Key facts
- This page summarizes William P. Noglows's Form 4 filing for LITTELFUSE INC /DE (LFUS).
- 2 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 06 Feb 2026, 16:14.
William P. Noglows - 04 Feb 2026 Form 4 Insider Report for LITTELFUSE INC /DE (LFUS)
- Reporting relationship
- Director
- Issuer ticker
- LFUS
- Reported as of
- 04 Feb 2026
- Net transaction value
- +$181,508
- SEC form
- 4
- Accepted by SEC
- 06 Feb 2026, 16:14:19 UTC
- Prior SEC filing
- 08 Dec 2025
- Next SEC filing
- 09 Mar 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/Ryan K. Stafford, Power of Attorney
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
William P. Noglows filed Form 4 for LITTELFUSE INC /DE (LFUS) on 06 Feb 2026.
Change
- Previous filing in this sequence was filed on 08 Dec 2025.
- Current net transaction value: +$181,508.
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
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001201094
Primary reporting owner
NOGLOWS WILLIAM P
- Relationship
- Director
- Address
- 6133 NORTH RIVER ROAD, SUITE 500, ROSEMONT
- Signature
- /s/Ryan K. Stafford, Power of Attorney
- Signature date
- 06 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
- $181,508
- Shares
- +911
- Change %
- +4.4%
- Price
- $199.24
- Shares after
- 21,685
- Date
- 04 Feb 2026
- Ownership
- Direct
LFUS
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,500
- Date
- 04 Feb 2026
- Ownership
- By Trust
- Footnotes
- F1
LFUS
holding
Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 2,500
- Date
- 04 Feb 2026
- Ownership
- By Trust
- Footnotes
- F2
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
- -911
- Change %
- -100%
- Price
- $0.000000
- Shares after
- 0
- Date
- 04 Feb 2026
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
- 911
- Exercise price
- $199.24
- Footnotes
- F3
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 3 footnotes
Footnote F1
Shares held in trust for the benefit of the reporting person's son.
Footnote F2
Shares held in trust for the benefit of the reporting person's daughter.
Footnote F3
The option for 911 shares vested in increments of one third annually beginning on the first anniversary of the April 26, 2019 date of grant.