Washington, D.C. 20549




(Rule 14a-101)

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934

(Amendment No.     )



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  Preliminary Proxy Statement
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  Definitive Proxy Statement
  Definitive Additional Materials
  Soliciting Material Pursuant to §240.14a-12


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*** Exercise Your Right to Vote ***

Important Notice Regarding the Availability of Proxy Materials for the

Stockholder Meeting to Be Held on June 7, 2018.


      Meeting Information
  ALDEYRA THERAPEUTICS, INC.     Meeting Type:     Annual Meeting
      For holders as of: April 13, 2018
      Date: June 7, 2018      Time: 10:00 AM, EDT
           Location:   Offices of Gunderson Dettmer Stough
        Villeneuve Franklin & Hachigian, LLP
        One Marina Park Drive, Suite 900
          Boston, MA 02210






You are receiving this communication because you hold shares in the company named above.


This is not a ballot. You cannot use this notice to vote these shares. This communication presents only an overview of the more complete proxy materials that are available to you on the Internet. You may view the proxy materials online at or easily request a paper copy (see reverse side).


We encourage you to access and review all of the important information contained in the proxy materials before voting.


    See the reverse side of this notice to obtain proxy materials and voting instructions.


— Before You Vote —

How to Access the Proxy Materials



Proxy Materials Available to VIEW or RECEIVE:




How to View Online:


Have the information that is printed in the box marked by the arrow LOGO (located on the following page) and visit:


How to Request and Receive a PAPER or E-MAIL Copy:


If you want to receive a paper or e-mail copy of these documents, you must request one. There is NO charge for requesting a copy. Please choose one of the following methods to make your request:



1) BY INTERNET:       


2) BY TELEPHONE:             1-800-579-1639


3) BY E-MAIL*:           



*   If requesting materials by e-mail, please send a blank e-mail with the information that is printed in the box marked by the arrow LOGO (located on the following page) in the subject line.


Requests, instructions and other inquiries sent to this e-mail address will NOT be forwarded to your investment advisor. Please make the request as instructed above on or before May 24, 2018 to facilitate timely delivery.



— How To Vote —

Please Choose One of the Following Voting Methods






Vote In Person: Many stockholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares.


Vote By Internet: To vote now by Internet, go to Have the information that is printed in the box marked by the arrow LOGO (located on the following page) available and follow the instructions.


Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card.


     Voting items  


  The Board of Directors recommends you vote
  FOR the following:
  1.     Election of Two Class I Directors
    01) Ben Bronstein, M.D.
    02) Jesse I. Treu, Ph.D.
  The Board of Directors recommends you vote FOR proposal 2.
  2.   To ratify the appointment of BDO USA, LLP as Aldeyra Therapeutics, Inc.’s independent registered public accounting firm for the year ending December 31, 2018.
  The Board of Directors recommends you vote FOR proposal 3.
  3.   To approve an amendment to Aldeyra Therapeutics’ 2013 Equity Incentive Plan (2013 Plan) to modify the automatic “evergreen” provisions regarding the number of shares to be annually added to the 2013 Plan and implement limitations on the value of equity that may be granted under the 2013 Plan to a non-employee director during a calendar year.
  NOTE: Such other business as may properly come before the meeting or any adjournment thereof.