Wilkinson Mary Beth

SEC source: 0001193125-26-344579 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 37,032.032

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2026.

F2 · balance_after: The number of shares of KLA common stock includes 36,957.766 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-342339 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 38,693.032

F3 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2026.

F2 · balance_after: The number of shares of KLA common stock includes 36,957.766 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-342339 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 60,524.032

F1 · shares: On August 7, 2025, the Reporting Person was granted restricted stock units ("RSUs") of shares of KLA common stock. On August 7, 2026, 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 6, 2026.

F2 · balance_after: The number of shares of KLA common stock includes 36,957.766 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340227 · ownership.xml · nonDerivative · entry 5

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 61,732.303

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 5, 2026.

F6 · balance_after: The number of shares of KLA common stock includes 39,827.766 shares issuable upon vesting of RSUs

SEC source: 0001193125-26-340227 · 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: 72,251.957

F7 · shares: On August 4, 2022, the Reporting Person was granted PRSUs divided into three tranches. On August 6, 2026, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to the third tranche of these PRSUs were satisfied. On August 6, 2026, 24,987.300 shares vested.

F8 · balance_after: The number of shares of KLA common stock includes 64,815.066 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340227 · 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: 47,264.657

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 5, 2026.

F6 · balance_after: The number of shares of KLA common stock includes 39,827.766 shares issuable upon vesting of RSUs

SEC source: 0001193125-26-340227 · 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: 52,619.778

F3 · shares: On August 3, 2023, in addition to the restricted stock units ("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 16,960.000 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, 2026. On August 6, 2026, 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 6, 2026, and the remaining fifty percent (50%) of the PRSUs will vest on August 3, 2027, subject to the continued service of the Reporting Person.

F4 · balance_after: The number of shares of KLA common stock includes 52,547.766 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-335502 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 22,109.832

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2026.

F2 · balance_after: The number of shares of KLA common stock includes 22,037.820 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-340227 · 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: 27,179.778

F1 · shares: On August 5, 2026, the Reporting Person received a grant of RSUs. The RSUs vest 25% annually from the date of grant.

F2 · balance_after: The number of shares of KLA common stock includes 27,107.766 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-333148 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 35,911.832

F5 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2026.

F4 · balance_after: The number of shares of KLA common stock includes 22,037.820 shares issuable upon vesting of restricted stock units RSUs.

SEC source: 0001193125-26-333148 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 40,206.832

F3 · 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 of KLA common stock. 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. The remaining fifty percent (50%) of the PRSUs vested on August 4, 2026. 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, 2026.

F4 · balance_after: The number of shares of KLA common stock includes 22,037.820 shares issuable upon vesting of restricted stock units RSUs.

SEC source: 0001193125-26-333148 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 47,734.313

F1 · shares: On August 4, 2022, the Reporting Person was granted restricted stock units ("RSUs") of shares of KLA common stock. On August 4, 2026, 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 3, 2026.

F2 · balance_after: The number of shares of KLA common stock includes 39,917.820 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-330534 · 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: 50,243.474

F3 · shares: On August 3, 2023, the Reporting Person was granted RSUs of shares of KLA common stock. On August 3, 2026, 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 July 31, 2026.

F4 · balance_after: The number of shares of KLA common stock includes 45,877.820 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-330534 · 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: 52,028.514

F1 · shares: On August 1, 2024, the Reporting Person was granted restricted stock units ("RSUs") of shares of KLA common stock. On August 1, 2026, 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 July 31, 2026.

F2 · balance_after: The number of shares of KLA common stock includes 50,117.820 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-294468 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 53,367.295

F4 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2026.

F3 · balance_after: The number of shares of KLA common stock includes 53,297.820 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-294468 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 67,759.295

F1 · shares: On August 4, 2022, the reporting person was granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") divided into three tranches. 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. On June 30, 2026, 24,651.900 shares vested.

F2 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld to cover required tax withholding on the 24,651.900 shares of KLA common stock that vested. 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 June 29, 2026.

F3 · balance_after: The number of shares of KLA common stock includes 53,297.820 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: 0000950170-25-105818 · 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: 0000950170-25-104980 · 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: 0000950170-25-103108 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 5,763.334

F5 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on Februry 7, 2025.

F4 · balance_after: The number of shares of KLA common stock includes 5,758.194 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-103108 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,526.334

F3 · shares: On August 4, 2022, the Reporting Person was granted restricted stock units ("RSUs") for 2,384.000 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 5,758.194 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-103108 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,781.72

F1 · shares: On August 3, 2023, the Reporting Person was granted restricted stock units ("RSUs") for 1,695.000 shares of KLA common stock. On August 3, 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.

F2 · balance_after: The number of shares of KLA common stock includes 6,354.194 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-102997 · 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: 6,963.404

F1 · shares: On August 1, 2024, the Reporting Person was granted restricted stock units ("RSUs") for 1,271.694 shares of KLA common stock. On August 1, 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 July 31, 2025.

F2 · balance_after: The number of shares of KLA common stock includes 6,778.194 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-092936 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,099.667

F4 · 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.

F3 · balance_after: The number of shares of KLA common stock includes 7,096.194 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-092936 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 8,419.667

F1 · shares: On August 4, 2022, the reporting person was granted RSUs with both performance-based and service-based vesting conditions ("PRSUs") divided into three tranches. The first tranche was for a target number of shares equal to 1,678.000 shares of KLA common stock. The maximum number of shares issuable under the first tranche of these PRSUs is 250% of the target shares if the sum of KLA's non-GAAP earnings per diluted share for fiscal year 2023 and fiscal year 2024 equaled or exceeded $56.62. On August 1, 2024, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to the first tranche of these PRSUs were satisfied at 131% of target shares. The first tranche of these PRSUs (2,198.180) vested on June 30, 2025, and were subject to the continued service of the reporting person.

