X0306 4 2021-08-02 0 0001484778 ThredUp Inc. TDUP 0001420392 GS INVESTMENT STRATEGIES, LLC 200 WEST STREET NEW YORK NY 10282 0 0 1 0 Class A Common Stock 2021-08-02 4 C 0 516331 A 516331 I See Footnote Class A Common Stock 2021-08-02 4 C 0 563469 A 563469 I See Footnote Class A Common Stock 2021-08-02 4 S 0 516331 23.1586 D 0 I See Footnote Class A Common Stock 2021-08-02 4 S 0 563469 23.1586 D 0 I See Footnote Class B Common Stock 2021-08-02 4 C 0 516331 0.00 D Class A Common Stock 516331 4646977 I See Footnote Class B Common Stock 2021-08-02 4 C 0 563469 0.00 D Class A Common Stock 563469 5071228 I See Footnote On August 2, 2021, Global Private Opportunities Partners II LP ("GPO II LP") converted 516,331 shares of Class B Common Stock for 516,331 shares of Class A Common Stock. These shares are held of record by GPO II LP. GS Investment Strategies, LLC ("GSIS"), a limited liability company incorporated under the laws of Delaware, is the investment manager of the GPOP II. GSIS disclaims beneficial ownership of all shares of Common Stock in excess of their pecuniary interest, if any, and this report shall not be deemed an admission that any such person or entity is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. On August 2, 2021, Global Private Opportunities Partners II Offshore Holdings LP ("GPO II Offshore") converted 563,469 shares of Class B Common Stock for 563,469 shares of Class A Common Stock. These shares are held of record by GPO II Offshore. GSIS is the investment manager of the GPOP II Offshore. GSIS disclaims beneficial ownership of all shares of Common Stock in excess of their pecuniary interest, if any, and this report shall not be deemed an admission that any such person or entity is the beneficial owner of, or has any pecuniary interest in, such securities for purposes of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. Represents shares of Class A Common Stock sold in a secondary offering of Class A Common Stock by certain selling stockholders of the Issuer. Each share of Class B Common Stock is convertible into one share of Class A Common Stock at the option of the holder and upon the occurrence of other events set forth in the Issuer's Certificate of Incorporation. /s/ Adam Van de Berghe, Authorized Signatory for GS Investment Strategies, LLC 2021-08-02