AEIS · Advanced Energy Industries Inc

The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 10, 2026.

Shares held by The Delsanto Family Trust, for which the reporting person serves as a trustee.

The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.

Mr. Shirley transferred all shares out of The Shirley Family Trust and into the account held directly in his name on October 7, 2025. This was a mere change in the form of beneficial ownership and no change in Mr. Shirley's pecuniary interest. Subsequent Form 4 filings inadvertently continued to report the shares as indirectly held by Mr. Shirley in the trust.

Represents an annual grant of restricted stock units to the reporting person on May 7, 2026 as the equity portion of the non-employee directors' retainer for Board services under the 2023 Amended and Restated Omnibus Incentive Plan. The restricted stock units vest on the one-year anniversary of the grant date contingent upon the reporting person's continued service as director upon such date.

Restricted stock units are not exercisable and do not have an expiration date.

Represents an annual grant of restricted stock units to the reporting person on May 7, 2026 as the equity portion of the non-employee directors' retainer for Board services under the 2023 Amended and Restated Omnibus Incentive Plan. The restricted stock units vest on the one-year anniversary of the grant date contingent upon the reporting person's continued service as director upon such date.

Restricted stock units are not exercisable and do not have an expiration date.

Represents an annual grant of restricted stock units to the reporting person on May 7, 2026 as the equity portion of the non-employee directors' retainer for Board services under the 2023 Amended and Restated Omnibus Incentive Plan. The restricted stock units vest on the one-year anniversary of the grant date contingent upon the reporting person's continued service as director upon such date.

Restricted stock units are not exercisable and do not have an expiration date.

Represents an annual grant of restricted stock units to the reporting person on May 7, 2026 as the equity portion of the non-employee directors' retainer for Board services under the 2023 Amended and Restated Omnibus Incentive Plan. The restricted stock units vest on the one-year anniversary of the grant date contingent upon the reporting person's continued service as director upon such date.

Restricted stock units are not exercisable and do not have an expiration date.

Represents an annual grant of restricted stock units to the reporting person on May 7, 2026 as the equity portion of the non-employee directors' retainer for Board services under the 2023 Amended and Restated Omnibus Incentive Plan. The restricted stock units vest on the one-year anniversary of the grant date contingent upon the reporting person's continued service as director upon such date.

Restricted stock units are not exercisable and do not have an expiration date.

Represents an annual grant of restricted stock units to the reporting person on May 7, 2026 as the equity portion of the non-employee directors' retainer for Board services under the 2023 Amended and Restated Omnibus Incentive Plan. The restricted stock units vest on the one-year anniversary of the grant date contingent upon the reporting person's continued service as director upon such date.

Restricted stock units are not exercisable and do not have an expiration date.

Represents an annual grant of restricted stock units to the reporting person on May 7, 2026 as the equity portion of the non-employee directors' retainer for Board services under the 2023 Amended and Restated Omnibus Incentive Plan. The restricted stock units vest on the one-year anniversary of the grant date contingent upon the reporting person's continued service as director upon such date.

Restricted stock units are not exercisable and do not have an expiration date.

Represents an annual grant of restricted stock units to the reporting person on May 7, 2026 as the equity portion of the non-employee directors' retainer for Board services under the 2023 Amended and Restated Omnibus Incentive Plan. The restricted stock units vest on the one-year anniversary of the grant date contingent upon the reporting person's continued service as director upon such date.

Restricted stock units are not exercisable and do not have an expiration date.

Represents an annual grant of restricted stock units to the reporting person on May 7, 2026 as the equity portion of the non-employee directors' retainer for Board services under the 2023 Amended and Restated Omnibus Incentive Plan. The restricted stock units vest on the one-year anniversary of the grant date contingent upon the reporting person's continued service as director upon such date.

Restricted stock units are not exercisable and do not have an expiration date.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert to common stock on a one-for-one basis.

Restricted stock units are not exercisable and do not have an expiration date.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert into common stock on a one-for-one basis.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units covert to common stock on a one-for-one basis.

Of this total amount of 7,897 shares: (A) 2,313 shares were issued and are held directly by the reporting person, and the reporting person has instructions in place to transfer the 2,313 shares to The Shirley Family Trust; and (B) 5,584 shares are held indirectly by The Shirley Family Trust, for which the reporting person and his spouse serve as trustees and are beneficiaries.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert into common stock on a one-for-one basis.

Amount includes a total of 2.409 shares acquired through the Dividend Reinvestment Plan. The numbers reported herein are rounded down to the nearest number.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert into common stock on a one-for-one basis.

Restricted stock units are not exercisable and do not have an expiration date.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units covert to common stock on a one-for-one basis.

Of this total amount of 8,487 shares: (A) 2,313 shares were issued and are held directly by the reporting person, and the reporting person has instructions in place to transfer the 2,313 shares to The Delsanto Family Trust; and (B) 6,174 shares are held indirectly by The Delsanto Family Trust, for which the reporting person serves as a trustee.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert into common stock on a one-for-one basis.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert into common stock on a one-for-one basis.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert into common stock on a one-for-one basis.

Restricted stock units are not exercisable and do not have an expiration date.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert to common stock on a one-for-one basis.

Of this total amount of 3,820 shares: (A) 2,313 shares were issued and are held directly by the reporting person, and the reporting person has instructions in place to transfer the 2,313 shares to the 1998 Ball Family Trust; and (B) 1,507 shares are held indirectly by the 1998 Ball Family Trust, which includes a total of 189 shares acquired through the Dividend Reinvestment Plan.

On May 2, 2025, the reporting person was granted 3,029 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert to common stock on a one-for-one basis.

Restricted stock units are not exercisable and do not have an expiration date.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert into common stock on a one-for-one basis.

Restricted stock units are not exercisable and do not have an expiration date.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units covert to common stock on a one-for-one basis.

Restricted stock units are not exercisable and do not have an expiration date.

On May 2, 2025, the reporting person was granted 3,029 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert to common stock on a one-for-one basis.

Amount includes a total of 402.093 shares acquired through the Dividend Reinvestment Plan. The numbers reported herein are rounded down to the nearest number.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert into common stock on a one-for-one basis.

Restricted stock units are not exercisable and do not have an expiration date.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units covert to common stock on a one-for-one basis.

Restricted stock units are not exercisable and do not have an expiration date.

On May 2, 2025, the reporting person was granted 2,313 restricted stock units, which vested on the one-year anniversary of the grant date. Restricted stock units convert into common stock on a one-for-one basis.

The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on November 12, 2025.

Amount includes 33.198 shares acquired through the Dividend Reinvestment Plan. The numbers reported herein are rounded to the nearest number.

The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2025.

Shares held by The Delsanto Family Trust, for which the reporting person serves as a trustee.

The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 20, 2025.

Includes 1,158 shares previously omitted from the Column 5 total due to an administrative error in a Form 4 originally filed on February 21, 2025, which was corrected by an amendment thereto filed on March 19, 2026.

The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 13, 2025.

Shares held by The Delsanto Family Trust, for which the reporting person serves as a trustee.

The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 12, 2025.

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

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.

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

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.

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

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.

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

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.

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

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.

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

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.

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

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.

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

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.

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

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.

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

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.

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

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.

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

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

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.

The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 3, 2025.

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $319.22 to $320.19, 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.

The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 3, 2025.

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $322.10 to $323.00, 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.

The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 3, 2025.

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $324.99 to $325.74, 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.

The reported sale was made pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on December 3, 2025.

Represents the weighted average sale price. These shares were sold in multiple transactions at prices ranging from $326.50 to $327.26, 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.