Roblox Corporation
A maker of a global online gaming and creation platform where millions of users play, build, and share their own games and virtual worlds. Players use the virtual currency Robux to buy items and experiences, and creators earn Robux they can trade for real money. It was founded in 2004 by David Baszucki and Erik Cassel, who had earlier built physics-education software together. The name "Roblox" blends "robots" and "blocks," and the platform was nearly called "GoBlocks" or "DynaBlocks" before settling on its final name.
Sold 20.0K
Sold 25.0K
Granted 13.17M · Sold 17.77M
Granted 5.2K · Sold 1.31M
Granted 1.20M · Sold 1.65M
Sold 16.0K
Sold 16.0K
Sold 450.0K
Granted 228.3K · Sold 729.5K
Granted 147.0K · Sold 116.9K
Granted 829.2K · Sold 439.8K
Granted 1.37M · Sold 987.8K
Granted 1.77M · Sold 1.29M
Granted 194.1K · Sold 317.8K
Granted 676.5K · Bought 30 · Sold 1.02M
Granted 429.8K · Sold 66.5K
Granted 192.8K · Sold 227.9K
Granted 460.8K · Sold 227.9K
Granted 198.0K · Sold 125.1K
Granted 60.1K · Sold 11.6K
Sold 20.3K
Granted 29.5K
Granted 8.7K
Sold 2.0K
Granted 30.1K · Bought 22 · Sold 22
Granted 29.4K · Sold 56.6K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Altos Ventures IV Reserve Fund, L.P.10% owner · 2 transactions | — | 84.20Mas of Nov 2021 | — | — | 20.0K |
| Altos Hybrid 2, L.P. +7 co-filers10% owner · 23 transactions | — | 81.68Mas of Jul 2023 | — | — | — |
| Altos Ventures Management Inc.10% owner · 4 transactions | — | 78.70Mas of Feb 2023 | — | — | 25.0K |
| Altos Ventures Management, Inc.10% owner · 1 transaction | — | 60.21Mas of Aug 2023 | — | — | — |
| Altos Hybrid 2, L.P. +6 co-filers10% owner · 8 transactions | — | 43.04Mas of Nov 2023 | — | — | — |
| Altos Hybrid 4 GP, LLC +5 co-filers10% owner · 7 transactions | — | 38.29Mas of Aug 2022 | — | — | — |
| Altos Roblox SPV 1, LLC +6 co-filers10% owner · 7 transactions | — | 33.72Mas of Feb 2024 | — | — | — |
| Baszucki DavidPresident & CEO, Director, 10% owner · 505 transactions | — | 23.49M | 13.17M | — | 17.77M |
| Altos Ventures Management Inc. +9 co-filers10% owner · 7 transactions | — | 22.43Mas of Aug 2022 | — | — | — |
| Lee Anthony PDirector · 243 transactions | — | 14.30M | 5.2K | — | 1.31M |
| Baszucki GregoryDirector · 102 transactions | — | 12.84M | 1.20M | — | 1.65M |
| Kim Han +4 co-filers10% owner · 4 transactions | — | 9.81Mas of Feb 2024 | — | — | — |
| Kim Han +3 co-filers10% owner · 5 transactions | — | 8.98Mas of Dec 2023 | — | — | — |
| Nam Hodong10% owner · 8 transactions | — | 8.73Mas of May 2024 | — | — | — |
| Kim Han +3 co-filers10% owner · 4 transactions | — | 8.19Mas of Nov 2023 | — | — | — |
| Altos Ventures Management Inc. +3 co-filers10% owner · 3 transactions | — | 7.44Mas of Jul 2023 | — | — | — |
| Altos Ventures Management Inc. +3 co-filers10% owner · 10 transactions | — | 5.83Mas of Jul 2023 | — | — | — |
| Kim Han +2 co-filers10% owner · 2 transactions | — | 5.33Mas of Feb 2023 | — | — | — |
| Kim Han +8 co-filers10% owner · 12 transactions | — | 3.89Mas of Aug 2022 | — | — | — |
| Altos Ventures Management Inc. +8 co-filers10% owner · 12 transactions | — | 3.89Mas of Aug 2022 | — | — | — |
| Altos Hybrid 2 GP, LLC +9 co-filers10% owner · 13 transactions | — | 3.76Mas of Nov 2021 | — | — | 16.0K |
| Kim Han +4 co-filers10% owner · 13 transactions | — | 3.76Mas of Nov 2021 | — | — | 16.0K |
| Kim Han10% owner · 16 transactions | — | 3.66Mas of Nov 2023 | — | — | 450.0K |
| Altos Ventures Management Inc. +4 co-filers10% owner · 8 transactions | — | 2.62Mas of Nov 2021 | — | — | — |
| Altos Ventures Management Inc. +4 co-filers10% owner · 8 transactions | — | 2.62Mas of Nov 2021 | — | — | — |
| Donato CraigChief Business Officer · 107 transactions | — | 1.31Mas of May 2023 | 228.3K | — | 729.5K |
| Carvalho ChristopherDirector · 24 transactions | -22.7% | 1.15M | 147.0K | — | 116.9K |
| Sturman DanielChief Technology Officer · 54 transactions | — | 693.3Kas of May 2024 | 829.2K | — | 439.8K |
| Reinstra MarkChief Legal Off. & Corp. Sec. · 139 transactions | — | 618.7K | 1.37M | — | 987.8K |
| Guthrie MichaelChief Financial Officer · 153 transactions | — | 603.7Kas of Jun 2025 | 1.77M | — | 1.29M |
| Chakravarthy ArvindChief People & Systems Officer · 37 transactions | — | 555.6K | 194.1K | — | 317.8K |
| Bronstein ManuelChief Product Officer · 104 transactions | -43.9% | 443.2Kas of Aug 2025 | 676.5K | 30 | 1.02M |
| Chopra Naveen K.Chief Financial Officer · 14 transactions | — | 363.2K | 429.8K | — | 66.5K |
| Kaufman Matthew DChief Safety Officer · 42 transactions | — | 335.1K | 192.8K | — | 227.9K |
| Messing BarbaraCMKtg & Communications Officer · 32 transactions | +1098% | 234.2Kas of Nov 2023 | 460.8K | — | 227.9K |
| Rawlings Amy MarieChief Accounting Officer · 63 transactions | — | 146.8K | 198.0K | — | 125.1K |
| Altos Hybrid 2, L.P. +5 co-filers10% owner · 7 transactions | — | 111.1Kas of Dec 2023 | — | — | — |
| Wong Andrea LDirector · 9 transactions | — | 92.9K | 60.1K | — | 11.6K |
| Buckley Sean JackChief People & Systems Officer · 6 transactions | — | 87.2K | — | — | 20.3K |
| Kilar JasonDirector · 14 transactions | — | 36.2K | 29.5K | — | — |
| Durkin Dennis MDirector · 3 transactions | — | 26.8K | 8.7K | — | — |
| Gupta DeepikaPrincipal Accounting Officer · 2 transactions | — | 21.4Kas of May 2022 | — | — | 2.0K |
| Mastantuono GinaDirector · 22 transactions | +258.8% | 18.3K | 30.1K | 22 | 22 |
| Tolley BrettPrincipal Accounting Officer · 34 transactions | -77.8% | 7.7Kas of Feb 2022 | 29.4K | — | 56.6K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 5 years: -26.89M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.