KLAC

SEC source: 0001193125-26-393053 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 706,924.5499

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 386,970.215 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-352187 · ownership.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 77,681.0919

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 14, 2026.

F2 · balance_after: The number of shares of KLA common stock includes 71,918.092 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-349139 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 307,815.4359

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 11, 2026.

F2 · balance_after: The number of shares of KLA common stock includes 128,244.613 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-346811 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 778,943.5499

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 386,970.215 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-346812 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 238,044.9919

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on May 11, 2026.

F2 · balance_after: The number of shares of KLA common stock includes 128,244.613 shares issuable upon vesting of restricted stock units ("RSUs").

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: 0001193125-26-344581 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,242.0399

F1 · 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.

F2 · balance_after: The number of shares of KLA common stock includes 13,180.540 shares issuable upon vesting of restricted stock units ("RSUs").

SEC source: 0001193125-26-342331 · ownership.xml · nonDerivative · entry 2

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 13,771.0399

F3 · 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.

F2 · balance_after: The number of shares of KLA common stock includes 13,180.540 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-342331 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 16,176.0399

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 13,180.540 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-342332 · 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: 339,315.4359

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 128,244.613 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-342337 · 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: 271,224.9919

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 128,244.613 shares issuable upon vesting of 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: 0001193125-26-342340 · ownership.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,267.0919

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 71,918.092 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-342341 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 866,511.5499

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 386,970.215 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340226 · ownership.xml · nonDerivative · entry 5

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 879,273.4429

F7 · shares: On August 6, 2026, the Reporting Person received a grant of RSUs. The RSUs vest 25% annually from the date of grant.

F8 · balance_after: The number of shares of KLA common stock includes 412,710.215 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340226 · ownership.xml · nonDerivative · entry 4

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 838,432.2079

F3 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 5, 2026.

F4 · balance_after: The number of shares of KLA common stock includes 371,868.980 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340226 · ownership.xml · nonDerivative · entry 3

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 884,899.0799

F5 · 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, 93,721.000 shares vested.

F6 · balance_after: The number of shares of KLA common stock includes 465,589.980 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340226 · ownership.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 791,178.0799

F3 · shares: Pursuant to the terms of the grant, shares of KLA common stock were automatically withheld at vesting to cover required tax withholding. The fair market value of KLA common stock used for purposes of calculating the number of shares to be withheld was the closing price of KLA common stock as reported on August 5, 2026.

F4 · balance_after: The number of shares of KLA common stock includes 371,868.980 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340226 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 878,659.5119

F1 · 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 235,250.000 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.

F2 · balance_after: The number of shares of KLA common stock includes 548,313.980 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: 0001193125-26-340228 · ownership.xml · nonDerivative · entry 5

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 343,847.0479

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 137,381.613 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340228 · ownership.xml · nonDerivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 374,822.5009

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, 62,475.700 shares vested.

F8 · balance_after: The number of shares of KLA common stock includes 199,860.313 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340228 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 312,346.8009

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 137,381.613 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340228 · 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: 334,018.2189

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 58,280.000 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 181,094.613 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340232 · ownership.xml · nonDerivative · entry 5

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 140,142.7319

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 77,718.092 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340232 · ownership.xml · nonDerivative · entry 4

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 152,531.4359

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 102,705.392 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340232 · ownership.xml · nonDerivative · entry 3

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 127,544.1359

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 77,718.092 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340232 · ownership.xml · nonDerivative · entry 2

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,398.1609

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 26,490.000 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 97,593.092 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340233 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,696.6309

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 14,230.540 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340233 · 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: 19,061.5979

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 6,360.000 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 19,000.540 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340234 · ownership.xml · nonDerivative · entry 5

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 275,756.6039

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 137,384.613 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340234 · ownership.xml · nonDerivative · entry 4

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 306,732.0569

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, 62,475.700 shares vested.

F8 · balance_after: The number of shares of KLA common stock includes 199,860.313 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340234 · ownership.xml · nonDerivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 244,256.3569

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 137,384.613 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340234 · 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: 265,927.7749

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 58,280.000 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 181,094.913 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-335482 · ownership.xml · nonDerivative · entry 1

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

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 7,972.4479

F1 · shares: This sale was effected pursuant to the terms of a Rule 10b5-1 trading plan adopted by the Reporting Person on Februry 18, 2026.

F2 · balance_after: The number of shares of KLA common stock includes 7,911.390 shares issuable upon vesting of restricted stock units ("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: 0001193125-26-340228 · 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: 246,598.2189

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 93,674.613 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340232 · ownership.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 97,663.1609

F1 · shares: On August 6, 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 57,858.092 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340233 · 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: 9,521.5979

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 9,460.540 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-340234 · 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: 178,507.7749

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 93,674.613 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-332754 · ownership.xml · nonDerivative · entry 2

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 525,784.5119

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 195,438.980 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-332754 · ownership.xml · nonDerivative · entry 1

WALLACE RICHARD P · CIK 0001196898 · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 615,571.4129

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 376,533.980 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-332756 · ownership.xml · nonDerivative · entry 2

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,702.2189

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 41,897.150 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-332756 · ownership.xml · nonDerivative · entry 1

Lorig Brian · CIK 0001697041 · EVP, KLA Global Services

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 92,783.3499

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 64,247.150 shares issuable upon vesting of RSUs.

SEC source: 0001193125-26-332759 · 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: 154,096.9219

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.