Item 5. MARKET FOR REGISTRANT’S COMMON EQUITY, RELATED STOCKHOLDER MATTERS AND ISSUER PURCHASES OF EQUITY SECURITIES

Our common stock is listed and traded on the NASDAQ Global Select Market of The Nasdaq Stock Market LLC under the symbol “KLAC.”

On June 11, 2026, the Company effected a ten-for-one stock split of its common stock and a proportional increase in the number of authorized shares of common stock. Share and per share information throughout this Annual Report on Form 10-K have been retroactively adjusted to reflect the stock split. The par value per share remains unchanged at $0.001 per share after the stock split.

On August 6, 2026, we announced that our Board of Directors had declared a quarterly cash dividend of $0.230 per share to be paid on September 1, 2026 to stockholders of record as of the close of business on August 17, 2026.

As of August 3, 2026, there were 416 holders of record of our common stock.

Equity Repurchase Plans

The following is a summary of stock repurchases for each month during the fourth quarter of the fiscal year ended June 30, 2026:

(1)Our Board of Directors has authorized a program that permits us to repurchase our common stock, including a $7.00 billion increase approved by the Board on March 11, 2026, which is in addition to the $3.94 billion authorization remaining as of December 31, 2025 under the then existing share repurchase program approved on April 30, 2025. As of June 30, 2026, $9.74 billion remained available for repurchases under our repurchase program. All shares in the table were purchased pursuant to our publicly announced repurchase program.

(2)Our stock repurchase program has no expiration date and may be suspended at any time. Future repurchases of shares of our common stock under our repurchase program may be effected through various different repurchase transaction structures including isolated open market transactions, accelerated share repurchase agreements or systematic repurchase plans, subject to market conditions, applicable legal requirements and other factors.

(3)Average price paid per share and approximate dollar value of shares that may yet be purchased under the plans or programs exclude the excise tax imposed on certain stock repurchases as part of the IRA, or other fees, costs or expenses that may be applicable to the repurchases.

Stock Performance Graph and Cumulative Total Return

Notwithstanding any statement to the contrary in any of our previous or future filings with the SEC, the following information relating to the price performance of our common stock shall not be deemed “filed” with the SEC under the Securities Exchange Act and shall not be incorporated by reference into any such filings.

The following graph compares the cumulative five-year total return attained by stockholders on our common stock relative to the cumulative total returns of the S&P 500 Index and the Philadelphia Semiconductor Index (“PHLX”). The graph tracks the performance of a $100 investment in our common stock and in each of the indices (with the reinvestment of all dividends) from June 30, 2021 to June 30, 2026.

Our fiscal year ends June 30. The comparisons in the graph above are based upon historical data and are not necessarily indicative of, nor intended to forecast, future stock price performance.