Company: PENG
Filing Date: 2025-06-30
Form Type: 15-12G
Source: 0001193125-25-152899
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Company: Penguin Solutions, Inc.
Filing Date: 2025-06-30
Form: 15-12G
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 15 CERTIFICATION AND NOTICE OF TERMINATION OF REGISTRATION UNDER SECTION 12(g) OF THE SECURITIES EXCHANGE ACT OF 1934 OR SUSPENSION OF DUTY TO FILE REPORTS UNDER SECTIONS 13 AND 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 Commission File Number: 001-38102 Penguin Solutions, Inc. (Exact name of registrant as specified in its charter) c/o Walkers Corporate Limited 190 Elgin Avenue George Town, Grand Cayman Cayman Islands (510) 623-1231 (Address, including zip code, and telephone number, including area code, of registrant’s principal executive offices) Ordinary Shares (Title of each class of securities covered by this Form) None (Titles of all other classes of securities for which a duty to file reports under section 13(a) or 15(d) remains) Please place an X in the box(es) to designate the appropriate rule provision(s) relied upon to terminate or suspend the duty to file reports:

| Rule 12g-4(a)(1)     |     | ☒ |
| Rule 12g-4(a)(2)     |     | ☐ |
| Rule 12h-3(b)(1)(i)  |     | ☒ |
| Rule 12h-3(b)(1)(ii) |     | ☐ |
| Rule 15d-6           |     | ☐ |

Approximate number of holders of record as of the certification or notice date: Ordinary Shares: 1 Pursuant to the requirements of the Securities Exchange Act of 1934, Penguin Solutions, Inc. has caused this certification/notice to be signed on its behalf by the undersigned duly authorized person.

| Date: June 30, 2025 |     | Penguin Solutions, Inc. 
 By:                     |     | /s/ Nate Olmstead |
|:--------------------|:----|:------------------------|:----|:------------------|
|                     |     |                         |     | Nate Olmstead     |
|                     |     |                         |     | President         |