KLAC

SEC source: 0001193125-25-272377 · ownership.xml · nonDerivative · entry 1

Conley Jason · CIK 0001699418 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 203.732

F1 · shares: On November 5, 2025, the Reporting Person received an automatic grant of restricted stock units ("RSUs") for 203.732 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) November 5, 2026, (ii) immediately prior to the next annual meeting of stockholders, and (iii) ten days prior to a change of control of KLA.

F2 · balance_after: The number of shares of KLA common stock includes 203.732 shares issuable upon vesting of RSUs.

SEC source: 0001193125-25-272379 · ownership.xml · nonDerivative · entry 1

Embree Tracy A · CIK 0001629977 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 203.732

F1 · shares: On November 5, 2025, the Reporting Person received an automatic grant of restricted stock units ("RSUs") for 203.732 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) November 5, 2026, (ii) immediately prior to the next annual meeting of stockholders, and (iii) ten days prior to a change of control of KLA.

F2 · balance_after: The number of shares of KLA common stock includes 203.732 shares issuable upon vesting of RSUs.

SEC source: 0001642452-25-000007 · ownership.xml · nonDerivative · entry 1

Khan Ahmad A. · CIK 0001642452 · President, Semi. Prod. & Cust.

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 22,808.252

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 30, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 21,716.968 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-112467 · ownership.xml · nonDerivative · entry 1

Khan Ahmad A. · CIK 0001642452 · President, Semi. Prod. & Cust.

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,372.252

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 30, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 21,716.968 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-110947 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 34,408.4

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 5, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 21,418.468 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-108845 · ownership.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,479.006

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 2, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 10,902.905 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-108847 · ownership.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 92,014.008

F3 · shares: This gift was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 1, 2024.

F2 · balance_after: The number of shares of KLA common stock includes 57,511.168 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-108847 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 92,818.008

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 1, 2024.

F2 · balance_after: The number of shares of KLA common stock includes 57,511.168 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-107288 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,254.491

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 20, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 1,951.639 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-107289 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,801.906

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 7, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 7,794.972 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-105813 · ownership.xml · nonDerivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,709.4

F7 · shares: On August 7, 2025, the Reporting Person received a grant of restricted stock units ("RSUs"). The RSUs vest 25% annually from the date of grant.

F8 · balance_after: The number of shares of KLA common stock includes 21,418.468 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105813 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,056.024

F5 · shares: On August 4, 2022, in addition to the RSUs granted that were subject to only service-based vesting conditions, the Reporting Person was also granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") divided into three tranches. The second tranche was for a target number of shares equal to 4,194.000 shares of KLA common stock. The maximum number of shares issuable under the second tranche of these PRSUs is 250% of the target shares if the sum of KLA's non-GAAP earnings per diluted share for fiscal years 2023, 2024 and 2025 equaled or exceeded $93.00. On August 7, 2025, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to the second tranche of these PRSUs were satisfied at 147% of target shares. The second tranche of these PRSUs will vest on June 30, 2026, subject to continue service of the Reporting Person.

F6 · balance_after: The number of shares of KLA common stock includes 17,765.092 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105813 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,890.844

F3 · shares: On August 7, 2025, fifty percent (50%) of the performance-based restricted stock units granted on August 4, 2022 vested. 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 6, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 11,599.912 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105813 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,107.814

F1 · shares: On August 4, 2022, in addition to the RSUs granted that were subject to only service-based vesting conditions, the Reporting Person was also granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") for a target number of shares equal to 5,962.000 shares of KLA common stock. The maximum number of shares issuable under these PRSUs is 150% of the target shares if KLA's free cash flow relative to its peers was at the 75th percentile or greater for the three years in the period ended June 30, 2025. On August 7, 2025, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to these PRSUs were satisfied at the maximum level. Fifty percent (50%) of the PRSUs will vest today, August 7, 2025, and the remaining fifty percent (50%) of the PRSUs will vest on August 4, 2026, subject to continued service of the Reporting Person.

F2 · balance_after: The number of shares of KLA common stock includes 16,071.412 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-105814 · ownership.xml · nonDerivative · entry 4

Khan Ahmad A. · CIK 0001642452 · President, Semi. Prod. & Cust.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,088.252

F7 · shares: On August 7, 2025, the Reporting Person received a grant of restricted stock units ("RSUs"). The RSUs vest 25% annually from the date of grant.

