Roblox (RBLX)

=== SEC Form 4 — Statement of Changes in Beneficial Ownership === Document Type: 4 Period of Report: 2026-08-20 10b5-1 Pre-arranged Plan: No --- Issuer --- Name: Roblox Corp (RBLX) CIK: 0001315098 --- Reporting Owner --- Name: Mastantuono Gina CIK: 0001465391 Role: Director --- Non-Derivative Transactions --- [Transaction #1] Security: Class A Common Stock Date: 2026-08-20 | Code: J (Other acquisition/disposition) Shares: -1,296 | Price: $0.00 Shares Owned After: 18,261 | Ownership: D (Direct) Footnotes: [F1] In connection with the vesting on August 20, 2026, of Restricted Stock Units ("RSUs") previously granted to the Reporting Person, the Reporting Person's receipt of 1,296 shares of Class A Common Stock was deferred, resulting in the Reporting Person's receipt instead of 1,296 shares of phantom stock pursuant to the Issuer's deferred compensation plan. The Reporting Person is therefore reporting the disposition of 1,296 shares of Class A Common Stock in exchange for an equal number of shares of phantom stock. [F1] In connection with the vesting on August 20, 2026, of Restricted Stock Units ("RSUs") previously granted to the Reporting Person, the Reporting Person's receipt of 1,296 shares of Class A Common Stock was deferred, resulting in the Reporting Person's receipt instead of 1,296 shares of phantom stock pursuant to the Issuer's deferred compensation plan. The Reporting Person is therefore reporting the disposition of 1,296 shares of Class A Common Stock in exchange for an equal number of shares of phantom stock. [F1] In connection with the vesting on August 20, 2026, of Restricted Stock Units ("RSUs") previously granted to the Reporting Person, the Reporting Person's receipt of 1,296 shares of Class A Common Stock was deferred, resulting in the Reporting Person's receipt instead of 1,296 shares of phantom stock pursuant to the Issuer's deferred compensation plan. The Reporting Person is therefore reporting the disposition of 1,296 shares of Class A Common Stock in exchange for an equal number of shares of phantom stock. [F2] A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. --- Derivative Transactions --- [Transaction #1] Security: Phantom Stock Date: 2026-08-20 | Code: J (Other acquisition/disposition) Shares: +1,296 | Price: $0.00 Shares Owned After: 1,296 | Ownership: D (Direct) Footnotes: [F3] Each share of phantom stock represents a right to receive one share of Class A common stock. [F1] In connection with the vesting on August 20, 2026, of Restricted Stock Units ("RSUs") previously granted to the Reporting Person, the Reporting Person's receipt of 1,296 shares of Class A Common Stock was deferred, resulting in the Reporting Person's receipt instead of 1,296 shares of phantom stock pursuant to the Issuer's deferred compensation plan. The Reporting Person is therefore reporting the disposition of 1,296 shares of Class A Common Stock in exchange for an equal number of shares of phantom stock. [F4] The phantom stock becomes payable in one lump sum payment upon separation from service. [F4] The phantom stock becomes payable in one lump sum payment upon separation from service. --- Footnotes (Complete Index) --- F1: In connection with the vesting on August 20, 2026, of Restricted Stock Units ("RSUs") previously granted to the Reporting Person, the Reporting Person's receipt of 1,296 shares of Class A Common Stock was deferred, resulting in the Reporting Person's receipt instead of 1,296 shares of phantom stock pursuant to the Issuer's deferred compensation plan. The Reporting Person is therefore reporting the disposition of 1,296 shares of Class A Common Stock in exchange for an equal number of shares of phantom stock. F2: A portion of these securities are Restricted Stock Units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. F3: Each share of phantom stock represents a right to receive one share of Class A common stock. F4: The phantom stock becomes payable in one lump sum payment upon separation from service. --- Signature --- /s/ /s/Mark Reinstra Attorney-in-Fact for Gina Mastantuono (2026-08-24)