STOCK TITAN

Roblox director defers 1,296 shares into phantom stock

Roblox Corp (RBLX) director Gina Mastantuono reported a non-market restructuring of equity awards on August 20, 2026.

(Neutral)
(Neutral)
Form Type
4

Rhea-AI Filing Summary

Roblox Corp (RBLX) director Gina Mastantuono reported a non-market restructuring of equity awards on August 20, 2026. In connection with the vesting of previously granted Restricted Stock Units (RSUs), her receipt of 1,296 shares of Class A Common Stock was deferred and instead converted into 1,296 shares of phantom stock under Roblox’s deferred compensation plan.

This resulted in a reported disposition of 1,296 Class A shares in exchange for an equal number of phantom stock units, each representing a right to receive one share of Class A common stock, payable in a lump sum upon separation from service. Following the transaction, she directly held 18,261 shares of Class A Common Stock, a portion of which are RSUs.

Positive

  • None.

Negative

  • None.
Insider Mastantuono Gina
Role Director
Type Security Shares Price Value
Other Phantom Stock F3, F1, F4 1,296 $0.00 $0.00
Other Class A Common Stock F1, F2 1,296 $0.00 $0.00
Holdings After Transaction: Phantom Stock — 1,296 contracts (Direct); Class A Common Stock — 18,261 shares (Direct)
Footnotes (4)
  1. F1. In connection with the vesting on August 20, 2026, of Restricted Stock Units ("RSUs") previously granted to the Reporting Person, the Reporting Person's receipt of 1,296 shares of Class A Common Stock was deferred, resulting in the Reporting Person's receipt instead of 1,296 shares of phantom stock pursuant to the Issuer's deferred compensation plan. The Reporting Person is therefore reporting the disposition of 1,296 shares of Class A Common Stock in exchange for an equal number of shares of phantom stock.
  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.
  3. F3. Each share of phantom stock represents a right to receive one share of Class A common stock.
  4. F4. The phantom stock becomes payable in one lump sum payment upon separation from service.
Phantom stock acquired 1,296 shares Phantom stock received in lieu of vested RSU Class A shares on August 20, 2026
Class A Common Stock exchanged 1,296 shares Disposition of Class A Common Stock in exchange for phantom stock on August 20, 2026
Class A Common Stock held after transaction 18,261 shares Direct holdings of Gina Mastantuono following the August 20, 2026 restructuring
Restructuring shares total 2,592 shares Total shares involved in restructuring-type transactions (phantom and Class A) per transaction summary
Phantom Stock financial
"The Reporting Person's receipt instead of 1,296 shares of phantom stock"
A phantom stock is a form of compensation that gives employees or executives the benefits of stock ownership, such as the increase in stock value, without actually giving them real shares. It acts like a promise to pay the employee the equivalent value of company stock later, often as a bonus or incentive. This allows companies to motivate and reward staff without diluting ownership or transferring actual shares.
Restricted Stock Units ("RSUs") financial
"In connection with the vesting on August 20, 2026, of Restricted Stock Units"
Restricted stock units (RSUs) are a company promise to give an employee shares of stock (or cash equivalent) in the future, but only after certain conditions—usually staying with the company for a set time or hitting performance goals—are met. Investors watch RSUs because when they vest they increase the number of shares outstanding and can lead insiders to sell shares, affecting share price, company dilution and the true cost of employee pay.
deferred compensation plan financial
"phantom stock pursuant to the Issuer's deferred compensation plan"
A deferred compensation plan is an arrangement where an employer agrees to pay part of an employee’s pay or bonus at a later date instead of immediately, often to reduce current tax bills or to tie rewards to long-term performance. For investors it matters because these promises create future cash obligations and influence executive incentives and retention; they can affect a company’s reported liabilities, cash flow planning and the risk profile if the business faces financial trouble.
contingent right financial
"Each RSU represents a contingent right to receive one share"

FAQ

What insider transaction did RBLX director Gina Mastantuono report on August 20, 2026?

She reported a restructuring related to RSU vesting, where her receipt of 1,296 shares of Class A Common Stock was deferred and exchanged for 1,296 shares of phantom stock under Roblox’s deferred compensation plan, rather than a market purchase or sale.

How many Roblox (RBLX) Class A shares were exchanged for phantom stock?

Gina Mastantuono exchanged 1,296 shares of Class A Common Stock for 1,296 shares of phantom stock, as part of a deferral election tied to the vesting of previously granted RSUs.

How many Roblox (RBLX) Class A shares did Gina Mastantuono hold after this Form 4 transaction?

After the reported restructuring, Gina Mastantuono directly held 18,261 shares of Roblox Class A Common Stock, which the filing notes includes a portion held as Restricted Stock Units (RSUs).

What does the phantom stock reported for Roblox (RBLX) represent?

Each share of phantom stock represents a right to receive one share of Roblox Class A Common Stock. According to the filing, the phantom stock becomes payable in one lump sum payment upon separation from service.

Was Gina Mastantuono’s Roblox (RBLX) Form 4 transaction a market buy or sell?

No. The Form 4 describes an exchange where 1,296 vested RSU shares of Class A Common Stock were deferred into 1,296 phantom stock units under a deferred compensation plan, rather than a market purchase or sale.

How are RSUs described in this Roblox (RBLX) Form 4?

The filing states that a portion of the securities are Restricted Stock Units ("RSUs"), and that each RSU represents a contingent right to receive one share of Roblox’s Class A Common Stock.

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

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SEC Form 4
FORM 4UNITED 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).
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 CALIFORNIA 94403

(City)(State)(Zip)

UNITED STATES

(Country)
2. Issuer Name and Ticker or Trading Symbol
Roblox Corp [ RBLX ]
5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
XDirector10% Owner
Officer (give title below)Other (specify below)
2a. Foreign Trading Symbol
3. Date of Earliest Transaction (Month/Day/Year)
08/20/2026
6. Individual or Joint/Group Filing (Check Applicable Line)
XForm filed by One Reporting Person
Form filed by More than One Reporting Person
4. If Amendment, Date of Original Filed (Month/Day/Year)

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)
CodeVAmount(A) or (D)Price
Class A Common Stock08/20/2026J(1)1,296D$0(1)18,261(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)
CodeV(A)(D)Date ExercisableExpiration DateTitleAmount or Number of Shares
Phantom Stock(3)08/20/2026J(1)1,296 (4) (4)Class A Common Stock1,296$01,296D
Explanation of Responses:
1. In connection with the vesting on August 20, 2026, of Restricted Stock Units ("RSUs") previously granted to the Reporting Person, the Reporting Person's receipt of 1,296 shares of Class A Common Stock was deferred, resulting in the Reporting Person's receipt instead of 1,296 shares of phantom stock pursuant to the Issuer's deferred compensation plan. The Reporting Person is therefore reporting the disposition of 1,296 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/Mark Reinstra Attorney-in-Fact for Gina Mastantuono08/24/2026
** Signature of Reporting PersonDate
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.
* Form 4: SEC 1474 (03-26)