KLAC

SEC source: 0001193125-26-332759 · 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: 177,374.7329

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 116,213.760 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-332760 · 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: 222,187.3659

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 69,263.760 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-332760 · 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: 244,357.0639

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 113,978.760 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-333146 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 12,476.4479

F5 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 18, 2026.

F4 · balance_after: The number of shares of KLA common stock includes 7,911.390 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-333146 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 14,041.4479

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 7,911.390 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-333146 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 17,365.7869

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 14,616.390 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: 0001193125-26-330525 · 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: 251,744.4839

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 128,878.760 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-330526 · 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: 18,471.4209

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 16,846.390 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-330527 · ownership.xml · nonDerivative · entry 2

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 96,477.0609

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 71,697.150 shares issuable upon vesting of restricted stock units RSUs.

SEC source: 0001193125-26-330529 · 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: 185,134.0039

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 131,863.760 shares issuable upon vesting of restricted stock units 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: 0001193125-26-330536 · ownership.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 635,522.4059

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 416,773.980 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-330525 · 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: 258,968.2899

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 143,448.760 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-330526 · 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: 19,201.6059

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 18,436.390 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-330527 · ownership.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,759.2579

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 78,317.150 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-330529 · 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: 192,357.8099

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 146,433.760 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: 0001193125-26-330536 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 654,962.7249

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 455,983.980 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-296166 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 19,575.0699

F4 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on February 18, 2026.

F3 · balance_after: The number of shares of KLA common stock includes 19,516.390 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-296169 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 263,472.1969

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 152,532.880 shares issuable upon vesting of restricted stock units ("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: 0001193125-26-294467 · 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: 196,861.7169

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. 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, 61,651.800 shares vested.

F5 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld to cover required tax withholding on the 61,651.800 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.

F6 · balance_after: The number of shares of KLA common stock includes 155,517.880 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-294467 · 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: 227,428.6799

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, 2026, 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 217,169.680 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: 0001193125-26-294470 · ownership.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 668,175.7959

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. 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, 92,477.700 shares vested.

F5 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld to cover required tax withholding on the 92,477.700 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

F6 · balance_after: The number of shares of KLA common stock includes 482,633.980 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-294470 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 714,026.2399

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, 2026, 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 575,111.680 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-294471 · 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: 291,173.1969

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. 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, 61,651.800 shares vested.

F5 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld to cover required tax withholding on the 61,651.800 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.

F6 · balance_after: The number of shares of KLA common stock includes 152,532.880 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-294471 · 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: 321,740.1599

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, 2026, 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 214,184.680 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-294472 · ownership.xml · nonDerivative · entry 2

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 102,763.8069

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. 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.

F5 · 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.

F6 · balance_after: The number of shares of KLA common stock includes 84,377.150 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-294472 · ownership.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,986.2199

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, 2026, 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 109,029.050 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-296166 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 19,771.0699

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, 2026, 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 19,516.390 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-268015 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 71,383.008

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 19, 2025.

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: 0001193125-26-219897 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 75,895.008

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on November 19, 2025.

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

SEC source: 0001193125-26-219364 · ownership.xml · nonDerivative · entry 1

Hanley Jeneanne Michelle · CIK 0001733201 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,550.732

F1 · price: Represents the weighted average sales price for the shares. The sales prices ranged from $1,874.64 to $1,875.08. The Reporting Person will provide upon request full information regarding the number of shares sold at each separate price.

F2 · balance_after: The number of shares of KLA common stock includes 203.732 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-219368 · 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: 1,957.491

F1 · 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: 0001193125-26-041154 · ownership.xml · nonDerivative · entry 1

CALDERONI ROBERT · CIK 0001183228 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,700.971

F1 · shares: On February 5, 2026, the Reporting Person received a grant of restricted stock units ("RSUs") for 11.269 shares of KLA common stock. The RSUs vest on the earliest to occur of (i) February 5, 2027, (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 267.971 shares issuable upon vesting of RSUs.

SEC source: 0001193125-25-324797 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,154.4

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: 0001193125-25-282899 · 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: 22,723.252

F1 · 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: 0001193125-25-280130 · ownership.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 80,407.008

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 restriced stock units ("RSUs").

SEC source: 0001193125-25-280130 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 81,211.008

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 restriced stock units ("RSUs").

SEC source: 0001193125-25-272302 · ownership.xml · nonDerivative · entry 1

Samath Jamie · CIK 0001330269 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 377.732

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: 0001193125-25-272304 · ownership.xml · nonDerivative · entry 1

Hanley Jeneanne Michelle · CIK 0001733201 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,100.732

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: 0001193125-25-272307 · ownership.xml · nonDerivative · entry 1

KENNEDY KEVIN · CIK 0001182379 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,214.732

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: 0001193125-25-272308 · ownership.xml · nonDerivative · entry 1

PENG VICTOR · CIK 0001182953 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,750.732

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: 0001193125-25-272310 · ownership.xml · nonDerivative · entry 1

Taylor Susan J.S. · CIK 0001541774 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 369.732

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: 0001193125-25-272314 · ownership.xml · nonDerivative · entry 1

McMullen Michael R. · CIK 0001418949 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,178.732

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: 0001193125-25-272315 · ownership.xml · nonDerivative · entry 1

CALDERONI ROBERT · CIK 0001183228 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,689.702

F1 · shares: On November 5, 2025, the Reporting Person received an automatic grant of restricted stock units ("RSUs") for 256.702 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 256.702 shares issuable upon vesting of RSUs.