KLAC

SEC source: 0001628280-21-016249 · wf-form4_162854028611734.xml · nonDerivative · entry 3

Kirloskar Virendra A · CIK 0001430600 · SVP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,402

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 · security: Each RSU represents a contingent right to receive one share of KLA common stock.

F5 · shares: The Reporting Person vested fifty percent (50%) of the performance-based RSUs upon the date on which the Compensation Committee of KLA's Board of Directors determined the level at which theunderlying performance goals were attained (August 5, 2021) and will vest in the remaining fifty percent (50%) upon his completion of four years of service following the award (August 2, 2022). The shares ofcommon stock will be issued as the performance-based RSUs vest.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-016249 · wf-form4_162854028611734.xml · nonDerivative · entry 2

Kirloskar Virendra A · CIK 0001430600 · SVP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,251

F1 · security: Each RSU represents a contingent right to receive one share of KLA common stock.

F4 · shares: On August 2, 2018, in addition to the RSUs granted on that date that were subject only to service-vesting requirements (which RSUs were previously reported on a Form 4), the Reporting Person was alsogranted RSUs covering up to a maximum of 4,138 shares (based on 150% of the target shares of 2,759) of KLA common stock, subject to both performance-vesting and service-vesting requirements. On August5, 2021, the Compensation Committee of KLA's Board of Directors determined the level at which the corporate performance goals were attained and, based on the assessment, determined that the number ofshares subject to the RSUs is 3,697.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-016249 · wf-form4_162854028611734.xml · nonDerivative · entry 1

Kirloskar Virendra A · CIK 0001430600 · SVP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,554

F1 · security: Each RSU represents a contingent right to receive one share of KLA common stock.

F2 · shares: On August 5, 2021, the Reporting Person received a grant of RSUs. The RSUs vest 25% annually from the date of grant.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-016252 · wf-form4_162854033178265.xml · nonDerivative · entry 2

Wilkinson Mary Beth · CIK 0001691769 · EVP, CLO and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 22,330

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F2 · shares: On August 5, 2021, the Reporting Person received a grant of RSUs. The RSUs vest 25% annually from the date of grant.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-016252 · wf-form4_162854033178265.xml · nonDerivative · entry 1

Wilkinson Mary Beth · CIK 0001691769 · EVP, CLO and Secretary

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 19,127

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F2 · shares: On August 5, 2021, the Reporting Person received a grant of RSUs. The RSUs vest 25% annually from the date of grant.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-016630 · wf-form4a_162871542188595.xml · nonDerivative · entry 2

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,671

F3 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 5, 2021.

F4 · balance_after: This amendment to Form 4 is being filed to correct an administrative error which incorrectly reported the number of shares of KLA common stock that were beneficially owned by the Reporting Person following this reported transaction on August 5, 2021, and to report the holding for the Reporting Person as 12,671 shares of KLA common stock, instead of 10,501, following the reported transaction.

SEC source: 0001628280-21-016630 · wf-form4a_162871542188595.xml · nonDerivative · entry 1

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,872

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: The Reporting Person vested fifty percent (50%) of the performance-based RSUs upon the date on which the Compensation Committee of KLA's Board of Directors determined the level at which theunderlying performance goals were attained (August 5, 2021) and will vest in the remaining fifty percent (50%) upon his completion of four years of service following the award (August 2, 2022). The shares ofcommon stock will be issued as the performance-based RSUs vest.

F2 · balance_after: This amendment to Form 4 is being filed to correct an administrative error which incorrectly reported the number of shares of KLA common stock that were beneficially owned by the Reporting Person following this reported transaction on August 5, 2021, and to report the holding for the Reporting Person as 16,872 shares of KLA common stock, instead of 14,702, following such transaction.

SEC source: 0001628280-21-016652 · wf-form4a_162872171549752.xml · nonDerivative · entry 5

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,671

F10 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes ofcalculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 5, 2021.

F11 · balance_after: This amendment to Form 4 is being filed to correct an administrative error which incorrectly reported the number of shares of KLA common stock that were beneficially owned by the Reporting Person following this reported transaction on August 5, 2021, and to report the holding for the Reporting Person as 12,671 shares of KLA common stock, instead of 10,501, following the reported transaction.

SEC source: 0001628280-21-016652 · wf-form4a_162872171549752.xml · nonDerivative · entry 4

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 16,872

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.

F7 · shares: The Reporting Person vested fifty percent (50%) of the performance-based RSUs upon the date on which the Compensation Committee of KLA's Board of Directors determined the level at which theunderlying performance goals were attained (August 5, 2021) and will vest in the remaining fifty percent (50%) upon his completion of four years of service following the award (August 2, 2022). The shares ofcommon stock will be issued as the performance-based RSUs vest.