F8 · balance_after: The number of shares of KLA common stock includes 21,716.968 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105814 · ownership.xml · nonDerivative · entry 3

Khan Ahmad A. · CIK 0001642452 · President, Semi. Prod. & Cust.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 37,434.876

F5 · shares: On August 4, 2022, in addition to the RSUs granted that were subject to only service-based vesting conditions, the Reporting Person was also granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") divided into three tranches. The second tranche was for a target number of shares equal to 4,194.000 shares of KLA common stock. The maximum number of shares issuable under the second tranche of these PRSUs is 250% of the target shares if the sum of KLA's non-GAAP earnings per diluted share for fiscal years 2023, 2024 and 2025 equaled or exceeded $93.00. On August 7, 2025, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to the second tranche of these PRSUs were satisfied at 147% of target shares. The second tranche of these PRSUs will vest on June 30, 2026, subject to continue service of the Reporting Person.

F6 · balance_after: The number of shares of KLA common stock includes 18,063.592 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105814 · ownership.xml · nonDerivative · entry 2

Khan Ahmad A. · CIK 0001642452 · President, Semi. Prod. & Cust.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 31,269.696

F3 · shares: On August 7, 2025, fifty percent (50%) of the performance-based restricted stock units granted on August 4, 2022 vested. 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 6, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 11,898.412 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105814 · ownership.xml · nonDerivative · entry 1

Khan Ahmad A. · CIK 0001642452 · President, Semi. Prod. & Cust.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 33,597.477

F1 · shares: On August 4, 2022, in addition to the RSUs granted that were subject to only service-based vesting conditions, the Reporting Person was also granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") for a target number of shares equal to 6,260.00 shares of KLA common stock. The maximum number of shares issuable under these PRSUs is 150% of the target shares if KLA's free cash flow relative to its peers was at the 75th percentile or greater for the three years in the period ended June 30, 2025. On August 7, 2025, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to these PRSUs were satisfied at the maximum level. Fifty percent (50%) of the PRSUs will vest today, August 7, 2025, and the remaining fifty percent (50%) of the PRSUs will vest on August 4, 2026, subject to continued service of the Reporting Person.

F2 · balance_after: The number of shares of KLA common stock includes 16,593.412 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-105815 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,592.491

F5 · shares: On August 7, 2025, the Reporting Person received a grant of restricted stock units ("RSUs"). The RSUs vest 25% annually from the date of grant.

F6 · balance_after: The number of shares of KLA common stock includes 1,951.639 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105815 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,175.352

F3 · shares: On August 7, 2025, fifty percent (50%) of the performance-based restricted stock units granted on August 4, 2022 vested. 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 6, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 1,534.500 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105815 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,507.786

F1 · shares: On August 4, 2022, in addition to the RSUs granted that were subject to only service-based vesting conditions, the Reporting Person was also granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") for a target number of shares equal to 894.000 shares of KLA common stock. The maximum number of shares issuable under these PRSUs is 150% of the target shares if KLA's free cash flow relative to its peers was at the 75th percentile or greater for the three years in the period ended June 30, 2025. On August 7, 2025, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to these PRSUs were satisfied at the maximum level. Fifty percent (50%) of the PRSUs will vest today, August 7, 2025, and the remaining fifty percent (50%) of the PRSUs will vest on August 4, 2026, subject to continued service of the Reporting Person.

F2 · balance_after: The number of shares of KLA common stock includes 2,205.000 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-105816 · ownership.xml · nonDerivative · entry 4

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,528.006

F7 · shares: On August 7, 2025, the Reporting Person received a grant of restricted stock units ("RSUs"). The RSUs vest 25% annually from the date of grant.

F8 · balance_after: The number of shares of KLA common stock includes 10,902.905 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105816 · ownership.xml · nonDerivative · entry 3

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,210.566

F5 · shares: On August 4, 2022, in addition to the RSUs granted that were subject to only service-based vesting conditions, the Reporting Person was also granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") divided into three tranches. The second tranche was for a target number of shares equal to 1,677.000 shares of KLA common stock. The maximum number of shares issuable under the second tranche of these PRSUs is 250% of the target shares if the sum of KLA's non-GAAP earnings per diluted share for fiscal years 2023, 2024 and 2025 equaled or exceeded $93.00. On August 7, 2025, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to the second tranche of these PRSUs were satisfied at 147% of target shares. The second tranche of these PRSUs will vest on June 30, 2026, subject to continue service of the Reporting Person.

