LITTELFUSE INC /DE (LFUS)

Data as of Oct 30, 2026, from SEC Form 4 filings.

Net insider selling (90d)Watch LFUS

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Latest LFUS insider trades

David Ruppel - Officer
Open-market sale$604K
Oct 29, 2026
Jeffrey G. Gorski - Officer
Open-market sale

About LITTELFUSE INC /DE (LFUS)

The SEC lists LITTELFUSE INC /DE under CIK 0000889331, in switchgear and switchboard apparatus. It is grouped with Information Technology companies on this site.

Sector: Information Technology

SEC filings for LFUS on EDGAR

LFUS Form 4 activity by transaction type, last 90 days

Form 4 transaction type	Transactions	Shares	Total value
Open-market sale	1	1,493	$604K
Grant or award	23	533
Option exercise	2	2,224

LFUS insider transactions (Form 4)

143 Form 4 filings on record, the earliest from Dec 9, 2024, newest first. Filing history page 2 of 3.

Traded	Insider	Transaction	Security	Shares	Price	Value
Jun 4, 2026	T. J. Chung - Director	Grant or award	Common Stock	10^{footnote F1}	$480.24	$5K
Jun 4, 2026	T. J. Chung - Director	Grant or award	Common Stock	3^{footnote F2}	$480.24	$1K
Footnote F1 (shares): Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Footnote F2 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 4, 2026	Karim Wagdy Hamed - Officer	Grant or award	Common Stock	4^{footnote F1}	$480.24	$2K
Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 4, 2026	Gregory N. Henderson - Officer	Grant or award	Common Stock	31^{footnote F1}	$480.24	$15K
Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 4, 2026	William P. Noglows - Director	Grant or award	Common Stock	3^{footnote F1}	$480.24	$1K
Jun 4, 2026	William P. Noglows - Director	Grant or award	Common Stock	3^{footnote F2}	$480.24	$1K
Footnote F1 (shares): Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Footnote F2 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 4, 2026	Deepak Nayar - Officer	Grant or award	Common Stock	9^{footnote F1}	$480.24	$4K
Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 4, 2026	Anthony Grillo - Director	Grant or award	Common Stock	35^{footnote F1}	$480.24	$17K
Jun 4, 2026	Anthony Grillo - Director	Grant or award	Common Stock	3^{footnote F2}	$480.24	$1K
Footnote F1 (shares): Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Footnote F2 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 4, 2026	Abhishek Khandelwal - Officer	Grant or award	Common Stock	16^{footnote F1}	$480.24	$8K
Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 4, 2026	Maggie Chu - Officer	Grant or award	Common Stock	6^{footnote F1}	$480.24	$3K
Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 4, 2026	David Ruppel - Officer	Grant or award	Common Stock	5^{footnote F1}	$480.24	$2K
Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 4, 2026	Kristina A. Cerniglia - Director	Grant or award	Common Stock	3^{footnote F1}	$480.24	$1K
Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 4, 2026	Holly Beth Paeper - Director	Grant or award	Common Stock	1^{footnote F1}	$480.24	$480
Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 4, 2026	Jeffrey G. Gorski - Officer	Grant or award	Common Stock	1^{footnote F1}	$480.24	$480
Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 4, 2026	Peter Sung-Jip Kim - Officer	Grant or award	Common Stock	5^{footnote F1}	$480.24	$2K
Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.
Jun 3, 2026	Gordon Hunter - Director	Open-market sale	Common Stock	603^{footnote F1}	$488.31	$294K
Footnote F1 (shares): This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 3, 2026.
Jun 2, 2026	Peter Sung-Jip Kim - Officer	Option exercise	Common Stock	1,355	$267.84	$363K
Jun 2, 2026	Peter Sung-Jip Kim - Officer	Option exercise	Common Stock	2,486	$231.64	$576K
Jun 2, 2026	Peter Sung-Jip Kim - Officer	Option exercise	Common Stock	3,285	$240.76	$791K
Jun 2, 2026	Peter Sung-Jip Kim - Officer	Option exercise	Common Stock	3,045	$230.39	$702K
Jun 2, 2026	Peter Sung-Jip Kim - Officer	Open-market sale	Common Stock	81	$484.90^{footnote F2}	$39K
Jun 2, 2026	Peter Sung-Jip Kim - Officer	Option exercise	Stock Option (right to buy)	1,355	$0.00	-
