LFUS SVP Chu sells shares after option exercise

Littelfuse senior vice president and chief human resources officer Maggie Chu reported an insider transaction involving company common stock.

Rhea-AI Filing Summary

Littelfuse senior vice president and chief human resources officer Maggie Chu reported an insider transaction involving company common stock. On February 4, 2026, she exercised a stock option for 2,061 shares of common stock at an exercise price of $262.75 per share and acquired those shares directly. That same day, she sold 2,061 shares of common stock in market transactions at a weighted average price of $326.71 per share, with individual sale prices ranging from $326.68 to $327.40. After these transactions, Chu directly held 6,719 common shares of Littelfuse.

Insider Trade Summary

Exercise and Sale: 2,061 shares ($132K approx. pre-tax spread)

Exercise and Sale 3 txns

Insider Chu Maggie

Role SVP, CHRO

Sold 2,061 shs ($673K)

Approx. gross sale proceeds $673K

Approx. exercise cost $542K

Approx. pre-tax spread $132K

Type	Security	Shares	Price	Value
Exercise	Stock Option (right to buy)	2,061	$0.00	$0.00
Exercise	Common Stock	2,061	$262.75	$542K
Sale	Common Stock	2,061	$326.71	$673K

Holdings After Transaction: Stock Option (right to buy) — 0 contracts (Direct); Common Stock — 6,719 shares (Direct)

Footnotes (2)

1. F1. The shares were sold in multiple transactions at prices ranging from $326.68 to $327.40, 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.
2. F2. The option for 2,061 shares vests in increments of one third annually beginning on the first anniversary of the June 1, 2021 date of grant.

FAQ

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

What insider transaction did LFUS executive Maggie Chu report?

Maggie Chu, SVP and CHRO of Littelfuse, reported exercising options for 2,061 shares at $262.75 and selling 2,061 shares at a weighted average of $326.71 on February 4, 2026, according to the Form 4 filing.

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

After the reported transactions, Maggie Chu directly owns 6,719 shares of Littelfuse common stock. This reflects her holdings following the exercise of 2,061 options and the same-day sale of 2,061 common shares disclosed in the filing.

At what prices did Maggie Chu sell her LFUS shares on February 4, 2026?

The 2,061 Littelfuse shares were sold in multiple trades at prices ranging from $326.68 to $327.40. The Form 4 reports a weighted average sale price of $326.71 per share for these transactions executed on February 4, 2026.

What were the terms of Maggie Chu’s Littelfuse stock option exercise?

The Form 4 shows a stock option for 2,061 shares exercised at $262.75 per share on February 4, 2026. Footnotes state the option vests in one-third increments annually starting on the first anniversary of the June 1, 2021 grant date.

Is Maggie Chu considered an officer or director of Littelfuse (LFUS)?

Yes, Maggie Chu is reported as an officer of Littelfuse, serving as SVP, CHRO (senior vice president and chief human resources officer). The Form 4 indicates she is not listed as a director or 10% owner of the company.

Were the LFUS insider sales by Maggie Chu executed in a single trade?

No. The filing explains the 2,061 shares were sold in multiple transactions with prices between $326.68 and $327.40. The reported $326.71 price is a weighted average, and detailed trade breakdowns are available on request.

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

Form 4 Insider Transactions: What Each Field Means →

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Accepted by SEC EDGAR 02/05/2026 - 04:07 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^*

Chu Maggie

(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, CHRO

3. Date of Earliest Transaction (Month/Day/Year)
02/04/2026

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	02/04/2026		M		2,061	A	$262.75	8,780	D
Common Stock	02/04/2026		S		2,061	D	$326.71(1)	6,719	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)	$262.75	02/04/2026		M			2,061	(2)	06/01/2028	Common Stock	2,061	$0	0	D

Explanation of Responses:

1. The shares were sold in multiple transactions at prices ranging from $326.68 to $327.40, 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.

2. The option for 2,061 shares vests in increments of one third annually beginning on the first anniversary of the June 1, 2021 date of grant.

Remarks:

	/s/Ryan K. Stafford, Power of Attorney	02/05/2026
	** 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.