Kelley Stephen Douglas 4

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

Form 4

Period: 2026-03-01

DirectorPresident and CEO

Transactions

Exercise/Conversion
Common Stock
[F1]
2026-03-01+10,449→ 134,601 total
Exercise/Conversion
Common Stock
[F2]
2026-03-01+9,130→ 143,731 total
Tax Payment
Common Stock
[F3]
2026-03-01$335.57/sh−13,355$4,481,537→ 130,376 total
Exercise/Conversion
Restricted Stock Units
[F1]
2026-03-01−10,449→ 10,449 total
→ Common Stock (10,449 underlying)
Exercise/Conversion
Restricted Stock Units
[F2]
2026-03-01−9,130→ 18,258 total
→ Common Stock (9,130 underlying)
Award
Restricted Stock Units
[F4]
2026-03-01+11,620→ 11,620 total
Exercise: $0.00→ Common Stock (11,620 underlying)
Award
Performance Units
[F5]
2026-03-01+18,260→ 18,260 total
Exercise: $0.00→ Common Stock (18,260 underlying)

Footnotes (5)

[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.
[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.
[F3]Represents 10,950 shares of unvested restricted stock units and 119,426 shares of common stock.
[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.
[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.

Signature

/s/ Elizabeth Vonne - Attorney-in-Fact|2026-03-03

Documents

1 file