Jun 2, 2026	Peter Sung-Jip Kim - Officer	Open-market sale	Common Stock	10,090	$486.18^{footnote F1}	$4.91M
Jun 2, 2026	Peter Sung-Jip Kim - Officer	Option exercise	Stock Option (right to buy)	2,486	$0.00	-
Jun 2, 2026	Peter Sung-Jip Kim - Officer	Option exercise	Stock Option (right to buy)	3,285	$0.00	-
Jun 2, 2026	Peter Sung-Jip Kim - Officer	Option exercise	Stock Option (right to buy)	3,045	$0.00	-
Footnote F1 (price): The shares were sold in multiple transactions at prices ranging from $485.95 to $486.64, 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… Full note on SEC EDGAR Footnote F2 (price): The shares were sold in multiple transactions at prices ranging from $484.77 to $485.08, 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… Full note on SEC EDGAR
May 20, 2026	Maggie Chu - Officer	Option exercise	Common Stock	4,030	$231.64	$934K
May 20, 2026	Maggie Chu - Officer	Option exercise	Common Stock	4,283	$240.76	$1.03M
May 20, 2026	Maggie Chu - Officer	Option exercise	Common Stock	3,084	$230.39	$711K
May 20, 2026	Maggie Chu - Officer	Open-market sale	Common Stock	8,926	$435.22^{footnote F1}	$3.88M
May 20, 2026	Maggie Chu - Officer	Open-market sale	Common Stock	2,408	$436.38^{footnote F2}	$1.05M
May 20, 2026	Maggie Chu - Officer	Open-market sale	Common Stock	63	$437.37^{footnote F3}	$28K
Apr 28, 2022	Maggie Chu - Officer	Option exercise	Stock Option (right to buy)	4,030	$0.00	-
Apr 27, 2023	Maggie Chu - Officer	Option exercise	Stock Option (right to buy)	4,283	$0.00	-
Apr 25, 2024	Maggie Chu - Officer	Option exercise	Stock Option (right to buy)	3,084	$0.00	-
Footnote F1 (price): The shares were sold in multiple transactions at prices ranging from $435.00 to $435.94, 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… Full note on SEC EDGAR Footnote F2 (price): The shares were sold in multiple transactions at prices ranging from $436.02 to $436.93, 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… Full note on SEC EDGAR Footnote F3 (price): The shares were sold in multiple transactions at prices ranging from $437.02 to $437.72, 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… Full note on SEC EDGAR
May 1, 2026	Anne-Marie W. D'Angelo - Officer	Grant or award	Common Stock	1,689^{footnote F1}	$0.00	-
Footnote F1 (shares): 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.
May 18, 2026	Deepak Nayar - Officer	Option exercise	Common Stock	2,287	$240.76	$551K
May 18, 2026	Deepak Nayar - Officer	Option exercise	Common Stock	2,333	$230.39	$537K
May 18, 2026	Deepak Nayar - Officer	Open-market sale	Common Stock	2,287	$446.78	$1.02M
May 18, 2026	Deepak Nayar - Officer	Open-market sale	Common Stock	2,333	$446.78	$1.04M
May 18, 2026	Deepak Nayar - Officer	Open-market sale	Common Stock	1,291	$446.78	$577K
Apr 27, 2023	Deepak Nayar - Officer	Option exercise	Stock Option (right to buy)	2,287	$0.00	-
Apr 25, 2024	Deepak Nayar - Officer	Option exercise	Stock Option (right to buy)	2,333	$0.00	-
May 18, 2026	David Ruppel - Officer	Open-market sale	Common Stock	506	$445.16	$225K
May 15, 2026	Gregory N. Henderson - Officer	Tax withholding / forfeiture	Common Stock	27	$446.11^{footnote F1}	$12K
Footnote F1 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.
Apr 30, 2026	Holly Beth Paeper	Grant or award	Common Stock	81^{footnote F1}	$404.17	$33K
Footnote F1 (shares): Represents shares acquired pursuant to deferred compensation plan.
Apr 28, 2026	Maggie Chu - Officer	Open-market sale	Common Stock	317	$392.47	$124K
Apr 28, 2026	Maggie Chu - Officer	Open-market sale	Common Stock	498	$392.47	$195K
Apr 30, 2026	Maggie Chu - Officer	Open-market sale	Common Stock	282	$396.90	$112K
Apr 24, 2026	Maggie Chu - Officer	Tax withholding / forfeiture	Common Stock	4	$407.14^{footnote F1}	$2K
Apr 24, 2026	Maggie Chu - Officer	Tax withholding / forfeiture	Common Stock	318	$407.14^{footnote F2}	$129K
Apr 25, 2026	Maggie Chu - Officer	Tax withholding / forfeiture	Common Stock	206	$407.14^{footnote F2}	$84K
Apr 27, 2026	Maggie Chu - Officer	Tax withholding / forfeiture	Common Stock	183	$403.02^{footnote F2}	$74K
