person · Reporting owner

NOGLOWS WILLIAM P

Disclosed activity across 3 companies

Tapewire entity: 35238
SEC CIK: 0001201094

Reported relationships

Latest disclosed role at each company.

Company	Last reported as	Report date	Published
ASPEN AEROGELS INCASPN · Entity 5645	Director	June 23, 2026	June 26, 2026
LITTELFUSE INC /DELFUS · Entity 3514	Director	September 03, 2026	September 08, 2026

Disclosed balances

About these balances

Latest available filing per company, not a reconstructed current portfolio. Matching sequences show the last reported balance with all source rows expandable; grouping alone does not establish account ownership. Do not add unresolved positions together. Filings may omit unchanged positions, and amendments may correct only part of an older disclosure. Jointly reported shares are not necessarily this owner's personal holdings.

ASPEN AEROGELS INC

Report date June 23, 2026 · Filed June 26, 2026

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	Direct	114,156	Reported balance After 2026-06-23 transaction · row 1 Account or security details depend on footnotes; rows are not merged. 1 source row Row 1 · 2026-06-23 · Exercise / conversion · Acquired 14,799 · Balance 114,156 F1: Represents 103,786 shares of Common Stock and 10,370 Restricted Stock Units.
Stock Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $4.75 · Expires 2026-06-24	Direct	0	Reported balance After 2026-06-23 transaction · row 4 Instrument identity requires review; Table II rows are not merged. 1 source row Row 4 · 2026-06-23 · Exercise / conversion · Disposed 14,799 · Balance 0 F4: These stock options were fully vested and exercisable.
Common StockSEC Table I · non-derivative	IndirectSee footnote 2	10,000	Reported balance Holding disclosure · report date 2026-06-23 · row 2 Holding and transaction disclosures are not merged. 1 source row Row 2 · Balance 10,000 F2: These shares of Common Stock are held by a Trust for the benefit of one of the reporting person's children, of which the reporting person is the Trustee.
Common StockSEC Table I · non-derivative	IndirectSee footnote 3	10,000	Reported balance Holding disclosure · report date 2026-06-23 · row 3 Holding and transaction disclosures are not merged. 1 source row Row 3 · Balance 10,000 F3: These shares of Common Stock are held by a Trust for the benefit of another one of the reporting person's children, of which the reporting person is the Trustee.

Filing footnotes · ownership attribution and instrument terms

F1: Represents 103,786 shares of Common Stock and 10,370 Restricted Stock Units.

F2: These shares of Common Stock are held by a Trust for the benefit of one of the reporting person's children, of which the reporting person is the Trustee.

F3: These shares of Common Stock are held by a Trust for the benefit of another one of the reporting person's children, of which the reporting person is the Trustee.

F4: These stock options were fully vested and exercisable.

LITTELFUSE INC /DE

Report date September 03, 2026 · Filed September 08, 2026

Security / award	Ownership account	Disclosed shares / units	Disclosure context
Common StockSEC Table I · non-derivative	Direct	22,186	Reported balance After 2026-09-03 transaction · row 1 Account or security details depend on footnotes; rows are not merged. 1 source row Row 1 · 2026-09-03 · Grant · Acquired 6 · Balance 22,186 F1: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. F2: The number of shares beneficially owned has been reduced to adjust for an overstatement of 2 shares in a Form 4 filed on 6/8/2026.
Common StockSEC Table I · non-derivative	Direct	22,187	Reported balance After 2026-09-03 transaction · row 2 Account or security details depend on footnotes; rows are not merged. 1 source row Row 2 · 2026-09-03 · Grant · Acquired 1 · Balance 22,187 F3: Represents shares accrued as payment of dividends on unvested restricted stock units.
Common StockSEC Table I · non-derivative	IndirectBy Trust	2,500	Reported balance Holding disclosure · report date 2026-09-03 · row 3 Holding and transaction disclosures are not merged. 1 source row Row 3 · Balance 2,500 F4: Shares held in trust for the benefit of the reporting person's son.
Common StockSEC Table I · non-derivative	IndirectBy Trust	2,500	Reported balance Holding disclosure · report date 2026-09-03 · row 4 Holding and transaction disclosures are not merged. 1 source row Row 4 · Balance 2,500 F5: Shares held in trust for the benefit of the reporting person's daughter.

Filing footnotes · ownership attribution and instrument terms

F1: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan.

F2: The number of shares beneficially owned has been reduced to adjust for an overstatement of 2 shares in a Form 4 filed on 6/8/2026.

F3: Represents shares accrued as payment of dividends on unvested restricted stock units.

F4: Shares held in trust for the benefit of the reporting person's son.

