Wong Lester A

SEC source: 0001529306-26-000007 · wk-form4_1791898574.xml · derivative · entry 2

Wong Lester A · CIK 0001529306 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 19,225 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded October 11, 2023, achieved a 148% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three-year period. The payout was certified, and shares issued on October 11, 2026. Each PSU is convertible to one share of common stock.

F1 · derivative.exercise_date: Performance Share Units (PSUs) awarded October 11, 2023, achieved a 148% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three-year period. The payout was certified, and shares issued on October 11, 2026. Each PSU is convertible to one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded October 11, 2023, achieved a 148% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three-year period. The payout was certified, and shares issued on October 11, 2026. Each PSU is convertible to one share of common stock.

SEC source: 0001529306-26-000007 · wk-form4_1791898574.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 76,006

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 · shares: Performance Share Units (PSUs) awarded October 11, 2023, achieved a 148% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three-year period. The payout was certified, and shares issued on October 11, 2026. Each PSU is convertible to one share of common stock.

SEC source: 0001529306-26-000005 · wk-form4_1788397699.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,781

F1 · shares: Grant under the 2021 Omnibus Incentive Plan. Shares will vest on September 1, 2027.

SEC source: 0001529306-26-000003 · wk-form4_1782134995.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Interim CEO and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 50,743

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $121.2350 to $122.5100, inclusive.

SEC source: 0001529306-25-000009 · wk-form4_1764807148.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Interim CEO and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 110,743

F1 · shares: Restricted stock unit awards in connection with the Reporting Person's appointment as Interim CEO. The shares granted vest on the anniversary date of grant.

SEC source: 0001529306-25-000007 · wk-form4_1764028827.xml · derivative · entry 2

Wong Lester A · CIK 0001529306 · Interim CEO and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 356 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded October 14, 2022, achieved an 8% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified, and the shares issued on November 20, 2025. Each PSU is convertible into one share of common stock.

F1 · derivative.exercise_date: Performance Share Units (PSUs) awarded October 14, 2022, achieved an 8% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified, and the shares issued on November 20, 2025. Each PSU is convertible into one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded October 14, 2022, achieved an 8% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified, and the shares issued on November 20, 2025. Each PSU is convertible into one share of common stock.

SEC source: 0001529306-25-000007 · wk-form4_1764028827.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Interim CEO and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,405

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 · shares: Performance Share Units (PSUs) awarded October 14, 2022, achieved an 8% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified, and the shares issued on November 20, 2025. Each PSU is convertible into one share of common stock.

SEC source: 0001529306-25-000005 · wk-form4_1760554116.xml · derivative · entry 3

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 10,951 shares

Expires not disclosed

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 · derivative.exercise_price: Performance Share Units (PSUs) awarded October 14, 2022, achieved a 82% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three-year period. The pay-out was certified, and shares issued on October 14, 2025. Each PSU is convertible to one share of common stock.

F2 · derivative.exercise_date: Performance Share Units (PSUs) awarded October 14, 2022, achieved a 82% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three-year period. The pay-out was certified, and shares issued on October 14, 2025. Each PSU is convertible to one share of common stock.

F2 · derivative.expiration_date: Performance Share Units (PSUs) awarded October 14, 2022, achieved a 82% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three-year period. The pay-out was certified, and shares issued on October 14, 2025. Each PSU is convertible to one share of common stock.

SEC source: 0001529306-25-000005 · wk-form4_1760554116.xml · nonDerivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 100,049

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 · shares: Performance Share Units (PSUs) awarded October 14, 2022, achieved a 82% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three-year period. The pay-out was certified, and shares issued on October 14, 2025. Each PSU is convertible to one share of common stock.

SEC source: 0001529306-25-000005 · wk-form4_1760554116.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 89,098

F1 · shares: One-third of the shares granted vest on each anniversary of the date of grant.

SEC source: 0000056978-24-000163 · wk-form4_1732320838.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 79,636

F1 · shares: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $45.94 to $46.85, inclusive.

SEC source: 0000056978-24-000158 · wk-form4_1731974534.xml · derivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 260 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded October 15, 2021, achieved an 8% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified, and the shares issued on November 14, 2024. Each PSU is convertible into one share of common stock.