Footnote F1 (price): Closing price per share on the trading date of the vesting of dividend equivalent units or on the next preceding trading date if the vesting occurs on a non-trading date. Footnote F2 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.
Apr 24, 2026	David Ruppel - Officer	Tax withholding / forfeiture	Common Stock	2	$407.14^{footnote F1}	$814
Apr 24, 2026	David Ruppel - Officer	Tax withholding / forfeiture	Common Stock	220	$407.14^{footnote F2}	$90K
Footnote F1 (price): Closing price per share on the trading date of the vesting of dividend equivalent units or on the next preceding trading date if the vesting occurs on a non-trading date. Footnote F2 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.
Apr 24, 2026	Jeffrey G. Gorski - Officer	Tax withholding / forfeiture	Common Stock	303	$407.14^{footnote F1}	$123K
Apr 25, 2026	Jeffrey G. Gorski - Officer	Tax withholding / forfeiture	Common Stock	205	$407.14^{footnote F1}	$83K
Apr 27, 2026	Jeffrey G. Gorski - Officer	Tax withholding / forfeiture	Common Stock	175	$403.02^{footnote F1}	$71K
Footnote F1 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.
Apr 24, 2026	Deepak Nayar - Officer	Tax withholding / forfeiture	Common Stock	7	$407.14^{footnote F1}	$3K
Apr 24, 2026	Deepak Nayar - Officer	Tax withholding / forfeiture	Common Stock	649	$407.14^{footnote F2}	$264K
Apr 25, 2026	Deepak Nayar - Officer	Tax withholding / forfeiture	Common Stock	423	$407.14^{footnote F2}	$172K
Apr 27, 2026	Deepak Nayar - Officer	Tax withholding / forfeiture	Common Stock	397	$403.02^{footnote F2}	$160K
Footnote F1 (price): Closing price per share on the trading date of the vesting of dividend equivalent units or on the next preceding trading date if the vesting occurs on a non-trading date. Footnote F2 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.
Apr 24, 2026	Gregory N. Henderson - Officer	Tax withholding / forfeiture	Common Stock	22	$407.14^{footnote F1}	$9K
Apr 24, 2026	Gregory N. Henderson - Officer	Tax withholding / forfeiture	Common Stock	1,669	$407.14^{footnote F2}	$680K
Apr 25, 2026	Gregory N. Henderson - Officer	Tax withholding / forfeiture	Common Stock	31	$407.14^{footnote F2}	$13K
Footnote F1 (price): Closing price per share on the trading date of the vesting of dividend equivalent units or on the next preceding trading date if the vesting occurs on a non-trading date. Footnote F2 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.
Apr 24, 2026	Ryan K. Stafford - Officer	Tax withholding / forfeiture	Common Stock	7	$407.14^{footnote F1}	$3K
Apr 24, 2026	Ryan K. Stafford - Officer	Tax withholding / forfeiture	Common Stock	611	$407.14^{footnote F2}	$249K
Apr 25, 2026	Ryan K. Stafford - Officer	Tax withholding / forfeiture	Common Stock	455	$407.14^{footnote F2}	$185K
Apr 27, 2026	Ryan K. Stafford - Officer	Tax withholding / forfeiture	Common Stock	399	$403.02^{footnote F2}	$161K
Footnote F1 (price): Closing price per share on the trading date of the vesting of dividend equivalent units or on the next preceding trading date if the vesting occurs on a non-trading date. Footnote F2 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.
Apr 24, 2026	Peter Sung-Jip Kim - Officer	Tax withholding / forfeiture	Common Stock	4	$407.14^{footnote F1}	$2K
Apr 24, 2026	Peter Sung-Jip Kim - Officer	Tax withholding / forfeiture	Common Stock	319	$407.14^{footnote F2}	$130K
Apr 25, 2026	Peter Sung-Jip Kim - Officer	Tax withholding / forfeiture	Common Stock	229	$407.14^{footnote F2}	$93K
Apr 27, 2026	Peter Sung-Jip Kim - Officer	Tax withholding / forfeiture	Common Stock	158	$403.02^{footnote F2}	$64K
Footnote F1 (price): Closing price per share on the trading date of the vesting of dividend equivalent units or on the next preceding trading date if the vesting occurs on a non-trading date. Footnote F2 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.
Apr 22, 2026	Karim Wagdy Hamed - Officer	Grant or award	Common Stock	1,521^{footnote F1}	$0.00	-
Footnote F1 (shares): 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.

