Key facts
- This page summarizes Mark Reinstra's Form 4 filing for Roblox Corp (RBLX).
- 2 reported transactions and 1 derivative row are listed below.
- Accepted by SEC: 03 Mar 2026, 16:30.
Mark Reinstra - 01 Mar 2026 Form 4 Insider Report for Roblox Corp (RBLX)
- Reporting relationship
- Chief Legal Off. & Corp. Sec.
- Issuer ticker
- RBLX
- Reported as of
- 01 Mar 2026
- Net transaction value
- $0
- SEC form
- 4
- Accepted by SEC
- 03 Mar 2026, 16:30:09 UTC
- Prior SEC filing
- 24 Feb 2026
- Next SEC filing
- 15 Apr 2026
- Source filing
- View source filing
- Reporting owner signature
- /s/ Mark Reinstra
Source evidence
Original filing metadata and source links for verification.
5 source fields
Reporting owner
1 detail
Key filing fact
Mark Reinstra filed Form 4 for Roblox Corp (RBLX) on 03 Mar 2026.
Change
- Previous filing in this sequence was filed on 24 Feb 2026.
- Current net transaction value: $0.
Research use
- This tells you what this filing adds before you inspect full transaction and derivative tables.
- You can trace every row back to the original SEC filing document.
Evidence
Filed on Form 4
View source filing
Ownership activity is grounded in SEC Form 4 disclosures.
Reporting Owners (1)
CIK 0001835037
Primary reporting owner
Reinstra Mark
- Relationship
- Chief Legal Off. & Corp. Sec.
- Address
- C/O ROBLOX CORPORATION, 3150 S. DELAWARE ST., SAN MATEO
- Signature
- /s/ Mark Reinstra
- Signature date
- 03 Mar 2026
Reported non-derivative transactions
Shares, units, or other non-derivative securities reported in this filing.
RBLX
transaction
Class A Common Stock
Award
- Transaction value
- $0
- Shares
- +96,790
- Change %
- +26%
- Price
- $0.000000
- Shares after
- 474,126
- Date
- 01 Mar 2026
- Ownership
- Direct
- Footnotes
- F1, F2, F3
RBLX
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 120,272
- Date
- 01 Mar 2026
- Ownership
- See footnote
- Footnotes
- F4
RBLX
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 33,538
- Date
- 01 Mar 2026
- Ownership
- See footnote
- Footnotes
- F5
RBLX
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 16,653
- Date
- 01 Mar 2026
- Ownership
- See Footnote
- Footnotes
- F6
RBLX
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 33,538
- Date
- 01 Mar 2026
- Ownership
- See footnote
- Footnotes
- F7
RBLX
holding
Class A Common Stock
No transaction description listed
- Transaction value
- Shares
- Change %
- Price
- Shares after
- 16,653
- Date
- 01 Mar 2026
- Ownership
- See Footnotes
- Footnotes
- F8
Reported derivative securities
Options, warrants, convertible securities, or similar derivative positions disclosed in the filing.
RBLX
transaction
Derivative
Performance Stock Unit
Award
- Transaction value
- $0
- Shares
- +104,236
- Change %
- Price
- $0.000000
- Shares after
- 104,236
- Date
- 01 Mar 2026
- Ownership
- Direct
- Underlying class
- Class A Common Stock
- Underlying amount
- 104,236
- Exercise price
- Footnotes
- F9, F10, F11
* marks a reported price that did not pass the local price check.
Additional SEC filing notes
Filing notes and footnotes
Explanation of responses 11 footnotes
Footnote F1
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. 1/12th of the RSUs shall vest on May 20, 2026 and 1/12th of the RSUs shall vest quarterly thereafter, subject to the Reporting Person continuing as a service provider through each such date.
Footnote F2
A portion of these securities are RSUs. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock.
Footnote F3
Includes 200 shares acquired by the Reporting Person on February 25, 2026 pursuant to the Issuer's 2020 Employee Stock Purchase Plan.
Footnote F4
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.
Footnote F5
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.
Footnote F6
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.
Footnote F7
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.
Footnote F8
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.
Footnote F9
Each performance stock unit represents a contingent right to receive one share of the Issuer's Class A Common Stock.
Footnote F10
Represents that maximum number of shares of Class A Common Stock which may be issued under this award.
Footnote F11
The vesting of the performance stock units ("PSUs") is subject to satisfying performance-based requirements, including the achievement of certain Bookings and Covenant Adjusted EBITDA margin targets by the Issuer for two successive one-year periods beginning January 1, 2026 and a relative total shareholder return target by the Issuer during a two-year performance period from January 1, 2026 and December 31, 2027. Subject to continued service by the Reporting Person on the vesting date, 100% of the PSUs eligible to vest based on performance will vest following certification of performance results by our Leadership Development and Compensation Committee after the end of the two-year performance period on December 31, 2027.