F5: Shares held in trust for the benefit of the reporting person's daughter.

Past disclosures · reporting ended (1)

No longer tracked through insider filings. These historical balances do not imply present ownership or a zero position.

CMC Materials, Inc.

Report date July 06, 2022 · Filed July 07, 2022

Section 16 reporting ended · disclosed 2022-07-07. Current position is not established by this disclosure.

Security / award	Ownership account	Disclosure context
Common StockSEC Table I · non-derivative	Direct	Reported balance After 2022-07-06 transaction · row 1 1 source row Row 1 · 2022-07-06 · Disposition to issuer · Disposed 24,947.291 · Balance 0 F1: Disposed of in connection with the transactions contemplated by the Agreement and Plan of Merger, dated as of December 14, 2021 (the "Merger Agreement"), by and among the Issuer, Entegris, Inc. ("Entegris") and Yosemite Merger Sub, Inc. ("Merger Sub"), a Delaware corporation and a wholly owned subsidiary of Entegris, pursuant to which the Issuer was merged with and into Merger Sub, with the Issuer surviving as a wholly owned subsidiary of Entegris (the "Merger"). Pursuant to the Merger Agreement, at the effective time of the Merger, each share of Issuer common stock was cancelled and converted into (i) $133.00 in cash and (ii) 0.4506 of a share of Entegris common stock, with cash in lieu of any fractional shares of Entegris common stock (together, the "Merger Consideration"). The Merger closed on July 6, 2022. On July 5, 2022, the closing price of the Issuer was $173.69, and the closing price of Entegris was $90.75. As a result of the Merger, the reporting person no longer beneficially owns, directly or indirectly, any shares of Issuer common stock.
Common StockSEC Table I · non-derivative	IndirectTrust	Reported balance After 2022-07-06 transaction · row 2 Account identity is unresolved; indirect or unspecified ownership is not merged. 1 source row Row 2 · 2022-07-06 · Disposition to issuer · Disposed 7,500 · Balance 0 F1: Disposed of in connection with the transactions contemplated by the Agreement and Plan of Merger, dated as of December 14, 2021 (the "Merger Agreement"), by and among the Issuer, Entegris, Inc. ("Entegris") and Yosemite Merger Sub, Inc. ("Merger Sub"), a Delaware corporation and a wholly owned subsidiary of Entegris, pursuant to which the Issuer was merged with and into Merger Sub, with the Issuer surviving as a wholly owned subsidiary of Entegris (the "Merger"). Pursuant to the Merger Agreement, at the effective time of the Merger, each share of Issuer common stock was cancelled and converted into (i) $133.00 in cash and (ii) 0.4506 of a share of Entegris common stock, with cash in lieu of any fractional shares of Entegris common stock (together, the "Merger Consideration"). The Merger closed on July 6, 2022. On July 5, 2022, the closing price of the Issuer was $173.69, and the closing price of Entegris was $90.75. As a result of the Merger, the reporting person no longer beneficially owns, directly or indirectly, any shares of Issuer common stock.
Common StockSEC Table I · non-derivative	IndirectTrust	Reported balance After 2022-07-06 transaction · row 3 Account identity is unresolved; indirect or unspecified ownership is not merged. 1 source row Row 3 · 2022-07-06 · Disposition to issuer · Disposed 26,125 · Balance 0 F1: Disposed of in connection with the transactions contemplated by the Agreement and Plan of Merger, dated as of December 14, 2021 (the "Merger Agreement"), by and among the Issuer, Entegris, Inc. ("Entegris") and Yosemite Merger Sub, Inc. ("Merger Sub"), a Delaware corporation and a wholly owned subsidiary of Entegris, pursuant to which the Issuer was merged with and into Merger Sub, with the Issuer surviving as a wholly owned subsidiary of Entegris (the "Merger"). Pursuant to the Merger Agreement, at the effective time of the Merger, each share of Issuer common stock was cancelled and converted into (i) $133.00 in cash and (ii) 0.4506 of a share of Entegris common stock, with cash in lieu of any fractional shares of Entegris common stock (together, the "Merger Consideration"). The Merger closed on July 6, 2022. On July 5, 2022, the closing price of the Issuer was $173.69, and the closing price of Entegris was $90.75. As a result of the Merger, the reporting person no longer beneficially owns, directly or indirectly, any shares of Issuer common stock.
Common StockSEC Table I · non-derivative	IndirectTrust	Reported balance After 2022-07-06 transaction · row 4 Account identity is unresolved; indirect or unspecified ownership is not merged. 1 source row Row 4 · 2022-07-06 · Disposition to issuer · Disposed 7,500 · Balance 0 F1: Disposed of in connection with the transactions contemplated by the Agreement and Plan of Merger, dated as of December 14, 2021 (the "Merger Agreement"), by and among the Issuer, Entegris, Inc. ("Entegris") and Yosemite Merger Sub, Inc. ("Merger Sub"), a Delaware corporation and a wholly owned subsidiary of Entegris, pursuant to which the Issuer was merged with and into Merger Sub, with the Issuer surviving as a wholly owned subsidiary of Entegris (the "Merger"). Pursuant to the Merger Agreement, at the effective time of the Merger, each share of Issuer common stock was cancelled and converted into (i) $133.00 in cash and (ii) 0.4506 of a share of Entegris common stock, with cash in lieu of any fractional shares of Entegris common stock (together, the "Merger Consideration"). The Merger closed on July 6, 2022. On July 5, 2022, the closing price of the Issuer was $173.69, and the closing price of Entegris was $90.75. As a result of the Merger, the reporting person no longer beneficially owns, directly or indirectly, any shares of Issuer common stock.