Recent LFUS Form 8-K filings

Read LFUS company news

Oct 28, 2026Item 2.02, 7.01, 9.01

Read the filing on SEC EDGAR

Sep 17, 2026Item 7.01

Read the filing on SEC EDGAR

Sep 16, 2026Item 5.02, 9.01

Read the filing on SEC EDGAR

Aug 11, 2026Item 5.02, 7.01, 9.01

Recent LFUS Form 144 notices of proposed sale

An insider files Form 144 before selling restricted or control stock. It announces a planned sale. If the sale goes ahead, it shows up later on a Form 4.

Filed	Filer	Relationship	Shares	Market value	Notice
Oct 29, 2026	David Ruppel	Officer	1,493	$604K	View on EDGAR
Jul 17, 2026	-	-	-

LFUS insider trading FAQ

What is the latest insider trade for LFUS?

LITTELFUSE INC /DE (LFUS) had 22 insider filings in the last 90 days, with the most recent on 30 October 2026. The full record for LFUS runs to 143 Form 4 filings, the earliest from 9 December 2024. InsiderAlpha adds new Form 4, Form 144 and 8-K filings as they arrive from SEC EDGAR.

How many insiders are buying LFUS stock?

No insider purchases of LFUS were filed in the last 90 days.

How many insiders are selling LFUS stock?

1 insider sale of LFUS was filed in the last 90 days, totaling $604K.

Where can I see LFUS SEC filings (Form 4, 10-K, 10-Q, 8-K)?

This page collects LFUS Form 4 insider transactions, Form 144 sale notices and 8-K filings in one place. Annual 10-K and quarterly 10-Q reports live on the company's SEC EDGAR page.

More Information Technology companies with insider activity

Recent insider filings

The EDGAR links open each original Form 4, so you can check any number on this page against the filing it came from.

Oct 30, 2026 - Holly Beth Paeper view on EDGAR
Oct 30, 2026 - David Ruppel view on EDGAR
Sep 8, 2026 - Gordon Hunter view on EDGAR
Sep 8, 2026 - Kristina A. Cerniglia view on EDGAR
Sep 8, 2026 - Maria C. Green view on EDGAR
Sep 8, 2026 - Peter Sung-Jip Kim view on EDGAR
Sep 8, 2026 - Anne-Marie W. D'Angelo view on EDGAR
Sep 8, 2026 - Abhishek Khandelwal view on EDGAR
Sep 8, 2026 - Maggie Chu view on EDGAR

Related companies with recent insider activity

$POWLPOWELL INDUSTRIES INC

Learn more

Insider selling: signal or noise?: Why most insider sales are routine, and the few patterns worth a second look.
Form 144 vs Form 4: A Form 144 announces a planned sale; the Form 4 reports it after it happens.
Insider activity in Information Technology: Where LFUS's peers are being bought and sold.
Every recent Form 4: The market-wide feed, updated as filings arrive from SEC EDGAR.

