X0306 4 2021-02-22 0 0001469443 Arcadia Biosciences, Inc. RKDA 0001701600 Carosella Deborah D C/O ARCADIA BIOSCIENCES, INC., 202 COUSTEAU PLACE, SUITE 105 DAVIS CA 1 0 0 0 Stock Option (right to buy) 3.25 2021-02-22 4 A 0 21853 0.00 A 2031-02-22 Common Stock 21853 21853 D The shares subject to the Option shall vest and become exercisable in three (3) equal annual installments, with one-third of the shares subject to the Option vesting on each of the first three (3) anniversaries of the date of the award, subject to the Participant's continued service through each applicable vesting date. Deborah D. Carosella, by Attorney-in-Fact, Cesare Suardi 2021-02-24