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Blachier Olivier

Disclosed activity across 1 company

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23153
SEC CIK
0001891661

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Reported relationships

Latest disclosed role at each company.

CompanyLast reported asReport datePublished
ENTEGRIS INCENTG · Entity 3271President, Materials SolutionsAugust 14, 2026August 17, 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.

ENTEGRIS INC

Report date August 14, 2026 · Filed August 17, 2026

Security / awardOwnership accountDisclosed shares / unitsDisclosure context
Common StockSEC Table I · non-derivativeDirect36,996.76 Reported balance After 2026-08-14 transaction · row 1 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 1 · 2026-08-14 · Exercise / conversion · Acquired 2,000 · Balance 36,996.76

F1: These shares include 99.81 shares acquired by the Reporting Person under the Entegris, Inc. Employee Stock Purchase Plan on June 30, 2026.

Common StockSEC Table I · non-derivativeDirect34,996.76 Reported balance After 2026-08-14 transaction · row 2 Account or security details depend on footnotes; rows are not merged.
1 source row

Row 2 · 2026-08-14 · Sale · Disposed 2,000 · Balance 34,996.76

F2: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on May 14, 2026.

Employee Stock Option (Right to Buy)SEC Table II · derivative / convertible security · Conversion / exercise price $80.71 · Expires 2030-02-19Direct3,972 Reported balance After 2026-08-14 transaction · row 3 Instrument identity requires review; Table II rows are not merged.
1 source row

Row 3 · 2026-08-14 · Exercise / conversion · Disposed 2,000 · Balance 3,972

F4: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

F3: This option vests in four equal annual installments. The first three installments became exercisable on February 19, 2024, February 19, 2025, and February 19, 2026, respectively. The final installment will become exercisable on February 19, 2027.

Filing footnotes · ownership attribution and instrument terms

F1: These shares include 99.81 shares acquired by the Reporting Person under the Entegris, Inc. Employee Stock Purchase Plan on June 30, 2026.

F2: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on May 14, 2026.

F3: This option vests in four equal annual installments. The first three installments became exercisable on February 19, 2024, February 19, 2025, and February 19, 2026, respectively. The final installment will become exercisable on February 19, 2027.

F4: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

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
August 14, 2026 Filed Aug 17, 2026 16:00 UTC ENTEGRIS INC ENTG · Entity 3271 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 2,000 $0.00 Strike: $80.71 $0.00
Disclosure

SEC source: 0001891661-26-000002 · wk-form4_1786982437.xml · derivative · entry 3

Blachier Olivier · CIK 0001891661 · President, Materials Solutions

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 3,972

Underlying: Common Stock · 2,000 shares

Expires 2030-02-19

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 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

F3 · derivative.exercise_date: This option vests in four equal annual installments. The first three installments became exercisable on February 19, 2024, February 19, 2025, and February 19, 2026, respectively. The final installment will become exercisable on February 19, 2027.

Read SEC document
August 14, 2026 Filed Aug 17, 2026 16:00 UTC ENTEGRIS INC ENTG · Entity 3271 SaleCommon Stock 2,000 $160.66 $321,320.00
Disclosure

SEC source: 0001891661-26-000002 · wk-form4_1786982437.xml · nonDerivative · entry 2

Blachier Olivier · CIK 0001891661 · President, Materials Solutions

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 34,996.76

F2 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on May 14, 2026.

Read SEC document
August 14, 2026 Filed Aug 17, 2026 16:00 UTC ENTEGRIS INC ENTG · Entity 3271 Exercise / conversionCommon Stock 2,000 $80.71 $161,420.00
Disclosure

SEC source: 0001891661-26-000002 · wk-form4_1786982437.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · President, Materials Solutions

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 36,996.76

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: These shares include 99.81 shares acquired by the Reporting Person under the Entegris, Inc. Employee Stock Purchase Plan on June 30, 2026.

Read SEC document
May 14, 2026 Filed May 18, 2026 18:11 UTC ENTEGRIS INC ENTG · Entity 3271 Exercise / conversionEmployee Stock Option (Right to Buy) · Derivative 2,000 $0.00 Strike: $80.71 $0.00
Disclosure

SEC source: 0001101302-26-000122 · wk-form4_1779127910.xml · derivative · entry 3

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,972

Underlying: Common Stock · 2,000 shares

Expires 2030-02-19

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 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

F2 · derivative.exercise_date: This option vests in four equal annual installments. The first three installments became exercisable on February 19, 2024, February 19, 2025, and February 19, 2026, respectively. The final installment will become exercisable on February 19, 2027.

