Sean Sobers - 01 Sep 2025 Form 4 Insider Report for ThredUp Inc. (TDUP)

Role: Chief Financial Officer
Signature: /s/ Alon Rotem, Attorney-in-Fact
Issuer symbol: TDUP
Transactions as of: 01 Sep 2025
Net transactions value: -$546,475
Form type: 4
Filing time: 03 Sep 2025, 17:25:46 UTC
Previous filing: 08 Aug 2025
Next filing: 02 Dec 2025
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Sobers Sean	Chief Financial Officer	C/O THREDUP INC., 969 BROADWAY, SUITE 200, OAKLAND	/s/ Alon Rotem, Attorney-in-Fact	03 Sep 2025	0001688472

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	TDUP	Class A Common Stock	Options Exercise	$0	+36,958	+8.6%	$0.000000	464,348	01 Sep 2025	Direct
transaction	TDUP	Class A Common Stock	Tax liability	$203,070	-18,768	-4%	$10.82	445,580	01 Sep 2025	Direct	F1
transaction	TDUP	Class A Common Stock	Options Exercise	$0	+36,666	+8.2%	$0.000000	482,246	01 Sep 2025	Direct
transaction	TDUP	Class A Common Stock	Tax liability	$201,458	-18,619	-3.9%	$10.82	463,627	01 Sep 2025	Direct	F1
transaction	TDUP	Class A Common Stock	Options Exercise	$0	+25,834	+5.6%	$0.000000	489,461	01 Sep 2025	Direct
transaction	TDUP	Class A Common Stock	Tax liability	$141,948	-13,119	-2.7%	$10.82	476,342	01 Sep 2025	Direct	F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Underlying Class	Amount	Exercise Price	Ownership	Footnotes
transaction	TDUP	Restricted Stock Units	Options Exercise	$0	-36,958	-6.7%	$0.000000	515,292	01 Sep 2025	Class A Common Stock	36,958		Direct	F2, F3
transaction	TDUP	Restricted Stock Units	Options Exercise	$0	-36,666	-7.1%	$0.000000	478,626	01 Sep 2025	Class A Common Stock	36,666		Direct	F2, F4
transaction	TDUP	Restricted Stock Units	Options Exercise	$0	-25,834	-5.4%	$0.000000	452,792	01 Sep 2025	Class A Common Stock	25,834		Direct	F2, F5

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Represents shares of Class A Common Stock that were withheld by the Issuer to satisfy tax withholding obligations in connection with the vesting of RSUs.
F2	Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.
F3	On February 15, 2023, the Reporting Person was granted 443,495 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date.
F4	On February 26, 2024, the Reporting Person was granted 440,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date.
F5	On January 9, 2025, the Reporting Person was granted 310,000 RSUs, vesting in twelve equal quarterly installments on June 1, September 1, December 1 and March 1 until fully vested, subject to the Reporting Person's continued service to the Issuer on each such date.