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person · Reporting owner

NOGLOWS WILLIAM P

Disclosed activity across 3 companies

Tapewire entity
35238
SEC CIK
0001201094

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
ASPEN AEROGELS INCASPN · Entity 5645DirectorJune 23, 2026June 26, 2026
LITTELFUSE INC /DELFUS · Entity 3514DirectorSeptember 03, 2026September 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 / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect114,156 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 2026-06-24Direct0 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-derivativeIndirectSee footnote 210,000 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-derivativeIndirectSee footnote 310,000 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 / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect22,186 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-derivativeDirect22,187 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-derivativeIndirectBy Trust2,500 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-derivativeIndirectBy Trust2,500 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 / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect0 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-derivativeIndirectTrust0 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-derivativeIndirectTrust0 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-derivativeIndirectTrust0 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 2023-12-03Direct0 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 2026-03-08Direct0 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 2027-03-07Direct0 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 2028-03-06Direct0 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 2029-03-06Direct0 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 2030-03-04Direct0 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 2031-03-03Direct0 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

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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 dateCompanyActivity / securityShares / unitsReported priceReported valueDetails
June 09, 2017 Filed Jun 14, 2017 20:18 UTC LITTELFUSE INC /DE LFUS · Entity 3514 OtherCommon Stock 5 $167.85 $839.25
Disclosure

SEC source: 0001140361-17-024981 · doc1.xml · nonDerivative · entry 1

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,701

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

Read SEC document
May 15, 2017 Filed May 16, 2017 17:40 UTC CMC Materials, Inc. CCMP · Entity 125533 SaleCommon Stock 30,000 $77.37 $2,321,067.00
Disclosure

SEC source: 0001127602-17-018376 · form4.xml · nonDerivative · entry 6

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Trust

Disclosed balance after: 58,125

F2 · kind: Represents shares held in trust for the benefit of Mrs. M. Noglows, Mr. Noglows' spouse, as to which Mr. Noglows has no investment or voting control. Accordingly, he is not deemed the beneficial owner of such shares for Section 16 purposes but wishes to continue to report these shares on a voluntary basis.

Read SEC document
May 12, 2017 Filed May 16, 2017 17:40 UTC CMC Materials, Inc. CCMP · Entity 125533 OtherCommon Stock 2,252 $0.00 $0.00
Disclosure

SEC source: 0001127602-17-018376 · form4.xml · nonDerivative · entry 5

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Trust

Disclosed balance after: 88,125

F2 · price: Represents shares held in trust for the benefit of Mrs. M. Noglows, Mr. Noglows' spouse, as to which Mr. Noglows has no investment or voting control. Accordingly, he is not deemed the beneficial owner of such shares for Section 16 purposes but wishes to continue to report these shares on a voluntary basis.

Read SEC document
May 12, 2017 Filed May 16, 2017 17:40 UTC CMC Materials, Inc. CCMP · Entity 125533 OtherCommon Stock 2,252 $0.00 $0.00
Disclosure

SEC source: 0001127602-17-018376 · form4.xml · nonDerivative · entry 4

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,004.291

F1 · price: Transfer of shares from Mr. Noglows to trust for the benefit of Mrs. M. Noglows, Mr. Noglows' spouse, as to which Mr. Noglows has no investment or voting control.

Read SEC document
May 12, 2017 Filed May 16, 2017 17:40 UTC CMC Materials, Inc. CCMP · Entity 125533 SaleCommon Stock 30,000 $76.56 $2,296,719.00
Disclosure

SEC source: 0001127602-17-018376 · form4.xml · nonDerivative · entry 3

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Trust

Disclosed balance after: 85,873

F2 · kind: Represents shares held in trust for the benefit of Mrs. M. Noglows, Mr. Noglows' spouse, as to which Mr. Noglows has no investment or voting control. Accordingly, he is not deemed the beneficial owner of such shares for Section 16 purposes but wishes to continue to report these shares on a voluntary basis.

