DIBS

SEC source: 0001600641-24-000207 · wk-form4_1733965983.xml · derivative · entry 6

ROSENBLATT DAVID S · CIK 0001237860 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 337,500

Underlying: Common Stock · 37,500 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F3 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 16 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F3 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 16 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000207 · wk-form4_1733965983.xml · nonDerivative · entry 3

ROSENBLATT DAVID S · CIK 0001237860 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,676,017

F2 · shares: These shares were retained by 1stdibs, Inc. ("1stdibs") via settlement on a net withholding basis in order to meet the tax withholding obligations of the reporting person in connection with the vesting of an installment of restricted stock units ("RSUs") granted to the reporting person on March 15, 2023 and March 8, 2024. None of these shares were sold in an open market transaction.

SEC source: 0001600641-24-000207 · wk-form4_1733965983.xml · nonDerivative · entry 2

ROSENBLATT DAVID S · CIK 0001237860 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,722,980

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000207 · wk-form4_1733965983.xml · nonDerivative · entry 1

ROSENBLATT DAVID S · CIK 0001237860 · Director · Chief Executive Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,675,480

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000211 · wk-form4_1733966023.xml · derivative · entry 7

Etergino Thomas J · CIK 0001336088 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 145,275

Underlying: Common Stock · 11,175 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F5 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 16 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F5 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 16 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000211 · wk-form4_1733966023.xml · derivative · entry 6

Etergino Thomas J · CIK 0001336088 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 70,519

Underlying: Common Stock · 14,104 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F4 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F4 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000211 · wk-form4_1733966023.xml · derivative · entry 5

Etergino Thomas J · CIK 0001336088 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 99,375

Underlying: Common Stock · 16,563 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F3 · derivative.exercise_date: Twenty-five percent (25%) of the restricted stock units shall vest on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. Thereafter, the remaining seventy-five percent (75%) of the restricted stock units shall vest in 12 equal quarterly installments starting on September 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F3 · derivative.expiration_date: Twenty-five percent (25%) of the restricted stock units shall vest on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. Thereafter, the remaining seventy-five percent (75%) of the restricted stock units shall vest in 12 equal quarterly installments starting on September 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000211 · wk-form4_1733966023.xml · nonDerivative · entry 4

Etergino Thomas J · CIK 0001336088 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 146,660

F2 · shares: These shares were retained by 1stdibs, Inc. ("1stdibs") via settlement on a net withholding basis in order to meet the tax withholding obligations of the reporting person in connection with the vesting of an installment of restricted stock units ("RSUs") granted to the reporting person on June 2, 2022, March 14, 2023, and March 15, 2024. None of these shares were sold in an open market transaction.

SEC source: 0001600641-24-000211 · wk-form4_1733966023.xml · nonDerivative · entry 3

Etergino Thomas J · CIK 0001336088 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 168,022

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000211 · wk-form4_1733966023.xml · nonDerivative · entry 2

Etergino Thomas J · CIK 0001336088 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 156,847

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000211 · wk-form4_1733966023.xml · nonDerivative · entry 1

Etergino Thomas J · CIK 0001336088 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 142,743

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000210 · wk-form4_1733966013.xml · derivative · entry 9

Goins Melanie F · CIK 0001775877 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 80,910

Underlying: Common Stock · 8,990 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F6 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F6 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000210 · wk-form4_1733966013.xml · derivative · entry 8

Goins Melanie F · CIK 0001775877 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 44,157

Underlying: Common Stock · 8,831 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F5 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F5 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000210 · wk-form4_1733966013.xml · derivative · entry 7

Goins Melanie F · CIK 0001775877 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,666

