Form 4 for AEIS ADVANCED ENERGY INDUSTRIES INC
Accepted 2026-03-03 00:00:00 ET · period of report 2026-03-01 · accession 0001923149-26-000002 · SEC index · Original document
Summary rows
Aggregated the way they appear in lists: one row per insider, transaction code and security table.
| X | Filed | Traded | Ticker | Insider | Title | Type | Price | Qty | Owned | ΔOwn | Value |
|---|---|---|---|---|---|---|---|---|---|---|---|
| D | 2026-03-03 | 2026-03-01 | AEIS | Vonne Elizabeth Karpinski | EVP, GC | D - Sale to Iss | — | -437 | 12.6K | -3% | — |
| D | 2026-03-03 | 2026-03-01 | AEIS | Vonne Elizabeth Karpinski | EVP, GC | F - Tax | $335.57 | -2,033 | 13.0K | -14% | -$682.2K |
| DM | 2026-03-03 | 2026-03-01 | AEIS | Vonne Elizabeth Karpinski | EVP, GC | M - OptEx | — | +3,336 | 13.6K | +32% | — |
| DM | 2026-03-03 | 2026-03-01 | AEIS | Vonne Elizabeth Karpinski | EVP, GC | A - Grant | $0.00 | +6,338 | 2,655 | New | $0 |
| DM | 2026-03-03 | 2026-03-01 | AEIS | Vonne Elizabeth Karpinski | EVP, GC | M - OptEx | $0.00 | +3,926 | 3,932 | +65,433% | $0 |
Purchase Sale Sale after option exercise All abbreviations
Every reported transaction
| # | Table | Security | Date | Code | A/D | Shares | Price | Owned after | Own | Exercise / expiry | Underlying | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Common | Common Stock | 2026-03-01 | D | D | 437 | — | 12,579 | D | — | — | (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. |
| 2 | Common | Common Stock | 2026-03-01 | F | D | 2,033 | $335.57 | 12,986 | D | — | — | (F3) Payment of tax liability by withholding securities incident to vesting of RSUs. |
| 3 | Common | Common Stock | 2026-03-01 | M | A | 1,377 | — | 15,019 | D | — | — | (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"). |
| 4 | Common | Common Stock | 2026-03-01 | M | A | 1,959 | — | 13,642 | D | — | — | (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. |
| 5 | Derivative | Restricted Stock Units | 2026-03-01 | A | A | 2,656 | $0.00 | 2,656 | D | $0.00 · — to — | 2,656 Common Stock | (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. |
| 6 | Derivative | Phantom Stock | 2026-03-01 | A | A | 1,027 | $0.00 | 4,051 | D | — · — to — | 1,027 Common Stock | (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. (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. |
| 7 | Derivative | Performance Units | 2026-03-01 | A | A | 2,655 | $0.00 | 2,655 | D | $0.00 · — to — | 2,655 Common Stock | (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. |
| 8 | Derivative | Restricted Stock Units | 2026-03-01 | M | A | 1,959 | $0.00 | 1,959 | D | — · — to — | 1,959 Common Stock | (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. |
| 9 | Derivative | Restricted Stock Units | 2026-03-01 | M | A | 1,967 | $0.00 | 3,932 | D | — · — to — | 1,967 Common Stock | (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"). |