Penguin Solutions, Inc.

On July 30, 2026, Tony Frey, our Chief Revenue Officer, adopted a Rule 10b5-1 trading arrangement (the "Frey 10b5-1 Plan") that is intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Exchange Act. The Frey 10b5-1 Plan provides for the sale of up to one-half of the net shares of common stock that may be acquired by Mr. Frey upon the future vesting of up to 28,613 restricted stock units (net of shares of common stock surrendered to Penguin Solutions to satisfy tax withholding obligations in connection with vesting), each at market price, commencing on October 29, 2026 and continuing until all shares are sold or until July 30, 2027, whichever occurs first.

During the fiscal quarter ended August 28, 2026, no other officers or directors of Penguin Solutions adopted orterminated a “Rule 10b5-1 trading arrangement” or a “non-Rule 10b5-1 trading arrangement” (in each case, as defined in Item 408 of Regulation S-K).