KLA CORPORATION RECOMMENDS STOCKHOLDERS REJECT MINI-TENDER OFFER BY TUTANOTA LLC

MILPITAS, Calif., [August 5, 2026] — KLA Corporation (NASDAQ: KLAC) (“KLA” or the “Company”) announced today that it has received notice of an unsolicited “mini-tender” offer from Tutanota LLC (“Tutanota”) to purchase up to 500,000 shares of KLA’s common stock at a price of $285.00 per share in cash. The offer represents less than 0.04% of KLA’s outstanding common stock.

KLA does not endorse Tutanota’s unsolicited mini-tender offer and is not affiliated or associated in any way with Tutanota, its mini-tender offer, or the offer documents.

The offer price of $285.00 per share is conditioned upon, among other things, the closing price per share of KLA’s common stock exceeding $285.00 per share on the last trading day before the offer expires. This means that unless this condition is waived by Tutanota, KLA stockholders who tender their shares in the offer will receive a below-market price. Tutanota can extend the offer for successive periods of 45 to 180 days, in which case payment would be delayed beyond the scheduled expiration. Stockholders who have already tendered their shares may withdraw them at any time by providing notice in the manner described in the Tutanota offer documents prior to the expiration of the offer, which is currently scheduled for 5:00 p.m., New York City time, on Wednesday, August 12, 2026, unless extended.

As Tutanota’s mini-tender offer is for less than five (5) percent of KLA’s outstanding shares, it is not subject to many of the disclosure and procedural requirements of Securities and Exchange Commission (“SEC”) rules that are designed to protect investors. The SEC has cautioned investors about mini-tender offers, noting that “some bidders make mini-tender offers at below-market prices, hoping that they will catch investors off guard if the investors do not compare the offer price to the current market price.” The SEC’s cautionary advice to investors regarding these offers is on its website at: https://www.sec.gov/investor/pubs/minitend.htm.

Stockholders should obtain current market quotations for their shares, consult with their broker or financial advisor, and exercise caution with respect to Tutanota’s mini-tender offer.

KLA encourages brokers and dealers, as well as other market participants, to review the SEC’s letter regarding broker-dealer mini-tender offer dissemination and disclosures at https://www.sec.gov/divisions/marketreg/minitenders/sia072401.htm.

KLA requests that a copy of this press release be included with all distributions of materials relating to Tutanota’s mini-tender offer related to shares of KLA’s common stock.

About KLA

KLA Corporation (“KLA”) develops industry-leading equipment and services that enable innovation throughout the electronics industry. We provide advanced process control and process-enabling solutions for manufacturing wafers and reticles, integrated circuits, packaging and printed circuit boards. In close collaboration with leading customers across the globe, our expert teams of physicists, engineers, data scientists and problem-solvers design solutions that move the world forward. Investors and others should note that KLA announces material financial information including SEC filings, press releases, public earnings calls and conference webcasts using an investor relations website (ir.kla.com). Additional information may be found at: www.kla.com.

Released August 5, 2026