ENTG

SEC source: 0001101302-26-000022 · wk-form4_1771354789.xml · nonDerivative · entry 1

Haris Clinton M. · CIK 0001483553 · SVP & President, APS Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 48,436.67

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.

SEC source: 0001101302-26-000021 · wk-form4_1771354755.xml · nonDerivative · entry 1

Sauer Michael · CIK 0001552780 · VP, Controller & CAO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,954.707

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.

SEC source: 0001101302-26-000020 · wk-form4_1771354746.xml · derivative · entry 10

Woodland Daniel D. · CIK 0001630039 · SVP & President, MS Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,667 shares

Expires 2030-12-03

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.

F6 · derivative.exercise_date: This option is fully vested.

SEC source: 0001101302-26-000020 · wk-form4_1771354746.xml · derivative · entry 9

Woodland Daniel D. · CIK 0001630039 · SVP & President, MS Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 12,656 shares

Expires 2029-12-05

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.

F6 · derivative.exercise_date: This option is fully vested.

SEC source: 0001101302-26-000020 · wk-form4_1771354746.xml · derivative · entry 8

Woodland Daniel D. · CIK 0001630039 · SVP & President, MS Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,151 shares

Expires 2028-12-06

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.

F6 · derivative.exercise_date: This option is fully vested.

SEC source: 0001101302-26-000020 · wk-form4_1771354746.xml · nonDerivative · entry 7

Woodland Daniel D. · CIK 0001630039 · SVP & President, MS Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,903.83

F5 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $130.46 to $130.66, 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.

SEC source: 0001101302-26-000020 · wk-form4_1771354746.xml · nonDerivative · entry 6

Woodland Daniel D. · CIK 0001630039 · SVP & President, MS Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 59,570.83

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.

SEC source: 0001101302-26-000020 · wk-form4_1771354746.xml · nonDerivative · entry 5

Woodland Daniel D. · CIK 0001630039 · SVP & President, MS Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,903.83

F4 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $130.70 to $130.87, 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.

SEC source: 0001101302-26-000020 · wk-form4_1771354746.xml · nonDerivative · entry 4

Woodland Daniel D. · CIK 0001630039 · SVP & President, MS Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 59,559.83

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.

SEC source: 0001101302-26-000020 · wk-form4_1771354746.xml · nonDerivative · entry 3

Woodland Daniel D. · CIK 0001630039 · SVP & President, MS Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,903.83

SEC source: 0001101302-26-000020 · wk-form4_1771354746.xml · nonDerivative · entry 2

Woodland Daniel D. · CIK 0001630039 · SVP & President, MS Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 52,054.83

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.

SEC source: 0001101302-26-000020 · wk-form4_1771354746.xml · nonDerivative · entry 1

Woodland Daniel D. · CIK 0001630039 · SVP & President, MS Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,903.83

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 121.09 shares acquired under the Entegris, Inc. Employee Stock Purchase Plan on December 31, 2025.

SEC source: 0001101302-26-000007 · wk-form4_1770236386.xml · derivative · entry 8

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 65,250 shares

Expires 2027-02-19

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.

F10 · price: Awarded pursuant to the Entegris, Inc. 2010 Stock Plan in consideration of services as an employee.

F9 · derivative.exercise_date: This option is fully vested.

SEC source: 0001101302-26-000007 · wk-form4_1770236386.xml · nonDerivative · entry 7

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 306,422

F2 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 10, 2025.

F8 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $120.73 to $121.21, 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.

SEC source: 0001101302-26-000007 · wk-form4_1770236386.xml · nonDerivative · entry 6

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 308,822

F2 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 10, 2025.

F7 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $119.73 to $120.72, 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.

SEC source: 0001101302-26-000007 · wk-form4_1770236386.xml · nonDerivative · entry 5

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 343,344

F2 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 10, 2025.

F6 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $118.68 to $119.66, 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.

SEC source: 0001101302-26-000007 · wk-form4_1770236386.xml · nonDerivative · entry 4

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 359,768

F2 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 10, 2025.

F5 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $117.67 to $118.66, 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.

SEC source: 0001101302-26-000007 · wk-form4_1770236386.xml · nonDerivative · entry 3

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 369,060

F2 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 10, 2025.

F4 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $116.60 to $117.58, 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.

SEC source: 0001101302-26-000007 · wk-form4_1770236386.xml · nonDerivative · entry 2

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 371,472

F2 · shares: These shares were sold pursuant to a Rule 10b5-1 Trading Plan established by the Reporting Person on February 10, 2025.

F3 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $115.50 to $116.42, 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.

SEC source: 0001101302-26-000007 · wk-form4_1770236386.xml · nonDerivative · entry 1

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 371,672

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: This amount reflects an additional 602 shares to correct an error in the number of shares initially withheld to satisfy tax obligations in connection with the award of shares reported on the Reporting Person's Form 4 filed on February 24, 2025.

SEC source: 0001101302-26-000005 · wk-form4_1769113925.xml · derivative · entry 3

Haris Clinton M. · CIK 0001483553 · SVP & President, APS Division

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,830

Underlying: Common Stock · 5,830 shares

Expires 2027-02-19

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. 2010 Stock Plan, as amended, in consideration of services as an employee.

