Penguin Solutions, Inc.

On November 11, 2025, Joseph Clark, our President of Optimized LED, adopted a Rule 10b5-1 trading arrangement (the “Clark 10b5-1 Plan”) that is intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Exchange Act. The Clark 10b5-1 Plan provides for the sale of up to (i)52,943 shares of common stock, plus (ii) one-half of the net shares of common stock that may be acquired by Mr. Clark upon the future vesting of 27,513 restricted stock units and all of the net shares of common stock that may be acquired by Mr. Clark upon the future vesting ofup to 30,932 performance-based restricted stock units (net of shares of common stock surrendered to Penguin Solutions to satisfy tax withholding obligations in connection with vesting), each subject to pre-established limit prices, commencing on February 10, 2026 and continuing until all shares are sold or until July 30, 2027, whichever occurs first.

On November 11, 2025, Anne Kuykendall, our Senior Vice President and Chief Legal Officer, adopted a Rule 10b5-1 trading arrangement (the “Kuykendall 10b5-1 Plan”) that is intended to satisfy the affirmative defense of Rule 10b5-1(c) under the Exchange Act. The Kuykendall 10b5-1 Plan provides for the sale of up to (i)28,000 shares of common stock, plus (ii) 25% of the net shares of common stock that may be acquired by Ms. Kuykendall upon the future vesting of 18,043 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 February 25, 2026 and continuing until all shares are sold or until December 31, 2026, whichever occurs first.

During the fiscal quarter ended November 28, 2025, no other officers or dire ctors 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).