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 August 3, 2026, Advanced Energy Industries, Inc. issued a press release announcing its financial results for the quarter ended June 30, 2026. A copy of…

Other Events. On June 12, 2026, Advanced Energy Industries, Inc. issued a press release announcing that it had issued a notice of redemption to redeem on September 23, 2026, all $136,709,000 of its remaining outstanding 2.50% Convertible Senior Notes due 2028. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated by reference herein.

Unregistered Sales of Equity Securities. The disclosures set forth in

Entry into a Material Definitive Agreement. On May 18, 2026, Advanced Energy Industries, Inc. (the “Company”) completed its previously announced private unregistered offering of $1.15 billion aggregate principal amount of its 0% Convertible Senior Notes due 2031 (the “Notes”), which amount includes the full exercise of the initial purchasers’ option to purchase up to $150.0 million aggregate principal amount of additional Notes. Indenture and Notes The Notes were issued under an Indenture (th…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The disclosures set forth in

Other Events. On May 13, 2026, Advanced Energy Industries, Inc. issued a press release announcing the pricing of an offering of $1 billion aggregate principal amount of its 0% Convertible Senior Notes due 2031 in a private transaction that is exempt from the registration requirements of the Securities Act of 1933, as amended. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated by reference herein.

Other Events. ​ On May 13, 2026, Advanced Energy Industries, Inc. issued a press release announcing the commencement of an offering of $1 billion aggregate principal amount of its Convertible Senior Notes due 2031 in a private transaction that is exempt from the registration requirements of the Securities Act of 1933, as amended. A copy of the press release is attached hereto as Exhibit 99.1 and incorporated by reference herein.

Director: Annual board election of directors with routine results.

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 May 4, 2026, Advanced Energy Industries, Inc. issued a press release announcing its financial results for the quarter ended March 31, 2026. A copy of th…

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 February 10, 2026, Advanced Energy Industries, Inc. issued a press release announcing its financial results for the quarter ended December 31, 2025. A c…

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 4, 2025, Advanced Energy Industries, Inc. issued a press release announcing its financial results for the quarter ended September 30, 2025. A c…

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 August 5, 2025, Advanced Energy Industries, Inc. issued a press release announcing its financial results for the quarter ended June 30, 2025. A copy of…

Termination of a Material Definitive Agreement On May 8, 2025, in connection with Advanced Energy’s entry into the new credit agreement (discussed below in

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant On May 8, 2025, Advanced Energy entered into a credit agreement (the “New Credit Agreement”) among Advanced Energy, as borrower, certain material domestic subsidiaries of Advanced Energy, as guarantors, HSBC, as administrative agent (in such capacity, the “Administrative Agent”), and HSBC, Citibank, N.A., Wells Fargo, National Association, PNC Bank, National Association, and JPMor…

Entry into a Material Definitive Agreement The information set forth under

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 April 30, 2025, Advanced Energy Industries, Inc. issued a press release announcing its financial results for the quarter ended March 31, 2025. A copy of…

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 February 12, 2025, Advanced Energy Industries, Inc. issued a press release announcing its financial results for the quarter ended December 31, 2024. A c…

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 October 30, 2024, Advanced Energy Industries, Inc. issued a press release announcing its financial results for the quarter ended September 30, 2024. A c…

Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information set forth under

Entry into a Material Definitive Agreement. Amendment to Credit Agreement On September 9, 2024, Advanced Energy Industries, Inc. (the “Company”) and material domestic subsidiaries of the Company acting as guarantors (the “Guarantors”) entered into Amendment No. 4 to the Credit Agreement (the “Amendment”), which amended its existing credit agreement, dated as of September 10, 2019 (as amended by Amendment No. 1, dated September 9, 2021, Amendment No. 2, dated March 31, 2023, and Amendment No.…

Triggering Events That Accelerate or Increase a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement The information set forth under

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 July 30, 2024, Advanced Energy Industries, Inc. issued a press release announcing its financial results for the quarter ended June 30, 2024. A copy of t…

Material Modifications to Rights of Security Holders. The information set forth under

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 May 1, 2024, Advanced Energy Industries, Inc. issued a press release announcing its financial results for the quarter ended March 31, 2024. A copy of th…