F2 · derivative.exercise_date: The option is fully vested.

SEC source: 0001101302-26-000005 · wk-form4_1769113925.xml · nonDerivative · entry 2

Haris Clinton M. · CIK 0001483553 · SVP & President, APS Division

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 37,742.67

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

SEC source: 0001101302-26-000005 · wk-form4_1769113925.xml · nonDerivative · entry 1

Haris Clinton M. · CIK 0001483553 · SVP & President, APS Division

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 43,572.67

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.

SEC source: 0001101302-25-000109 · wk-form4_1765469343.xml · nonDerivative · entry 1

LEDERER JAMES P · CIK 0001434807 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,434

SEC source: 0001101302-25-000107 · wk-form4_1764780795.xml · derivative · entry 5

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 57,570 shares

Expires 2026-02-19

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.

F6 · price: Awarded pursuant to the Entegris, Inc. 2010 Stock Plan, as amended, in consideration for services as an employee.

F5 · derivative.exercise_date: The option is fully vested.

SEC source: 0001101302-25-000107 · wk-form4_1764780795.xml · nonDerivative · entry 4

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 305,820

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

F4 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $77.60 to $77.73, 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.

SEC source: 0001101302-25-000107 · wk-form4_1764780795.xml · nonDerivative · entry 3

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 306,165

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

F3 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $76.60 to $77.59, 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.

SEC source: 0001101302-25-000107 · wk-form4_1764780795.xml · nonDerivative · entry 2

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 347,030

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

F2 · price: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $75.60 to $76.59, 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.

SEC source: 0001101302-25-000107 · wk-form4_1764780795.xml · nonDerivative · entry 1

LOY BERTRAND · CIK 0001197452 · Director · Executive Chair

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 363,390

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.

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.

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.

SEC source: 0001101302-25-000105 · wk-form4_1762526511.xml · nonDerivative · entry 1

Colella Joseph · CIK 0001811061 · SVP and General Counsel

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 34,363.94

F1 · balance_after: These shares include 188.09 shares acquired under the Entegris, Inc. Employee Stock Purchase Plan on June 30, 2025.

SEC source: 0001101302-25-000087 · wk-form4_1755807895.xml · nonDerivative · entry 1

Reeder David · CIK 0001597133 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,457

F1 · shares: Represents restricted stock units granted to Mr. Reeder on April 23, 2025 in consideration for his services as an independent director. These restricted stock units, which are unvested, are being forfeited in conjunction with the awards granted to Mr. Reeder on August 18, 2025 in consideration for his new role as the Company's President and CEO.

SEC source: 0001101302-25-000085 · wk-form4_1755723965.xml · derivative · entry 2

Reeder David · CIK 0001597133 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 95,576

Underlying: Common Stock · 95,576 shares

Expires 2032-08-18

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 August 18, 2026 and thereafter on August 18, 2027, August 18, 2028 and August 18, 2029.

SEC source: 0001101302-25-000085 · wk-form4_1755723965.xml · nonDerivative · entry 1

Reeder David · CIK 0001597133 · Director · President & CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,354

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 August 18, 2026 and thereafter on August 18, 2027, August 18, 2028 and August 18, 2029.

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

SEC source: 0001101302-25-000083 · wk-form4_1755712121.xml · nonDerivative · entry 1

Woodland Daniel D. · CIK 0001630039 · SVP & President, MS Division

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,088.74

F1 · date: This Form 4 is being filed late due to an inadvertent administrative oversight.

F2 · shares: Shares withheld following settlement of restricted stock units to satisfy tax withholding obligations.

F3 · balance_after: These shares include 121.61 shares acquired under the Entegris, Inc. Employee Stock Purchase Plan on June 30, 2025.

SEC source: 0001101302-25-000081 · wk-form4_1755195745.xml · derivative · entry 3

Rice Susan G. · CIK 0001716139 · SVP, Global Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 8,858 shares

Expires 2026-02-19

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.

F2 · price: Awarded pursuant to the Entegris, Inc. 2010 Stock Plan in consideration of services as an employee.

F1 · derivative.exercise_date: The option is fully vested.

SEC source: 0001101302-25-000081 · wk-form4_1755195745.xml · nonDerivative · entry 2

Rice Susan G. · CIK 0001716139 · SVP, Global Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,912.004

SEC source: 0001101302-25-000081 · wk-form4_1755195745.xml · nonDerivative · entry 1

Rice Susan G. · CIK 0001716139 · SVP, Global Human Resources

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 65,770.004

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.

SEC source: 0001483553-25-000012 · wk-form4_1753123507.xml · nonDerivative · entry 1

Haris Clinton M. · CIK 0001483553 · SVP & President, APS Division

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 37,742.67

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

F2 · balance_after: These shares include 257.12 shares acquired under the Entegris, Inc. Employee Stock Purchase Plan on June 30, 2025.