Read SEC document
May 14, 2026 Filed May 18, 2026 18:11 UTC ENTEGRIS INC ENTG · Entity 3271 SaleCommon Stock 2,000 $140.04 $280,080.00
Disclosure

SEC source: 0001101302-26-000122 · wk-form4_1779127910.xml · nonDerivative · entry 2

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,896.95

F1 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $140.00 to $140.18, inclusive. The reporting person undertakes to provide Entegris, Inc., any shareholder of Entegris, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the ranges set forth in this footnote.

Read SEC document
May 14, 2026 Filed May 18, 2026 18:11 UTC ENTEGRIS INC ENTG · Entity 3271 Exercise / conversionCommon Stock 2,000 $80.71 $161,420.00
Disclosure

SEC source: 0001101302-26-000122 · wk-form4_1779127910.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,896.95

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
April 07, 2026 Filed Apr 8, 2026 20:46 UTC ENTEGRIS INC ENTG · Entity 3271 SaleCommon Stock 275 $115.57 $31,781.75
Disclosure

SEC source: 0001101302-26-000093 · wk-form4_1775681161.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 34,896.95

F1 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 21, 2025.

Read SEC document
April 05, 2026 Filed Apr 6, 2026 19:57 UTC ENTEGRIS INC ENTG · Entity 3271 Tax withholdingCommon Stock 643 $116.40 $74,845.20
Disclosure

SEC source: 0001101302-26-000087 · wk-form4_1775505464.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,171.95

F1 · shares: Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations.

F2 · price: Because the shares vested on Sunday, April 5, the price stated above is the closing price per share of Entegris common stock on Thursday, April 2nd, the last trading day immediately prior to the vesting date.

Read SEC document
April 01, 2026 Filed Apr 2, 2026 20:22 UTC ENTEGRIS INC ENTG · Entity 3271 GrantCommon Stock 6,318 $0.00 $0.00
Disclosure

SEC source: 0001101302-26-000071 · wk-form4_1775161372.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 35,814.95

F1 · shares: Each restricted stock unit ("RSU") represents a contingent right to receive one share of common stock. The RSUs vest as follows: 25% of the RSUs vest on April 5, 2027, and the remaining 75% of the RSUs vest in equal quarterly installments over the three year period thereafter.

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

Read SEC document
February 20, 2026 Filed Feb 23, 2026 23:16 UTC ENTEGRIS INC ENTG · Entity 3271 SaleCommon Stock 394 $131.49 $51,807.06
Disclosure

SEC source: 0001101302-26-000041 · wk-form4_1771888581.xml · nonDerivative · entry 6

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 29,496.95

F5 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 21, 2025.

Read SEC document
February 20, 2026 Filed Feb 23, 2026 23:16 UTC ENTEGRIS INC ENTG · Entity 3271 SaleCommon Stock 1,064 $131.49 $139,905.36
Disclosure

SEC source: 0001101302-26-000041 · wk-form4_1771888581.xml · nonDerivative · entry 5

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 29,890.95

F5 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 21, 2025.

Read SEC document
February 20, 2026 Filed Feb 23, 2026 23:16 UTC ENTEGRIS INC ENTG · Entity 3271 SaleCommon Stock 206 $131.49 $27,086.94
Disclosure

SEC source: 0001101302-26-000041 · wk-form4_1771888581.xml · nonDerivative · entry 4

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 30,954.95

F5 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 21, 2025.

Read SEC document
February 19, 2026 Filed Feb 23, 2026 23:16 UTC ENTEGRIS INC ENTG · Entity 3271 Tax withholdingCommon Stock 500 $132.67 $66,335.00
Disclosure

SEC source: 0001101302-26-000041 · wk-form4_1771888581.xml · nonDerivative · entry 3

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 31,160.95

F4 · shares: Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations.

Read SEC document
February 19, 2026 Filed Feb 23, 2026 23:16 UTC ENTEGRIS INC ENTG · Entity 3271 Tax withholdingCommon Stock 884 $132.67 $117,280.28
Disclosure

SEC source: 0001101302-26-000041 · wk-form4_1771888581.xml · nonDerivative · entry 2

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 31,660.95

F3 · shares: Shares automatically withheld upon settlement of performance share units to satisfy tax withholding obligations.

Read SEC document
February 19, 2026 Filed Feb 23, 2026 23:16 UTC ENTEGRIS INC ENTG · Entity 3271 GrantCommon Stock 3,011 $0.00 $0.00
Disclosure

SEC source: 0001101302-26-000041 · wk-form4_1771888581.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,544.95

F1 · shares: Awarded in connection with the settlement of performance share units for the 2023-2025 performance cycle.

