Stephen Douglas Kelley - 01 Mar 2026 Form 4 Insider Report for ADVANCED ENERGY INDUSTRIES INC (AEIS)

Reporting relationship: President and CEO, Director
Issuer ticker: AEIS
Reported as of: 01 Mar 2026
Net transaction value: -$4,481,537
SEC form: 4
Accepted by SEC: 03 Mar 2026, 18:47:37 UTC
Prior SEC filing: 20 Feb 2026
Next SEC filing: 12 Mar 2026
Source filing: View source filing
Reporting owner signature: /s/ Elizabeth Vonne - Attorney-in-Fact

Key filing fact

Stephen Douglas Kelley filed Form 4 for ADVANCED ENERGY INDUSTRIES INC (AEIS) on 03 Mar 2026.

Key facts

This page summarizes Stephen Douglas Kelley's Form 4 filing for ADVANCED ENERGY INDUSTRIES INC (AEIS).
7 reported transactions and 4 derivative rows are listed below.
Accepted by SEC: 03 Mar 2026, 18:47.

Change

Previous filing in this sequence was filed on 20 Feb 2026.
Current net transaction value: -$4,481,537.

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 0001443674 Primary reporting owner

Kelley Stephen Douglas

Relationship: President and CEO, Director
Address: 1595 WYNKOOP STREET, SUITE 800, DENVER
Signature: /s/ Elizabeth Vonne - Attorney-in-Fact
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: +10,449
Change %: +8.4%
Price
Shares after: 134,601
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F1

AEIS transaction

Common Stock

Options Exercise

Transaction value
Shares: +9,130
Change %: +6.8%
Price
Shares after: 143,731
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F2

AEIS transaction

Common Stock

Tax liability

Transaction value: $4,481,537
Shares: -13,355
Change %: -9.3%
Price: $335.57
Shares after: 130,376
Date: 01 Mar 2026
Ownership: Direct
Footnotes: F3

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: -10,449
Change %: -50%
Price: $0.000000
Shares after: 10,449
Date: 01 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 10,449
Exercise price
Footnotes: F1

AEIS transaction Derivative

Restricted Stock Units

Options Exercise

Transaction value: $0
Shares: -9,130
Change %: -33%
Price: $0.000000
Shares after: 18,258
Date: 01 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 9,130
Exercise price
Footnotes: F2

AEIS transaction Derivative

Restricted Stock Units

Award

Transaction value: $0
Shares: +11,620
Change %
Price: $0.000000
Shares after: 11,620
Date: 01 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 11,620
Exercise price: $0.000000
Footnotes: F4

AEIS transaction Derivative

Performance Units

Award

Transaction value: $0
Shares: +18,260
Change %
Price: $0.000000
Shares after: 18,260
Date: 01 Mar 2026
Ownership: Direct
Underlying class: Common Stock
Underlying amount: 18,260
Exercise price: $0.000000
Footnotes: F5

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

Additional SEC filing notes

Filing notes and footnotes

Explanation of responses 5 footnotes

Footnote F1

On March 1, 2024, the reporting person was granted 31,348 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 27,388 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.

Footnote F3

Represents 10,950 shares of unvested restricted stock units and 119,426 shares of common stock.

Footnote F4

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 F5

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.