X0306 4 2022-07-15 0 0001341235 Aldeyra Therapeutics, Inc. ALDX 0001579179 Brady Todd C C/O ALDEYRA THERAPEUTICS, INC. 131 HARTWELL AVENUE LEXINGTON MA 02421 1 1 0 0 President and CEO Bonus Units 2022-07-15 4 A 0 604308 0.00 A Common Stock 604308 604308 D Subject to and conditioned upon the acceptance by the U.S. Food and Drug Administration of the Issuer's submission of a New Drug Application for reproxalap, the bonus units vest ratably in equal annual installments over a four-year period beginning on July 15, 2022, provided that the Reporting Person has provided continuous service to the Issuer through the applicable vesting date. The Reporting Person will be entitled to receive a cash payment for each vested bonus unit, on the earlier of (i) four (4) years from the date of grant or (ii) a Change of Control of the Issuer (as defined in the grant documents), equal in value to the closing price per share of the Company's common stock on The Nasdaq Capital Market on the payment date. /s/ Todd C. Brady 2022-07-19