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

Read SEC document
February 12, 2026 Filed Feb 17, 2026 19:00 UTC ENTEGRIS INC ENTG · Entity 3271 GrantCommon Stock 15,278 $0.00 $0.00
Disclosure

SEC source: 0001101302-26-000024 · wk-form4_1771354812.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,533.95

F1 · shares: These shares are restricted stock units with restrictions that lapse over a two-year period with respect to 50% of these shares per year, on February 19, 2027 and February 19, 2028.

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

F3 · balance_after: These shares include 131.89 shares acquired under the Entegris, Inc. Employee Stock Purchase Plan on December 31, 2025.

Read SEC document
November 17, 2025 Filed Nov 18, 2025 19:54 UTC ENTEGRIS INC ENTG · Entity 3271 SaleCommon Stock 488 $77.43 $37,785.84
Disclosure

SEC source: 0001891661-25-000011 · wk-form4_1763495644.xml · nonDerivative · entry 2

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,124.06

F3 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 21, 2025.

Read SEC document
November 14, 2025 Filed Nov 18, 2025 19:54 UTC ENTEGRIS INC ENTG · Entity 3271 Tax withholdingCommon Stock 445 $78.28 $34,834.60
Disclosure

SEC source: 0001891661-25-000011 · wk-form4_1763495644.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,612.06

F1 · shares: Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations.

F2 · balance_after: These shares include 133.75 shares acquired under the Entegris, Inc. Employee Stock Purchase Plan on June 30, 2025.

Read SEC document
May 22, 2025 Filed May 23, 2025 15:36 UTC ENTEGRIS INC ENTG · Entity 3271 SaleCommon Stock 275 $72.22 $19,860.50
Disclosure

SEC source: 0001891661-25-000008 · wk-form4_1748014587.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,923.31

F1 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 21, 2025.

Read SEC document
April 05, 2025 Filed Apr 8, 2025 20:12 UTC ENTEGRIS INC ENTG · Entity 3271 Tax withholdingCommon Stock 229 $65.39 $14,974.31
Disclosure

SEC source: 0001891661-25-000006 · wk-form4_1744143168.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,198.31

F1 · shares: Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations.

F2 · price: Because the shares vested on Saturday, April 5, the price stated above is the closing price per share of Entegris common stock on Friday, April 4th, the last trading day immediately prior to the vesting date.

Read SEC document
April 01, 2025 Filed Apr 3, 2025 19:50 UTC ENTEGRIS INC ENTG · Entity 3271 GrantEmployee Stock Option (Right to Buy) · Derivative 8,100 $0.00 Strike: $86.20 $0.00
Disclosure

SEC source: 0001891661-25-000004 · wk-form4_1743709824.xml · derivative · entry 2

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,100

Underlying: Common Stock · 8,100 shares

Expires 2032-04-01

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

F3 · derivative.exercise_date: The option vests in four equal annual installments beginning on April 5, 2026 and thereafter on April 5, 2027, April 5, 2028 and April 5, 2029.

Read SEC document
April 01, 2025 Filed Apr 3, 2025 19:50 UTC ENTEGRIS INC ENTG · Entity 3271 GrantCommon Stock 4,524 $0.00 $0.00
Disclosure

SEC source: 0001891661-25-000004 · wk-form4_1743709824.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,427.31

F1 · shares: These shares are restricted stock units with restrictions that lapse over a four-year period with respect to 25% of these shares per year beginning April 5, 2026 and thereafter on April 5, 2027, April 5, 2028 and April 5, 2029.

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

Read SEC document
February 21, 2025 Filed Feb 25, 2025 00:35 UTC ENTEGRIS INC ENTG · Entity 3271 SaleCommon Stock 984 $108.00 $106,272.00
Disclosure

SEC source: 0001891661-25-000002 · wk-form4_1740443713.xml · nonDerivative · entry 2

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 10,903.31

F3 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 16, 2024.

Read SEC document
February 20, 2025 Filed Feb 22, 2025 01:23 UTC ENTEGRIS INC ENTG · Entity 3271 Tax withholdingCommon Stock 319 $107.99 $34,448.81
Disclosure

SEC source: 0001101302-25-000024 · wk-form4_1740187430.xml · nonDerivative · entry 2

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,281.61

F3 · shares: Shares automatically withheld upon settlement of performance share units to satisfy tax withholding obligations.

Read SEC document
February 20, 2025 Filed Feb 25, 2025 00:35 UTC ENTEGRIS INC ENTG · Entity 3271 Tax withholdingCommon Stock 500 $107.99 $53,995.00
Disclosure

SEC source: 0001891661-25-000002 · wk-form4_1740443713.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,887.31

F1 · shares: Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations.