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Form 4 transaction type

Transactions

Total value

Open-market sale

1,493

$604K

Grant or award

533

Option exercise

2,224

Traded

Insider

Transaction

Security

Price

Value

Jun 4, 2026

T. J. Chung - Director

Grant or award

Common Stock

10^{footnote F1}

$480.24

$5K

Jun 4, 2026

T. J. Chung - Director

Grant or award

Common Stock

3^{footnote F2}

$480.24

$1K

Footnote F1 (shares): Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.
Footnote F2 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 4, 2026

Karim Wagdy Hamed - Officer

Grant or award

Common Stock

4^{footnote F1}

$480.24

$2K

Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 4, 2026

Gregory N. Henderson - Officer

Grant or award

Common Stock

31^{footnote F1}

$480.24

$15K

Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 4, 2026

William P. Noglows - Director

Grant or award

Common Stock

3^{footnote F1}

$480.24

$1K

Jun 4, 2026

William P. Noglows - Director

Grant or award

Common Stock

3^{footnote F2}

$480.24

$1K

Footnote F1 (shares): Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.
Footnote F2 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 4, 2026

Deepak Nayar - Officer

Grant or award

Common Stock

9^{footnote F1}

$480.24

$4K

Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 4, 2026

Anthony Grillo - Director

Grant or award

Common Stock

35^{footnote F1}

$480.24

$17K

Jun 4, 2026

Anthony Grillo - Director

Grant or award

Common Stock

3^{footnote F2}

$480.24

$1K

Footnote F1 (shares): Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.
Footnote F2 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 4, 2026

Abhishek Khandelwal - Officer

Grant or award

Common Stock

16^{footnote F1}

$480.24

$8K

Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 4, 2026

Maggie Chu - Officer

Grant or award

Common Stock

6^{footnote F1}

$480.24

$3K

Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 4, 2026

David Ruppel - Officer

Grant or award

Common Stock

5^{footnote F1}

$480.24

$2K

Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 4, 2026

Kristina A. Cerniglia - Director

Grant or award

Common Stock

3^{footnote F1}

$480.24

$1K

Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 4, 2026

Holly Beth Paeper - Director

Grant or award

Common Stock

1^{footnote F1}

$480.24

$480

Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 4, 2026

Jeffrey G. Gorski - Officer

Grant or award

Common Stock

1^{footnote F1}

$480.24

$480

Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 4, 2026

Peter Sung-Jip Kim - Officer

Grant or award

Common Stock

5^{footnote F1}

$480.24

$2K

Footnote F1 (shares): Represents shares accrued as payment of dividends on unvested restricted stock units.

Jun 3, 2026

Gordon Hunter - Director

Open-market sale

Common Stock

603^{footnote F1}

$488.31

$294K

Footnote F1 (shares): This transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 3, 2026.

Jun 2, 2026

Peter Sung-Jip Kim - Officer

Option exercise

Common Stock

1,355

$267.84

$363K

Jun 2, 2026

Peter Sung-Jip Kim - Officer

Option exercise

Common Stock

2,486

$231.64

$576K

Jun 2, 2026

Peter Sung-Jip Kim - Officer

Option exercise

Common Stock

3,285

$240.76

$791K

Jun 2, 2026

Peter Sung-Jip Kim - Officer

Option exercise

Common Stock

3,045

$230.39

$702K

Jun 2, 2026

Peter Sung-Jip Kim - Officer

Open-market sale

Common Stock

$484.90^{footnote F2}

$39K

Jun 2, 2026

Peter Sung-Jip Kim - Officer

Option exercise

Stock Option (right to buy)

1,355

$0.00

Jun 2, 2026

Peter Sung-Jip Kim - Officer

Open-market sale

Common Stock

10,090

$486.18^{footnote F1}

$4.91M

Jun 2, 2026

Peter Sung-Jip Kim - Officer

Option exercise

Stock Option (right to buy)

2,486

$0.00

Jun 2, 2026

Peter Sung-Jip Kim - Officer

Option exercise

Stock Option (right to buy)

3,285

$0.00

Jun 2, 2026

Peter Sung-Jip Kim - Officer

Option exercise

Stock Option (right to buy)

3,045

$0.00

Footnote F1 (price): The shares were sold in multiple transactions at prices ranging from $485.95 to $486.64, 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… Full note on SEC EDGAR
Footnote F2 (price): The shares were sold in multiple transactions at prices ranging from $484.77 to $485.08, 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… Full note on SEC EDGAR

