SNDK: Other company developments

Item 8.01 Other Events. Sandisk Corporation (the “Company”) recently became aware of an unsolicited “mini-tender” offer by Tutanota LLC (“Tutanota”) to purchase up to 100,000 shares of the Company’s common stock at an offer price of $1,150.00 per share. The shares subject to Tutanota’s offer represent less than 0.07% of the Company’s common stock as of April 24, 2026. On May 14, 2026, the Company issued the press release attached to this current report on Form 8-K as Exhibit 99.1 informing its stockholders that the Company does not endorse Tutanota’s unsolicited mini-tender offer and recommending that stockholders do not tender their shares to Tutanota. Stockholders who have already tendered their shares may withdraw them at any time prior to the expiration of the offer in accordance with Tutanota’s offering documents. The offer is currently scheduled to expire at 5:00 p.m. Eastern Time, on Wednesday, May 20, 2026, unless the offer is otherwise extended by Tutanota in its discretion or terminated earlier. The Company is not affiliated or associated in any way with Tutanota, its mini-tender offer, or the offer documentation. Additional information concerning mini-tenders is included in the attached press release. Item 9.01 Financial Statements and Exhibits. (d) Exhibits 99.1 Press release issued by Sandisk Corporation on May 14, 2026. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document). SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. Sandisk Corporation (Registrant) By: /s/ Bernard Shek Bernard Shek Chief Legal Officer and Secretary Date: May 14, 2026