Form DEFA14A ThredUp Inc.

April 7, 2026 4:12 PM

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934 (Amendment No. )

Filed by the Registrant x Filed by a party other than the Registrant o

Check the appropriate box:


o						Preliminary Proxy Statement

o						Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

o						Definitive Proxy Statement

x						Definitive Additional Materials

o						Soliciting Material Pursuant to § 240.14a-12

THREDUP INC.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check all boxes that apply):


x						No fee required
o						Fee paid previously with preliminary materials
o						Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

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