OSHKOSH CORP

On February 3, 2026, Duncan J. Palmer, a member of the Company's Board of Directors (the "Board"), adopted a trading arrangement intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). The arrangement is scheduled to expire on May 29, 2026, and provides for a one-time market sale of 45.5% of the shares of the Company's common stock that Mr. Palmer expected the Company to grant to him at the meeting of the Board in May. On May 5, 2026, he received 1,110 shares, with the sale proceeds to be used to satisfy Mr. Palmer's estimated income tax obligations associated with the receipt of the shares. The aggregate number of shares that may be sold under the arrangement, which was determined at the time of grant, is 505 shares.

Except as disclosed above, none of our directors or executive officers adopted, modified orterminated any contract, instruction or written plan for the purchase or sale of our securities that was intended to satisfy the affirmative defense conditions of Rule 10b5-1(c) or any “non-Rule 10b5-1 trading arrangement” as such term is defined in Item 408(a) of Regulation S-K, during the three months ended March 31, 2026.