F9 · balance_after: This amendment to Form 4 is being filed to correct an administrative error which incorrectly reported the number of shares of KLA common stock that were beneficially owned by the Reporting Person following this reported transaction on August 5, 2021, and to report the holding for the Reporting Person as 16,872 shares of KLA common stock, instead of 14,702, following such transaction.

SEC source: 0001628280-21-016652 · wf-form4a_162872171549752.xml · nonDerivative · entry 3

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 82,649

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 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F7 · shares: The Reporting Person vested fifty percent (50%) of the performance-based RSUs upon the date on which the Compensation Committee of KLA's Board of Directors determined the level at which theunderlying performance goals were attained (August 5, 2021) and will vest in the remaining fifty percent (50%) upon his completion of four years of service following the award (August 2, 2022). The shares ofcommon stock will be issued as the performance-based RSUs vest.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

F8 · balance_after: This amendment to Form 4 is being filed to correct an administrative error which incorrectly reported the number of RSUs that were beneficially owned by the Reporting Person following this reported transaction on August 5, 2021, and to report the holding for the Reporting Person as 82,649 RSUs, instead of 90,308, following the reported transaction.

SEC source: 0001628280-21-016652 · wf-form4a_162872171549752.xml · nonDerivative · entry 2

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,121

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F5 · shares: On August 2, 2018, in addition to the RSUs granted on that date that were subject only to service-vesting requirements (which RSUs were previously reported on a Form 4), the Reporting Person was alsogranted RSUs covering up to a maximum of 18,967 shares (based on 150% of the target shares of 12,645) of KLA common stock, subject to both performance-vesting and service-vesting requirements. On August 5, 2021, the Compensation Committee of KLA's Board of Directors determined the level at which the corporate performance goals were attained and, based on the assessment, determined that the number of shares subject to the RSUs is 16,944.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

F6 · balance_after: This amendment to Form 4 is being filed to correct an administrative error which incorrectly reported the number of RSUs that were beneficially owned by the Reporting Person following this reported transaction on August 5, 2021, and to report the holding for the Reporting Person as 91,121 RSUs, instead of 98,780, following the reported transaction.

SEC source: 0001628280-21-016652 · wf-form4a_162872171549752.xml · nonDerivative · entry 1

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 74,177

F1 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F2 · shares: On August 5, 2021, the Reporting Person received a grant of RSUs. The RSUs vest 25% annually from the date of grant.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

F4 · balance_after: This amendment to Form 4 is being filed to correct an administrative error which incorrectly reported the number of RSUs that were beneficially owned by the Reporting Person following this reported transaction on August 5, 2021, and to report the holding for the Reporting Person as 74,177 RSUs, instead of 81,836, following the reported transaction.

SEC source: 0001628280-21-016095 · wf-form4_162828150623631.xml · nonDerivative · entry 1

Kirloskar Virendra A · CIK 0001430600 · SVP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 297

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on March 3, 2021.

SEC source: 0001628280-21-016096 · wf-form4_162828152737607.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 566

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 25, 2021.

SEC source: 0001628280-21-016097 · wf-form4_162828154644857.xml · nonDerivative · entry 1

Donzella Oreste · CIK 0001802832 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,251

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 22, 2021.

SEC source: 0001628280-21-015881 · wf-form4_162819532820807.xml · nonDerivative · entry 7

Lorig Brian · CIK 0001697041 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,220

F6 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 25, 2021.

SEC source: 0001628280-21-015881 · wf-form4_162819532820807.xml · nonDerivative · entry 6

Lorig Brian · CIK 0001697041 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,915

F4 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 3, 2021.

SEC source: 0001628280-21-015881 · wf-form4_162819532820807.xml · nonDerivative · entry 5

Lorig Brian · CIK 0001697041 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,381

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.

F5 · shares: On August 3, 2017, the Reporting Person was granted RSUs for 3,752 shares of KLA common stock. On August 3, 2021, the remaining 25% of the RSUs vested.

SEC source: 0001628280-21-015881 · wf-form4_162819532820807.xml · nonDerivative · entry 4

Lorig Brian · CIK 0001697041 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 28,102

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 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F5 · shares: On August 3, 2017, the Reporting Person was granted RSUs for 3,752 shares of KLA common stock. On August 3, 2021, the remaining 25% of the RSUs vested.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-015881 · wf-form4_162819532820807.xml · nonDerivative · entry 3

Lorig Brian · CIK 0001697041 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 2,443

F4 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 3, 2021.

