Form 4 Filing for Anne Del Santo

Anne Del Santo, a director at ADVANCED ENERGY INDUSTRIES INC (AEIS), reported a sale of 270 shares of Common Stock on October 5, 2026, at a price of $304.76 per share. This transaction, executed under a Rule 10b5-1 trading plan, resulted in a post-transaction ownership of 7682 shares. The reported shares are held by The Delsanto Family Trust, for which Ms. Del Santo serves as trustee. The filing was signed by Elizabeth Vonne as Attorney-in-Fact on October 7, 2026.