KLAC

SEC source: 0000950170-25-103106 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,126.081

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 1,824.000 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-103106 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,446.081

F3 · shares: On August 4, 2022, the Reporting Person was granted restricted stock units ("RSUs") for 894.000 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 1,824.000 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-103107 · ownership.xml · nonDerivative · entry 2

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,652.725

F3 · shares: On August 4, 2022, the Reporting Person was granted restricted stock units ("RSUs") for 2,980.000 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 6,446.775 shares issuable upon vesting of 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: 0000950170-25-103109 · ownership.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,627.903

F3 · shares: On August 4, 2022, the Reporting Person was granted restricted stock units ("RSUs") for 16,097.000 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 43,642.511 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-103104 · 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: 23,920.749

F1 · shares: On August 3, 2023, the Reporting Person was granted restricted stock units ("RSUs") for 5,828.000 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 14,703.912 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-103105 · 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: 28,317.908

F1 · shares: On August 3, 2023, the Reporting Person was granted restricted stock units ("RSUs") for 5,828.000 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 15,493.912 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-103106 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,523.195

F1 · shares: On August 3, 2023, the Reporting Person was granted restricted stock units ("RSUs") for 635.000 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 2,047.000 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-103107 · ownership.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,022.097

F1 · shares: On August 3, 2023, the Reporting Person was granted restricted stock units ("RSUs") for 2,649.000 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 7,191.775 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: 0000950170-25-103109 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,623.003

F1 · shares: On August 3, 2023, the Reporting Person was granted restricted stock units ("RSUs") for 15,684.000 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 47,666.511 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-102994 · 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: 24,643.13

F1 · shares: On August 1, 2024, the Reporting Person was granted restricted stock units ("RSUs") for 3,633.412 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 16,160.912 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-102995 · 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: 2,578.178

F1 · shares: On August 1, 2024, the Reporting Person was granted restricted stock units ("RSUs") for 432.981 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 2,206.000 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-102996 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 72,567.035

F1 · shares: On August 1, 2024, the Reporting Person was granted restricted stock units ("RSUs") for 10,658.011 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 51,587.511 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: 0000950170-25-102998 · 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: 29,040.289

F1 · shares: On August 1, 2024, the Reporting Person was granted restricted stock units ("RSUs") for 3,633.412 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 16,950.912 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-102999 · ownership.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,350.317

F1 · shares: On August 1, 2024, the Reporting Person was granted restricted stock units ("RSUs") for 2,422.275 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 7,853.775 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-093834 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,615.864

F4 · 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.

F3 · balance_after: The number of shares of KLA common stock includes 2,314.981 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-092932 · ownership.xml · nonDerivative · entry 2

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,650.772

F4 · 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.

F5 · 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.

F6 · balance_after: The number of shares of KLA common stock includes 8,459.775 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-092932 · ownership.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,702.847

F1 · shares: Purchased under the registrant's employee stock purchase plan.

F2 · price: Represents 85% of the closing price of the registrant's common stock on January 2, 2025, the first day of the offering period under the employee stock purchase plan.

F3 · balance_after: The number of shares of KLA common stock includes 10,657.955 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-092933 · 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: 25,093.813

F4 · 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 4,194.000 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 (5,494.140) vested on June 30, 2025, and were subject to the continued service of the reporting person.

F5 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld to cover required tax withholding on the 5,494.140 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.

F6 · balance_after: The number of shares of KLA common stock includes 17,069.912 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-092933 · 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: 27,817.808

F1 · shares: Purchased under the registrant's employee stock purchase plan.

F2 · price: Represents 85% of the closing price of the registrant's common stock on January 2, 2025, the first day of the offering period under the employee stock purchase plan.

F3 · balance_after: The number of shares of KLA common stock includes 22,564.052 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-092934 · 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: 29,490.972

F4 · 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 4,194.000 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 (5,494.140) vested on June 30, 2025, and were subject to the continued service of the reporting person.

F5 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld to cover required tax withholding on the 5,494.140 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.

F6 · balance_after: The number of shares of KLA common stock includes 17,859.912 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-092934 · 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: 32,214.967

F1 · shares: Purchased under the registrant's employee stock purchase plan.

F2 · price: Represents 85% of the closing price of the registrant's common stock on January 2, 2025, the first day of the offering period under the employee stock purchase plan.

F3 · balance_after: The number of shares of KLA common stock includes 23,354.052 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-092935 · ownership.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 73,888.342

F4 · 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 6,291.000 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 (8,241.210) vested on June 30, 2025, and were subject to the continued service of the reporting person.

F5 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld to cover required tax withholding on the 8.241.210 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.

F6 · balance_after: The number of shares of KLA common stock includes 54,252.511 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-092935 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 77,974.334

F1 · shares: Purchased under the registrant's employee stock purchase plan.

F2 · price: Represents 85% of the closing price of the registrant's common stock on January 2, 2025, the first day of the offering period under the employee stock purchase plan.