SEC source: 0001628280-21-015881 · wf-form4_162819532820807.xml · nonDerivative · entry 2

Lorig Brian · CIK 0001697041 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,606

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: The remaining fifty percent (50%) of the performance-based RSUs that were granted to the Reporting Person on August 3, 2017, vested upon his completion of four years of service following the grant of the award.

SEC source: 0001628280-21-015881 · wf-form4_162819532820807.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,040

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 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F2 · shares: The remaining fifty percent (50%) of the performance-based RSUs that were granted to the Reporting Person on August 3, 2017, vested upon his completion of four years of service following the grant of the award.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-015883 · wf-form4_162819537589374.xml · nonDerivative · entry 6

Higgins Bren D. · CIK 0001582049 · EVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 8,541

F4 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 3, 2021.

SEC source: 0001628280-21-015883 · wf-form4_162819537589374.xml · nonDerivative · entry 5

Higgins Bren D. · CIK 0001582049 · EVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,937

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.

F5 · shares: On August 3, 2017, the Reporting Person was granted RSUs for 11,256 shares of KLA common stock. On August 3, 2021, the remaining 25% of the RSUs vested.

SEC source: 0001628280-21-015883 · wf-form4_162819537589374.xml · nonDerivative · entry 4

Higgins Bren D. · CIK 0001582049 · EVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 58,837

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 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F5 · shares: On August 3, 2017, the Reporting Person was granted RSUs for 11,256 shares of KLA common stock. On August 3, 2021, the remaining 25% of the RSUs vested.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-015883 · wf-form4_162819537589374.xml · nonDerivative · entry 3

Higgins Bren D. · CIK 0001582049 · EVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,123

F4 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 3, 2021.

SEC source: 0001628280-21-015883 · wf-form4_162819537589374.xml · nonDerivative · entry 2

Higgins Bren D. · CIK 0001582049 · EVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,611

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: The remaining fifty percent (50%) of the performance-based RSUs that were granted to the Reporting Person on August 3, 2017, vested upon his completion of four years of service following the grant of the award.

SEC source: 0001628280-21-015883 · wf-form4_162819537589374.xml · nonDerivative · entry 1

Higgins Bren D. · CIK 0001582049 · EVP & Chief Financial Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 61,651

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 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F2 · shares: The remaining fifty percent (50%) of the performance-based RSUs that were granted to the Reporting Person on August 3, 2017, vested upon his completion of four years of service following the grant of the award.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-015884 · wf-form4_162819543375838.xml · nonDerivative · entry 6

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,570

F4 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 3, 2021.

SEC source: 0001628280-21-015884 · wf-form4_162819543375838.xml · nonDerivative · entry 5

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 9,485

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.

F5 · shares: On August 3, 2017, the Reporting Person was granted RSUs for 8,755 shares of KLA common stock. On August 3, 2021, the remaining 25% of the RSUs vested.

SEC source: 0001628280-21-015884 · wf-form4_162819543375838.xml · nonDerivative · entry 4

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 67,450

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 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F5 · shares: On August 3, 2017, the Reporting Person was granted RSUs for 8,755 shares of KLA common stock. On August 3, 2021, the remaining 25% of the RSUs vested.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-015884 · wf-form4_162819543375838.xml · nonDerivative · entry 3

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,297

F4 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 3, 2021.

SEC source: 0001628280-21-015884 · wf-form4_162819543375838.xml · nonDerivative · entry 2

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 10,010

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: The remaining fifty percent (50%) of the performance-based RSUs that were granted to the Reporting Person on August 3, 2017, vested upon his completion of four years of service following the grant of the award.

SEC source: 0001628280-21-015884 · wf-form4_162819543375838.xml · nonDerivative · entry 1

Khan Ahmad A. · CIK 0001642452 · President, Semi Proc. Control

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 69,638

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 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F2 · shares: The remaining fifty percent (50%) of the performance-based RSUs that were granted to the Reporting Person on August 3, 2017, vested upon his completion of four years of service following the grant of the award.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-015885 · wf-form4_162819549399459.xml · nonDerivative · entry 6

WALLACE RICHARD P · CIK 0001196898 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 81,693

F4 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 3, 2021.

SEC source: 0001628280-21-015885 · wf-form4_162819549399459.xml · nonDerivative · entry 5

WALLACE RICHARD P · CIK 0001196898 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 85,414

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.

F5 · shares: On August 3, 2017, the Reporting Person was granted RSUs for 30,016 shares of KLA common stock. On August 3, 2021, the remaining 25% of the RSUs vested.

