Form 4 Filing for AAON, INC.

Gordon Douglas Wichman, Executive Vice President of AAON, INC., reported transactions on May 26, 2026. Wichman acquired 3,000 shares of Common Stock, par value $.004, at a price of $27.58 per share, increasing his post-transaction shares to 13,997. Subsequently, he disposed of 3,000 shares of the same stock at a weighted average price of $140.39 per share (with individual transaction prices ranging from $140.35 to $140.77), resulting in 10,997 shares remaining. Additionally, Wichman exercised a stock option to acquire 3,000 shares of Common Stock at $27.58 per share, with 21,250 shares held post-transaction. He also holds 4,542 shares of Common Stock through a 401(k) Plan. The filing is a Form 4, indicating changes in beneficial ownership.