Littelfuse officer Ruppel proposes $604K share sale

Merrill is listed as broker, with October 29, 2026, as the approximate sale date.

Available on EDGAR 10/29/2026 - 04:21 PM EDT Accepted by SEC EDGAR 10/29/2026 - 04:20 PM EDT Learn about SEC filing dates

Rhea-AI Filing Summary

David Ruppel, an officer of Littelfuse Inc., reported a proposed sale of 1,493 common shares, with an aggregate market value of $604,032.67. Merrill is listed as the broker, and October 29, 2026, is the approximate sale date. The shares are listed as 381 shares from a restricted stock vest dated August 14, 2026, and 1,112 shares from a stock option exercise dated August 14, 2024.

Key Figures

Proposed sale: 1,493 common shares Aggregate market value: $604,032.67 Shares outstanding: 25,403,547 shares +2 more

5 metrics

Proposed sale 1,493 common shares Reported by David Ruppel

Aggregate market value $604,032.67 For the proposed sale

Shares outstanding 25,403,547 shares Figure listed with the securities to be sold

Restricted stock vest 381 shares Dated August 14, 2026

Stock option exercise 1,112 shares Dated August 14, 2024

Key Terms

Rule 144, Restricted Stock Vest, Stock Option Exercise

3 terms

Rule 144 regulatory

"paragraph (a) of Rule 144"

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

Restricted Stock Vest technical

"Restricted Stock Vest"

A restricted stock vest is the moment when shares granted to an employee or executive under conditions (like staying at the company or hitting targets) officially become theirs to keep or sell. Think of it as a timed gift that unlocks only after certain rules are met. Investors watch vesting because it can change who controls shares, create potential selling pressure when large blocks unlock, and reveal how management’s incentives are aligned with company performance.

Stock Option Exercise technical

"Stock Option Exercise"

A stock option exercise is the act of using a previously granted right to buy shares of a company's stock at a specific, predetermined price by paying that price and receiving the shares. It matters to investors because exercising changes who owns the shares (which can dilute existing ownership), can trigger taxable events and shift potential gains or losses, and affects voting power and the company’s outstanding share count—like turning a voucher into an actual product that becomes part of circulating supply.

FAQ

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

How many LFUS shares did David Ruppel report for a proposed sale?

Littelfuse officer David Ruppel reported a proposed sale of 1,493 common shares, with an aggregate market value of $604,032.67.

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

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Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0002055015
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	LITTELFUSE INC
SEC File Number	000-20388
Address of Issuer	6133 North River Road Ste 500 Rosemont ILLINOIS 60018
Phone	773-628-1000
Name of Person for Whose Account the Securities are To Be Sold	David Ruppel
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Officer

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Merrill 8890 Lyra Dr 5th Flr Columbus OH 43240	1493	604032.67	25403547	10/29/2026	NASDAQ

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	08/14/2026	Restricted Stock Vest	Littelfuse, Inc			381	08/14/2026	NA
Common	08/14/2024	Stock Option Exercise	Littelfuse, Inc			1112	10/29/2026	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Nothing to Report

144: Remarks and Signature

Remarks
Date of Notice	10/29/2026
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	David Ruppel
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)