Stock Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $44.10 · Expires 2023-12-03	Direct	Reported balance After 2022-07-06 transaction · row 5 Instrument identity requires review; Table II rows are not merged. 1 source row Row 5 · 2022-07-06 · Disposition to issuer · Disposed 67,500 · Balance 0 F2: Pursuant to the Merger Agreement, at the effective time of the Merger, each outstanding option to purchase shares of Issuer common stock (an "Issuer Option") vested in full and was assumed and converted into an option to purchase shares of Entegris common stock (an "Entegris Option"), as adjusted based on the Equity Award Exchange Ratio (as defined in the Merger Agreement). F3: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 12/3/2014, vested in full and was assumed and converted into an Entegris Option to purchase 122,890 shares of Entegris common stock an exercise price of $24.23 per share.
Stock Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $39.29 · Expires 2026-03-08	Direct	Reported balance After 2022-07-06 transaction · row 6 Instrument identity requires review; Table II rows are not merged. 1 source row Row 6 · 2022-07-06 · Disposition to issuer · Disposed 9,638 · Balance 0 F2: Pursuant to the Merger Agreement, at the effective time of the Merger, each outstanding option to purchase shares of Issuer common stock (an "Issuer Option") vested in full and was assumed and converted into an option to purchase shares of Entegris common stock (an "Entegris Option"), as adjusted based on the Equity Award Exchange Ratio (as defined in the Merger Agreement). F4: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 3/8/2017, vested in full and was assumed and converted into an Entegris Option to purchase 17,546 shares of Entegris common stock an exercise price of $21.59 per share.
Stock Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $69.44 · Expires 2027-03-07	Direct	Reported balance After 2022-07-06 transaction · row 7 Instrument identity requires review; Table II rows are not merged. 1 source row Row 7 · 2022-07-06 · Disposition to issuer · Disposed 4,811 · Balance 0 F2: Pursuant to the Merger Agreement, at the effective time of the Merger, each outstanding option to purchase shares of Issuer common stock (an "Issuer Option") vested in full and was assumed and converted into an option to purchase shares of Entegris common stock (an "Entegris Option"), as adjusted based on the Equity Award Exchange Ratio (as defined in the Merger Agreement). F5: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 3/7/2018, vested in full and was assumed and converted into an Entegris Option to purchase 8,758 shares of Entegris common stock an exercise price of $38.15 per share.
Stock Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $106.61 · Expires 2028-03-06	Direct	Reported balance After 2022-07-06 transaction · row 8 Instrument identity requires review; Table II rows are not merged. 1 source row Row 8 · 2022-07-06 · Disposition to issuer · Disposed 3,385 · Balance 0 F2: Pursuant to the Merger Agreement, at the effective time of the Merger, each outstanding option to purchase shares of Issuer common stock (an "Issuer Option") vested in full and was assumed and converted into an option to purchase shares of Entegris common stock (an "Entegris Option"), as adjusted based on the Equity Award Exchange Ratio (as defined in the Merger Agreement). F6: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 3/6/2019, vested in full and was assumed and converted into an Entegris Option to purchase 6,162 shares of Entegris common stock an exercise price of $58.56 per share.
Stock Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $110.09 · Expires 2029-03-06	Direct	Reported balance After 2022-07-06 transaction · row 9 Instrument identity requires review; Table II rows are not merged. 1 source row Row 9 · 2022-07-06 · Disposition to issuer · Disposed 2,972 · Balance 0 F2: Pursuant to the Merger Agreement, at the effective time of the Merger, each outstanding option to purchase shares of Issuer common stock (an "Issuer Option") vested in full and was assumed and converted into an option to purchase shares of Entegris common stock (an "Entegris Option"), as adjusted based on the Equity Award Exchange Ratio (as defined in the Merger Agreement). F7: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 3/6/2021, vested in full and was assumed and converted into an Entegris Option to purchase 5,410 shares of Entegris common stock an exercise price of $60.47 per share.
Stock Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $147.78 · Expires 2030-03-04	Direct	Reported balance After 2022-07-06 transaction · row 10 Instrument identity requires review; Table II rows are not merged. 1 source row Row 10 · 2022-07-06 · Disposition to issuer · Disposed 1,958 · Balance 0 F2: Pursuant to the Merger Agreement, at the effective time of the Merger, each outstanding option to purchase shares of Issuer common stock (an "Issuer Option") vested in full and was assumed and converted into an option to purchase shares of Entegris common stock (an "Entegris Option"), as adjusted based on the Equity Award Exchange Ratio (as defined in the Merger Agreement). F8: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 3/4/2021, vested in full and was assumed and converted into an Entegris Option to purchase 3,564 shares of Entegris common stock an exercise price of $81.18 per share.
Stock Options (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $170.86 · Expires 2031-03-03	Direct	Reported balance After 2022-07-06 transaction · row 11 Instrument identity requires review; Table II rows are not merged. 1 source row Row 11 · 2022-07-06 · Disposition to issuer · Disposed 1,305 · Balance 0 F2: Pursuant to the Merger Agreement, at the effective time of the Merger, each outstanding option to purchase shares of Issuer common stock (an "Issuer Option") vested in full and was assumed and converted into an option to purchase shares of Entegris common stock (an "Entegris Option"), as adjusted based on the Equity Award Exchange Ratio (as defined in the Merger Agreement). F9: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 3/3/2022, vested in full and was assumed and converted into an Entegris Option to purchase 2,375 shares of Entegris common stock an exercise price of $93.85 per share.

