X0206 3 2021-07-21 0 0001845022 Couchbase, Inc. BASE 0001869739 Chow Margaret 3250 OLCOTT STREET SANTA CLARA CA 95054 0 1 0 0 SVP & Chief Legal Officer Stock Option (right to buy) 7.75 2030-06-23 Common Stock 163999 D Stock Option (right to buy) 21.40 2031-03-09 Common Stock 19999 D One fourth (1/4th) of the shares subject to the option vested on March 2, 2021 and one forty-eighth (1/48th) of the shares vest monthly thereafter, subject to the Reporting Person's continued service through each such date. One fourth (1/4th) of the shares subject to the option vest on February 1, 2022 and one forty-eighth (1/48th) of the shares vest monthly thereafter, subject to the Reporting Person's continued service through each such date. Exhibit 24 - Power of Attorney /s/ Margaret Chow 2021-07-21