Underlying: Common Stock · 2,666 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F4 · derivative.exercise_date: Fifty percent (50%) of the initial number of restricted stock units granted shall vest in 4 equal quarterly installments starting on June 8, 2022, provided the Reporting Person continues to have a service relationship with the Issuer at such time. Thereafter, fifty percent (50%) of the initial number of restricted stock units granted shall vest in 8 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F4 · derivative.expiration_date: Fifty percent (50%) of the initial number of restricted stock units granted shall vest in 4 equal quarterly installments starting on June 8, 2022, provided the Reporting Person continues to have a service relationship with the Issuer at such time. Thereafter, fifty percent (50%) of the initial number of restricted stock units granted shall vest in 8 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000210 · wk-form4_1733966013.xml · derivative · entry 6

Goins Melanie F · CIK 0001775877 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,657

Underlying: Common Stock · 5,331 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F3 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 16 equal quarterly installments starting on June 8, 2022, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F3 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 16 equal quarterly installments starting on June 8, 2022, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000210 · wk-form4_1733966013.xml · nonDerivative · entry 5

Goins Melanie F · CIK 0001775877 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 126,033

F2 · shares: These shares were retained by 1stdibs, Inc. ("1stdibs") via settlement on a net withholding basis in order to meet the tax withholding obligations of the reporting person in connection with the vesting of an installment of restricted stock units ("RSUs") granted to the reporting person on March 15, 2022, March 14, 2023, and March 15, 2024. None of these shares were sold in an open market transaction.

SEC source: 0001600641-24-000210 · wk-form4_1733966013.xml · nonDerivative · entry 4

Goins Melanie F · CIK 0001775877 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,700

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000210 · wk-form4_1733966013.xml · nonDerivative · entry 3

Goins Melanie F · CIK 0001775877 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 128,710

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000210 · wk-form4_1733966013.xml · nonDerivative · entry 2

Goins Melanie F · CIK 0001775877 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 119,879

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000210 · wk-form4_1733966013.xml · nonDerivative · entry 1

Goins Melanie F · CIK 0001775877 · General Counsel

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,213

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000209 · wk-form4_1733966003.xml · derivative · entry 5

Beauchamp Ryan · CIK 0001968904 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 71,663

Underlying: Common Stock · 7,962 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F4 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F4 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000209 · wk-form4_1733966003.xml · derivative · entry 4

Beauchamp Ryan · CIK 0001968904 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 137,500

Underlying: Common Stock · 13,750 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F3 · derivative.exercise_date: Twenty-five percent (25%) of the restricted stock units shall vest on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. Thereafter, the remaining seventy-five percent (75%) of the restricted stock units shall vest in 12 equal quarterly installments starting on September 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F3 · derivative.expiration_date: Twenty-five percent (25%) of the restricted stock units shall vest on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. Thereafter, the remaining seventy-five percent (75%) of the restricted stock units shall vest in 12 equal quarterly installments starting on September 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000209 · wk-form4_1733966003.xml · nonDerivative · entry 3

Beauchamp Ryan · CIK 0001968904 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 68,032

F2 · shares: These shares were retained by 1stdibs, Inc. ("1stdibs") via settlement on a net withholding basis in order to meet the tax withholding obligations of the reporting person in connection with the vesting of an installment of restricted stock units ("RSUs") granted to the reporting person on June 14, 2023 and March 15, 2024. None of these shares were sold in an open market transaction.

SEC source: 0001600641-24-000209 · wk-form4_1733966003.xml · nonDerivative · entry 2

Beauchamp Ryan · CIK 0001968904 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 75,860

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000209 · wk-form4_1733966003.xml · nonDerivative · entry 1

Beauchamp Ryan · CIK 0001968904 · Chief Product Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 67,898

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000208 · wk-form4_1733965993.xml · derivative · entry 9

Hood Nancy · CIK 0001661732 · Chief Marketing Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 82,148

Underlying: Common Stock · 9,127 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F6 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F6 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000208 · wk-form4_1733965993.xml · derivative · entry 8

Hood Nancy · CIK 0001661732 · Chief Marketing Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 43,938

Underlying: Common Stock · 8,787 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F5 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F5 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000208 · wk-form4_1733965993.xml · derivative · entry 7

Hood Nancy · CIK 0001661732 · Chief Marketing Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,772