May 20, 2026

Maggie Chu - Officer

Option exercise

Common Stock

4,030

$231.64

$934K

May 20, 2026

Maggie Chu - Officer

Option exercise

Common Stock

4,283

$240.76

$1.03M

May 20, 2026

Maggie Chu - Officer

Option exercise

Common Stock

3,084

$230.39

$711K

May 20, 2026

Maggie Chu - Officer

Open-market sale

Common Stock

8,926

$435.22^{footnote F1}

$3.88M

May 20, 2026

Maggie Chu - Officer

Open-market sale

Common Stock

2,408

$436.38^{footnote F2}

$1.05M

May 20, 2026

Maggie Chu - Officer

Open-market sale

Common Stock

$437.37^{footnote F3}

$28K

Apr 28, 2022

Maggie Chu - Officer

Option exercise

Stock Option (right to buy)

4,030

$0.00

Apr 27, 2023

Maggie Chu - Officer

Option exercise

Stock Option (right to buy)

4,283

$0.00

Apr 25, 2024

Maggie Chu - Officer

Option exercise

Stock Option (right to buy)

3,084

$0.00

Footnote F1 (price): The shares were sold in multiple transactions at prices ranging from $435.00 to $435.94, 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… Full note on SEC EDGAR
Footnote F2 (price): The shares were sold in multiple transactions at prices ranging from $436.02 to $436.93, 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… Full note on SEC EDGAR
Footnote F3 (price): The shares were sold in multiple transactions at prices ranging from $437.02 to $437.72, 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… Full note on SEC EDGAR

May 1, 2026

Anne-Marie W. D'Angelo - Officer

Grant or award

Common Stock

1,689^{footnote F1}

$0.00

Footnote F1 (shares): 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.

May 18, 2026

Deepak Nayar - Officer

Option exercise

Common Stock

2,287

$240.76

$551K

May 18, 2026

Deepak Nayar - Officer

Option exercise

Common Stock

2,333

$230.39

$537K

May 18, 2026

Deepak Nayar - Officer

Open-market sale

Common Stock

2,287

$446.78

$1.02M

May 18, 2026

Deepak Nayar - Officer

Open-market sale

Common Stock

2,333

$446.78

$1.04M

May 18, 2026

Deepak Nayar - Officer

Open-market sale

Common Stock

1,291

$446.78

$577K

Apr 27, 2023

Deepak Nayar - Officer

Option exercise

Stock Option (right to buy)

2,287

$0.00

Apr 25, 2024

Deepak Nayar - Officer

Option exercise

Stock Option (right to buy)

2,333

$0.00

May 18, 2026

David Ruppel - Officer

Open-market sale

Common Stock

506

$445.16

$225K

May 15, 2026

Gregory N. Henderson - Officer

Tax withholding / forfeiture

Common Stock

$446.11^{footnote F1}

$12K

Footnote F1 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.

Apr 30, 2026

Holly Beth Paeper

Grant or award

Common Stock

81^{footnote F1}

$404.17

$33K

Footnote F1 (shares): Represents shares acquired pursuant to deferred compensation plan.

Apr 28, 2026

Maggie Chu - Officer

Open-market sale

Common Stock

317

$392.47

$124K

Apr 28, 2026

Maggie Chu - Officer

Open-market sale

Common Stock

498

$392.47

$195K

Apr 30, 2026

Maggie Chu - Officer

Open-market sale

Common Stock

282

$396.90

$112K

Apr 24, 2026

Maggie Chu - Officer

Tax withholding / forfeiture

Common Stock

$407.14^{footnote F1}

$2K

Apr 24, 2026

Maggie Chu - Officer

Tax withholding / forfeiture

Common Stock

318

$407.14^{footnote F2}

$129K

Apr 25, 2026

Maggie Chu - Officer

Tax withholding / forfeiture

Common Stock

206

$407.14^{footnote F2}

$84K

Apr 27, 2026

Maggie Chu - Officer

Tax withholding / forfeiture

Common Stock

183

$403.02^{footnote F2}

$74K

Footnote F1 (price): Closing price per share on the trading date of the vesting of dividend equivalent units or on the next preceding trading date if the vesting occurs on a non-trading date.
Footnote F2 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.

Apr 24, 2026

David Ruppel - Officer

Tax withholding / forfeiture

Common Stock

$407.14^{footnote F1}

$814

Apr 24, 2026

David Ruppel - Officer

Tax withholding / forfeiture

Common Stock

220

$407.14^{footnote F2}

$90K

Footnote F1 (price): Closing price per share on the trading date of the vesting of dividend equivalent units or on the next preceding trading date if the vesting occurs on a non-trading date.
Footnote F2 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.

