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

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☐	Preliminary Proxy Statement
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☐	Definitive Proxy Statement
☒	Definitive Additional Materials
☐	Soliciting Material under §240.14a-12

EMCORE CORPORATION

(Name of Registrant as Specified In Its Charter)

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

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Important Notice Regarding the Availability of Proxy Materials for the Shareholder Meeting to be held on March 20, 2020, for EMCORE Corporation This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. 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/EMKR. To submit 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. We have chosen to use these procedures for our 2020 Annual Meeting and need YOUR participation. If you want to receive a paper or e-mail copy of the proxy materials, 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 annual meeting, please make this request on or before March 6, 2020. Printed materials may be requested by one of the following methods: INTERNET www.investorelections.com/EMKR You must use the 12 digit control number located in the shaded gray box below. TELEPHONE (866) 648-8133 *E-MAIL paper@investorelections.com * 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. Proxy Materials Available to View or Receive: 1. Proxy Statement 2. Annual Report For a Convenient Way to View Proxy Materials – and – VOTE Online go to: www.proxydocs.com/EMKR ACCOUNT NO. SHARES The purpose of the Annual Meeting is to take action on the following proposals: The Board of Directors recommends that you vote “FOR” the following. The Board of Directors recommends that you vote “FOR” the following. 2. To ratify the appointment of KPMG LLP as EMCORE’s independent registered public accounting firm for the fiscal year ending September 30, 2020. 3. To approve, on an advisory basis, the executive compensation of EMCORE’s Named Executive Officers. 1. Election of Directors Nominees 01 Rex S. Jackson 03 Bruce E. Grooms 02 Jeffrey Rittichier 04 Noel Heiks Date: Friday, March 20, 2020 Time: 8:00 A.M. (Local Time) Place: Hilton Pasadena, 168 S. Los Robles Ave., Pasadena CA 91101 EMCORE Corporation Notice of Annual Meeting