Underlying: Common Stock · 1,772 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F4 · derivative.exercise_date: Fifty percent (50%) of the initial number of restricted stock units granted shall vest in 4 equal quarterly installments starting on June 8, 2022, provided the Reporting Person continues to have a service relationship with the Issuer at such time. Thereafter, fifty percent (50%) of the initial number of restricted stock units granted shall vest in 8 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F4 · derivative.expiration_date: Fifty percent (50%) of the initial number of restricted stock units granted shall vest in 4 equal quarterly installments starting on June 8, 2022, provided the Reporting Person continues to have a service relationship with the Issuer at such time. Thereafter, fifty percent (50%) of the initial number of restricted stock units granted shall vest in 8 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000208 · wk-form4_1733965993.xml · derivative · entry 6

Hood Nancy · CIK 0001661732 · Chief Marketing Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 17,719

Underlying: Common Stock · 3,544 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F3 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 16 equal quarterly installments starting on June 8, 2022, provided the Reporting Person continues to have a service relationship with the Issuerat such time. The restricted stock units have no expiration date.

F3 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 16 equal quarterly installments starting on June 8, 2022, provided the Reporting Person continues to have a service relationship with the Issuerat such time. The restricted stock units have no expiration date.

SEC source: 0001600641-24-000208 · wk-form4_1733965993.xml · nonDerivative · entry 5

Hood Nancy · CIK 0001661732 · Chief Marketing Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,380

F2 · shares: These shares were retained by 1stdibs, Inc. ("1stdibs") via settlement on a net withholding basis in order to meet the tax withholding obligations of the reporting person in connection with the vesting of an installment of restricted stock units ("RSUs") granted to the reporting person on March 15, 2022, March 14, 2023, and March 15, 2024. None of these shares were sold in an open market transaction.

SEC source: 0001600641-24-000208 · wk-form4_1733965993.xml · nonDerivative · entry 4

Hood Nancy · CIK 0001661732 · Chief Marketing Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 123,732

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000208 · wk-form4_1733965993.xml · nonDerivative · entry 3

Hood Nancy · CIK 0001661732 · Chief Marketing Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 114,605

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000208 · wk-form4_1733965993.xml · nonDerivative · entry 2

Hood Nancy · CIK 0001661732 · Chief Marketing Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 105,818

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-24-000208 · wk-form4_1733965993.xml · nonDerivative · entry 1

Hood Nancy · CIK 0001661732 · Chief Marketing Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 104,046

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-25-000027 · wk-form4a_1741827152.xml · derivative · entry 7

Rubinger Matthew · CIK 0001898365 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 81,788

Underlying: Common Stock · 9,087 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F6 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F6 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-25-000027 · wk-form4a_1741827152.xml · derivative · entry 6

Rubinger Matthew · CIK 0001898365 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 46,023

Underlying: Common Stock · 9,205 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F5 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F5 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-25-000027 · wk-form4a_1741827152.xml · derivative · entry 5

Rubinger Matthew · CIK 0001898365 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 11,617

Underlying: Common Stock · 2,904 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F4 · derivative.exercise_date: Twenty-five percent (25%) of the restricted stock units shall vest on December 8, 2022, provided the Reporting Person continues to have a service relationship with the Issuer at such time. Thereafter, the remaining seventy-five percent (75%) of the restricted stock units shall vest in 12 equal quarterly installments starting on March 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F4 · derivative.expiration_date: Twenty-five percent (25%) of the restricted stock units shall vest on December 8, 2022, provided the Reporting Person continues to have a service relationship with the Issuer at such time. Thereafter, the remaining seventy-five percent (75%) of the restricted stock units shall vest in 12 equal quarterly installments starting on March 8, 2023, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

SEC source: 0001600641-25-000027 · wk-form4a_1741827152.xml · nonDerivative · entry 4

Rubinger Matthew · CIK 0001898365 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 34,163

F3 · shares: These shares were retained by 1stdibs, Inc. ("1stdibs") via settlement on a net withholding basis in order to meet the tax withholding obligations of the reporting person in connection with the vesting of an installment of restricted stock units ("RSUs") granted to the reporting person on December 9, 2021, March 14, 2023, and March 15, 2024. None of these shares were sold in an open market transaction.