Filing footnotes · ownership attribution and instrument terms

F1: Disposed of in connection with the transactions contemplated by the Agreement and Plan of Merger, dated as of December 14, 2021 (the "Merger Agreement"), by and among the Issuer, Entegris, Inc. ("Entegris") and Yosemite Merger Sub, Inc. ("Merger Sub"), a Delaware corporation and a wholly owned subsidiary of Entegris, pursuant to which the Issuer was merged with and into Merger Sub, with the Issuer surviving as a wholly owned subsidiary of Entegris (the "Merger"). Pursuant to the Merger Agreement, at the effective time of the Merger, each share of Issuer common stock was cancelled and converted into (i) $133.00 in cash and (ii) 0.4506 of a share of Entegris common stock, with cash in lieu of any fractional shares of Entegris common stock (together, the "Merger Consideration"). The Merger closed on July 6, 2022. On July 5, 2022, the closing price of the Issuer was $173.69, and the closing price of Entegris was $90.75. As a result of the Merger, the reporting person no longer beneficially owns, directly or indirectly, any shares of Issuer common stock.

F2: Pursuant to the Merger Agreement, at the effective time of the Merger, each outstanding option to purchase shares of Issuer common stock (an "Issuer Option") vested in full and was assumed and converted into an option to purchase shares of Entegris common stock (an "Entegris Option"), as adjusted based on the Equity Award Exchange Ratio (as defined in the Merger Agreement).

F3: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 12/3/2014, vested in full and was assumed and converted into an Entegris Option to purchase 122,890 shares of Entegris common stock an exercise price of $24.23 per share.

F4: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 3/8/2017, vested in full and was assumed and converted into an Entegris Option to purchase 17,546 shares of Entegris common stock an exercise price of $21.59 per share.

F5: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 3/7/2018, vested in full and was assumed and converted into an Entegris Option to purchase 8,758 shares of Entegris common stock an exercise price of $38.15 per share.

F6: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 3/6/2019, vested in full and was assumed and converted into an Entegris Option to purchase 6,162 shares of Entegris common stock an exercise price of $58.56 per share.

F7: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 3/6/2021, vested in full and was assumed and converted into an Entegris Option to purchase 5,410 shares of Entegris common stock an exercise price of $60.47 per share.

F8: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 3/4/2021, vested in full and was assumed and converted into an Entegris Option to purchase 3,564 shares of Entegris common stock an exercise price of $81.18 per share.

F9: This Issuer Option, which originally provided for vesting in four equal annual installments beginning on 3/3/2022, vested in full and was assumed and converted into an Entegris Option to purchase 2,375 shares of Entegris common stock an exercise price of $93.85 per share.

