Littelfuse SVP receives 1,018-share stock award

Littelfuse, Inc. senior vice president and general manager of the Transportation business, David Ruppel, reported an equity compensation grant.

Rhea-AI Filing Summary

Littelfuse, Inc. senior vice president and general manager of the Transportation business, David Ruppel, reported an equity compensation grant. He acquired 1,018 shares of common stock through a grant of restricted stock units at a stated price of $0.00 per share. Following this award, he directly holds 5,988 common shares. The restricted stock units were granted under the Littelfuse/IXYS Corporation Long-Term Incentive Plan and vest in three equal annual installments beginning on the first anniversary of the grant date.

Insider Trade Summary

Grant/Award: 1,018 shares

Grant/Award 1 txn

Insider Ruppel David

Role SVP & GM Transportation Bus.

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,018	$0.00	$0.00

Holdings After Transaction: Common Stock — 5,988 shares (Direct)

Footnotes (1)

1. F1. Represents the grant of restricted stock units to the reporting person pursuant to the Littelfuse/IXYS Corporation Long-Term Incentive Plan. The grant vests in increments of one-third annually beginning on the first anniversary of the date of grant.

Key Figures

RSU grant size: 1,018 shares Grant price: $0.00 per share Post-grant holdings: 5,988 shares +1 more

4 metrics

RSU grant size 1,018 shares Restricted stock units granted on April 22, 2026

Grant price $0.00 per share Stated price for RSU award

Post-grant holdings 5,988 shares Total common shares directly owned after transaction

Vesting structure 1/3 annually RSUs vest in three equal installments starting first anniversary

Key Terms

restricted stock units, Long-Term Incentive Plan, vests in increments of one-third annually

3 terms

restricted stock units financial

"Represents the grant of restricted stock units to the reporting person"

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.

Long-Term Incentive Plan financial

"pursuant to the Littelfuse/IXYS Corporation Long-Term Incentive Plan"

A long-term incentive plan is a company program that pays executives or employees with stock, options, or cash tied to multi-year performance goals, where the rewards become theirs only after meeting conditions over time. Think of it as a delayed bonus or retirement-style reward that aligns employees’ interests with shareholders by encouraging them to boost long-term value; investors watch these plans because they affect pay costs, share dilution and management incentives.

vests in increments of one-third annually financial

"The grant vests in increments of one-third annually beginning on the first anniversary"

FAQ

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

What insider transaction did David Ruppel report for Littelfuse (LFUS)?

David Ruppel reported receiving a grant of 1,018 shares of Littelfuse common stock as restricted stock units. The award is a compensation grant, not an open-market purchase, and is reported on a Form 4 insider transaction filing.

How many Littelfuse (LFUS) shares did David Ruppel acquire and at what price?

He acquired 1,018 shares of Littelfuse common stock through a restricted stock unit grant at a stated price of $0.00 per share. This reflects a non-cash equity compensation award rather than a market transaction involving cash payment.

What is David Ruppel’s Littelfuse (LFUS) share ownership after this grant?

After the restricted stock unit grant, David Ruppel directly holds 5,988 shares of Littelfuse common stock. This total includes the 1,018-share award reported in the filing and represents his direct ownership position following the transaction.

How do the Littelfuse (LFUS) restricted stock units granted to David Ruppel vest?

The restricted stock units vest in three equal annual installments. Vesting begins on the first anniversary of the grant date, with one-third of the units becoming vested each year under the Littelfuse/IXYS Corporation Long-Term Incentive Plan.

Under which plan were David Ruppel’s Littelfuse (LFUS) restricted stock units granted?

The grant was made under the Littelfuse/IXYS Corporation Long-Term Incentive Plan. This plan provides equity-based compensation, and the filing specifies that the reported 1,018 restricted stock units were awarded to the reporting person pursuant to this plan.

Is David Ruppel’s Littelfuse (LFUS) transaction a buy or a compensation grant?

The transaction is a compensation grant, not an open-market buy. It is coded as a grant, award, or other acquisition, with 1,018 restricted stock units granted at $0.00 per share under the company’s long-term incentive plan.

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

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Accepted by SEC EDGAR 04/24/2026 - 04:21 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^*

Ruppel David

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	SVP & GM Transportation Bus.

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		1,018(1)	A	$0	5,988	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 the grant of restricted stock units to the reporting person pursuant to the Littelfuse/IXYS Corporation Long-Term Incentive Plan. The grant vests in increments of one-third annually beginning on the first anniversary of the date of grant.

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)