[Form 4] Roblox Corp Insider Trading Activity

Rhea-AI Filing Summary

Mark Reinstra, Chief Legal Officer and Corporate Secretary of Roblox Corporation (RBLX), reported on Form 4 that on 09/30/2025 he acquired 16,046 restricted stock units (RSUs) at a $0 price. Each RSU represents a contingent right to one share of Class A common stock; 1/12th of these RSUs vests on November 20, 2025 and then 1/12th quarterly thereafter, subject to continued service. Following the transaction, the reporting person beneficially owns 389,715 shares. The filing also discloses additional indirect holdings of 116,630, 35,359, 16,653, 35,359, and 16,653 Class A shares held in various trusts for which he serves as trustee.

Positive

• Received 16,046 RSUs with a clear vesting schedule starting 11/20/2025, demonstrating continued executive compensation alignment with shareholder interests
• High level of beneficial ownership (389,715 shares) including direct and indirect holdings, indicating meaningful insider stake

Negative

• None.

Insights

Corporate Governance Expert

TL;DR: Routine insider RSU vesting and grant for a senior officer; notable cumulative beneficial ownership but no new derivative or sale activity reported.

The Form 4 documents a grant/acquisition of 16,046 RSUs and a clear vesting schedule beginning 11/20/2025, indicating standard equity compensation practices for an executive. The filing also details multiple indirect holdings through trusts for which the reporting person is trustee, contributing to a total reported beneficial ownership of 389,715 shares. There are no dispositions, option exercises, or derivative transactions disclosed. From a governance perspective, this is a routine disclosure consistent with service-based equity awards and trustee-held family trusts.

Securities Analyst

TL;DR: Insider received RSUs with scheduled vesting; transaction is dilutive only upon settlement but no immediate cash proceeds or sales were disclosed.

The transaction code indicates an acquisition of 16,046 RSUs at $0, which are contingent rights to Class A shares. Because RSUs convert to shares upon vesting, they may increase outstanding share count when settled, but the filing shows no sale or exercise activity. The reporting person's aggregate beneficial ownership of 389,715 shares is material to assessing insider alignment, and several trust-held blocks are specifically identified. No derivative instruments or changes to options are reported, limiting immediate market impact.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

1. Name and Address of Reporting Person^*

Reinstra Mark

(Last) (First) (Middle)

C/O ROBLOX CORPORATION

3150 S. DELAWARE ST.

(Street)

SAN MATEO CA 94403

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Roblox Corp [ RBLX ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	Chief Legal Off. & Corp. Sec.

3. Date of Earliest Transaction (Month/Day/Year)
09/30/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	09/30/2025		A		16,046(1)	A	$0	389,715(2)	D
Class A Common Stock								116,630	I	See footnote(3)
Class A Common Stock								35,359	I	See footnote(4)
Class A Common Stock								16,653	I	See Footnote(5)
Class A Common Stock								35,359	I	See footnote(6)
Class A Common Stock								16,653	I	See Footnotes(7)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. 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 November 20, 2025 and 1/12th of the RSUs shall vest quarterly thereafter, subject to the Reporting Person continuing as a service provider through each such date.

2. 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.

3. 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.

4. 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.

5. 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.

6. 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.

7. 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.

Remarks:

	/s/ Mark Reinstra	09/30/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What did Mark Reinstra report on Form 4 for RBLX?

The filing reports acquisition of 16,046 restricted stock units (RSUs) on 09/30/2025 and a total beneficial ownership of 389,715 Class A shares.

What is the vesting schedule for the RSUs acquired by Mark Reinstra?

Each RSU vests with 1/12th on November 20, 2025 and then 1/12th quarterly thereafter, subject to continued service.

Were any sales or derivative transactions reported in this Form 4?

No. The Form 4 discloses an acquisition of RSUs and lists existing direct and indirect holdings; no dispositions, derivative transactions, or option exercises are reported.

Why does the filing list multiple indirect holdings for Reinstra?

The filing identifies shares held in several trusts (e.g., San Domenico Trust and various Annuity Trusts) for which the reporting person serves as trustee and thus may be deemed to have beneficial ownership.

What price was reported for the acquired RSUs?

The RSUs were reported with a price of $0, reflecting that they are contingent awards rather than purchases.