F2 · balance_after: These shares include 105.70 shares acquired under the Entegris, Inc. Employee Stock Purchase Plan on December 31, 2024.

Read SEC document
February 19, 2025 Filed Feb 22, 2025 01:23 UTC ENTEGRIS INC ENTG · Entity 3271 GrantCommon Stock 1,086 $0.00 $0.00
Disclosure

SEC source: 0001101302-25-000024 · wk-form4_1740187430.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,600.61

F1 · shares: Awarded in connection with the settlement of performance share units for the 2022-2024 performance cycle.

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

Read SEC document
November 18, 2024 Filed Nov 19, 2024 19:47 UTC ENTEGRIS INC ENTG · Entity 3271 SaleCommon Stock 502 $97.32 $48,854.64
Disclosure

SEC source: 0001891661-24-000008 · wk-form4_1732045627.xml · nonDerivative · entry 2

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,514.61

F3 · kind: These shares were sold pursuant to a Rule 10b-5 Trading Plan established by the Reporting Person on February 16, 2024.

Read SEC document
November 15, 2024 Filed Nov 19, 2024 19:47 UTC ENTEGRIS INC ENTG · Entity 3271 Tax withholdingCommon Stock 417 $97.67 $40,728.39
Disclosure

SEC source: 0001891661-24-000008 · wk-form4_1732045627.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,016.61

F1 · kind: Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations.

F2 · balance_after: These shares include 77.85 shares acquired under the Entegris, Inc. Employee Stock Purchase Plan on June 28, 2024.

Read SEC document
May 16, 2024 Filed May 17, 2024 19:03 UTC ENTEGRIS INC ENTG · Entity 3271 SaleCommon Stock 1,986 $133.84 $265,806.24
Disclosure

SEC source: 0001891661-24-000006 · wk-form4_1715972625.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,355.76

F1 · kind: These shares were sold pursuant to a Rule 10b5-1 Trading Plan previously established by the Reporting Person on February 16, 2024.

Read SEC document
April 01, 2024 Filed Apr 3, 2024 19:11 UTC ENTEGRIS INC ENTG · Entity 3271 GrantEmployee Stock Option (Right to Buy) · Derivative 5,372 $0.00 Strike: $140.62 $0.00
Disclosure

SEC source: 0001891661-24-000004 · wk-form4_1712171497.xml · derivative · entry 2

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,372

Underlying: Common Stock · 5,372 shares

Expires 2031-04-01

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

F3 · derivative.exercise_date: The option vests in four equal annual installments beginning on April 5, 2025 and thereafter on April 5, 2026, April 5, 2027 and April 5, 2028.

Read SEC document
April 01, 2024 Filed Apr 3, 2024 19:11 UTC ENTEGRIS INC ENTG · Entity 3271 GrantCommon Stock 3,112 $0.00 $0.00
Disclosure

SEC source: 0001891661-24-000004 · wk-form4_1712171497.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,341.76

F1 · shares: These shares are restricted stock units with restrictions that lapse over a four-year period with respect to 25% of these shares per year beginning April 5, 2025 and thereafter on April 5, 2026, April 5, 2027 and April 5, 2028.

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

Read SEC document
February 16, 2024 Filed Feb 21, 2024 21:55 UTC ENTEGRIS INC ENTG · Entity 3271 Tax withholdingCommon Stock 500 $136.81 $68,405.00
Disclosure

SEC source: 0001891661-24-000002 · wk-form4_1708552420.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP, Chief Strategy Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,229.76

F1 · shares: Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations.

F2 · balance_after: These shares include 91.95 shares acquired under the Entegris, Inc. Employee Stock Purchase Plan on December 31, 2023.

Read SEC document
November 15, 2023 Filed Nov 17, 2023 21:13 UTC ENTEGRIS INC ENTG · Entity 3271 Tax withholdingCommon Stock 417 $102.84 $42,884.28
Disclosure

SEC source: 0001891661-23-000006 · wk-form4_1700255573.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP Business-New Markets Dev.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,729.76

F1 · kind: Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations.

F2 · balance_after: These shares include 77.97 shares acquired under the Entegris, Inc. Employee Stock Purchase Plan on June 30, 2023.

Read SEC document
February 17, 2023 Filed Feb 21, 2023 21:08 UTC ENTEGRIS INC ENTG · Entity 3271 Tax withholdingCommon Stock 172 $85.48 $14,702.56
Disclosure

SEC source: 0001891661-23-000004 · wf-form4_167701366051892.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP Business-New Markets Dev.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,068.79

F1 · shares: Shares automatically withheld upon settlement of restricted stock units to satisfy tax withholding obligations.

