & GM Passenger Vehicle at Littelfuse (LFUS), reported option vesting and subsequent open-market sales on 08/25/2025. The filing shows acquisitions labeled "M" totaling 9,697 shares through vesting/exercise of stock options at exercise prices of $166.63, $132.08 and $199.24. The reporting person sold 13,210 shares in multiple transactions at weighted-average sale prices of $261.06, $261.75 and $262.73, respectively. After these transactions the reporting person beneficially owned 3,427 shares, held directly. The filing lists the number of underlying options remaining exercisable (5,293; 3,604; 800) with stated expiration dates and shows the reporting was made by one reporting person with a POA signature dated 08/26/2025.

Positive

• 9,697 shares were acquired through scheduled vesting/exercise of stock options, with exercise prices disclosed
• The filing includes weighted-average sale prices and price ranges for the insider's sales and offers to provide per-transaction details on request
• Explanatory notes clearly state vesting schedules and option grant dates, improving transparency

Negative

• The reporting person sold a total of 13,210 shares in multiple transactions, reducing direct beneficial ownership to 3,427 shares
• Sales were executed at prices in the low $260s, representing substantial insider liquidity on the reported date

Insights

Securities Analyst

TL;DR: Insider vested nearly 9.7k shares and sold 13.21k shares the same day; net direct holdings now 3,427 shares.

The activity reflects scheduled option vesting followed by significant open-market sales on 08/25/2025. Acquisitions through vesting/exercise amounted to 9,697 shares across three option grants with specified exercise prices and exercisability/expiration details. Concurrent sales totaled 13,210 shares at weighted-average prices in the low $260s. The net effect reduced direct beneficial ownership to 3,427 shares. For investors, this is a disclosure of insider liquidity and option realization rather than an operational disclosure; the filing provides transaction sizes and weighted-average sale prices but no reasons for the sales.

Corporate Governance Expert

TL;DR: Transactions appear to follow vesting schedules and open-market disposals; reporting follows Form 4 requirements.

The explanatory notes state the vesting schedules for each option grant and indicate the sales were executed in multiple tranches with provided weighted-average prices and ranges. The filer offers to supply per-tranche sale details on request from the SEC or issuer. The form is signed via power of attorney and identifies the reporting persons title. This filing documents routine insider option vesting and subsequent disposition; it contains required disclosures and provides sale price ranges for transparency.

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

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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^*

Conrad Alexander

(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)
	SVP &GM Passenger Vehicle

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		5,293	A	$166.63	12,233	D
Common Stock	08/25/2025		M		3,604	A	$132.08	15,837	D
Common Stock	08/25/2025		M		800	A	$199.24	16,637	D
Common Stock	08/25/2025		S		8,217	D	$261.06(4)	8,420	D
Common Stock	08/25/2025		S		3,522	D	$261.75(5)	4,898	D
Common Stock	08/25/2025		S		1,471	D	$262.73(6)	3,427	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)	$166.63	08/25/2025		M			5,293	(1)	07/10/2027	Common Stock	5,293	$0	0	D
Stock Option (right to buy)	$132.08	08/25/2025		M			3,604	(2)	04/23/2027	Common Stock	3,604	$0	0	D
Stock Option (right to buy)	$199.24	08/25/2025		M			800	(3)	04/26/2026	Common Stock	800	$0	0	D

Explanation of Responses:

1. The option for 5,293 shares vested in increments of one third annually beginning on the first anniversary of the July 10, 2020 date of grant.

2. The option for 5,353 shares vested in increments of one third annually beginning on the first anniversary of the April 23, 2020 date of grant.

3. The option for 2,401 shares vested in increments of one third annually beginning on the first anniversary of the April 26, 2019 date of grant.

4. The shares were sold in multiple transactions at prices ranging from $260.43 to $261.42, 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.

5. 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.

6. 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.

	Ryan K. Stafford, 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.
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FAQ

What transactions did Conrad Alexander report on Form 4 for LFUS?

The report shows option-related acquisitions totaling 9,697 shares and open-market sales totaling 13,210 shares executed on 08/25/2025.

How many shares does Conrad Alexander beneficially own after the transactions?

Following the reported transactions the filing shows 3,427 shares beneficially owned, held directly.

At what prices were the LFUS shares sold by the reporting person?

The sales were executed in tranches with weighted-average prices of $261.06, $261.75, and $262.73; detailed per-tranche prices are given as ranges in the filing.

Were the acquisitions the result of option vesting or purchases?

The explanatory section states the acquisitions arose from option vesting/exercise across three grants with specified vesting schedules and exercise prices of $166.63, $132.08, and $199.24.

Who signed the Form 4 filing for Conrad Alexander?

The form was filed under power of attorney by Ryan K. Stafford with a signature date of 08/26/2025.