UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 OR 15(d) of The Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): May 13, 2026

Advanced Energy Industries, Inc.

(Exact name of registrant as specified in its charter)


Delaware	000-26966	84-0846841
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)

Delaware	000-26966	84-0846841
1595 Wynkoop Street, Suite 800, Denver, Colorado	80202
(State or other jurisdiction of incorporation)	(Commission File Number)	(IRS Employer Identification No.)
(Address of principal executive offices)	(Zip Code)


1595 Wynkoop Street, Suite 800, Denver, Colorado		80202
(Address of principal executive offices)		(Zip Code)

(970) 407-6626

(Registrant’s telephone number, including area code)

Not applicable

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the

registrant under any of the following provisions (see General Instruction A.2. below):

☐ Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425) ~~ ~~ ☐ Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12) ~~ ~~ ☐ Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) ~~ ~~ ☐ Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))

Securities registered pursuant to Section 12(b) of the Act:

Title of each class		Trading Symbol(s)		Name of each exchange on which registered
Common Stock, $0.001 par value		AEIS		NASDAQ Global Select Market

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (17 CFR §230.405) or Rule 12b-2 of the Securities Exchange Act of 1934 (17 CFR §240.12b-2). Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

Item 8.01. Other Events.

~~Item~~On 8May 13, 2026, Advanced Energy Industries, Inc.01 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. ~~Other~~A ~~Events~~copy of the press release is attached hereto as Exhibit 99.1 and incorporated by reference herein.

Item 9.01. Financial Statements and Exhibits.

On(d) ~~May 13, 2026, Advanced Energy Industries, Inc~~Exhibits. 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.

~~Item 9.01~~The ~~Financial~~following ~~Statements~~exhibits ~~and~~are ~~Exhibits~~filed with this report.

(d) Exhibits


Exhibit Number		Description

99.1		Press Release dated May 13, 2026

104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

~~The following exhibits are filed with this report.~~

Exhibit Number		Description

99.1		Press Release dated May 13, 2026

104		Cover Page Interactive Data File (embedded within the Inline XBRL document)

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.

SIGNATURES


	ADVANCED ENERGY INDUSTRIES, INC.
	/s/ Paul Oldham
Date: May 13, 2026	Paul Oldham
	Chief Financial Officer & Executive Vice President

~~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.~~


	ADVANCED ENERGY INDUSTRIES, INC.

	/s/ Paul Oldham
Date: May 13, 2026	Paul Oldham
	Chief Financial Officer & Executive Vice President

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