Stephen Douglas Kelley - 10 Mar 2026 Form 4 Insider Report for ADVANCED ENERGY INDUSTRIES INC (AEIS)

Reporting relationship: President and CEO, Director
Issuer ticker: AEIS
Reported as of: 10 Mar 2026
Net transaction value: -$15,830,829
SEC form: 4
Accepted by SEC: 12 Mar 2026, 18:54:26 UTC
Prior SEC filing: 03 Mar 2026
Next SEC filing: 22 May 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 12 Mar 2026.

Key facts

This page summarizes Stephen Douglas Kelley's Form 4 filing for ADVANCED ENERGY INDUSTRIES INC (AEIS).
13 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 12 Mar 2026, 18:54.

Change

Previous filing in this sequence was filed on 03 Mar 2026.
Current net transaction value: -$15,830,829.

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: 12 Mar 2026

Reported non-derivative transactions

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

AEIS transaction

Common Stock

Sale

Transaction value: $165,876
Shares: -543
Change %: -0.42%
Price: $305.48
Shares after: 129,833
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1

AEIS transaction

Common Stock

Sale

Transaction value: $268,818
Shares: -876
Change %: -0.67%
Price: $306.87
Shares after: 128,957
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1, F2

AEIS transaction

Common Stock

Sale

Transaction value: $341,340
Shares: -1,112
Change %: -0.86%
Price: $306.96
Shares after: 127,845
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1, F3

AEIS transaction

Common Stock

Sale

Transaction value: $379,158
Shares: -1,224
Change %: -0.96%
Price: $309.77
Shares after: 126,621
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1, F4

AEIS transaction

Common Stock

Sale

Transaction value: $1,038,560
Shares: -3,330
Change %: -2.6%
Price: $311.88
Shares after: 123,291
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1, F5

AEIS transaction

Common Stock

Sale

Transaction value: $1,166,708
Shares: -3,718
Change %: -3%
Price: $313.80
Shares after: 119,573
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1, F6

AEIS transaction

Common Stock

Sale

Transaction value: $1,787,548
Shares: -5,678
Change %: -4.7%
Price: $314.82
Shares after: 113,895
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1, F7

AEIS transaction

Common Stock

Sale

Transaction value: $730,315
Shares: -2,312
Change %: -2%
Price: $315.88
Shares after: 111,583
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1, F8

AEIS transaction

Common Stock

Sale

Transaction value: $732,438
Shares: -2,309
Change %: -2.1%
Price: $317.21
Shares after: 109,274
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1, F9

AEIS transaction

Common Stock

Sale

Transaction value: $2,298,388
Shares: -7,229
Change %: -6.6%
Price: $317.94
Shares after: 102,045
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1, F10

AEIS transaction

Common Stock

Sale

Transaction value: $4,236,346
Shares: -13,278
Change %: -13%
Price: $319.05
Shares after: 88,767
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1, F11

AEIS transaction

Common Stock

Sale

Transaction value: $2,410,446
Shares: -7,535
Change %: -8.5%
Price: $319.90
Shares after: 81,232
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1, F12

AEIS transaction

Common Stock

Sale

Transaction value: $274,887
Shares: -856
Change %: -1.1%
Price: $321.13
Shares after: 80,376
Date: 10 Mar 2026
Ownership: Direct
Footnotes: F1, F13

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

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 13 footnotes

Footnote F1

The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 5, 2025.

Footnote F2

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $306.79 to $307.21, inclusive. The reporting person undertakes to provide to the Company, any securityholder of the Company or SEC staff, upon request, full information regarding the number of shares sold at each price within the range specified herein.

Footnote F3

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $307.89 to $308.00, inclusive. The reporting person undertakes to provide to the Company, any securityholder of the Company or SEC staff, upon request, full information regarding the number of shares sold at each price within the range specified herein.

Footnote F4

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $309.68 to $310.02, inclusive. The reporting person undertakes to provide to the Company, any securityholder of the Company or SEC staff, upon request, full information regarding the number of shares sold at each price within the range specified herein.

Footnote F5

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $311.81 to $312.19, inclusive. The reporting person undertakes to provide to the Company, any securityholder of the Company or SEC staff, upon request, full information regarding the number of shares sold at each price within the range specified herein.

Footnote F6

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $313.15 to $314.09, inclusive. The reporting person undertakes to provide to the Company, any securityholder of the Company or SEC staff, upon request, full information regarding the number of shares sold at each price within the range specified herein.

Footnote F7

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $314.28 to $315.05, inclusive. The reporting person undertakes to provide to the Company, any securityholder of the Company or SEC staff, upon request, full information regarding the number of shares sold at each price within the range specified herein.

Footnote F8

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $315.36 to $315.91, inclusive. The reporting person undertakes to provide to the Company, any securityholder of the Company or SEC staff, upon request, full information regarding the number of shares sold at each price within the range specified herein.

Footnote F9

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $316.56 to $317.50, inclusive. The reporting person undertakes to provide to the Company, any securityholder of the Company or SEC staff, upon request, full information regarding the number of shares sold at each price within the range specified herein.

Footnote F10

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $317.67 to $318.64, inclusive. The reporting person undertakes to provide to the Company, any securityholder of the Company or SEC staff, upon request, full information regarding the number of shares sold at each price within the range specified herein.

Footnote F11

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $318.69 to $319.62, inclusive. The reporting person undertakes to provide to the Company, any securityholder of the Company or SEC staff, upon request, full information regarding the number of shares sold at each price within the range specified herein.

Footnote F12

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $319.74 to $320.41, inclusive. The reporting person undertakes to provide to the Company, any securityholder of the Company or SEC staff, upon request, full information regarding the number of shares sold at each price within the range specified herein.

Footnote F13

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $320.81 to $321.35, inclusive. The reporting person undertakes to provide to the Company, any securityholder of the Company or SEC staff, upon request, full information regarding the number of shares sold at each price within the range specified herein.