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   ☑ 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
☑	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):
☑	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)	Proposed maximum aggregate value of transaction:
	(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)	Filing Party:
	(4)	Date Filed:

Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to be held on $SULO 30, 2020, for Advanced Energy Industries, Inc. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet and is not a form for voting. We encourage you to access and review all of the important information contained in the proxy materials before voting. To view the proxy statement and annual report, go to www.proxydocs.com/aeis. To submit your vote while visiting this site, you will need the 12 digit control number in the box below. CCoommiissssiioonn rruruulleelesss,,,pprproorxxoyyxymaamtteearrtieiaarllsisaddldso dnott hnhaoavtvehave bbee dddiisissttrtrriibibbuuutteteedddbbybyymamakkaiinnkgginttgthheetmmheaamvvaaiillvaabillleabolnen tthoeen fpffoorrror ocooeuudrru22r00e22s00fAAoAnrnnnnuouaualrl M2ee0ee2ttii0nnggAaannddunael edMYeOOeOtUinRg the and tthhee pprrooxxyy maattteeerrriiaiaallslss,,,yyyoouummuussstttrerreeqqquuueeessst ttoonnee. T.. hTehreerre r ttoo rreecceeiivvee aa ppaappeerr ppaacckkkaaaggeeeiinintttiiimimeeeffoforrrttththisiisyyeeaarr’rs’’s bobbereeffoborereefoArppeprr$iillS22U00LO,, 222000,222000.. 20. View Proxy Materials and Annual Report Online at www.proxydocs.com/aeis A convenient way to view proxy materials and VOTE! Have the 12 digit control number available when you access the website and follow the instructions. Material may be requested by one of the following methods: * If requesting material by e-mail, please send a blank e-mail with the 12 digit control number (located below) in the subject line. No other requests, instructions or other inquiries should be included with your e-mail requesting material. You must use the 12 digit control number located in the shaded gray box below. ACCOUNT NO. SHARES Advanced Energy Industries, Inc. Notice of Annual Meeting Date: Time: Place: Thursday, $SULO 30, 2020 9:00 A.M. (Mountain Daylight Time) 1595 :\QNRRS 6WUHHW, 6XLWH 800 Denver, CO 80202 The purpose of the Annual Meeting is to take action on the proposals listed below. The Board of Directors recommends that you vote “FOR” the following proposals: 1. Election of 8 Directors Nominees 01 *UDQW +. %HDUG 02 )UHGHULFN $. %DOO 03 Tina M. Donikowski 04 Ronald C. Foster 05 Edward C. Grady 06 Thomas M. Rohrs 07 John A. Roush 08 Yuval Wasserman 2. 3. Ratification of the appointment of Ernst & Young LLP as Advanced Energy’s independent registered public accounting firm for 2020. Advisory approval of Advanced Energy’s compensation of its named executive officers. 4. Should you require directions to the annual meeting, please call (970)-407-6826. Vote in Person Instructions: While we encourage shareholders to vote by the means indicated above, a shareholder is entitled to vote in person at the annual meeting. Additionally, a shareholder who has submitted a proxy before the meeting, may revoke that proxy in person at the annual meeting. *E-MAIL paper@investorelections.com TELEPHONE (866) 648-8133 INTERNET www.investorelections.com/aeis UUnnddeerr UUnnniittieetedddSttaSatteestseSseeccSuuerricittiuieerssitiaaeansndd aEnxxdcchaEnxgceehange ttoo bbbeeeddeedllieivvleeivrreerddeiidinn ppinaappeperar..pPerrroo. xxyPy rmoxaytterrmiiaallssteccraianls can IInntteerrnneett.. WWee hehaavveehcacchhvhoeoosseennchttoosuuessnee tthteeosse puprsroeccedtuhrreesse pnppaeaarrerttdiicciipYpaaOttiUioonRn.. participation. IIff yyoouu waanntt ttoo rreecceeiivvee aa ppaaappeeerrr oorrree---mmaaiilillccooppyyoofff iiss nnooccchhhaaarrrgggeeetttotooyyyooouuufoffororrerrqeequeuseetssitnttiingnga acaocpoyp.yIyn.. IoInrdoerrdrde aannnnuuaall meeeeetttiiinnggg,,,ppplleeleaaassseeemmaakkaeeketthitishsirrseqrueuqesustteoosontn orr