=== SEC Form 4 — Statement of Changes in Beneficial Ownership ===
Document Type: 4
Period of Report: 2026-09-08
10b5-1 Pre-arranged Plan: Yes
--- Issuer ---
Name: Roblox Corp (RBLX)
CIK: 0001315098
--- Reporting Owner ---
Name: Reinstra Mark
CIK: 0001835037
Role: Officer (Chief Legal Off. & Corp. Sec.)
--- Non-Derivative Transactions ---
[Transaction #1]
Security: Class A Common Stock
Date: 2026-09-08 | Code: S (Open market sale)
Shares: -1,920 | Price: $44.30
Total Value: $85,047.74
Shares Owned After: 396,144 | Ownership: D (Direct)
Footnotes:
[F1] The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 19, 2026.
[F2] The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $43.71 to $44.67, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
[F3] 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.
[Transaction #2]
Security: Class A Common Stock
Date: 2026-09-08 | Code: S (Open market sale)
Shares: -3,753 | Price: $45.03
Total Value: $169,000.22
Shares Owned After: 392,391 | Ownership: D (Direct)
Footnotes:
[F1] The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 19, 2026.
[F4] The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $44.71 to $45.63, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
[F3] 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.
[Transaction #3]
Security: Class A Common Stock
Date: 2026-09-08 | Code: S (Open market sale)
Shares: -100 | Price: $45.73
Total Value: $4,573.00
Shares Owned After: 392,291 | Ownership: D (Direct)
Footnotes:
[F1] The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 19, 2026.
[F3] 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.
--- Holdings ---
[Holding #1]
Security: Class A Common Stock
Ownership: I (Indirect)
Footnotes:
[F5] These shares are held directly by the San Domenico Trust dated August 12, 1999 for which the Reporting Person serves as trustee. The Reporting Person may be deemed to have beneficial ownership over the securities held by the trust.
[Holding #2]
Security: Class A Common Stock
Ownership: I (Indirect)
Footnotes:
[F6] These shares are held directly by the Mark L. Reinstra 2023 Annuity Trust for which the Reporting Person serves as trustee. The Reporting Person may be deemed to have beneficial ownership of the securities held by the Annuity Trust.
[Holding #3]
Security: Class A Common Stock
Ownership: I (Indirect)
Footnotes:
[F7] These shares are held directly by the Mark L. Reinstra 2022 Annuity Trust for which the Reporting Person serves as trustee. The Reporting Person may be deemed to have beneficial ownership of the securities held by the Annuity Trust.
[Holding #4]
Security: Class A Common Stock
Ownership: I (Indirect)
Footnotes:
[F8] These shares are held directly by the Susan P. Reinstra 2023 Annuity Trust for which the Reporting Person serves as trustee. The spouse of the Reporting Person may be deemed to have beneficial ownership of the securities held by the Annuity Trust.
[Holding #5]
Security: Class A Common Stock
Ownership: I (Indirect)
Footnotes:
[F9] These shares are held directly by the Susan P. Reinstra 2022 Annuity Trust for which the Reporting Person serves as trustee. The spouse of the Reporting Person may be deemed to have beneficial ownership of the securities held by the Annuity Trust.
--- Footnotes (Complete Index) ---
F1: The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on February 19, 2026.
F2: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $43.71 to $44.67, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F3: 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.
F4: The price reported in column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $44.71 to $45.63, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.
F5: These shares are held directly by the San Domenico Trust dated August 12, 1999 for which the Reporting Person serves as trustee. The Reporting Person may be deemed to have beneficial ownership over the securities held by the trust.
F6: These shares are held directly by the Mark L. Reinstra 2023 Annuity Trust for which the Reporting Person serves as trustee. The Reporting Person may be deemed to have beneficial ownership of the securities held by the Annuity Trust.
F7: These shares are held directly by the Mark L. Reinstra 2022 Annuity Trust for which the Reporting Person serves as trustee. The Reporting Person may be deemed to have beneficial ownership of the securities held by the Annuity Trust.
F8: These shares are held directly by the Susan P. Reinstra 2023 Annuity Trust for which the Reporting Person serves as trustee. The spouse of the Reporting Person may be deemed to have beneficial ownership of the securities held by the Annuity Trust.
F9: These shares are held directly by the Susan P. Reinstra 2022 Annuity Trust for which the Reporting Person serves as trustee. The spouse of the Reporting Person may be deemed to have beneficial ownership of the securities held by the Annuity Trust.
--- Signature ---
/s/ /s/ Mark Reinstra (2026-09-09)