F1 · derivative.exercise_date: Performance Share Units (PSUs) awarded October 15, 2021, achieved an 8% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified, and the shares issued on November 14, 2024. Each PSU is convertible into one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded October 15, 2021, achieved an 8% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified, and the shares issued on November 14, 2024. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-24-000158 · wk-form4_1731974534.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 139,636

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 · shares: Performance Share Units (PSUs) awarded October 15, 2021, achieved an 8% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified, and the shares issued on November 14, 2024. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-24-000133 · wk-form4_1729294546.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 139,376

F1 · shares: One-third of the shares granted vest on each anniversary of the date of grant.

SEC source: 0000056978-24-000123 · wk-form4_1729208854.xml · derivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 9,264 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded October 15, 2021 achieved a 95% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three year period. The pay-out was certified, and shares issued on October 15, 2024. Each PSU is convertible to one share of common stock.

F1 · derivative.exercise_date: Performance Share Units (PSUs) awarded October 15, 2021 achieved a 95% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three year period. The pay-out was certified, and shares issued on October 15, 2024. Each PSU is convertible to one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded October 15, 2021 achieved a 95% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three year period. The pay-out was certified, and shares issued on October 15, 2024. Each PSU is convertible to one share of common stock.

SEC source: 0000056978-24-000123 · wk-form4_1729208854.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 130,966

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 · shares: Performance Share Units (PSUs) awarded October 15, 2021 achieved a 95% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three year period. The pay-out was certified, and shares issued on October 15, 2024. Each PSU is convertible to one share of common stock.

SEC source: 0000056978-23-000190 · wk-form4_1702685860.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 121,702

F1 · price: This transaction was executed in multiple trades at prices ranging from $55.28 to $55.74. The price reported above reflects the weighted average price.

SEC source: 0000056978-23-000182 · wk-form4_1700525721.xml · derivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 10,974 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded October 7, 2020 achieved a 200% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified and the shares issued on November 16, 2023. Each PSU is convertible into one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded October 7, 2020 achieved a 200% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified and the shares issued on November 16, 2023. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-23-000182 · wk-form4_1700525721.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 176,702

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 · shares: Performance Share Units (PSUs) awarded October 7, 2020 achieved a 200% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified and the shares issued on November 16, 2023. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-23-000149 · wk-form4_1697238885.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 165,728

F1 · shares: One-third of the shares granted vest on each anniversary of the date of grant.

SEC source: 0000056978-23-000133 · wk-form4_1696980940.xml · derivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 27,323 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded October 7, 2020 achieved a 166% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three year period. The pay-out was certified, and shares issued on October 7, 2023. Each PSU is convertible to one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded October 7, 2020 achieved a 166% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three year period. The pay-out was certified, and shares issued on October 7, 2023. Each PSU is convertible to one share of common stock.

SEC source: 0000056978-23-000133 · wk-form4_1696980940.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 157,069

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 · shares: Performance Share Units (PSUs) awarded October 7, 2020 achieved a 166% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with the relative TSR measured over a three year period. The pay-out was certified, and shares issued on October 7, 2023. Each PSU is convertible to one share of common stock.

SEC source: 0000056978-23-000035 · wf-form4_167909429295924.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,746

F1 · price: This transaction was executed in multiple trades at prices ranging from $51.10 to $51.84. The price reported above reflects the weighted average price.

SEC source: 0000056978-22-000151 · wf-form4_166907814461362.xml · derivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 10,694 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded October 10, 2019 achieved a 200% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified and the shares issued on November 17, 2022. Each PSU is convertible into one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded October 10, 2019 achieved a 200% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified and the shares issued on November 17, 2022. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-22-000151 · wf-form4_166907814461362.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 169,746

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 · shares: Performance Share Units (PSUs) awarded October 10, 2019 achieved a 200% payout based on the greater of absolute revenue growth or relative performance against each direct competitor for each year of the three-year performance period. The payout was certified and the shares issued on November 17, 2022. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-22-000122 · wf-form4_166613526682123.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 159,052

F1 · shares: One-third of the shares granted vest on each anniversary of the date of grant.

SEC source: 0000056978-22-000104 · wf-form4_166561652363824.xml · derivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 22,137 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded October 10, 2019, achieved a 138% pay-out based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with relative TSR measured over a three-year period. The pay-out was certified, and shares issued on October 10, 2022. Each PSU is convertible to one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded October 10, 2019, achieved a 138% pay-out based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with relative TSR measured over a three-year period. The pay-out was certified, and shares issued on October 10, 2022. Each PSU is convertible to one share of common stock.

