John Donaghey - 18 Feb 2026 Form 4 Insider Report for ADVANCED ENERGY INDUSTRIES INC (AEIS)

Role: EVP, Global Sales
Signature: /s/ Elizabeth Vonne - Attorney-in-Fact
Issuer symbol: AEIS
Transactions as of: 18 Feb 2026
Net transactions value: +$1,670,176
Form type: 4
Filing time: 20 Feb 2026, 18:15:09 UTC
Previous filing: 14 Aug 2025
Next filing: 03 Mar 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Donaghey John	EVP, Global Sales	1595 WYNKOOP STREET, SUITE 800, DENVER	/s/ Elizabeth Vonne - Attorney-in-Fact	20 Feb 2026	0001940410

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	AEIS	Common Stock	Options Exercise	$2,698,291	+8,590	+86%	$314.12	18,619	18 Feb 2026	Direct	F1
transaction	AEIS	Common Stock	Tax liability	$1,028,115	-3,273	-18%	$314.12	15,346	18 Feb 2026	Direct	F2, F3

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	AEIS	Performance Units	Options Exercise	$0	-5,255	-100%	$0.000000	0	18 Feb 2026	Common Stock	0	$0.000000	Direct	F4

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents the total number of shares vested pursuant to the performance unit award issued under the 2023 Long-Term Incentive Plan (the "2023 LTI Plan"), and reported voluntarily on 3/3/2023, based on achievement of performance metrics under the 2023 LTI Plan. The shares were approved for a 2/18/2026 release by the Board of Directors.
F2	Payment of tax liability by withholding securities incident to vesting of performance stock units.
F3	Represents 2,627 shares of unvested restricted stock units and 12,719 shares of common stock.
F4	These performance unit awards were issued under the 2023 LTI Plan at 100% of target and reported voluntarily on 3/3/2023. Following the end of the three-year performance period, the awards vested based on achievement of performance metrics under the 2023 LTI Plan.