# EDGAR Filing Document

**Accession Number:** 0002023554
**File Stem:** 0001193125-26-224694
**Filing Date:** 2026-5
**Character Count:** 9955
**Document Hash:** b8059b09cdadc7008e48e509ad5ba660
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-224694.hdr.sgml**: 20260515

**ACCESSION NUMBER**: 0001193125-26-224694

**CONFORMED SUBMISSION TYPE**: 8-K

**PUBLIC DOCUMENT COUNT**: 13

**CONFORMED PERIOD OF REPORT**: 20260514

**ITEM INFORMATION**: Other Events

**ITEM INFORMATION**: Financial Statements and Exhibits

**FILED AS OF DATE**: 20260515

**DATE AS OF CHANGE**: 20260514

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Sandisk Corp
- **CENTRAL INDEX KEY:** 0002023554
- **STANDARD INDUSTRIAL CLASSIFICATION:** COMPUTER STORAGE DEVICES [3572]
- **ORGANIZATION NAME:** 06 Technology
- **EIN:** 991508671
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0628

**FILING VALUES:**
- **FORM TYPE:** 8-K
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-42420
- **FILM NUMBER:** 26981520

**BUSINESS ADDRESS:**
- **STREET 1:** 951 SANDISK DRIVE
- **CITY:** MILPITAS
- **STATE:** CA
- **ZIP:** 95035
- **BUSINESS PHONE:** 408-801-1000

**MAIL ADDRESS:**
- **STREET 1:** 951 SANDISK DRIVE
- **CITY:** MILPITAS
- **STATE:** CA
- **ZIP:** 95035

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SanDisk Corp
- **DATE OF NAME CHANGE:** 20240529

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** SanDisk Corp/DE
- **DATE OF NAME CHANGE:** 20240515

?xml version='1.0' encoding='ASCII'? 8-K

### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### Washington, D.C. 20549

### FORM 8-K

#### CURRENT REPORT

#### Pursuant to Section 13 or 15(d)

#### of the Securities Exchange Act of 1934

#### Date of Report (Date of earliest event reported): May 14, 2026

## Sandisk Corporation

#### (Exact Name of Registrant as Specified in its Charter)

---

| | | |
|:---|:---|:---|
| **Delaware** | **001-42420** | **99-1508671** |
| **(State or Other Jurisdiction**<br> **of Incorporation)** | **(Commission**<br> **File Number)** | **(I.R.S. Employer**<br> **Identification No.)** |

---

---

| | |
|:---|:---|
| **951 Sandisk Drive** |  |
| **Milpitas** |  |
| **California** | **95035** |
| **(Address of Principal Executive Offices)** | **(Zip Code)** |

---

(408) 801-1000

#### (Registrant's Telephone Number, Including Area Code)

#### Not applicable

#### (Former Name or Former Address, if Changed Since Last Report)
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (*see* General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)

☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)

☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))

☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

---

| | | |
|:---|:---|:---|
| **Title of each class** | **Trading**<br> **Symbol(s)** | **Name of each exchange**<br> **on which registered** |
| Common Stock, $0.01 Par Value Per Share | SNDK | The Nasdaq Stock Market LLC |
|  |  | (Nasdaq Global Select Market) |

---

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

------

---

| | |
|:---|:---|
| **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.**  |

---

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(d) Exhibits

---

| | |
|:---|:---|
| 99.1 | [Press release issued by Sandisk Corporation on May 14, 2026.](d157363dex991.htm) |
| 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<br>and Secretary |

---

Date: May 14, 2026

## Exhibit 99.1

**Exhibit 99.1**![LOGO](g157363g0514151838882.jpg)

**Sandisk Recommends Stockholders Reject "Mini-Tender" Offer by Tutanota LLC** 

MILPITAS, Calif. - May 14, 2026 - Sandisk Corporation (Nasdaq: SNDK) ("Sandisk") today announced that it recently became aware of an unsolicited "mini-tender" offer by Tutanota LLC ("Tutanota") to purchase up to 100,000 shares of Sandisk'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 Sandisk's common stock as of April 24, 2026.

The offer price of $1,150.00 per share is conditioned upon, among other things, the closing price per share of Sandisk's common stock exceeding $1,150.00 per share on the last trading day before the offer expires. This means that unless this condition is waived by Tutanota, Sandisk 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 offering documents prior to the expiration of the offer, which is currently scheduled for 5:00 p.m., Eastern Time, on Wednesday, May 20, 2026, unless extended. Sandisk recommends that stockholders who have not responded to Tutanota's offer take no action.

Sandisk 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 documentation.

Tutanota has made similar unsolicited mini-tender offers for stock of other public companies. As Tutanota's mini-tender offer is for less than five (5) percent of Sandisk'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 guidance to investors on mini-tenders is available at <u>https://www.sec.gov/investor/pubs/minitend.htm</u>.

Sandisk 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 <u>https://www.sec.gov/divisions/marketreg/minitenders/sia072401.htm</u> and the NASD Notice to Members 99-53 issued in July 1999 regarding guidance to members forwarding mini-tender offers to their customers, which can be found at <u>https://www.sec.gov/divisions/marketreg/minitenders/sia072401.htm</u>.

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.

Sandisk requests that a copy of this news release be included with all distributions of materials relating to Tutanota's mini-tender offer related to Sandisk's common stock.

**About Sandisk** 

Sandisk (Nasdaq: SNDK) delivers innovative Flash solutions and advanced memory technologies that meet people and businesses at the intersection of their aspirations and the moment, enabling them to keep moving and pushing possibility forward. Follow Sandisk on Instagram, Facebook, X, LinkedIn, and YouTube. Join TeamSandisk on Instagram.

<sup>©</sup> 2026 Sandisk Corporation or its affiliates. All rights reserved. Sandisk and the Sandisk logo are registered trademarks or trademarks of Sandisk Corporation or its affiliates in the US and/or other countries. All other marks are property of their respective owners.

------

---

| |
|:---|
|  **Company Contacts:** |
|  **Sandisk Corporation** |

---

---

| | |
|:---|:---|
|  **Investor Contact:** | **Media Contact:** |
|  **Ivan Donaldson** | Media Relations |
|  E: ivan.donaldson@sandisk.com | mediainquiries@sandisk.com |
|  investors@sandisk.com |  |

---