UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 8, 2017

ALDEYRA THERAPEUTICS, INC.

(Exact name of Registrant as specified in its charter)

Delaware

(State or other jurisdiction of incorporation)

131 Hartwell Avenue, Suite 320

Lexington, MA 02421

(Address of principal executive offices and zip code)

Registrant’s telephone number, including area code: (781) 761-4904

(Former Name or Former Address, if Changed Since Last Report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company  ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☒

At the 2017 annual meeting of stockholders (the “Annual Meeting”) of Aldeyra Therapeutics, Inc. (the “Company”) held on June 8, 2017, the following proposals were submitted to the stockholders of the Company:

For more information about the foregoing proposals, see the Company’s definitive proxy statement on Schedule 14A filed with the United States Securities and Exchange Commission on April 24, 2017 (the “Proxy Statement”). Of the 15,131,880 shares of the Company’s common stock entitled to vote at the Annual Meeting, 11,622,334 shares, or approximately 76.8%, were represented at the meeting in person or by proxy, constituting a quorum. The number of votes cast for, against or withheld, as well as abstentions and broker non-votes, if applicable, in respect of each such proposal is set forth below:

The Company’s stockholders elected the following directors to serve as Class III directors until the 2020 annual meeting of stockholders or until their successors are duly elected and qualified. The votes regarding the election of the directors were as follows:

The Company’s stockholders ratified the appointment of BDO USA, LLP as the Company’s independent registered public accounting firm for the fiscal year ending December 31, 2017. The votes regarding this proposal were as follows:

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

Dated: June 9, 2017