F2 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld to cover required tax withholding on the 2,198.180 shares of KLA common stock that vested. 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 June 30, 2025.

F3 · balance_after: The number of shares of KLA common stock includes 7,096.194 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-24-091758 · ownership.xml · nonDerivative · entry 7

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,297.507

F11 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2024.

F10 · balance_after: The number of shares of KLA common stock includes 9,294.374 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-091758 · ownership.xml · nonDerivative · entry 6

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,539.507

F11 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 2, 2024.

F10 · balance_after: The number of shares of KLA common stock includes 9,294.374 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-091758 · ownership.xml · nonDerivative · entry 5

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 11,908.507

F9 · shares: On August 5, 2024, 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 to cover required tax withholding. The fair 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 2, 2024.

F10 · balance_after: The number of shares of KLA common stock includes 9,294.374 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-091758 · ownership.xml · nonDerivative · entry 4

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,623.833

F7 · 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, 2024, 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 2, 2024.

F8 · balance_after: The number of shares of KLA common stock includes 11,217.374 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-091758 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,967.062

F5 · 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, 2024, 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 2, 2024.

F6 · balance_after: The number of shares of KLA common stock includes 12,018.374 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-091758 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,241.303

F3 · shares: On August 4, 2022, the Reporting Person was granted restricted stock units ("RSUs") for 2,384.000 shares of KLA common stock. On August 4, 2024, 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 2, 2024.

F4 · balance_after: The number of shares of KLA common stock includes 12,658.374 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-091758 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,496.69

F1 · shares: On August 3, 2023, the Reporting Person was granted restricted stock units ("RSUs") for 1,695.000 shares of KLA common stock. On August 3, 2024, 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 2, 2024.

F2 · balance_after: The number of shares of KLA common stock includes 13,254.374 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-090720 · 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: 13,678.374

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 first tranche was for a target number of shares equal to 1,678.000 shares of KLA common stock. The maximum number of shares issuable under the first tranche of these PRSUs is 250% of the target shares if the sum of KLA's non-GAAP earnings per diluted share for fiscal year 2023 and fiscal year 2024 equaled or exceeded $56.62. On August 1, 2024, KLA's Board of Directors and Compensation and Talent Committee determined that the performance conditions applicable to the first tranche of these PRSUs were satisfied at 131% of target shares. The first tranche of these PRSUs will vest on June 30, 2025, subject to continued service of the reporting person.

F6 · balance_after: The number of shares of KLA common stock includes 13,678.374 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-090720 · 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: 11,480.194

F3 · shares: On August 5, 2021, 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 2,563.000 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, 2024. On August 1, 2024, 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 on August 5, 2024, and the remaining 50% of the PRSUs will vest on August 5, 2025, subject to continued service of the reporting person.

F4 · balance_after: The number of shares of KLA common stock includes 11,480.194 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-090720 · 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: 7,635.694

F1 · shares: On August 1, 2024, the Reporting Person received a grant of restricted stock units ("RSUs"). The RSUs vest 25% annually from the date of grant.

F2 · balance_after: The number of shares of KLA common stock includes 7,635.694 shares issuable upon vesting of RSUs.

SEC source: 0000950170-23-064794 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,364

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on January 30, 2023.

F2 · balance_after: The number of shares of KLA common stock includes 6,364 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-23-049692 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 6,794

F3 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on January 30, 2023.

F2 · balance_after: The number of shares of KLA common stock includes 6,364 shares issuable upon vesting of RSUs.

SEC source: 0000950170-23-049692 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 9,949

F1 · shares: On September 21, 2020, the Reporting Person was granted restricted stock units ("RSUs") for 16,565 shares of KLA common stock. On September 21, 2023, one-third 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 September 21, 2023.

F2 · balance_after: The number of shares of KLA common stock includes 6,364 shares issuable upon vesting of RSUs.

SEC source: 0001209191-23-045162 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,315

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on January 30, 2023.

F2 · balance_after: The number of shares of KLA common stock includes 11,885 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001209191-23-044951 · doc4.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,185

F5 · shares: On August 5, 2021, the Reporting Person was granted RSUs for 2,562 shares of KLA common stock. On August 5, 2023, 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, 2023.

F6 · balance_after: The number of shares of KLA common stock includes 11,885 shares issuable upon vesting of RSUs.

SEC source: 0001209191-23-044951 · doc4.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,413

F3 · shares: On August 5, 2021, the Reporting Person was granted RSUs for 3,203 shares of KLA common stock. On August 5, 2023, 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, 2023.

F4 · balance_after: The number of shares of KLA common stock includes 12,526 shares issuable upon vesting of RSUs.

SEC source: 0001209191-23-044951 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,757

F1 · shares: On August 4, 2022, the Reporting Person was granted restricted stock units ("RSUs") for 2,384 shares of KLA common stock. On August 4, 2023, 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, 2023.

F2 · balance_after: The number of shares of KLA common stock includes 13,327 shares issuable upon vesting of RSUs.

SEC source: 0001209191-23-044780 · doc4.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,923

F1 · shares: On August 3, 2023, the Reporting Person received a grant of restricted stock units ("RSUs"). The RSUs vest 25% annually from the date of grant.

F2 · balance_after: The number of shares of KLA common stock includes 13,923 shares issuable upon vesting of RSUs.

SEC source: 0001209191-22-051129 · doc4.xml · nonDerivative · entry 2

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 12,228

F3 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on January 31, 2022.

F2 · balance_after: The number of shares of KLA common stock includes 12,228 shares issuable upon vesting of RSUs.