AEIS: Financial results

Item 2.02 Results of Operations and Financial Condition. The information in this Form 8-K is furnished under “Item 2.02 Results of Operations and Financial Condition” and Exhibit 99.1 attached hereto shall not be deemed “filed” for purposes of Section 18 of the Securities Act of 1934, nor shall they be deemed incorporated by reference in any filing under the Securities Act of 1933, except as shall be expressly set forth by specific reference in such filing. On November 2, 2026, Advanced Energy Industries, Inc. issued a press release announcing its financial results for the quarter ended September 30, 2026. A copy of the press release is furnished with this Current Report on Form 8-K as Exhibit 99.1. Item 9.01 Financial Statements and Exhibits. (d) Exhibits ​ Exhibit Number ​ ​ ​ Description ​ ​ ​ 99.1 ​ Advanced Energy press release dated November 2, 2026 reporting financial results ​ ​ ​ 104 ​ The cover page from Advanced Energy Industries, Inc. Current Report on Form 8-K, formatted in Inline XBRL ​ ​ ​ ​ SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. ​ ​ ​ ​ ​ ​ ​ ​ /s/ Paul Oldham Date: November 2, 2026 Paul Oldham ​ Chief Financial Officer & Executive Vice President ​ ​ ​ ​ ​ ​ ​ XBRL-Only Content Section