Vonne Elizabeth Karpinski 4

4 · ADVANCED ENERGY INDUSTRIES INC · Filed Mar 3, 2026

Insider Transaction Report

Form 4

Period: 2026-03-01

ADVANCED ENERGY INDUSTRIES INCAEIS

Vonne Elizabeth Karpinski

EVP, General Counsel

Transactions

Exercise/Conversion
Common Stock
[F1]
2026-03-01+1,959→ 13,642 total
Exercise/Conversion
Common Stock
[F2]
2026-03-01+1,377→ 15,019 total
Tax Payment
Common Stock
[F3]
2026-03-01$335.57/sh−2,033$682,214→ 12,986 total
Disposition to Issuer
Common Stock
[F4][F5]
2026-03-01−437→ 12,579 total
Exercise/Conversion
Restricted Stock Units
[F1]
2026-03-01+1,959→ 1,959 total
→ Common Stock (1,959 underlying)
Exercise/Conversion
Restricted Stock Units
[F2]
2026-03-01+1,967→ 3,932 total
→ Common Stock (1,967 underlying)
Award
Restricted Stock Units
[F6]
2026-03-01+2,656→ 2,656 total
Exercise: $0.00→ Common Stock (2,656 underlying)
Award
Performance Units
[F7]
2026-03-01+2,655→ 2,655 total
Exercise: $0.00→ Common Stock (2,655 underlying)
Award
Phantom Stock
[F8][F9]
2026-03-01+1,027→ 4,051 total
→ Common Stock (1,027 underlying)

Footnotes (9)

[F1]On March 1, 2024, the reporting person was granted 5,877 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.
[F2]On March 1, 2025, the reporting person was granted 5,899 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 1,967 vested shares, receipt of 590 shares of common stock was deferred pursuant to the reporting person's election under the Company's deferred compensation plan (the "Plan").
[F3]Payment of tax liability by withholding securities incident to vesting of RSUs.
[F4]In connection with the March 1, 2026 vesting of RSUs previously granted on March 1, 2023, the reporting person's receipt of 437 shares of common stock was deferred pursuant to the reporting person's election under the Plan, resulting in the reporting person's receipt of 437 shares of phantom stock.
[F5]Amount includes 29.832 shares acquired through the Dividend Reinvestment Plan. The numbers reported herein are rounded to the nearest number.
[F6]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.
[F7]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.
[F8]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.
[F9]Represents 437 shares of phantom stock received as a result of the deferral of 437 RSUs previously granted on March 1, 2023 and reported in Table 1 and 590 shares of phantom stock received as a result of the deferral of 590 RSUs previously granted on March 1, 2025 and reported on Table 2.

Signature

Elizabeth Vonne|2026-03-03

Documents

1 file

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ownership.xmlPrimary
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