Company: PENG
Filing Date: 2025-03-24
Form Type: DEFA14A
Source: 0001193125-25-060911
Chunk: 1

Company: Penguin Solutions, Inc.
Filing Date: 2025-03-24
Form: DEFA14A
Chunk 1
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.12b-2of 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. |

Penguin Solutions, Inc. issued a press release on March 24, 2025, announcing a plan to redomicile the parent company of the Penguin Solutions group of companies from the Cayman Islands to the United States. A copy of the press release is attached as Exhibit 99.1 and is incorporated herein by reference.

| Item 9.01 | Financial Statements and Exhibits. |

(d) Exhibits

| Exhibit 
 No.     
 99.1    |     | Description                                                                  
 Press Release dated March 24, 2025.                                          |
|:--------|:----|:-----------------------------------------------------------------------------|
| 104     |     | Cover Page Interactive Data File (embedded within the Inline XBRL document). |

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

| Date: March 24, 2025 |     | Penguin Solutions, Inc. |     |                                               |
|:---------------------|:----|:------------------------|:----|:----------------------------------------------|
|                      |     | By:                     |     | /s/ Anne Kuykendall                           |
|                      |     |                         |     | Anne Kuykendall                               |
|                      |     |                         |     | Senior Vice President and Chief Legal Officer |

Exhibit 99.1

Penguin Solutions, Inc. Announces Proposed Redomiciliation to the United States

Milipitas, California – March 24, 2025 – Penguin Solutions, Inc. (Nasdaq: PENG) (“Penguin Solutions” or the “Company”), a
leading designer and developer of high-performance, high-availability enterprise solutions, today announced that its Board of Directors (the “Board”) has approved a plan to redomicile the parent company of the Penguin Solutions group of
companies from the Cayman Islands to the United States.

“While our incorporation in the Cayman Islands has served us and our shareholders well for
many years, we believe the redomiciliation