X0306 5 2021-12-31 0 0 0 0001627475 UPWORK, INC UPWK 0001517236 GRETSCH GREGORY C. C/O UPWORK INC., 475 BRANNAN STREET, SUITE 430 SAN FRANCISCO CA 94107 1 0 0 0 Common Stock 2021-04-20 5 G 0 329336 0.00 D 635321 D Common Stock 2021-04-20 5 G 0 329336 0.00 A 329336 I By the Gretsch Revocable Trust DTD 5/30/2008 CommonStock 2021-04-23 5 G 0 392062 0.00 D 243259 D Common Stock 2021-04-23 5 G 0 392062 0.00 A 721398 I By the Gretsch Revocable Trust DTD 5/30/2008 Common Stock 2021-11-04 5 G 0 14792 0.00 D 228467 D Common Stock 2021-11-04 5 G 0 14792 0.00 A 736190 I By the Gretsch Revocable Trust DTD 5/30/2008 Common Stock 2021-11-04 5 G 0 14792 0.00 D 721398 I By the Gretsch Revocable Trust DTD 5/30/2008 Common Stock 716795 I By Gregory C. Gretsch Trust, UAD 1/28/00 Common Stock 25944 I By Trusts for Children Common Stock 266667 I By Martis Creek Investments, L.P. - Fund 3 Common Stock 95000 I By Martis Creek Investments, L.P. - Fund 4 Common Stock 769925 I By Martis Creek Investments, L.P. - Fund 5 The shares are held by the Gretsch Revocable Trust, DTD 5/30/2008, of which the Reporting Person is the trustee. Represents shares of Common Stock that the holder donated as a gift to a donor advised fund. The shares are held by the Gregory C. Gretsch Trust, UAD 1/28/00, of which the Reporting Person is the trustee. The Reporting Person has sole voting and dispositive power over the shares held by each of Martis Creek Investments, L.P. - Fund 3, Martis Creek Investments, L.P. - Fund 4, and Martis Creek Investments, L.P. - Fund 5. /s/Jacob McQuown, Attorney-in-Fact 2022-02-11