Western Digital completed the separation of its Flash business into Sandisk Corporation on February 21, 2025. Western Digital continued as an HDD-focused company, while Sandisk became a separate public company focused on Flash. Western Digital stockholders of record on February 12, 2025 received a pro rata distribution representing 80.1% of Sandisk’s outstanding shares.
What happened in the Western Digital–Sandisk split?
Western Digital announced plans in October 2023 to separate its HDD and Flash businesses. The transaction was completed on February 21, 2025, creating two independent public companies. Western Digital’s filing describes the distribution of Sandisk shares to stockholders of record on February 12, 2025: those stockholders received, pro rata, 80.1% of Sandisk’s outstanding shares. Western Digital’s separation filing
Sandisk also announced its return to Nasdaq as a standalone company after the separation. Sandisk’s listing announcement
What does each company do now?
| Company | Business focus after separation | Reporting |
|---|---|---|
| Western Digital | HDD business | Reports its own results; Sandisk’s post-separation results are no longer consolidated into Western Digital’s financial and operating results. Western Digital filing |
| Sandisk | Flash business | Operates and reports as a separate public company. Western Digital’s separation filing |
Sandisk described the transaction as a “significant milestone in our reemergence as a standalone global leader in flash-based storage solutions.” That wording comes from the company’s 2025 proxy statement, in a letter from its Chair and Lead Independent Director; “reemergence” is Sandisk’s characterization of its return as an independent company. Sandisk 2025 proxy statement
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Why did Western Digital split the businesses?
Western Digital said separate companies could pursue business-specific product development and opportunities, as well as their own capital structures and capital allocation. Those are management’s stated reasons for the transaction, not evidence by themselves that the split has improved either company’s results or shareholder value. Western Digital’s separation filing
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.What does the split mean for investors?
The share distribution is the key direct consequence for eligible Western Digital stockholders: the company distributed 80.1% of Sandisk’s outstanding shares pro rata. The cited separation materials establish the transaction’s structure and business allocation, but they do not establish whether the split created long-term value for shareholders.
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The two companies now report separately, so their results and capital decisions can be assessed on their own. For example, Sandisk’s August 5, 2026 fiscal fourth-quarter release said it had signed five additional New Business Model agreements since those announced on its April earnings call—three with new customers and two expanding prior agreements. That is Sandisk’s reported commercial activity, not independent evidence of the agreements’ eventual market impact. Sandisk fiscal 2026 fourth-quarter release
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Rank #3
- Get NVMe solid state performance with up to 1050MB/s read and 1000MB/s write speeds in a portable, high-capacity drive(1) (Based on internal testing; performance may be lower depending on host device & other factors. 1MB=1,000,000 bytes.)
- Up to 3-meter drop protection and IP65 water and dust resistance mean this tough drive can take a beating(3) (Previously rated for 2-meter drop protection and IP55 rating. Now qualified for the higher, stated specs.)
- Use the handy carabiner loop to secure it to your belt loop or backpack for extra peace of mind.
- Help keep private content private with the included password protection featuring 256‐bit AES hardware encryption.(3)
- Easily manage files and automatically free up space with the SanDisk Memory Zone app.(5)
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