Transaction history

JSON API

Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction date	Company	Activity / security	Shares / units	Reported price	Reported value	Details
September 03, 2026 Filed Sep 8, 2026 20:02 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	1	$414.24	$414.24	Disclosure SEC source: 0001201094-26-000010 · wk-form4_1788897758.xml · nonDerivative · entry 2 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 22,187 F3 · shares: Represents shares accrued as payment of dividends on unvested restricted stock units. Read SEC document
September 03, 2026 Filed Sep 8, 2026 20:02 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	6	$414.24	$2,485.44	Disclosure SEC source: 0001201094-26-000010 · wk-form4_1788897758.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 22,186 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. F2 · balance_after: The number of shares beneficially owned has been reduced to adjust for an overstatement of 2 shares in a Form 4 filed on 6/8/2026. Read SEC document
June 23, 2026 Filed Jun 26, 2026 20:15 UTC	ASPEN AEROGELS INC ASPN · Entity 5645	Exercise / conversionStock Options (Right to Buy) · Derivative	14,799	$0.00 Strike: $4.75	$0.00	Disclosure SEC source: 0001104659-26-078273 · tm2619095-1_4seq1.xml · derivative · entry 4 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 14,799 shares Expires 2026-06-24 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F4 · derivative.exercise_date: These stock options were fully vested and exercisable. Read SEC document
June 23, 2026 Filed Jun 26, 2026 20:15 UTC	ASPEN AEROGELS INC ASPN · Entity 5645	Exercise / conversionCommon Stock	14,799	$4.75	$70,295.25	Disclosure SEC source: 0001104659-26-078273 · tm2619095-1_4seq1.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 114,156 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · balance_after: Represents 103,786 shares of Common Stock and 10,370 Restricted Stock Units. Read SEC document
June 04, 2026 Filed Jun 8, 2026 20:11 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	3	$480.24	$1,440.72	Disclosure SEC source: 0001201094-26-000008 · wk-form4_1780949475.xml · nonDerivative · entry 2 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 22,182 F2 · shares: Represents shares accrued as payment of dividends on unvested restricted stock units. Read SEC document
June 04, 2026 Filed Jun 8, 2026 20:11 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	3	$480.24	$1,440.72	Disclosure SEC source: 0001201094-26-000008 · wk-form4_1780949475.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 22,179 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
May 13, 2026 Filed May 14, 2026 21:30 UTC	ASPEN AEROGELS INC ASPN · Entity 5645	GrantStock Options (Right to Buy) · Derivative	8,706	$0.00 Strike: $5.40	$0.00	Disclosure SEC source: 0001193125-26-224374 · ownership.xml · derivative · entry 4 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 8,706 Underlying: Common Stock · 8,706 shares Expires 2036-05-13 F5 · derivative.exercise_date: The reporting person was granted options representing the remaining portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. The options will vest on the earlier of (a) May 13, 2027, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2027. Read SEC document
May 13, 2026 Filed May 14, 2026 21:30 UTC	ASPEN AEROGELS INC ASPN · Entity 5645	GrantCommon Stock	10,370	$0.00	$0.00	Disclosure SEC source: 0001193125-26-224374 · ownership.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 99,357 F1 · shares: The reporting person was granted Restricted Stock Units ("RSUs") representing a portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. Each RSU represents the right to receive one share of Common Stock upon vesting. These RSUs will vest on the earlier of (a) May 13, 2027, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2027. F2 · balance_after: Represents 88,987 shares of Common Stock and 10,370 RSUs. Read SEC document
April 22, 2026 Filed Apr 24, 2026 20:20 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	482	$0.00	$0.00	Disclosure SEC source: 0001201094-26-000006 · wk-form4_1777062035.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 22,176 F1 · shares: Represents the grant of restricted stock units to the reporting person pursuant to the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan, as amended. The grant vests in full on the earlier of (1) the first anniversary of the date of grant or (2) the date of the Company's 2027 Annual Meeting of Stockholders. Read SEC document
March 05, 2026 Filed Mar 9, 2026 20:40 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	2	$323.58	$647.16	Disclosure SEC source: 0001201094-26-000004 · wk-form4_1773088852.xml · nonDerivative · entry 2 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 21,694 F2 · shares: Represents shares accrued as payment of dividends on unvested restricted stock units. Read SEC document
March 05, 2026 Filed Mar 9, 2026 20:40 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	7	$323.58	$2,265.06	Disclosure SEC source: 0001201094-26-000004 · wk-form4_1773088852.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 21,692 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
February 04, 2026 Filed Feb 6, 2026 21:14 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	Exercise / conversionStock Option (right to buy) · Derivative	911	$0.00 Strike: $199.24	$0.00	Disclosure SEC source: 0001201094-26-000002 · wk-form4_1770412456.xml · derivative · entry 4 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 911 shares Expires 2026-04-26 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F3 · derivative.exercise_date: 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. Read SEC document