F6 · balance_after: The number of shares of KLA common stock includes 8,585.465 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105816 · ownership.xml · nonDerivative · entry 2

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,745.376

F3 · shares: On August 7, 2025, fifty percent (50%) of the performance-based restricted stock units granted on August 4, 2022 vested. 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 6, 2025

F4 · balance_after: The number of shares of KLA common stock includes 6,120.275 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105816 · ownership.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,854.233

F1 · shares: On August 4, 2022, in addition to the RSUs granted that were subject to only service-based vesting conditions, the Reporting Person was also granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") for a target number of shares equal to 2,981.000 shares of KLA common stock. The maximum number of shares issuable under these PRSUs is 150% of the target shares if KLA's free cash flow relative to its peers was at the 75th percentile or greater for the three years in the period ended June 30, 2025. On August 7, 2025, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to these PRSUs were satisfied at the maximum level. Fifty percent (50%) of the PRSUs will vest today, August 7, 2025, and the remaining fifty percent (50%) of the PRSUs will vest on August 4, 2026, subject to continued service of the Reporting Person.

F2 · balance_after: The number of shares of KLA common stock includes 8,356.775 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-105817 · ownership.xml · nonDerivative · entry 4

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 103,619.008

F7 · shares: On August 7, 2025, the Reporting Person received a grant of restricted stock units ("RSUs"). The RSUs vest 25% annually from the date of grant.

F8 · balance_after: The number of shares of KLA common stock includes 57,511.168 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105817 · ownership.xml · nonDerivative · entry 3

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,324.121

F5 · shares: On August 4, 2022, in addition to the RSUs granted that were subject to only service-based vesting conditions, the Reporting Person was also granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") divided into three tranches. The second tranche was for a target number of shares equal to 6,291.000 shares of KLA common stock. The maximum number of shares issuable under the second tranche of these PRSUs is 250% of the target shares if the sum of KLA's non-GAAP earnings per diluted share for fiscal years 2023, 2024 and 2025 equaled or exceeded $93.00. On August 7, 2025, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to the second tranche of these PRSUs were satisfied at 147% of target shares. The second tranche of these PRSUs will vest on June 30, 2026, subject to continue service of the Reporting Person.

F6 · balance_after: The number of shares of KLA common stock includes 47,216.281 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105817 · ownership.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 84,076.351

F3 · shares: On August 7, 2025, fifty percent (50%) of the performance-based restricted stock units granted on August 4, 2022 vested. 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 6, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 37,968.511 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105817 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 93,055.042

F1 · shares: On August 4, 2022, in addition to the RSUs granted that were subject to only service-based vesting conditions, the Reporting Person was also granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") for a target number of shares equal to 24,146.000 shares of KLA common stock. The maximum number of shares issuable under these PRSUs is 150% of the target shares if KLA's free cash flow relative to its peers was at the 75th percentile or greater for the three years in the period ended June 30, 2025. On August 7, 2025, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to these PRSUs were satisfied at the maximum level. Fifty percent (50%) of the PRSUs will vest today, August 7, 2025, and the remaining fifty percent (50%) of the PRSUs will vest on August 4, 2026, subject to continued service of the Reporting Person.

F2 · balance_after: The number of shares of KLA common stock includes 56,078.011 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-105818 · ownership.xml · nonDerivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,823.906

F7 · shares: On August 7, 2025, the Reporting Person received a grant of restricted stock units ("RSUs"). The RSUs vest 25% annually from the date of grant.

F8 · balance_after: The number of shares of KLA common stock includes 7,794.972 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105818 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,678.818

F5 · shares: On August 4, 2022, in addition to the RSUs granted that were subject to only service-based vesting conditions, the Reporting Person was also granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") divided into three tranches. The second tranche was for a target number of shares equal to 1,677.000 shares of KLA common stock. The maximum number of shares issuable under the second tranche of these PRSUs is 250% of the target shares if the sum of KLA's non-GAAP earnings per diluted share for fiscal years 2023, 2024 and 2025 equaled or exceeded $93.00. On August 7, 2025, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to the second tranche of these PRSUs were satisfied at 147% of target shares. The second tranche of these PRSUs will vest on June 30, 2026, subject to continue service of the Reporting Person.

F6 · balance_after: The number of shares of KLA common stock includes 6,649.884 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105818 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,213.628

F3 · shares: On August 7, 2025, fifty percent (50%) of the performance-based restricted stock units granted on August 4, 2022 vested. 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 6, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 4,184.694 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-105818 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,980.429

F1 · shares: On August 4, 2022, in addition to the RSUs granted that were subject to only service-based vesting conditions, the Reporting Person was also granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") for a target number of shares equal to 2,385.000 shares of KLA common stock. The maximum number of shares issuable under these PRSUs is 150% of the target shares if KLA's free cash flow relative to its peers was at the 75th percentile or greater for the three years in the period ended June 30, 2025. On August 7, 2025, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to these PRSUs were satisfied at the maximum level. Fifty percent (50%) of the PRSUs will vest today, August 7, 2025, and the remaining fifty percent (50%) of the PRSUs will vest on August 4, 2026, subject to continued service of the Reporting Person.

