UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549


SCHEDULE 14A


Proxy Statement Pursuant to Section 14(a) of

the Securities Exchange Act of 1934

(Amendment No.    )

Filed by the Registrant   þ

Filed by a Party other than the Registrant   

Check the appropriate box:

Preliminary Proxy Statement

Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

Definitive Proxy Statement

þ

Definitive Additional Materials

Soliciting Material Pursuant to §240.14a-12

ADVANCED ENERGY INDUSTRIES, INC.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

þ

No fee required.

Fee computed on table below per Exchange Act Rules 14a-6(i)(1) and 0-11.

(1)

Title of each class of securities to which transaction applies:

(2)

Aggregate number of securities to which transaction applies:

(3)

Per unit price or other underlying value of transaction computed pursuant to Exchange Act Rule 0-11 (set forth the amount on which the filing fee is calculated and state how it was determined):

(4)

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(5)

Total fee paid:

Fee paid previously with preliminary materials.

Check box if any part of the fee is offset as provided by Exchange Act Rule 0-11(a)(2) and identify the filing for which the offsetting fee was paid previously. Identify the previous filing by registration statement number, or the Form or Schedule and the date of its filing.

(1)

Amount Previously Paid:

(2)

Form, Schedule or Registration Statement No.:

(3)

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(4)

Date Filed:


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P.O. BOX 8016, CARY, NC 27512-9903

Important Notice Regarding the Availability of Proxy Materials for Advanced Energy Industries, Inc.

Stockholders Meeting to be held on April 30, 2021

For Stockholders as of March 08, 2021

This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. This is not a ballot. You cannot use this notice to vote your shares. We encourage you to access and review all of the important information contained in the proxy materials before voting.

To view the proxy materials go to:
www.proxydocs.com/AEIS

To vote your proxy while visiting this site, you will need the 12 digit control number in the box below.

Under United States Securities and Exchange Commission rules, proxy materials do not have to be delivered in paper. Proxy materials can be distributed by making them available on the internet.

CONTROL NUMBER

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For a convenient way to view proxy materials and VOTE go to www.proxydocs.com/AEIS

Have the 12 digit control number located in the shaded box above available
when you access the website and follow the instructions.

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if you want to receive a paper or e-mail copy of the proxy material, you must request one. There is no charge to you for requesting a copy. In order to receive a paper package in time for this year’s shareholder meeting, you must make this request on or before April 19, 2021

To order paper materials, use one of the following methods.

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INTERNET

www.investorelections.com/AEIS

  

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TELEPHONE

(866) 648-8133

  

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* E-MAIL

paper@investorelections.com

When requesting via the internet or telephone you will need the 12 digit control number located in the shaded box above.

* If requesting material by e-mail, please send a blank
e-mail with the 12 digit control number (located above) in the subject line. No other requests, instructions or other inquiries should be included with your e-mail requesting material.

Advanced Energy Industries, Inc.

Meeting Information

Meeting Materials: Notice of Meeting and Proxy Statement & Annual Report or Form 10-K

Meeting Type: Annual Meeting of Stockholders

Date: Friday, April 30, 2021

Time: 09:00 AM, Mountain Daylight Time

Place: 1595 Wynkoop Street, Suite 800, Denver, CO 80202

SEE REVERSE FOR FULL AGENDA

Copyright © 2021 Mediant Communications Inc. All Rights Reserved


Advanced Energy Industries, Inc.

Annual Meeting of Stockholders

THE BOARD OF DIRECTORS RECOMMENDS A VOTE FOR PROPOSAL(S) 1, 2, 3, 4.

PROPOSAL

1.            Election of 10 Directors

1.01 Grant H. Beard

1.02 Frederick A. Ball

1.03 Anne T. DelSanto

1.04 Tina M. Donikowski

1.05 Ronald C. Foster

1.06 Edward C. Grady

1.07 Stephen D. Kelley

1.08 Lanesha T. Minnix

1.09 Thomas M. Rohrs

1.10 John A. Roush

2.            Ratification of the appointment of Ernst & Young LLP as Advanced Energy’s independent registered public accounting firm for 2021.

3.            Advisory approval of Advanced Energy’s compensation of its named executive officers.

4.            Approval of an increase in the total number of shares of common stock authorized for issuance under the Employee Stock Purchase Plan from 1,000,000 shares to 1,500,000 shares.