SEC source: 0000056978-22-000104 · wf-form4_166561652363824.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 153,117

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 · shares: Performance Share Units (PSUs) awarded October 10, 2019, achieved a 138% pay-out based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of the Performance Period with relative TSR measured over a three-year period. The pay-out was certified, and shares issued on October 10, 2022. Each PSU is convertible to one share of common stock.

SEC source: 0000056978-22-000002 · wf-form4_164142749512647.xml · derivative · entry 4

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,736 shares

Expires not disclosed

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 · derivative.exercise_date: Performance Share Units (PSUs) awarded January 2, 2019 achieved a 200% payout based on the greater of absolute revenue growth or relative revenue growth against two performance peers for each year of the three-year performance period. The payout was certified and the shares issued on January 3, 2022. Each PSU is convertible into one share of common stock.

F2 · derivative.expiration_date: Performance Share Units (PSUs) awarded January 2, 2019 achieved a 200% payout based on the greater of absolute revenue growth or relative revenue growth against two performance peers for each year of the three-year performance period. The payout was certified and the shares issued on January 3, 2022. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-22-000002 · wf-form4_164142749512647.xml · derivative · entry 3

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 10,371 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded January 2, 2019 achieved a 146% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of Performance Period with relative TSR measured over a three year period. The payout was certified and shares issued on January 3, 2022. Each PSU is convertible into one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded January 2, 2019 achieved a 146% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of Performance Period with relative TSR measured over a three year period. The payout was certified and shares issued on January 3, 2022. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-22-000002 · wf-form4_164142749512647.xml · nonDerivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 130,980

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 · shares: Performance Share Units (PSUs) awarded January 2, 2019 achieved a 200% payout based on the greater of absolute revenue growth or relative revenue growth against two performance peers for each year of the three-year performance period. The payout was certified and the shares issued on January 3, 2022. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-22-000002 · wf-form4_164142749512647.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 126,244

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 · shares: Performance Share Units (PSUs) awarded January 2, 2019 achieved a 146% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of Performance Period with relative TSR measured over a three year period. The payout was certified and shares issued on January 3, 2022. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-21-000173 · wf-form4_163917385701254.xml · nonDerivative · entry 4

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 115,873

F4 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $69.62 to $69.98, inclusive.

SEC source: 0000056978-21-000173 · wf-form4_163917385701254.xml · nonDerivative · entry 3

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 116,723

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $68.62 to $69.61, inclusive.

SEC source: 0000056978-21-000173 · wf-form4_163917385701254.xml · nonDerivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 119,083

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $67.62 to $68.61, inclusive.

SEC source: 0000056978-21-000173 · wf-form4_163917385701254.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 133,269

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $66.62 to $67.61, inclusive. The reporting person undertakes to provide to Kulicke and Soffa Industries, any security holder of Kulicke and Soffa Industries, 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 footnote (1), (2), (3), and (4) to this Form 4.

SEC source: 0000056978-21-000163 · wf-form4_163762733782926.xml · derivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 3,916 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded October 11, 2018 achieved a 200% payout based on the greater of absolute revenue growth or relative revenue growth against two performance peers for each year of the three-year performance period. The payout was certified and the shares issued on November 18, 2021. Each PSU is convertible into one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded October 11, 2018 achieved a 200% payout based on the greater of absolute revenue growth or relative revenue growth against two performance peers for each year of the three-year performance period. The payout was certified and the shares issued on November 18, 2021. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-21-000163 · wf-form4_163762733782926.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 145,873

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 · shares: Performance Share Units (PSUs) awarded October 11, 2018 achieved a 200% payout based on the greater of absolute revenue growth or relative revenue growth against two performance peers for each year of the three-year performance period. The payout was certified and the shares issued on November 18, 2021. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-21-000141 · wf-form4_163468478646797.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 141,957

F1 · shares: One-third of the shares granted vest on each anniversary of the date of grant.

