Littelfuse awards 1,689 RSUs to legal chief

D'Angelo Anne-Marie W reported acquisition or exercise transactions in this Form 4 filing.

Rhea-AI Filing Summary

D'Angelo Anne-Marie W reported acquisition or exercise transactions in this Form 4 filing.

LITTELFUSE INC /DE reported that SVP & Chief Legal Officer Anne-Marie W D'Angelo received a grant of 1,689 restricted stock units representing Common Stock at no cost under the Littelfuse/IXYS Corporation Long-Term Incentive Plan. The award vests in one-third increments annually starting on the first anniversary of the grant date. Following this compensation-related grant, her reported direct holdings total 1,689 shares of Common Stock.

Insider Trade Summary

Grant/Award: 1,689 shares

Grant/Award 1 txn

Insider D'Angelo Anne-Marie W

Role SVP & Chief Legal Officer

Type	Security	Shares	Price	Value
Grant/Award	Common Stock	1,689	$0.00	$0.00

Holdings After Transaction: Common Stock — 1,689 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: 1,689 units Grant price per share: $0.0000 per share Holdings after grant: 1,689 shares +1 more

4 metrics

RSU grant size 1,689 units Restricted stock units granted to Anne-Marie W D’Angelo

Grant price per share $0.0000 per share Equity compensation, no cash paid by executive

Holdings after grant 1,689 shares Total direct Common Stock ownership following transaction

Vesting structure One-third annually Begins on first anniversary of grant date

Key Terms

restricted stock units, Long-Term Incentive Plan, grant, award, or other acquisition

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.

grant, award, or other acquisition financial

"transaction_code_description": "Grant, award, or other acquisition"

FAQ

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

What insider transaction did LFUS report for Anne-Marie W D'Angelo?

Littelfuse reported a compensation-related grant to Anne-Marie W D’Angelo of 1,689 restricted stock units representing Common Stock. The units were granted at no cash cost under a long-term incentive plan and increase her reported direct holdings to 1,689 shares after the transaction.

What type of securities were granted in the recent LFUS Form 4?

The filing shows a grant of restricted stock units representing Common Stock of Littelfuse. These units are part of the Littelfuse/IXYS Corporation Long-Term Incentive Plan and function as equity-based compensation, rather than a market purchase of shares by the executive.

How many Littelfuse shares does Anne-Marie W D'Angelo hold after this grant?

After the reported transaction, Anne-Marie W D’Angelo’s direct holdings are 1,689 shares of Littelfuse Common Stock. This figure reflects the newly granted restricted stock units as reported and represents her total direct ownership position immediately following the grant.

What is the vesting schedule for the LFUS restricted stock units granted?

The 1,689 restricted stock units granted to Anne-Marie W D’Angelo vest in three equal installments. Vesting occurs in one-third increments each year, beginning on the first anniversary of the grant date, aligning the award with multi-year service and performance considerations.

Did Anne-Marie W D'Angelo pay a purchase price for the LFUS units granted?

No purchase price was paid for the granted units; the transaction price per share is reported as 0.0000. This indicates the award is a form of equity compensation under the long-term incentive plan, not an open-market stock purchase by the executive.

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

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Accepted by SEC EDGAR 05/21/2026 - 04:05 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^*

D'Angelo Anne-Marie W

(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 & Chief Legal Officer

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
05/01/2026

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	05/01/2026		A		1,689(1)	A	$0	1,689	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.

	/s/ Anne-Marie D'Angelo	05/21/2026
	** 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)