Read SEC document
January 31, 2023 Filed Feb 2, 2023 21:20 UTC ENTEGRIS INC ENTG · Entity 3271 GrantEmployee Stock Option (Right to Buy) · Derivative 7,972 $0.00 Strike: $80.71 $0.00
Disclosure

SEC source: 0001891661-23-000002 · wf-form4_167537283164752.xml · derivative · entry 2

Blachier Olivier · CIK 0001891661 · SVP Business-New Markets Dev.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,972

Underlying: Common Stock · 7,972 shares

Expires 2030-02-19

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

F4 · derivative.exercise_date: The option vests in four equal annual installments beginning on February 19, 2024 and thereafter on February 19, 2025, February 19, 2026 and February 19, 2027.

Read SEC document
January 31, 2023 Filed Feb 2, 2023 21:20 UTC ENTEGRIS INC ENTG · Entity 3271 GrantCommon Stock 4,460 $0.00 $0.00
Disclosure

SEC source: 0001891661-23-000002 · wf-form4_167537283164752.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP Business-New Markets Dev.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,240.79

F1 · shares: These shares are restricted stock units with restrictions that lapse over a four-year period with respect to 25% of these shares per year beginning February 19, 2024 and thereafter on February 19, 2025, February 19, 2026 and February 19, 2027.

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

F3 · balance_after: These shares include an aggregate of 185.79 shares acquired under the Entegris, Inc. Employee Stock Purchase Plan during the fiscal year ended December 31, 2022.

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November 15, 2022 Filed Nov 17, 2022 20:56 UTC ENTEGRIS INC ENTG · Entity 3271 Tax withholdingCommon Stock 417 $80.29 $33,480.93
Disclosure

SEC source: 0001891661-22-000004 · wf-form4_166871860377217.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP Business-New Markets Dev.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,595

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February 01, 2022 Filed Feb 3, 2022 21:22 UTC ENTEGRIS INC ENTG · Entity 3271 GrantEmployee Stock Option (Right to Buy) · Derivative 5,188 $0.00 Strike: $128.44 $0.00
Disclosure

SEC source: 0001891661-22-000002 · wf-form4_164392335500066.xml · derivative · entry 2

Blachier Olivier · CIK 0001891661 · SVP Business-New Markets Dev.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,188

Underlying: Common Stock · 5,188 shares

Expires 2029-02-19

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

F3 · derivative.exercise_date: The option vests in four equal annual installments beginning on February 19, 2023 and thereafter on February 19, 2024, February 19, 2025 and February 19, 2026.

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February 01, 2022 Filed Feb 3, 2022 21:22 UTC ENTEGRIS INC ENTG · Entity 3271 GrantCommon Stock 2,332 $0.00 $0.00
Disclosure

SEC source: 0001891661-22-000002 · wf-form4_164392335500066.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP Business-New Markets Dev.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,012

F1 · shares: These shares are restricted stock units with restrictions that lapse over a four-year period with respect to 25% of these shares per year, beginning February 19, 2023 and thereafter on February 19, 2024, February 19, 2025 and February 19, 2026.

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

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October 31, 2021 Filed Nov 2, 2021 20:36 UTC ENTEGRIS INC ENTG · Entity 3271 GrantNo Securities Beneficially Owned 5,680 $0.00 $0.00
Disclosure

SEC source: 0001891661-21-000004 · wf-form4_163588534816801.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP Business-New Markets Dev.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,680

F1 · shares: These shares are restricted stock units with restrictions that lapse over a four-year period with respect to 25% of these shares per year, starting on November 15, 2022 and thereafter on November 15, 2023, November 15, 2024 and November 15, 2025.

F2 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

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October 31, 2021 Filed Nov 3, 2021 13:06 UTC Amendment ENTEGRIS INC ENTG · Entity 3271 GrantCommon Stock 5,680 $0.00 $0.00
Disclosure

SEC source: 0001891661-21-000006 · wf-form4a_163594477405657.xml · nonDerivative · entry 1

Blachier Olivier · CIK 0001891661 · SVP Business-New Markets Dev.

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,680

F1 · security: This Form 4/A is being filed to correctly identify the securities awarded to the Reporting Person as common stock.

F2 · shares: These shares are restricted stock units with restrictions that lapse over a four-year period with respect to 25% of these shares per year, starting on November 15, 2022 and thereafter on November 15, 2023, November 15, 2024 and November 15, 2025.

F3 · price: Awarded pursuant to the Entegris, Inc. 2020 Stock Plan in consideration of services as an employee.

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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.