KLIC

SEC source: 0000056978-21-000059 · wf-form4_161783758367283.xml · nonDerivative · entry 1

Soloveizik Zamir Shai · CIK 0001768899 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,188

F1 · shares: The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1(c) sales plan dated March 9, 2021.

SEC source: 0000056978-21-000057 · wf-form4_161783741366475.xml · nonDerivative · entry 1

Yeo Mui Sung · CIK 0001559360 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 80,333

F1 · shares: Quarterly stock grant under the 2021 Omnibus Incentive Plan.

SEC source: 0000056978-21-000055 · wf-form4_161783723969727.xml · nonDerivative · entry 1

RICHARDSON DAVID JEFFREY · CIK 0001329724 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,602

F1 · shares: Quarterly stock grant under the 2021 Omnibus Incentive Plan.

SEC source: 0000056978-21-000053 · wf-form4_161783702774013.xml · nonDerivative · entry 1

Olson Jon A · CIK 0001331263 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,347

F1 · shares: Quarterly stock grant under the 2021 Omnibus Incentive Plan.

SEC source: 0000056978-21-000051 · wf-form4_161783684991081.xml · nonDerivative · entry 1

Milzcik Gregory F · CIK 0001196440 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 72,569

F1 · shares: Quarterly stock grant under the 2021 Omnibus Incentive Plan.

SEC source: 0000056978-21-000049 · wf-form4_161783669148472.xml · nonDerivative · entry 1

Lim Chin Hu · CIK 0001536593 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 80,885

F1 · shares: Quarterly stock grant under the 2021 Omnibus Incentive Plan.

SEC source: 0000056978-21-000047 · wf-form4_161783646962082.xml · nonDerivative · entry 1

Kong Peter T M · CIK 0001356626 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 81,214

F1 · shares: Quarterly stock grant under the 2021 Omnibus Incentive Plan.

SEC source: 0000056978-21-000045 · wf-form4_161619509350992.xml · nonDerivative · entry 3

Chong Chan Pin · CIK 0001692400 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 84,881

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.00 to $51.01, inclusive.

SEC source: 0000056978-21-000045 · wf-form4_161619509350992.xml · nonDerivative · entry 2

Chong Chan Pin · CIK 0001692400 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,181

F2 · 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 $50.57, inclusive.

SEC source: 0000056978-21-000045 · wf-form4_161619509350992.xml · nonDerivative · entry 1

Chong Chan Pin · CIK 0001692400 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 94,303

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $51.00 to $51.20, 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 footnotes (1), (2) and (3) to this Form 4.

SEC source: 0000056978-21-000043 · wf-form4_161521448973046.xml · nonDerivative · entry 1

Olson Jon A · CIK 0001331263 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,682

F1 · shares: Stock grant upon election to the Board of Directors under the 2021 Omnibus Incentive Plan. One-third of the shares granted vest on each anniversary of the date of grant.

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: 0000056978-21-000030 · wf-form4_161305242007250.xml · nonDerivative · entry 1

Milzcik Gregory F · CIK 0001196440 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 71,904

F1 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $43.29 to $43.35, 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 purchased at each separate price within the ranges set forth in footnote (1) to this Form 4.

SEC source: 0000056978-21-000012 · wf-form4_161046683033198.xml · nonDerivative · entry 1

Soloveizik Zamir Shai · CIK 0001768899 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 24,688

F1 · shares: The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1(c) sales plan dated March 24, 2020.

SEC source: 0000056978-21-000010 · wf-form4_160994252445920.xml · nonDerivative · entry 1

Yeo Mui Sung · CIK 0001559360 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 79,668

F1 · shares: Quarterly stock grant pursuant to the 2017 Equity Plan.

SEC source: 0000056978-21-000008 · wf-form4_160994234722907.xml · nonDerivative · entry 1

RICHARDSON DAVID JEFFREY · CIK 0001329724 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,937

F1 · shares: Quarterly stock grant pursuant to the 2017 Equity Plan.

SEC source: 0000056978-21-000006 · wf-form4_160994215541940.xml · nonDerivative · entry 1

Milzcik Gregory F · CIK 0001196440 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 69,594

F1 · shares: Quarterly stock grant pursuant to the 2017 Equity Plan.

SEC source: 0000056978-21-000002 · wf-form4_160994154108855.xml · nonDerivative · entry 1

Kong Peter T M · CIK 0001356626 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 80,549

F1 · shares: Quarterly stock grant pursuant to the 2017 Equity Plan.

SEC source: 0000056978-21-000004 · wf-form4_160994176845924.xml · nonDerivative · entry 1

Lim Chin Hu · CIK 0001536593 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 80,220

F1 · shares: Quarterly stock grant pursuant to the 2017 Equity Plan.

SEC source: 0000056978-20-000167 · wf-form4_160803861966957.xml · derivative · entry 4

Chong Chan Pin · CIK 0001692400 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 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.