SEC source: 0001628280-21-015885 · wf-form4_162819549399459.xml · nonDerivative · entry 4

WALLACE RICHARD P · CIK 0001196898 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 162,430

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 · security: Each RSU represents a contingent right to receive one share of KLA common stock.

F5 · shares: On August 3, 2017, the Reporting Person was granted RSUs for 30,016 shares of KLA common stock. On August 3, 2021, the remaining 25% of the RSUs vested.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-015885 · wf-form4_162819549399459.xml · nonDerivative · entry 3

WALLACE RICHARD P · CIK 0001196898 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 77,910

F4 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 3, 2021.

SEC source: 0001628280-21-015885 · wf-form4_162819549399459.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 91,862

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: The remaining fifty percent (50%) of the performance-based RSUs that were granted to the Reporting Person on August 3, 2017, vested upon his completion of four years of service following the grant of the award.

SEC source: 0001628280-21-015885 · wf-form4_162819549399459.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · Director · President and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 169,934

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 · security: Each RSU represents a contingent right to receive one share of KLA common stock.

F2 · shares: The remaining fifty percent (50%) of the performance-based RSUs that were granted to the Reporting Person on August 3, 2017, vested upon his completion of four years of service following the grant of the award.

F3 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-015887 · wf-form4_162819555446469.xml · nonDerivative · entry 7

Donzella Oreste · CIK 0001802832 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,723

F5 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 3, 2021.

SEC source: 0001628280-21-015887 · wf-form4_162819555446469.xml · nonDerivative · entry 6

Donzella Oreste · CIK 0001802832 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,189

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · shares: On August 3, 2017, the Reporting Person was granted RSUs for 3,752 shares of KLA common stock. On August 3, 2021, the remaining 25% of the RSUs vested.

SEC source: 0001628280-21-015887 · wf-form4_162819555446469.xml · nonDerivative · entry 5

Donzella Oreste · CIK 0001802832 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 29,783

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.

F2 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F6 · shares: On August 3, 2017, the Reporting Person was granted RSUs for 3,752 shares of KLA common stock. On August 3, 2021, the remaining 25% of the RSUs vested.

F4 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-015887 · wf-form4_162819555446469.xml · nonDerivative · entry 4

Donzella Oreste · CIK 0001802832 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 6,251

F5 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 3, 2021.

SEC source: 0001628280-21-015887 · wf-form4_162819555446469.xml · nonDerivative · entry 3

Donzella Oreste · CIK 0001802832 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 7,414

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F3 · shares: The remaining fifty percent (50%) of the performance-based RSUs that were granted to the Reporting Person on August 3, 2017, vested upon his completion of four years of service following the grant of the award.

SEC source: 0001628280-21-015887 · wf-form4_162819555446469.xml · nonDerivative · entry 2

Donzella Oreste · CIK 0001802832 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 30,721

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 · security: Each restricted stock unit ("RSU") represents a contingent right to receive one share of KLA common stock.

F3 · shares: The remaining fifty percent (50%) of the performance-based RSUs that were granted to the Reporting Person on August 3, 2017, vested upon his completion of four years of service following the grant of the award.

F4 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.

SEC source: 0001628280-21-015887 · wf-form4_162819555446469.xml · nonDerivative · entry 1

Donzella Oreste · CIK 0001802832 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 5,069

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 22, 2021.

SEC source: 0001628280-21-015889 · wf-form4_162819566313034.xml · nonDerivative · entry 7

Kirloskar Virendra A · CIK 0001430600 · SVP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,400

F5 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 3, 2021.

SEC source: 0001628280-21-015889 · wf-form4_162819566313034.xml · nonDerivative · entry 6

Kirloskar Virendra A · CIK 0001430600 · SVP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,710

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F6 · shares: On August 3, 2017, the Reporting Person was granted RSUs for 2,502 shares of KLA common stock. On August 3, 2021, the remaining 25% of the RSUs vested.

SEC source: 0001628280-21-015889 · wf-form4_162819566313034.xml · nonDerivative · entry 5

Kirloskar Virendra A · CIK 0001430600 · SVP & Chief Accounting Officer

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 3,593

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 · security: Each RSU represents a contingent right to receive one share of KLA common stock.

F6 · shares: On August 3, 2017, the Reporting Person was granted RSUs for 2,502 shares of KLA common stock. On August 3, 2021, the remaining 25% of the RSUs vested.

F4 · balance_after: Does not include performance-based RSUs, if any, held by the Reporting Person for which an assessment has not yet been made regarding the achievement of the applicable performance goals. Any such holdings will be reported on a Form 4 within two business days of the date such assessment is made.