Read SEC document
April 28, 2017 Filed May 1, 2017 18:33 UTC LITTELFUSE INC /DE LFUS · Entity 3514 GrantStock Option (right to buy) · Derivative 945 $0.00 Strike: $154.15 $0.00
Disclosure

SEC source: 0001140361-17-017551 · doc1.xml · derivative · entry 2

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 945

Underlying: Common Stock · 945 shares

Expires 2024-04-28

F3 · 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 28, 2017 Filed May 1, 2017 18:33 UTC LITTELFUSE INC /DE LFUS · Entity 3514 GrantCommon Stock 505 $0.00 $0.00
Disclosure

SEC source: 0001140361-17-017551 · doc1.xml · nonDerivative · entry 1

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,696

F1 · shares: Represents the grant of restricted stock units to the reporting person under the Amended and Restated Littelfuse Long-Term Incentive Plan. The grant vests 33% annually on the first three anniversaries of the grant date.

F2 · balance_after: Amount of securities beneficially owned includes a total of 7 shares acquired on March 15, 2017, pursuant to reporting person's reinvestment of dividends.

Read SEC document
March 07, 2017 Filed Mar 8, 2017 11:20 UTC CMC Materials, Inc. CCMP · Entity 125533 GrantStock Options (Right to Buy) · Derivative 4,811 $69.44 Strike: $69.44 $334,075.84
Disclosure

SEC source: 0001127602-17-010748 · form4.xml · derivative · entry 2

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,811

Underlying: Common Stock · 4,811 shares

Expires 2027-03-07

F2 · shares: Directors' Annual (2017) Non-Qualified Stock Option Grant pursuant to 2012 Omnibus Incentive Plan ("OIP); 100% will vest on 3/7/2018.

Read SEC document
March 07, 2017 Filed Mar 8, 2017 11:20 UTC CMC Materials, Inc. CCMP · Entity 125533 GrantCommon Stock 1,352 $0.00 $0.00
Disclosure

SEC source: 0001127602-17-010748 · form4.xml · nonDerivative · entry 1

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 89,180.291

F1 · shares: Directors' Annual (2017) Restricted Stock Unit Award pursuant to 2012 Omnibus Incentive Plan ("OIP); 100% will vest on 3/7/2018.

Read SEC document
February 17, 2017 Filed Feb 21, 2017 15:25 UTC LITTELFUSE INC /DE LFUS · Entity 3514 Exercise / conversionStock option (right to buy) · Derivative 1,724 $0.00 Strike: $42.13 $0.00
Disclosure

SEC source: 0001384707-17-000018 · primary_doc.xml · derivative · entry 3

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 1,724 shares

Expires 2017-04-30

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
February 17, 2017 Filed Feb 21, 2017 15:25 UTC LITTELFUSE INC /DE LFUS · Entity 3514 SaleCommon Stock 1,724 $163.00 $281,012.00
Disclosure

SEC source: 0001384707-17-000018 · primary_doc.xml · nonDerivative · entry 2

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,184

Read SEC document
February 17, 2017 Filed Feb 21, 2017 15:25 UTC LITTELFUSE INC /DE LFUS · Entity 3514 Exercise / conversionCommon Stock 1,724 $42.13 $72,632.12
Disclosure

SEC source: 0001384707-17-000018 · primary_doc.xml · nonDerivative · entry 1

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,908

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
February 08, 2017 Filed Feb 8, 2017 17:44 UTC CMC Materials, Inc. CCMP · Entity 125533 Exercise / conversionStock Options (Right to Buy) · Derivative 75,000 $0.00 Strike: $32.64 $0.00
Disclosure

SEC source: 0001127602-17-004661 · form4.xml · derivative · entry 3

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 75,000 shares

Expires 2022-12-03

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_price: 2012 (FY13) Non-Qualified Stock Option Grant Vesting Schedule: 25% 12/03/2013, 25% 12/03/2014, 25% 12/03/2015, 25% 12/03/2016.

