X0306 4 2021-03-10 1 0001315098 Roblox Corp RBLX 0001638260 Index Ventures Growth III (Jersey), L.P. 5TH FLOOR, 44 ESPLANADE ST. HELIER Y9 JE1 3FG JERSEY 0 0 1 0 0001591294 Yucca (Jersey) SLP 5TH FLOOR, 44 ESPLANADE ST. HELIER Y9 JE1 3FG JERSEY 0 0 1 0 0001785453 Index Venture Growth Associates III Ltd 5TH FLOOR, 44 ESPLANADE ST. HELIER Y9 JE1 3FG JERSEY 0 0 1 0 Class A Common Stock 2021-03-10 4 S 0 3048876 65.4228 D 49260640 D Class A Common Stock 2021-03-10 4 S 0 46431 65.4228 D 750191 I By Yucca (Jersey) SLP Class A Common Stock 2021-03-11 4 S 0 295500 73.5949 D 48965140 D Class A Common Stock 2021-03-11 4 S 0 4500 73.5949 D 745691 I By Yucca (Jersey) SLP Class A Common Stock 2021-03-11 4 S 0 482876 75.9196 D 48482264 D Class A Common Stock 2021-03-11 4 S 0 7353 75.9196 D 738338 I By Yucca (Jersey) SLP The shares are held by Index Ventures Growth III (Jersey), L.P. ("Index Growth III"). Index Venture Growth Associates III Limited ("IVGA III") is the managing general partner of Index Growth III and disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any. The shares are held by Yucca (Jersey) SLP ("Yucca"). Yucca is the administrator of the Index co-investment vehicles that are contractually required to mirror the relevant Fund's investment in the issuer (in this case, Index Growth III). IVGA III disclaims Section 16 beneficial ownership of such shares except to the extent of its pecuniary interest therein, if any, and this report shall not be deemed an admission that such shares are beneficially owned by it for Section 16 or any other purpose. Index Ventures Growth III (Jersey), LP, By: Index Venture Growth Associates III Limited, as Managing General Partner, By: /s/ Nigel Greenwood, Director 2022-02-14 Index Venture Growth Associates III Limited, By: /s/ Nigel Greenwood, Director 2022-02-14 Yucca (Jersey) SLP, By: /s/ Nigel Greenwood, Authorized Signatory 2022-02-14