SEC source: 0001846252-25-000004 · wk-form4_1749842592.xml · nonDerivative · entry 1

Clark Rodney · CIK 0001846252 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,500

F1 · shares: Represents shares transferred to the Reporting Person's former spouse pursuant to a divorce settlement. The securities owned by the former spouse are not beneficially owned by the Reporting Person.

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.

SEC source: 0001977397-25-000006 · wk-form4_1747674280.xml · nonDerivative · entry 1

LaGorga Linda · CIK 0001977397 · SVP, Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,920

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

SEC source: 0001158015-25-000006 · wk-form4_1745614706.xml · nonDerivative · entry 1

PUMA MARY G · CIK 0001158015 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,104

F1 · security: This Form 4 was originally filed on April 25, 2025, but was inadvertently filed under the incorrect reporting person (Entegris, Inc.) and was assigned accession number 0001101302-25-000048. This Form 4 is being filed to report the identified transactions for the correct reporting person (Mary Puma). The prior Form 4 report filed in error should be disregarded.

F2 · shares: These Restricted Stock Units vest in full on the earlier of (1) the first anniversary date of the grant, or (2) the date of the Company's 2026 Annual Meeting of Stockholders.

F3 · price: These shares were awarded on April 23, 2025 as Restricted Stock Units, payable solely in Common Stock, pursuant to the Entegris, Inc. 2020 Stock Plan, which provides for the award of Restricted Stock Units to independent directors in consideration for services as such.

SEC source: 0001434807-25-000002 · wk-form4_1745601276.xml · nonDerivative · entry 1

LEDERER JAMES P · CIK 0001434807 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 22,442

F1 · shares: These Restricted Stock Units vest in full on the earlier of (1) the first anniversary date of the grant, or (2) the date of the Company's 2026 Annual Meeting of Stockholders.

F2 · price: These shares were awarded on April 23, 2025 as Restricted Stock Units, payable solely in Common Stock, pursuant to the Entegris, Inc. 2020 Stock Plan, which provides for the award of Restricted Stock Units to independent directors in consideration for services as such.

SEC source: 0001846252-25-000002 · wk-form4_1745601226.xml · nonDerivative · entry 1

Clark Rodney · CIK 0001846252 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,490

F1 · shares: These Restricted Stock Units vest in full on the earlier of (1) the first anniversary date of the grant, or (2) the date of the Company's 2026 Annual Meeting of Stockholders.

F2 · price: These shares were awarded on April 23, 2025 as Restricted Stock Units, payable solely in Common Stock, pursuant to the Entegris, Inc. 2020 Stock Plan, which provides for the award of Restricted Stock Units to independent directors in consideration for services as such.

SEC source: 0001597133-25-000004 · wk-form4_1745601172.xml · nonDerivative · entry 1

Reeder David · CIK 0001597133 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,730

F1 · shares: These Restricted Stock Units vest in full on the earlier of (1) the first anniversary date of the grant, or (2) the date of the Company's 2026 Annual Meeting of Stockholders.

F2 · price: These shares were awarded on April 23, 2025 as Restricted Stock Units, payable solely in Common Stock, pursuant to the Entegris, Inc. 2020 Stock Plan, which provides for the award of Restricted Stock Units to independent directors in consideration for services as such.

SEC source: 0001217378-25-000002 · wk-form4_1745601122.xml · nonDerivative · entry 1

GENTILCORE JAMES · CIK 0001217378 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 18,507

F1 · shares: These Restricted Stock Units vest in full on the earlier of (1) the first anniversary date of the grant, or (2) the date of the Company's 2026 Annual Meeting of Stockholders.

F2 · price: These shares were awarded on April 23, 2025 as Restricted Stock Units, payable solely in Common Stock, pursuant to the Entegris, Inc. 2020 Stock Plan, which provides for the award of Restricted Stock Units to independent directors in consideration for services as such.

SEC source: 0001101302-25-000050 · wk-form4_1745601061.xml · nonDerivative · entry 1

SALEKI-GERHARDT AZITA · CIK 0001563545 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,971

F1 · shares: These Restricted Stock Units vest in full on the earlier of (1) the first anniversary date of the grant, or (2) the date of the Company's 2026 Annual Meeting of Stockholders.

F2 · price: These shares were awarded on April 23, 2025 as Restricted Stock Units, payable solely in Common Stock, pursuant to the Entegris, Inc. 2020 Stock Plan, which provides for the award of Restricted Stock Units to independent directors in consideration for services as such.

SEC source: 0001101302-25-000048 · wk-form4_1745600958.xml · nonDerivative · entry 1

ENTEGRIS INC · CIK 0001101302 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,104

F1 · shares: These Restricted Stock Units vest in full on the earlier of (1) the first anniversary date of the grant, or (2) the date of the Company's 2026 Annual Meeting of Stockholders.

F2 · price: These shares were awarded on April 23, 2025 as Restricted Stock Units, payable solely in Common Stock, pursuant to the Entegris, Inc. 2020 Stock Plan, which provides for the award of Restricted Stock Units to independent directors in consideration for services as such.