Statement of Changes in Beneficial Ownership (Form 4)

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b). Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP OF SECURITIES Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934 or Section 30(h) of the Investment Company Act of 1940

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(Print or Type Responses)

1. Name and Address of Reporting Person * Donaghey John 2. Issuer Name and Ticker or Trading Symbol ADVANCED ENERGY INDUSTRIES INC [AEIS] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner __X__ Officer (give title below) _____ Other (specify below) EVP, Global Sales (Last) (First) (Middle) 1595 WYNKOOP STREET, SUITE 800 3. Date of Earliest Transaction (Month/Day/Year) 03/01/2026 (Street) DENVER, CO 80202 4. If Amendment, Date Original Filed (Month/Day/Year) 6. Individual or Joint/Group Filing (Check Applicable Line) _X_ Form filed by One Reporting Person ___ Form filed by More than One Reporting Person (City) (State) (Zip) Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned

1.Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 03/01/2026 M 1,750(1) A (1) 17,096 D Common Stock 03/01/2026 M 1,791(2) A (2) 18,887 D Common Stock 03/01/2026 F 1,736(3) D $335.57 17,151 D Common Stock 03/01/2026 D 875 D (4) 16,276 D

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Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)

1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Underlying Securities (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares
Restricted Stock Units	(1)	03/01/2026		M			2,612	(1)	(1)	Common Stock	2,612	$ 0	2,612	D
Restricted Stock Units	(2)	03/01/2026		M			2,388	(2)	(2)	Common Stock	2,388	$ 0	4,775	D
Restricted Stock Units	$ 0	03/01/2026		A		3,320		(5)	(5)	Common Stock	3,320	$ 0	3,320	D
Performance Units	$ 0	03/01/2026		A	V	3,320		(6)	(6)	Common Stock	3,320	$ 0	3,320	D
Phantom Stock	(7)	03/01/2026		A		2,334(8)		(7)	(7)	Common Stock	2,334	$ 0	4,948	D

Reporting Owners

Reporting Owner Name / Address	Relationships
	Director	10% Owner	Officer	Other
Donaghey John 1595 WYNKOOP STREET, SUITE 800 DENVER, CO 80202			EVP, Global Sales

Signatures

/s/ Elizabeth Vonne - Attorney-in-Fact		03/03/2026
**Signature of Reporting Person		Date

Explanation of Responses:

*	If the form is filed by more than one reporting person, see Instruction 4(b)(v).
**	Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1)	On March 1, 2024, the reporting person was granted 7,837 restricted stock units ("RSUs") vesting in three equal installments beginning on the first anniversary of the grant date, of which the second installment vested on March 1, 2026. RSUs convert into common stock on a one-for-one basis. Of the 2,612 vested shares, receipt of 862 shares of common stock was deferred pursuant to the reporting person's election under the Company's deferred compensation plan (the "Plan").
(2)	On March 1, 2025, the reporting person was granted 7,163 restricted stock units ("RSUs") vesting in three equal installments beginning on the first anniversary of the grant date, of which the first installment vested on March 1, 2026. RSUs convert into common stock on a one-for-one basis. Of the 2,388 vested shares, receipt of 597 shares of common stock was deferred pursuant to the reporting person's election under the Plan.
(3)	Payment of tax liability by withholding securities incident to vesting of RSUs.
(4)	In connection with the March 1, 2026 vesting of RSUs previously granted on March 1, 2023 and reported in Table 1, the reporting person's receipt of 875 shares of common stock was deferred pursuant to the reporting person's election under the Plan, resulting in the reporting person's receipt of 875 shares of phantom stock.
(5)	These employee RSUs were issued pursuant to the Company's Amended and Restated 2023 Omnibus Incentive Plan ("LTI Plan") and will vest in three equal installments beginning on the first anniversary of the grant date.
(6)	These performance share awards were issued pursuant to the LTI Plan at 100% of target, have a three-year performance period, and will vest in all or in part upon achievement of performance metrics. Any awards that have not been vested and released at the end of the three-year performance period will be canceled.
(7)	Each share of phantom stock represents a right to receive one share of common stock or the cash value thereof. Shares of phantom stock become payable in accordance with the reporting person's distribution elections made pursuant to the Plan or upon the reporting person's termination of service, death, or disability. Subject to certain timing restrictions, the reporting person may transfer some or all of the shares of phantom stock into alternative investments under the terms of the Plan.
(8)	Represents 875 shares of phantom stock received as a result of the deferral of 875 RSUs previously granted on March 1, 2023 and reported in Table 1, 862 shares of phantom stock received as a result of the deferral of 862 RSUs previously granted on March 1, 2024 and reported on Table 2, and 597 shares of phantom stock received as a result of the deferral of 597 RSUs previously granted on March 1, 2025 and reported on Table 2.

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