SEC source: 0000056978-21-000126 · wf-form4_163416268453090.xml · derivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 8,577 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded October 11, 2018 achieved a 146% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of Performance Period with relative TSR measured over a three year period. The payout was certified and shares issued on October 11, 2021. Each PSU is convertible into one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded October 11, 2018 achieved a 146% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of Performance Period with relative TSR measured over a three year period. The payout was certified and shares issued on October 11, 2021. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-21-000126 · wf-form4_163416268453090.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 137,623

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 · shares: Performance Share Units (PSUs) awarded October 11, 2018 achieved a 146% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of Performance Period with relative TSR measured over a three year period. The payout was certified and shares issued on October 11, 2021. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-21-000034 · wf-form4_161486640875865.xml · nonDerivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 129,046

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.01 to $51.53, inclusive.

SEC source: 0000056978-21-000034 · wf-form4_161486640875865.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 131,256

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $50.00 to $50.98, inclusive. The reporting person undertakes to provide Kulicke and Soffa Industries Inc., any security holder of Kulicke and Soffa Industries 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 footnote (1) to this Form 4.

SEC source: 0000056978-20-000160 · wf-form4_160683272187059.xml · derivative · entry 4

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 178 shares

Expires not disclosed

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 · derivative.exercise_date: Performance Share Units (PSUs) awarded November 27, 2017 achieved a 17% payout based on the greater of absolute revenue growth or relative revenue growth against two performance peers for each year of the three-year performance period. The payout was certified and the shares issued on November 27, 2020. Each PSU is convertible into one share of common stock.

F2 · derivative.expiration_date: Performance Share Units (PSUs) awarded November 27, 2017 achieved a 17% payout based on the greater of absolute revenue growth or relative revenue growth against two performance peers for each year of the three-year performance period. The payout was certified and the shares issued on November 27, 2020. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-20-000160 · wf-form4_160683272187059.xml · derivative · entry 3

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 2,985 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded November 27, 2017 achieved a 95% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of Performance Period with relative TSR measured over a three year period. The payout was certified and shares issued on November 27, 2020. Each PSU is convertible into one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded November 27, 2017 achieved a 95% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of Performance Period with relative TSR measured over a three year period. The payout was certified and shares issued on November 27, 2020. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-20-000160 · wf-form4_160683272187059.xml · nonDerivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 162,046

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 · shares: Performance Share Units (PSUs) awarded November 27, 2017 achieved a 17% payout based on the greater of absolute revenue growth or relative revenue growth against two performance peers for each year of the three-year performance period. The payout was certified and the shares issued on November 27, 2020. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-20-000160 · wf-form4_160683272187059.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 161,868

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 · shares: Performance Share Units (PSUs) awarded November 27, 2017 achieved a 95% payout based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of Performance Period with relative TSR measured over a three year period. The payout was certified and shares issued on November 27, 2020. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-20-000154 · wf-form4_160625212754854.xml · derivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 305 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded November 7, 2017 achieved a 17% payout based on the greater of absolute revenue growth or relative revenue growth against two performance peers for each year of the three-year performance period. The payout was certified and the shares issued on November 23, 2020. Each PSU is convertible into one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded November 7, 2017 achieved a 17% payout based on the greater of absolute revenue growth or relative revenue growth against two performance peers for each year of the three-year performance period. The payout was certified and the shares issued on November 23, 2020. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-20-000154 · wf-form4_160625212754854.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,883

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 · shares: Performance Share Units (PSUs) awarded November 7, 2017 achieved a 17% payout based on the greater of absolute revenue growth or relative revenue growth against two performance peers for each year of the three-year performance period. The payout was certified and the shares issued on November 23, 2020. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-20-000138 · wf-form4_160501914638836.xml · derivative · entry 2

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,118 shares

Expires not disclosed

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: Performance Share Units (PSUs) awarded November 7, 2017 had its performance results certified, and then shares vested, on November 7, 2020 at 95% achievement based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of Performance Period with relative TSR measured over a three year period. Each PSU is convertible into one share of Kulicke and Soffa Industries Inc. common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded November 7, 2017 had its performance results certified, and then shares vested, on November 7, 2020 at 95% achievement based on total shareholder return (TSR) relative to a peer group. The peer group consisted of the companies of the GICS 45301020 (Semiconductors) not including companies traded on the Pink Sheets LLC Exchange as of the beginning of Performance Period with relative TSR measured over a three year period. Each PSU is convertible into one share of Kulicke and Soffa Industries Inc. common stock.