F3 · balance_after: The number of shares of KLA common stock includes 62,493.721 shares issuable upon vesting of restricted stock units ("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: 0000950170-25-093834 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 2,654.864

F1 · shares: Purchased under the registrant's employee stock purchase plan.

F2 · price: Represents 85% of the closing price of the registrant's common stock on January 2, 2025, the first day of the offering period under the employee stock purchase plan.

F3 · balance_after: The number of shares of KLA common stock includes 2,314.981 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-077681 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 27,778.539

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on April 30, 2024.

F2 · balance_after: The number of shares of KLA common stock includes 22,564.052 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-069235 · ownership.xml · nonDerivative · entry 1

Taylor Susan J.S. · CIK 0001541774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 166

F1 · shares: On May 8, 2025, the Reporting Person received a pro-rated annual outside director grant of restricted stock units ("RSUs") for 166 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) November 6, 2025, (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 166 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-066904 · ownership.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 77,935.065

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 62,493.721 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-066904 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 78,740.065

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 62,493.721 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-062787 · ownership.xml · nonDerivative · entry 1

Samath Jamie · CIK 0001330269 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 174

F1 · shares: On April 30, 2025, the Reporting Person received a pro-rated annual outside director grant of restricted stock units ("RSUs") for 174 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) November 6, 2025, (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 174 shares issuable upon vesting of RSUs.

SEC source: 0000950170-25-046045 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 28,797.539

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on April 30, 2024.

F2 · balance_after: The number of shares of KLA common stock includes 22,564.052 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-25-019860 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 89,542.065

F1 · shares: This gift was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 4, 2024.

F2 · balance_after: The number of shares of KLA common stock includes 62,493.721 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-24-127026 · ownership.xml · nonDerivative · entry 3

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Indirect · By Trust

Disclosed balance after: 0

F1 · shares: This gift was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 27, 2023.

F4 · ownership.nature: Shares held under the Wallace Living Trust u/a/d 03/27/01, as amended, a trust of which the Reporting Person is a trustee and beneficiary.

SEC source: 0000950170-24-127026 · ownership.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 90,347.065

F3 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 27, 2023.

F2 · balance_after: The number of shares of KLA common stock includes 62,493.721 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-24-127026 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 104,653.065

F1 · shares: This gift was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 27, 2023.

F2 · balance_after: The number of shares of KLA common stock includes 62,493.721 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-24-124048 · ownership.xml · nonDerivative · entry 1

CALDERONI ROBERT · CIK 0001183228 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,433

F1 · shares: On November 6, 2024, the Reporting Person received an automatic grant of restricted stock units ("RSUs") for 433 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) November 6, 2025, (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 433 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-124049 · ownership.xml · nonDerivative · entry 1

Higashi Emiko · CIK 0001318086 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,766

F1 · shares: On November 6, 2024, the Reporting Person received an automatic grant of restricted stock units ("RSUs") for 350 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) November 6, 2025, (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 350 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-124050 · ownership.xml · nonDerivative · entry 1

Hanley Jeneanne Michelle · CIK 0001733201 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,897

F1 · shares: On November 6, 2024, the Reporting Person received an automatic grant of restricted stock units ("RSUs") for 350 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) November 6, 2025, (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 350 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-124051 · ownership.xml · nonDerivative · entry 1

KENNEDY KEVIN · CIK 0001182379 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,011

F1 · shares: On November 6, 2024, the Reporting Person received an automatic grant of restricted stock units ("RSUs") for 350 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) November 6, 2025, (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 350 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-124052 · ownership.xml · nonDerivative · entry 1

RANGO ROBERT A. · CIK 0001464250 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,693

F1 · shares: On November 6, 2024, the Reporting Person received an automatic grant of restricted stock units ("RSUs") for 350 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) November 6, 2025, (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 350 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-124053 · ownership.xml · nonDerivative · entry 1

McMullen Michael R. · CIK 0001418949 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 975

F1 · shares: On November 6, 2024, the Reporting Person received an automatic grant of restricted stock units ("RSUs") for 350 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) November 6, 2025, (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 350 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-124054 · ownership.xml · nonDerivative · entry 1

PENG VICTOR · CIK 0001182953 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,547

F1 · shares: On November 6, 2024, the Reporting Person received an automatic grant of restricted stock units ("RSUs") for 350 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) November 6, 2025, (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 350 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-124056 · ownership.xml · nonDerivative · entry 1

MOORE GARY B · CIK 0001493191 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,028

F1 · shares: On November 6, 2024, the Reporting Person received an automatic grant of restricted stock units ("RSUs") for 350 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) November 6, 2025, (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 350 shares issuable upon vesting of RSUs.

SEC source: 0000950170-24-099484 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,175.698

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, 2024.

F2 · balance_after: The number of shares of KLA common stock includes 23,354.052 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0000950170-24-094737 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 35,805.539

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on April 30, 2024.

F2 · balance_after: The number of shares of KLA common stock includes 22,564.052 shares issuable upon vesting of restricted stock units ("RSUs").