Roblox (RBLX) Chief Safety Officer Sells 6,000 Shares at $134.20

Roblox Corp insider Matthew D. Kaufman, Chief Safety Officer, reported the sale of 6,000 shares of Class A common stock on 09/04/2025 at a price of $134.20 per share.

Rhea-AI Filing Summary

Roblox Corp insider Matthew D. Kaufman, Chief Safety Officer, reported the sale of 6,000 shares of Class A common stock on 09/04/2025 at a price of $134.20 per share. The Form 4 shows 275,015 shares of Class A common stock remained beneficially owned by Kaufman after the reported transaction. The filing states the sale was effected under a Rule 10b5-1 trading plan adopted November 1, 2024, and includes a note that some holdings are Restricted Stock Units (RSUs), each convertible into one share of Class A common stock. The Form 4 was signed by an attorney-in-fact on behalf of Kaufman on 09/08/2025.

Positive

• Transaction executed under a Rule 10b5-1 trading plan
• Form 4 discloses remaining beneficial ownership and presence of RSUs
• Filing includes transaction price ($134.20) and transaction date (09/04/2025)

Negative

• Reporting person disposed of 6,000 shares

Insights

Financial Analyst

Routine insider sale under a 10b5-1 plan; transaction size is small relative to disclosed holdings.

The report documents a single open-market sale of 6,000 Class A shares at $134.20, executed pursuant to a Rule 10b5-1 plan adopted 11/01/2024. After the sale the reporting person beneficially owns 275,015 shares, including RSUs that convert into common stock. From an analytical perspective, the sale appears procedural rather than indicative of a strategic change, given the modest size of the disposition versus total reported holdings. Disclosure of the 10b5-1 plan reduces the likelihood this trade was timed based on material nonpublic information.

Corporate Governance Expert

Governance disclosure is clear and follows standard practices for prearranged trading plans.

The Form 4 includes required detail: transaction date (09/04/2025), price ($134.20), and remaining beneficial ownership (275,015 shares). The filing specifically states the trade was made under a Rule 10b5-1 plan adopted 11/01/2024 and notes RSUs in the ownership mix. The use of an attorney-in-fact signature is indicated. This level of disclosure aligns with Section 16 reporting expectations and provides investors transparent record of officer trading activity.

Insider Trade Summary

Net Seller: 6,000 shares

Net Sell 1 txn

Insider Kaufman Matthew D

Role Chief Safety Officer

Sold 6,000 shs ($805K)

Type	Security	Shares	Price	Value
Sale	Class A Common Stock	6,000	$134.20	$805K

Holdings After Transaction: Class A Common Stock — 275,015 shares (Direct)

Footnotes (2)

1. F1. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on November 01, 2024.
2. 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.

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did Matthew D. Kaufman disclose on Form 4 for RBLX?

Kaufman reported the sale of 6,000 Class A shares at $134.20 on 09/04/2025 and retained beneficial ownership of 275,015 shares.

Was the RBLX insider sale part of a prearranged plan?

Yes. The Form 4 states the transaction was effected pursuant to a Rule 10b5-1 plan adopted on 11/01/2024.

Are any of the reported RBLX holdings restricted?

Yes. The filing notes a portion of the holdings are Restricted Stock Units (RSUs), each representing a contingent right to one share of Class A common stock.

When was the Form 4 filed and who signed it?

The Form 4 shows an attorney-in-fact, Mark Reinstra, signed on behalf of Matthew D. Kaufman on 09/08/2025.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 09/08/2025 - 04:38 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

X

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Kaufman Matthew D

(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 Safety Officer

3. Date of Earliest Transaction (Month/Day/Year)
09/04/2025

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	09/04/2025		S(1)		6,000	D	$134.2	275,015(2)	D

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. The transactions reported in this Form 4 were effected pursuant to a Rule 10b5-1 Plan adopted by the Reporting Person on November 01, 2024.

2. 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.

Remarks:

	/s/ Mark Reinstra Attorney-in-Fact for Matthew D. Kaufman	09/08/2025
	** 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.