Ryan K. Stafford - 02 Feb 2026 Form 4 Insider Report for LITTELFUSE INC /DE (LFUS)

Reporting relationship: Executive VP, CLO & Corp Sec
Issuer ticker: LFUS
Reported as of: 02 Feb 2026
Net transaction value: -$3,252,778
SEC form: 4
Accepted by SEC: 04 Feb 2026, 16:44:16 UTC
Prior SEC filing: 15 Dec 2025
Next SEC filing: 09 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/Mark J. Reyes, Power of Attorney

Key filing fact

Ryan K. Stafford filed Form 4 for LITTELFUSE INC /DE (LFUS) on 04 Feb 2026.

Key facts

This page summarizes Ryan K. Stafford's Form 4 filing for LITTELFUSE INC /DE (LFUS).
5 reported transactions and 1 derivative row are listed below.
Accepted by SEC: 04 Feb 2026, 16:44.

Change

Previous filing in this sequence was filed on 15 Dec 2025.
Current net transaction value: -$3,252,778.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001384707 Primary reporting owner

Stafford Ryan K

Relationship: Executive VP, CLO & Corp Sec
Address: 6133 NORTH RIVER ROAD, SUITE 500, ROSEMONT
Signature: /s/Mark J. Reyes, Power of Attorney
Signature date: 04 Feb 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

LFUS transaction

Common Stock

Options Exercise

Transaction value: $2,224,095
Shares: +16,839
Change %: +59%
Price: $132.08
Shares after: 45,430
Date: 02 Feb 2026
Ownership: Direct

LFUS transaction

Common Stock

Sale

Transaction value: $35,659
Shares: -109
Change %: -0.24%
Price: $327.15
Shares after: 45,321
Date: 02 Feb 2026
Ownership: Direct
Footnotes: F1

LFUS transaction

Common Stock

Sale

Transaction value: $203,378
Shares: -623
Change %: -1.4%
Price: $326.45
Shares after: 44,698
Date: 02 Feb 2026
Ownership: Direct
Footnotes: F2

LFUS transaction

Common Stock

Sale

Transaction value: $5,237,835
Shares: -16,107
Change %: -36%
Price: $325.19
Shares after: 28,591
Date: 02 Feb 2026
Ownership: Direct
Footnotes: F3

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

LFUS transaction Derivative

Stock Option (right to buy)

Options Exercise

Transaction value: $0
Shares: -16,839
Change %: -100%
Price: $0.000000
Shares after: 0
Date: 02 Feb 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 16,839
Exercise price: $132.08
Footnotes: F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 4 footnotes

Footnote F1

The shares were sold in multiple transactions at prices ranging from $327.01 to $327.55, 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.

Footnote F2

The shares were sold in multiple transactions at prices ranging from $326.06 to $326.93, 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.

Footnote F3

The shares were sold in multiple transactions at prices ranging from $325.00 to $325.99, 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.

Footnote F4

The option for 16,839 shares vested in increments of one third annually beginning on the first anniversary of the April 23, 2020 date of grant.