X0206 3 2021-06-09 0 0001600641 1stdibs.com, Inc. DIBS 0001843245 Nguyen Tu 51 ASTOR PLACE, 3RD FLOOR NEW YORK NY 10003 0 1 0 0 Chief Financial Officer Common Stock 21748 D Employee Stock Option (right to buy) 4.02 2027-07-27 Common Stock 1666 D Employee Stock Option (right to buy) 4.11 2028-05-15 Common Stock 5000 D Employee Stock Option (right to buy) 4.47 2028-11-29 Common Stock 25000 D Employee Stock Option (right to buy) 4.56 2029-05-14 Common Stock 16666 D Employee Stock Option (right to buy) 4.59 2030-06-19 Common Stock 136000 D Employee Stock Option (right to buy) 9.45 2031-03-19 Common Stock 29500 D Employee Stock Option (right to buy) 9.45 2031-03-19 Common Stock 68833 D Option vests over four years with 1/48th of the shares vesting on each monthly anniversary of March 1, 2017, subject to the reporting person's continued service with the Issuer through the applicable vesting date. Option vests over four years with 1/48th of the shares vesting on each monthly anniversary of March 1, 2018, subject to the reporting person's continued service with the Issuer through the applicable vesting date. Option vests over four years with 1/48th of the shares vesting on each monthly anniversary of November 1, 2018, subject to the reporting person's continued service with the Issuer through the applicable vesting date. Option vests over four years with 1/48th of the shares vesting on each monthly anniversary of March 1, 2019, subject to the reporting person's continued service with the Issuer through the applicable vesting date. Represents an initial option to purchase 450,000 shares of common stock (prior to giving effect to a 1-for-3 reverse stock split), with 1/48th of the shares vesting on each monthly anniversary of March 1, 2020, subject to the reporting person's continued service with the Issuer through the applicable vesting date. Option vests over four years with 1/48th of the shares vesting on each monthly anniversary of March 1, 2021, subject to the reporting person's continued service with the Issuer through the applicable vesting date. Option vests over four years, with 20.8333% of the shares vesting on January 1, 2022, and with 79.1667% of the shares vesting in 38 equal monthly installments thereafter, subject to the consummation of the Issuer's initial public offering and the reporting person's continued service with the Issuer through the applicable vesting date. Exhibit List: Exhibit 24 - Power of Attorney By: /s/ Tu Nguyen 2021-06-09