Apr 24, 2026

Jeffrey G. Gorski - Officer

Tax withholding / forfeiture

Common Stock

303

$407.14^{footnote F1}

$123K

Apr 25, 2026

Jeffrey G. Gorski - Officer

Tax withholding / forfeiture

Common Stock

205

$407.14^{footnote F1}

$83K

Apr 27, 2026

Jeffrey G. Gorski - Officer

Tax withholding / forfeiture

Common Stock

175

$403.02^{footnote F1}

$71K

Footnote F1 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.

Apr 24, 2026

Deepak Nayar - Officer

Tax withholding / forfeiture

Common Stock

$407.14^{footnote F1}

$3K

Apr 24, 2026

Deepak Nayar - Officer

Tax withholding / forfeiture

Common Stock

649

$407.14^{footnote F2}

$264K

Apr 25, 2026

Deepak Nayar - Officer

Tax withholding / forfeiture

Common Stock

423

$407.14^{footnote F2}

$172K

Apr 27, 2026

Deepak Nayar - Officer

Tax withholding / forfeiture

Common Stock

397

$403.02^{footnote F2}

$160K

Footnote F1 (price): Closing price per share on the trading date of the vesting of dividend equivalent units or on the next preceding trading date if the vesting occurs on a non-trading date.
Footnote F2 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.

Apr 24, 2026

Gregory N. Henderson - Officer

Tax withholding / forfeiture

Common Stock

$407.14^{footnote F1}

$9K

Apr 24, 2026

Gregory N. Henderson - Officer

Tax withholding / forfeiture

Common Stock

1,669

$407.14^{footnote F2}

$680K

Apr 25, 2026

Gregory N. Henderson - Officer

Tax withholding / forfeiture

Common Stock

$407.14^{footnote F2}

$13K

Footnote F1 (price): Closing price per share on the trading date of the vesting of dividend equivalent units or on the next preceding trading date if the vesting occurs on a non-trading date.
Footnote F2 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.

Apr 24, 2026

Ryan K. Stafford - Officer

Tax withholding / forfeiture

Common Stock

$407.14^{footnote F1}

$3K

Apr 24, 2026

Ryan K. Stafford - Officer

Tax withholding / forfeiture

Common Stock

611

$407.14^{footnote F2}

$249K

Apr 25, 2026

Ryan K. Stafford - Officer

Tax withholding / forfeiture

Common Stock

455

$407.14^{footnote F2}

$185K

Apr 27, 2026

Ryan K. Stafford - Officer

Tax withholding / forfeiture

Common Stock

399

$403.02^{footnote F2}

$161K

Footnote F1 (price): Closing price per share on the trading date of the vesting of dividend equivalent units or on the next preceding trading date if the vesting occurs on a non-trading date.
Footnote F2 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.

Apr 24, 2026

Peter Sung-Jip Kim - Officer

Tax withholding / forfeiture

Common Stock

$407.14^{footnote F1}

$2K

Apr 24, 2026

Peter Sung-Jip Kim - Officer

Tax withholding / forfeiture

Common Stock

319

$407.14^{footnote F2}

$130K

Apr 25, 2026

Peter Sung-Jip Kim - Officer

Tax withholding / forfeiture

Common Stock

229

$407.14^{footnote F2}

$93K

Apr 27, 2026

Peter Sung-Jip Kim - Officer

Tax withholding / forfeiture

Common Stock

158

$403.02^{footnote F2}

$64K

Footnote F1 (price): Closing price per share on the trading date of the vesting of dividend equivalent units or on the next preceding trading date if the vesting occurs on a non-trading date.
Footnote F2 (price): Closing price per share on the trading date of the vesting of restricted stock units or on the next preceding trading date if the vesting occurs on a non-trading date.

Apr 22, 2026

Karim Wagdy Hamed - Officer

Grant or award

Common Stock

1,521^{footnote F1}

$0.00

Footnote F1 (shares): 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.

Filed

Filer

Relationship

Market value

Notice

Oct 29, 2026

David Ruppel

Officer

1,493

$604K

View on EDGAR

Jul 17, 2026