KLIC

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

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.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $112.00 to $115.05, inclusive.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $102.75 to $103.10, inclusive.

This Form 4 is being filed late due to administrative error.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

This Form 4 is being filed late due to administrative error.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

This Form 4 is being filed late due to administrative error.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

This Form 4 is being filed late due to administrative error.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

This Form 4 is being filed late due to administrative error.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

This Form 4 is being filed late due to administrative error.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $71.95 to $72.35, inclusive.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $71.65 to $72.43, inclusive.

The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1(c) sales plan dated December 2, 2024.

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $60.00 to $63.48, inclusive.

The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1(c) sales plan dated December 2, 2024

The shares covered by this Form 4 were sold pursuant to a Rule 10b5-1(c) sales plan dated December 2, 2024

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $56.14 to $57.70, inclusive.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

Quarterly stock grant under the 2021 Omnibus Incentive Plan.

On December 18, 2025, the Reporting Person transferred 5,665 directly owned ordinary shares to a family trust pursuant to which the Reporting Person retains beneficial ownership of these shares.

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 $50.135, inclusive.

Restricted stock unit awards in connection with the Reporting Person's additional board services. Shares granted vest on the anniversary date of grant.

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.

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.

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.

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.

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.

Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with issuance of 142 shares of common stock arising from payout under Performance Share Units (PSUs) awarded on awarded October 14, 2022. The payout was certified, and the shares issued on November 20, 2025. Each PSU is convertible into one share of common stock. These shares were not issued to or sold by the Reporting Person.

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.

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.

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.

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.

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.

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.

Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of 2,364 restricted stock units (RSUs) on October 16, 2025. This RSU vesting is in connection to an RSU award granted on October 16, 2024, of 7,094 shares. These shares that were withheld were not issued to or sold by the Reporting Person.

Represents shares withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of 2,368 restricted stock units (RSUs) on October 14, 2025. This RSU vesting is in connection to an RSU award granted on October 14, 2022 of 7,104 shares. These shares that were withheld were not issued to or sold by the Reporting Person.

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.