Read SEC document
February 08, 2017 Filed Feb 8, 2017 17:44 UTC CMC Materials, Inc. CCMP · Entity 125533 SaleCommon Stock 75,000 $67.25 $5,043,900.00
Disclosure

SEC source: 0001127602-17-004661 · form4.xml · nonDerivative · entry 2

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,828.291

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February 08, 2017 Filed Feb 8, 2017 17:44 UTC CMC Materials, Inc. CCMP · Entity 125533 Exercise / conversionCommon Stock 75,000 $32.64 $2,448,000.00
Disclosure

SEC source: 0001127602-17-004661 · form4.xml · nonDerivative · entry 1

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 162,828.291

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.

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December 12, 2016 Filed Feb 7, 2017 21:49 UTC LITTELFUSE INC /DE LFUS · Entity 3514 OtherCommon Stock 5 $155.92 $779.60
Disclosure

SEC source: 0001384707-17-000009 · primary_doc.xml · nonDerivative · entry 1

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,184

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

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November 14, 2016 Filed Nov 16, 2016 16:02 UTC CMC Materials, Inc. CCMP · Entity 125533 Exercise / conversionStock Options (Right to Buy) · Derivative 95,744 $0.00 Strike: $27.94 $0.00
Disclosure

SEC source: 0001127602-16-067406 · form4.xml · derivative · entry 3

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 95,744 shares

Expires 2021-12-01

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: 2011 (FY12) Non-Qualified Stock Option Grant Vesting Schedule: 25% 12/1/2012, 25% 12/1/2013, 25% 12/1/2014, 25% 12/1/2015.

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November 14, 2016 Filed Nov 16, 2016 16:02 UTC CMC Materials, Inc. CCMP · Entity 125533 SaleCommon Stock 95,744 $57.56 $5,510,861.88
Disclosure

SEC source: 0001127602-16-067406 · form4.xml · nonDerivative · entry 2

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 87,828.291

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November 14, 2016 Filed Nov 16, 2016 16:02 UTC CMC Materials, Inc. CCMP · Entity 125533 Exercise / conversionCommon Stock 95,744 $27.94 $2,675,087.36
Disclosure

SEC source: 0001127602-16-067406 · form4.xml · nonDerivative · entry 1

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 183,572.291

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.

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September 14, 2016 Filed Sep 15, 2016 19:41 UTC LITTELFUSE INC /DE LFUS · Entity 3514 GrantCommon stock 7 $121.93 $853.48
Disclosure

SEC source: 0001209191-16-141564 · doc4.xml · nonDerivative · entry 1

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 18,179

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

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March 03, 2016 Filed May 16, 2017 17:40 UTC CMC Materials, Inc. CCMP · Entity 125533 OtherCommon Stock 56,924 $0.00 $0.00
Disclosure

SEC source: 0001127602-17-018376 · form4.xml · nonDerivative · entry 2

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Trust

Disclosed balance after: 115,873

F2 · price: Represents shares held in trust for the benefit of Mrs. M. Noglows, Mr. Noglows' spouse, as to which Mr. Noglows has no investment or voting control. Accordingly, he is not deemed the beneficial owner of such shares for Section 16 purposes but wishes to continue to report these shares on a voluntary basis.

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March 03, 2016 Filed May 16, 2017 17:40 UTC CMC Materials, Inc. CCMP · Entity 125533 OtherCommon Stock 56,924 $0.00 $0.00
Disclosure

SEC source: 0001127602-17-018376 · form4.xml · nonDerivative · entry 1

NOGLOWS WILLIAM P · CIK 0001201094 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,652.291

F1 · price: Transfer of shares from Mr. Noglows to trust for the benefit of Mrs. M. Noglows, Mr. Noglows' spouse, as to which Mr. Noglows has no investment or voting control.

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