February 04, 2026 Filed Feb 6, 2026 21:14 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	Exercise / conversionCommon Stock	911	$199.24	$181,507.64	Disclosure SEC source: 0001201094-26-000002 · wk-form4_1770412456.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 21,685 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document
December 05, 2025 Filed Dec 8, 2025 22:24 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	8	$258.99	$2,071.92	Disclosure SEC source: 0000889331-25-000219 · form4.xml · nonDerivative · entry 2 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,774 F2 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
December 05, 2025 Filed Dec 8, 2025 22:24 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	3	$258.99	$776.97	Disclosure SEC source: 0000889331-25-000219 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,766 F1 · shares: Represents shares accrued as payment of dividends on unvested restricted stock units. Read SEC document
September 05, 2025 Filed Sep 8, 2025 20:19 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	3	$259.58	$778.74	Disclosure SEC source: 0000889331-25-000171 · form4.xml · nonDerivative · entry 2 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,763 F2 · shares: Represents shares accrued as payment of dividends on unvested restricted stock units. Read SEC document
September 05, 2025 Filed Sep 8, 2025 20:19 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	8	$259.58	$2,076.64	Disclosure SEC source: 0000889331-25-000171 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,760 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
June 05, 2025 Filed Jun 9, 2025 18:43 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	9	$214.18	$1,927.62	Disclosure SEC source: 0000889331-25-000116 · form4.xml · nonDerivative · entry 2 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,752 F2 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
June 05, 2025 Filed Jun 9, 2025 18:43 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	3	$214.18	$642.54	Disclosure SEC source: 0000889331-25-000116 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,743 F1 · shares: Represents shares accrued as payment of dividends on unvested restricted stock units. Read SEC document
April 30, 2025 Filed May 2, 2025 00:51 UTC	ASPEN AEROGELS INC ASPN · Entity 5645	GrantStock Options (Right to Buy) · Derivative	9,105	$0.00 Strike: $5.40	$0.00	Disclosure SEC source: 0000950170-25-062214 · ownership.xml · derivative · entry 4 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 9,105 Underlying: Common Stock · 9,105 shares Expires 2035-04-30 F5 · derivative.exercise_date: The reporting person was granted options representing the remaining portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. The options will vest on the earlier of (a) April 30, 2026, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2026. Read SEC document
April 30, 2025 Filed May 2, 2025 00:51 UTC	ASPEN AEROGELS INC ASPN · Entity 5645	GrantCommon Stock	10,370	$0.00	$0.00	Disclosure SEC source: 0000950170-25-062214 · ownership.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 88,987 F1 · shares: The reporting person was granted Restricted Stock Units ("RSUs") representing a portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. Each RSU represents the right to receive one share of Common Stock upon vesting. These RSUs will vest on the earlier of (a) April 30, 2026, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2026. F2 · balance_after: Represents 78,617 shares of Common Stock and 10,370 RSUs. Read SEC document
April 24, 2025 Filed Apr 28, 2025 20:30 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	1,019	$0.00	$0.00	Disclosure SEC source: 0000889331-25-000080 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 20,740 F1 · shares: Represents the grant of restricted stock units to the reporting person pursuant to the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan, as amended. The grant vests in full on the earlier of (1) the first anniversary of the date of grant or (2) the date of the Company's 2026 Annual Meeting of Stockholders. Read SEC document
March 07, 2025 Filed Mar 10, 2025 19:23 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	OtherCommon Stock	7	$218.33	$1,528.31	Disclosure SEC source: 0000889331-25-000029 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 19,721 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
February 04, 2025 Filed Feb 6, 2025 13:41 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	Exercise / conversionStock Option (right to buy) · Derivative	800	$0.00 Strike: $192.59	$0.00	Disclosure SEC source: 0000889331-25-000017 · form4.xml · derivative · entry 4 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 800 shares Expires 2025-04-27 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_date: The option for 800 shares vested in increments of one third annually beginning on the first anniversary of the April 27, 2018 date of grant. Read SEC document
February 04, 2025 Filed Feb 6, 2025 13:41 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	Exercise / conversionCommon Stock	800	$192.59	$154,072.00	Disclosure SEC source: 0000889331-25-000017 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 19,714 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document
December 06, 2024 Filed Dec 9, 2024 20:49 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	OtherCommon Stock	8	$247.32	$1,978.56	Disclosure SEC source: 0000889331-24-000195 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 18,914 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