F2 · derivative.exercise_date: Performance Share Units (PSUs) awarded December 11, 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 December 11, 2020. Each PSU is convertible into one share of common stock.

F2 · derivative.expiration_date: Performance Share Units (PSUs) awarded December 11, 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 December 11, 2020. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-20-000167 · wf-form4_160803861966957.xml · derivative · entry 3

Chong Chan Pin · CIK 0001692400 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,421 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 December 11, 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 December 11, 2020. Each PSU is convertible into one share of common stock.

F1 · derivative.expiration_date: Performance Share Units (PSUs) awarded December 11, 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 December 11, 2020. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-20-000167 · wf-form4_160803861966957.xml · nonDerivative · entry 2

Chong Chan Pin · CIK 0001692400 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 104,881

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 December 11, 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 December 11, 2020. Each PSU is convertible into one share of common stock.

SEC source: 0000056978-20-000167 · wf-form4_160803861966957.xml · nonDerivative · entry 1

Chong Chan Pin · CIK 0001692400 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 104,558

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 December 11, 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 December 11, 2020. Each PSU is convertible into one share of common stock.

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: 0000056978-20-000158 · wf-form4_160625250371492.xml · derivative · entry 2

Soloveizik Zamir Shai · CIK 0001768899 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 29 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: 0000056978-20-000158 · wf-form4_160625250371492.xml · nonDerivative · entry 1

Soloveizik Zamir Shai · CIK 0001768899 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,188

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: 0000056978-20-000156 · wf-form4_160625236419273.xml · derivative · entry 2

Wong Nelson MunPun · CIK 0001536288 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 354 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: 0000056978-20-000156 · wf-form4_160625236419273.xml · nonDerivative · entry 1

Wong Nelson MunPun · CIK 0001536288 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 155,880

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: 0000056978-20-000154 · 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: 0000056978-20-000152 · wf-form4_160625179124838.xml · derivative · entry 2

Chong Chan Pin · CIK 0001692400 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 354 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: 0000056978-20-000152 · wf-form4_160625179124838.xml · nonDerivative · entry 1

Chong Chan Pin · CIK 0001692400 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 99,137

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: 0000056978-20-000150 · wf-form4_160625160517258.xml · derivative · entry 2

CHEN FUSEN ERNIE · CIK 0001316245 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 4,060 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: 0000056978-20-000150 · wf-form4_160625160517258.xml · nonDerivative · entry 1

CHEN FUSEN ERNIE · CIK 0001316245 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 695,376

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: 0000056978-20-000148 · wf-form4_160587477557336.xml · nonDerivative · entry 1

Soloveizik Zamir Shai · CIK 0001768899 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 27,159

F1 · shares: The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1(c) sales plan dated March 24, 2020.

SEC source: 0000056978-20-000140 · wf-form4_160501931081583.xml · derivative · entry 2

Wong Nelson MunPun · CIK 0001536288 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,952 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.

SEC source: 0000056978-20-000140 · wf-form4_160501931081583.xml · nonDerivative · entry 1

Wong Nelson MunPun · CIK 0001536288 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 155,526

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 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.

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.

SEC source: 0000056978-20-000138 · wf-form4_160501914638836.xml · nonDerivative · entry 1

Wong Lester A · CIK 0001529306 · Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 158,578

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 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.

SEC source: 0000056978-20-000136 · wf-form4_160501892747854.xml · derivative · entry 2

Soloveizik Zamir Shai · CIK 0001768899 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 498 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.

SEC source: 0000056978-20-000136 · wf-form4_160501892747854.xml · nonDerivative · entry 1

Soloveizik Zamir Shai · CIK 0001768899 · Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,659

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 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.

SEC source: 0000056978-20-000134 · wf-form4_160501870230966.xml · derivative · entry 2

Chong Chan Pin · CIK 0001692400 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 5,952 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.

SEC source: 0000056978-20-000134 · wf-form4_160501870230966.xml · nonDerivative · entry 1

Chong Chan Pin · CIK 0001692400 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 98,783

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 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.

SEC source: 0000056978-20-000132 · wf-form4_160501854996787.xml · derivative · entry 2

CHEN FUSEN ERNIE · CIK 0001316245 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 0

Underlying: Common Stock · 68,073 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.

SEC source: 0000056978-20-000132 · wf-form4_160501854996787.xml · nonDerivative · entry 1

CHEN FUSEN ERNIE · CIK 0001316245 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 691,316

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 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.

SEC source: 0000056978-20-000130 · wf-form4_160310628438507.xml · nonDerivative · entry 1

Wong Nelson MunPun · CIK 0001536288 · Senior Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 149,574

F1 · shares: The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1(c) sales plan dated October 15, 2020.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $26.39 to $26.57, inclusive. The reporting person undertakes to provide Kulicke & Soffa Industries Inc., any security holder of Kulicke & Soffa Industries Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the ranges set forth in footnote (1) to this Form 4.