F2 · balance_after: The number of shares of KLA common stock includes 5,974.194 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-104979 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,166.786

F5 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 20, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 864.000 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-104979 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,677.786

F3 · shares: On August 5, 2021, the Reporting Person was granted restricted stock units ("RSUs") for 961.000 shares of KLA common stock. On August 5, 2025, the remaining twenty-five percent (25%) of the RSUs vested. 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 4, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 864.000 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-104979 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 1,796.779

F1 · shares: On August 5, 2025, the remaining fifty percent (50%) of the performance-based restricted stock units granted on August 5, 2021 vested. 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 4, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 1,104.000 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-104980 · ownership.xml · nonDerivative · entry 4

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,402.929

F7 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 7, 2025.

F6 · balance_after: The number of shares of KLA common stock includes 2,396.694 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-104980 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,322.929

F5 · shares: On August 5, 2021, the Reporting Person was granted restricted stock units ("RSUs") for 3,203.000 shares of KLA common stock. On August 5, 2025, the remaining twenty-five percent (25%) of the RSUs vested. 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 4, 2025.

F6 · balance_after: The number of shares of KLA common stock includes 2,396.694 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-104980 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,665.73

F3 · shares: On August 5, 2021, the Reporting Person was granted restricted stock units ("RSUs") for 2,562.000 shares of KLA common stock. On August 5, 2025, the remaining twenty-five percent (25%) of the RSUs vested. 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 4, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 3,196.694 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-104980 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 4,939.971

F1 · shares: On August 5, 2025, the remaining fifty percent (50%) of the performance-based restricted stock units granted on August 5, 2021 vested. 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 4, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 3,836.694 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-104981 · ownership.xml · nonDerivative · entry 2

Khan Ahmad A. · CIK 0001642452 · President, Semi. Prod. & Cust.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,207.477

F3 · shares: On August 5, 2021, the Reporting Person was granted restricted stock units ("RSUs") for 6,727.000 shares of KLA common stock. On August 5, 2025, the remaining twenty-five percent (25%) of the RSUs vested. 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 4, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 7,203.412 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-104981 · ownership.xml · nonDerivative · entry 1

Khan Ahmad A. · CIK 0001642452 · President, Semi. Prod. & Cust.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 25,040.917

F1 · shares: On August 5, 2025, the remaining fifty percent (50%) of the performance-based restricted stock units granted on August 5, 2021 vested. 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 4, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 8,884.412 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-104982 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,164.814

F3 · shares: On August 5, 2021, the Reporting Person was granted restricted stock units ("RSUs") for 6,086.000 shares of KLA common stock. On August 5, 2025, the remaining twenty-five percent (25%) of the RSUs vested. 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 4, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 7,128.412 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-104982 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,918.926

F1 · shares: On August 5, 2025, the remaining fifty percent (50%) of the performance-based restricted stock units granted on August 5, 2021 vested. 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 4, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 8,649.412 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-104983 · ownership.xml · nonDerivative · entry 2

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,382.733

F3 · shares: On August 5, 2021, the Reporting Person was granted restricted stock units ("RSUs") for 2,562.000 shares of KLA common stock. On August 5, 2025, the remaining twenty-five percent (25%) of the RSUs vested. 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 4, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 3,885.275 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-104983 · ownership.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,700.045

F1 · shares: On August 5, 2025, the remaining fifty percent (50%) of the performance-based restricted stock units granted on August 5, 2021 vested. 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 4, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 4,525.275 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-104984 · ownership.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 56,836.042

F3 · shares: On August 5, 2021, the Reporting Person was granted restricted stock units ("RSUs") for 17,298.000 shares of KLA common stock. On August 5, 2025, the remaining twenty-five percent (25%) of the RSUs vested. 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 4, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 19,859.011 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-104984 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 58,979.882

F1 · shares: On August 5, 2025, the remaining fifty percent (50%) of the performance-based restricted stock units granted on August 5, 2021 vested. 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 4, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 24,183.011 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-103104 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,182.006

F3 · shares: On August 4, 2022, the Reporting Person was granted restricted stock units ("RSUs") for 5,961.000 shares of KLA common stock. On August 4, 2025, twenty-five percent (25%) of the RSUs vested. 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 1, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 13,213.912 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-103105 · ownership.xml · nonDerivative · entry 2

Khan Ahmad A. · CIK 0001642452 · President, Semi. Prod. & Cust.

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 27,541.981

F3 · shares: On August 4, 2022, the Reporting Person was granted restricted stock units ("RSUs") for 6,260.000 shares of KLA common stock. On August 4, 2025, twenty-five percent (25%) of the RSUs vested. 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 1, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 13,928.912 shares issuable upon vesting of RSUs.