X0306 4 2023-02-01 0 0001469443 Arcadia Biosciences, Inc. RKDA 0001960808 Schaefer Thomas J. C/O ARCADIA BIOSCIENCES 202 COUSTEAU PLACE, SUITE 105 DAVIS CA 95618 0 1 0 0 Chief Financial Officer Common Stock 2023-02-01 4 P 0 700 0.23 A 2800 D Reflects the purchase of 700 shares of the Issuer's common stock on 2/1/23 at a per share purchase price of $0.23 pursuant to participation in the Issuer's 2015 Employee Stock Purchase Plan ("ESPP"). This transaction is exempt from Rule 16b-3(c). In accordance with the ESPP, these shares were purchased at a price equal to 85% of the closing price of Issuer's common stock. The amount includes the 2015 Employee Stock Purchase Plan ("ESPP") purchases, for the purchase periods from February 1, 2021 to February 1, 2023. These transactions were exempt from Rule 16b-3(c). In accordance with the ESPP, these shares were purchased at a price equal to 85% of the closing price of Issuer's Common Stock on the date of each respective purchase. Thomas Schaefer, by Attorney-in-fact, Solaeta Chan 2023-02-02