Roblox (RBLX) Form 4 shows 1,125 RSUs swapped for phantom stock

Rhea-AI Filing Summary

Roblox Corporation (RBLX) director Gina Mastantuonto reported a compensation-related share deferral. On 11/20/2025, 1,125 vested Restricted Stock Units that would have delivered Class A common shares were instead deferred into 1,125 shares of phantom stock under Roblox’s deferred compensation plan. This is reported as a disposition of 1,125 Class A shares in exchange for an equal number of phantom stock units at a reported price of $0.

After the transaction, Mastantuonto beneficially owned 16,623 shares of Class A common stock and 2,250 shares of phantom stock held directly. Each RSU and each phantom stock share represents a right to receive one share of Roblox Class A common stock, with the phantom stock payable in a lump sum upon separation from service.

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).

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^*

Mastantuono Gina

(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)

X	Director		10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
11/20/2025

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	11/20/2025		J(1)		1,125	D	$0(1)	16,623(1)(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
Phantom Stock	(3)	11/20/2025		J(1)		1,125		(4)	(4)	Class A Common Stock	1,125	$0	2,250	D

Explanation of Responses:

1. In connection with the vesting on November 20, 2025, of Restricted Stock Units ("RSUs") previously granted to the Reporting Person, the Reporting Person's receipt of 1,125 shares of Class A Common Stock was deferred, resulting in the Reporting Person's receipt instead of 1,125 shares of phantom stock pursuant to the Issuer's deferred compensation plan. The Reporting Person is therefore reporting the disposition of 1,125 shares of Class A Common Stock in exchange for an equal number of shares of phantom stock.

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.

3. Each share of phantom stock represents a right to receive one share of Class A common stock.

4. The phantom stock becomes payable in one lump sum payment upon separation from service.

Remarks:

	/s/ Adele Freedman Attorney-in-Fact for Gina Mastantuonto	11/24/2025
	** 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 the Roblox (RBLX) director report in this Form 4?

The director Gina Mastantuonto reported that 1,125 vested RSUs that would have delivered Class A common shares on 11/20/2025 were instead converted into 1,125 shares of phantom stock under Roblox’s deferred compensation plan.

How many Roblox (RBLX) shares were involved in the reported transaction?

The transaction involved 1,125 shares of Class A common stock, reported as disposed of, and an equal 1,125 shares of phantom stock received in exchange.

What are the director’s Roblox (RBLX) holdings after this Form 4 transaction?

Following the transaction, Gina Mastantuonto beneficially owned 16,623 shares of Roblox Class A common stock and 2,250 shares of phantom stock, all held directly.

What is phantom stock in the context of Roblox (RBLX)?

Each share of phantom stock represents a right to receive one share of Roblox Class A common stock. The phantom stock becomes payable in one lump sum payment upon separation from service.

How do Roblox (RBLX) RSUs work for this director?

The filing states that some of the director’s holdings are Restricted Stock Units (RSUs), and each RSU represents a contingent right to receive one share of Roblox Class A common stock when it vests.

Was this Roblox (RBLX) Form 4 filed for one reporting person or a group?

The Form 4 was filed by one reporting person, reflecting transactions for director Gina Mastantuonto only.