September 06, 2024 Filed Sep 9, 2024 17:27 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	OtherCommon Stock	7	$256.00	$1,792.00	Disclosure SEC source: 0000889331-24-000171 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 18,906 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
June 07, 2024 Filed Jun 10, 2024 16:22 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	OtherCommon Stock	5	$250.13	$1,250.65	Disclosure SEC source: 0000889331-24-000145 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 18,899 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
May 30, 2024 Filed May 31, 2024 22:36 UTC	ASPEN AEROGELS INC ASPN · Entity 5645	GrantStock Options (Right to Buy) · Derivative	1,657	$0.00 Strike: $29.50	$0.00	Disclosure SEC source: 0000950170-24-067544 · ownership.xml · derivative · entry 4 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 1,657 Underlying: Common Stock · 1,657 shares Expires 2034-05-30 F4 · derivative.exercise_date: The reporting person was granted options representing the remaining portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. The options will vest on the earlier of (a) May 30, 2025, or (b) the day prior to the Issuer's annual Read SEC document
May 30, 2024 Filed May 31, 2024 22:36 UTC	ASPEN AEROGELS INC ASPN · Entity 5645	GrantCommon Stock	0	$0.00	$0.00	Disclosure SEC source: 0000950170-24-067544 · ownership.xml · nonDerivative · entry 3 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Indirect · See footnote 3 Disclosed balance after: 10,000 F3 · balance_after: These shares of Common Stock are held by a Trust for the benefit of another one of the reporting person's children, of which the reporting person is the Trustee. Read SEC document
May 30, 2024 Filed May 31, 2024 22:36 UTC	ASPEN AEROGELS INC ASPN · Entity 5645	GrantCommon Stock	0	$0.00	$0.00	Disclosure SEC source: 0000950170-24-067544 · ownership.xml · nonDerivative · entry 2 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Indirect · See footnote 2 Disclosed balance after: 10,000 F2 · balance_after: These shares of Common Stock are held by a Trust for the benefit of one of the reporting person's children, of which the reporting person is the Trustee. Read SEC document
May 30, 2024 Filed May 31, 2024 22:36 UTC	ASPEN AEROGELS INC ASPN · Entity 5645	GrantCommon Stock	1,898	$0.00	$0.00	Disclosure SEC source: 0000950170-24-067544 · ownership.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 78,617 F1 · shares: The reporting person was granted restricted shares of common stock representing a portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. These restricted shares will vest on the earlier of (a) May 30, 2025, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2025. Read SEC document
April 25, 2024 Filed Apr 29, 2024 14:20 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantStock Option (right to buy) · Derivative	768	$0.00 Strike: $230.39	$0.00	Disclosure SEC source: 0000889331-24-000100 · form4.xml · derivative · entry 4 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 768 Underlying: Common Stock · 768 shares Expires 2031-04-25 F4 · derivative.exercise_date: The option vests in increments of one-third annually beginning on the first anniversary of the date of grant. Read SEC document
April 25, 2024 Filed Apr 29, 2024 14:20 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	522	$0.00	$0.00	Disclosure SEC source: 0000889331-24-000100 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 18,894 F1 · shares: Represents the grant of restricted stock units to the reporting person pursuant to the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan, as amended. The grant vests in increments of one-third annually beginning on the first anniversary of the date of grant. Read SEC document
March 08, 2024 Filed Mar 11, 2024 16:44 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	OtherCommon Stock	7	$244.90	$1,714.30	Disclosure SEC source: 0000889331-24-000046 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 18,372 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
January 09, 2024 Filed Jan 10, 2024 16:34 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	Exercise / conversionStock Option (right to buy) · Derivative	945	$0.00 Strike: $154.15	$0.00	Disclosure SEC source: 0000889331-24-000006 · form4.xml · derivative · entry 4 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 945 shares Expires 2024-04-28 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_date: The option for 945 shares vested in increments of one third annually beginning on the first anniversary of the April 28, 2017 date of grant. Read SEC document
January 09, 2024 Filed Jan 10, 2024 16:34 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	Exercise / conversionCommon Stock	945	$154.15	$145,671.75	Disclosure SEC source: 0000889331-24-000006 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 18,365 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. Read SEC document
December 08, 2023 Filed Dec 11, 2023 19:27 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	OtherCommon Stock	8	$243.04	$1,944.32	Disclosure SEC source: 0000889331-23-000163 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 17,420 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
September 08, 2023 Filed Sep 11, 2023 14:32 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	OtherCommon Stock	7	$259.49	$1,816.43	Disclosure SEC source: 0000889331-23-000137 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 17,412 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