SEC source: 0001600641-25-000027 · wk-form4a_1741827152.xml · nonDerivative · entry 3

Rubinger Matthew · CIK 0001898365 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,805

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-25-000027 · wk-form4a_1741827152.xml · nonDerivative · entry 2

Rubinger Matthew · CIK 0001898365 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 32,718

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

SEC source: 0001600641-25-000027 · wk-form4a_1741827152.xml · nonDerivative · entry 1

Rubinger Matthew · CIK 0001898365 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 23,513

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F2 · balance_after: The sales reported on this Form 4 were previously reported in a timely manner; however, the amounts included in Column 5, Amount of Securities Beneficially Owned Following Reported Transaction(s), were misstated due to a scrivener's error. This Amended Form 4 restates the amounts in Column 5. All other information regarding the sales was accurately reported.

SEC source: 0001600641-24-000199 · wk-form4_1732662502.xml · nonDerivative · entry 1

Rubinger Matthew · CIK 0001898365 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,477

SEC source: 0001600641-25-000025 · wk-form4a_1741826475.xml · nonDerivative · entry 1

Rubinger Matthew · CIK 0001898365 · Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 20,609

F1 · balance_after: The sale reported on this Form 4 was previously reported in a timely manner; however, the amount included in Column 5, Amount of Securities Beneficially Owned Following Reported Transaction(s), was misstated due to a scrivener's error. This Amended Form 4 restates the amount in Column 5. All other information regarding the sale was accurately reported.

SEC source: 0001600641-24-000189 · wk-form4_1729026741.xml · nonDerivative · entry 1

Etergino Thomas J · CIK 0001336088 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 126,180

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan, adopted May 13, 2024.

SEC source: 0001600641-24-000187 · wk-form4_1728608890.xml · nonDerivative · entry 3

Etergino Thomas J · CIK 0001336088 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 127,101

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan, adopted May 13, 2024.

SEC source: 0001600641-24-000187 · wk-form4_1728608890.xml · nonDerivative · entry 2

Etergino Thomas J · CIK 0001336088 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 129,917

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan, adopted May 13, 2024.

SEC source: 0001600641-24-000187 · wk-form4_1728608890.xml · nonDerivative · entry 1

Etergino Thomas J · CIK 0001336088 · Chief Financial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 131,410

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan, adopted May 13, 2024.

SEC source: 0001600641-24-000177 · wk-form4_1726698218.xml · nonDerivative · entry 1

Rubinger Matthew · CIK 0001898365 · Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,611

F1 · kind: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan, adopted September 15, 2023.

SEC source: 0001600641-24-000183 · wk-form4a_1728433980.xml · nonDerivative · entry 1

Rubinger Matthew · CIK 0001898365 · Chief Commercial Officer

10b5-1 filing: Plan reported

Ownership: Direct

Disclosed balance after: 32,611

F1 · kind: The sales reported on this Form 4 were previously reported in a timely manner and had been described as effected pursuant to a Rule 10b5-1 trading plan, adopted September 15, 2023. The sales of some of the shares were effected pursuant to a Rule 10b5-1 trading plan, adopted September 15, 2023, and also incorporated the non-discretionary sales of shares that were not part of such Rule 10b5-1 trading plan that had been inadvertently executed by the broker in accordance with plan directions. All other information regarding the sales was accurately reported.

SEC source: 0001600641-24-000171 · wk-form4_1726094547.xml · derivative · entry 7

Rubinger Matthew · CIK 0001898365 · Chief Commercial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 90,875

Underlying: Common Stock · 9,088 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of Issuer common stock.

F5 · derivative.exercise_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.

F5 · derivative.expiration_date: The initial number of restricted stock units granted shall vest in 12 equal quarterly installments starting on June 8, 2024, provided the Reporting Person continues to have a service relationship with the Issuer at such time. The restricted stock units have no expiration date.