Elizabeth Karpinski Vonne - 01 Mar 2026 Form 4 Insider Report for ADVANCED ENERGY INDUSTRIES INC (AEIS)

Reporting relationship: EVP, General Counsel
Issuer ticker: AEIS
Reported as of: 01 Mar 2026
Net transaction value: -$682,214
SEC form: 4
Accepted by SEC: 03 Mar 2026, 18:55:00 UTC
Prior SEC filing: 24 Feb 2026
Next SEC filing: 20 Apr 2026
Source filing: View source filing
Reporting owner signature: Elizabeth Vonne

Key filing fact

Elizabeth Karpinski Vonne filed Form 4 for ADVANCED ENERGY INDUSTRIES INC (AEIS) on 03 Mar 2026.

Key facts

This page summarizes Elizabeth Karpinski Vonne's Form 4 filing for ADVANCED ENERGY INDUSTRIES INC (AEIS).
9 reported transactions and 5 derivative rows are listed below.
Accepted by SEC: 03 Mar 2026, 18:55.

Change

Previous filing in this sequence was filed on 24 Feb 2026.
Current net transaction value: -$682,214.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001923149 Primary reporting owner

Vonne Elizabeth Karpinski

Relationship: EVP, General Counsel
Address: 1595 WYNKOOP STREET, SUITE 800, DENVER
Signature: Elizabeth Vonne
Signature date: 03 Mar 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

AEIS transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,959
Change %: +17%
Price
Shares after: 13,642
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F1

AEIS transaction

Common Stock

Options Exercise

Transaction value
Shares: +1,377
Change %: +10%
Price
Shares after: 15,019
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F2

AEIS transaction

Common Stock

Tax liability

Transaction value: $682,214
Shares: -2,033
Change %: -14%
Price: $335.57
Shares after: 12,986
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F3

AEIS transaction

Common Stock

Disposed to Issuer

Transaction value
Shares: -437
Change %: -3.4%
Price
Shares after: 12,579
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F4, F5

Reported derivative securities

Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.

AEIS transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: +1,959
Change %
Price: $0.000000
Shares after: 1,959
Date: 01 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,959
Exercise price
Footnotes: F1

AEIS transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: +1,967
Change %: +100%
Price: $0.000000
Shares after: 3,932
Date: 01 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,967
Exercise price
Footnotes: F2

AEIS transaction Derivative

Restricted Stock Units

Award

Transaction value: $0
Shares: +2,656
Change %
Price: $0.000000
Shares after: 2,656
Date: 01 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,656
Exercise price: $0.000000
Footnotes: F6

AEIS transaction Derivative

Performance Units

Award

Transaction value: $0
Shares: +2,655
Change %
Price: $0.000000
Shares after: 2,655
Date: 01 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 2,655
Exercise price: $0.000000
Footnotes: F7

AEIS transaction Derivative

Phantom Stock

Award

Transaction value: $0
Shares: +1,027
Change %: +34%
Price: $0.000000
Shares after: 4,051
Date: 01 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 1,027
Exercise price
Footnotes: F8, F9

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 9 footnotes

Footnote 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.

Footnote 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").

Footnote F3

Payment of tax liability by withholding securities incident to vesting of RSUs.

Footnote 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.

Footnote F5

Amount includes 29.832 shares acquired through the Dividend Reinvestment Plan. The numbers reported herein are rounded to the nearest number.

Footnote 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.

Footnote 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.

Footnote 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.

Footnote 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.