June 09, 2023 Filed Jun 12, 2023 16:10 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	OtherCommon Stock	6	$271.09	$1,626.54	Disclosure SEC source: 0000889331-23-000121 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 17,405 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
June 01, 2023 Filed Jun 2, 2023 20:18 UTC	ASPEN AEROGELS INC ASPN · Entity 5645	GrantStock Option (Right-to-Buy) · Derivative	7,712	$0.00 Strike: $6.81	$0.00	Disclosure SEC source: 0001209191-23-033700 · doc4.xml · derivative · entry 4 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 7,712 Underlying: Common Stock · 7,712 shares Expires 2033-06-01 F4 · derivative.exercise_date: The reporting person was granted options representing the remaining portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. The options will vest on the earlier of (a) June 1, 2024, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2024. Read SEC document
June 01, 2023 Filed Jun 2, 2023 20:18 UTC	ASPEN AEROGELS INC ASPN · Entity 5645	GrantCommon Stock	7,488	$0.00	$0.00	Disclosure SEC source: 0001209191-23-033700 · doc4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 76,719 F1 · shares: The reporting person was granted restricted shares of common stock representing a portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. These restricted shares will vest on the earlier of (a) June 1, 2024, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2024. Read SEC document
April 27, 2023 Filed May 1, 2023 16:02 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantStock Option (right to buy) · Derivative	718	$0.00 Strike: $240.76	$0.00	Disclosure SEC source: 0000889331-23-000068 · form4.xml · derivative · entry 4 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 718 Underlying: Common Stock · 718 shares Expires 2030-04-27 F2 · derivative.exercise_date: The option vests in increments of one-third annually beginning on the first anniversary of the date of grant. Read SEC document
April 27, 2023 Filed May 1, 2023 16:02 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	GrantCommon Stock	468	$0.00	$0.00	Disclosure SEC source: 0000889331-23-000068 · form4.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: No plan indicated Ownership: Direct Disclosed balance after: 17,399 F1 · shares: Represents the grant of restricted stock units to the reporting person pursuant to the Amended and Restated Littelfuse, Inc. Long-Term Incentive Plan. The grant vests in increments of one-third annually beginning on the first anniversary of the date of grant. Read SEC document
March 10, 2023 Filed Mar 14, 2023 13:47 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	OtherCommon Stock	5	$264.30	$1,321.50	Disclosure SEC source: 0001567619-23-004986 · doc1.xml · nonDerivative · entry 1 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 16,931 F1 · shares: Represents shares acquired pursuant to reinvestment of dividends on shares held pursuant to a deferred compensation plan. Read SEC document
February 07, 2023 Filed Feb 8, 2023 16:40 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	Exercise / conversionStock Option (right to buy) · Derivative	1,200	$0.00 Strike: $120.15	$0.00	Disclosure SEC source: 0001567619-23-002036 · doc1.xml · derivative · entry 9 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 0 Underlying: Common Stock · 1,200 shares Expires 2023-04-22 Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event. F1 · derivative.exercise_date: The option for 1,200 shares vested in increments of one third annually beginning on the first anniversary of the April 22, 2016 date of grant Read SEC document
February 07, 2023 Filed Feb 8, 2023 16:40 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	SaleCommon Stock	3	$266.50	$799.50	Disclosure SEC source: 0001567619-23-002036 · doc1.xml · nonDerivative · entry 6 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 16,926 F6 · price: The shares were sold in multiple transactions at prices ranging from $266.50 to $267.49, 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 Read SEC document
February 07, 2023 Filed Feb 8, 2023 16:40 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	SaleCommon Stock	529	$265.41	$140,401.89	Disclosure SEC source: 0001567619-23-002036 · doc1.xml · nonDerivative · entry 5 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 16,929 F5 · price: The shares were sold in multiple transactions at prices ranging from $265.08 to $266.07, 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 Read SEC document
February 07, 2023 Filed Feb 8, 2023 16:40 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	SaleCommon Stock	398	$264.28	$105,183.44	Disclosure SEC source: 0001567619-23-002036 · doc1.xml · nonDerivative · entry 4 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 17,458 F4 · price: The shares were sold in multiple transactions at prices ranging from $263.87 to $264.86, 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 Read SEC document
February 07, 2023 Filed Feb 8, 2023 16:40 UTC	LITTELFUSE INC /DE LFUS · Entity 3514	SaleCommon Stock	202	$262.83	$53,091.66	Disclosure SEC source: 0001567619-23-002036 · doc1.xml · nonDerivative · entry 3 NOGLOWS WILLIAM P · CIK 0001201094 · Director 10b5-1 filing: Not disclosed Ownership: Direct Disclosed balance after: 17,856 F3 · price: The shares were sold in multiple transactions at prices ranging from $262.38 to $263.37, 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 Read SEC document

Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.