Roblox insider Mark Reinstra reports RSU tax sell-to-cover trades

Rhea-AI Filing Summary

Roblox Corp (RBLX) reported an insider transaction by its Chief Legal Officer and Corporate Secretary, Mark L. Reinstra. On 11/20/2025, he sold a total of 16,782 shares of Class A common stock in several market trades, at average prices ranging from about $92.74 to $97.49. The filing explains these sales were made to cover statutory tax withholding obligations arising from the vesting of restricted stock units.

After these transactions, Reinstra directly beneficially owns 370,532 shares of Class A common stock. He also has indirect beneficial ownership through several trusts, including 120,272 shares held by the San Domenico Trust dated August 12, 1999, and additional blocks of 33,538 and 16,653 shares in each of the 2022 and 2023 annuity trusts for himself and his spouse.

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^*

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)
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		S(1)		2,796	D	$93.36(2)	384,518(3)	D
Class A Common Stock	11/20/2025		S(1)		2,901	D	$94.3(4)	381,617(3)	D
Class A Common Stock	11/20/2025		S(1)		4,995	D	$95.3(5)	376,622(3)	D
Class A Common Stock	11/20/2025		S(1)		3,960	D	$96.21(6)	372,662(3)	D
Class A Common Stock	11/20/2025		S(1)		2,130	D	$97.07(7)	370,532(3)	D
Class A Common Stock								120,272(8)	I	See footnote(9)
Class A Common Stock								33,538(8)	I	See footnote(10)
Class A Common Stock								16,653	I	See Footnote(11)
Class A Common Stock								33,538(8)	I	See footnote(12)
Class A Common Stock								16,653	I	See Footnotes(13)

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. Represents the number of shares sold to cover the statutory tax withholding obligations in connection with the vesting of Restricted Stock Units ("RSUs"). This sale was to satisfy tax withholding obligations to be funded by a "sell to cover" transaction.

2. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $92.74 to $93.70, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

3. 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.

4. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $93.76 to $94.74, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

5. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $94.82 to $95.79, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

6. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $95.83 to $96.77, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

7. The price reported in column 4 is an average price. These shares were sold in multiple transactions at prices ranging from $96.87 to $97.49, inclusive. The Reporting Person undertakes to provide the Issuer, any security holder of the Issuer or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

8. The previously reported transfer on November 5, 2025 occurred on November 18, 2025.

9. 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.

10. 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.

11. 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.

12. 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.

13. 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/ Adele Freedman Attorney-in-Fact for Mark Reinstra	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 Roblox (RBLX) disclose in this Form 4 filing?

The filing reports that Mark L. Reinstra, Roblox’s Chief Legal Officer and Corporate Secretary, sold shares of Class A common stock on 11/20/2025 and provides updated details on his direct and indirect beneficial ownership.

How many Roblox (RBLX) shares did Mark Reinstra sell and why?

Reinstra sold a total of 16,782 shares of Roblox Class A common stock. The filing states the sales represent shares sold to cover statutory tax withholding obligations related to the vesting of restricted stock units.

At what prices were the Roblox (RBLX) insider shares sold?

The reported sales on 11/20/2025 occurred in multiple trades at average prices of $93.36, $94.30, $95.30, $96.21, and $97.07, with underlying transaction price ranges from $92.74 up to $97.49.

How many Roblox (RBLX) shares does Mark Reinstra own after the transactions?

Following the reported sales, Reinstra directly beneficially owns 370,532 shares of Roblox Class A common stock. He also has indirect beneficial ownership of additional shares held in various family and annuity trusts.

What indirect Roblox (RBLX) holdings are reported for Mark Reinstra and related trusts?

The filing notes 120,272 shares held by the San Domenico Trust dated August 12, 1999 and additional holdings of 33,538 and 16,653 shares in each of several 2022 and 2023 annuity trusts for Reinstra and his spouse, over which he or his spouse may be deemed to have beneficial ownership.

What are the restricted stock units (RSUs) mentioned in the Roblox (RBLX) Form 4?

The filing explains that a portion of Reinstra’s reported holdings consists of restricted stock units (RSUs), each representing a contingent right to receive one share of Roblox’s Class A common stock upon vesting.