Roblox holder plans $344K sale of 8,333 shares

Rhea-AI Filing Summary

Roblox Corp (RBLX) is the issuer in a Rule 144 notice filed for stockholder Greg Baszucki, indicating an intention to sell up to 8,333 shares of Roblox common stock through Morgan Stanley Smith Barney LLC Executive Financial Services, with an estimated aggregate value of $344,069.57, on or after 09/01/2026 on the NYSE. The shares to be sold were originally acquired on 01/29/2008 via a private acquisition from the issuer for cash. The notice also lists recent Rule 10b5-1 plan sales in the past three months: separate 8,333-share sales for Greg Baszucki and for the Greg and Christina Baszucki Living Trust on 07/01/2026 and 08/04/2026 with reported proceeds per transaction of $480,695.77 and $312,190.01, respectively.

Key Figures

Shares to be sold under Rule 144: 8,333 shares Estimated aggregate market value of shares to be sold: $344,069.57 Planned sale date: 09/01/2026 +5 more

8 metrics

Shares to be sold under Rule 144 8,333 shares Proposed sale of Roblox common stock by Greg Baszucki

Estimated aggregate market value of shares to be sold $344,069.57 Value of 8,333 Roblox common shares covered by the Form 144

Planned sale date 09/01/2026 Indicated date for sale of 8,333 Roblox common shares on NYSE

Acquisition date of shares to be sold 01/29/2008 Private acquisition from issuer for cash

10b5-1 sale proceeds (Greg Baszucki, 07/01/2026) $480,695.77 Sale of 8,333 Roblox common shares under 10b5-1 plan

10b5-1 sale proceeds (Greg Baszucki, 08/04/2026) $312,190.01 Sale of 8,333 Roblox common shares under 10b5-1 plan

10b5-1 sale proceeds (Greg and Christina Baszucki Living Trust, 07/01/2026) $480,695.77 Sale of 8,333 Roblox common shares by living trust under 10b5-1 plan

10b5-1 sale proceeds (Greg and Christina Baszucki Living Trust, 08/04/2026) $312,190.01 Sale of 8,333 Roblox common shares by living trust under 10b5-1 plan

Key Terms

Rule 144, 10b5-1, Private Acquisition from Issuer or an Affiliate, Form 144, +1 more

5 terms

Rule 144 regulatory

"See the definition of "person" in paragraph (a) of Rule 144."

Rule 144 is a U.S. securities regulation that sets conditions under which restricted or insider-held shares can be legally resold to the public, such as required holding periods, availability of public information, limits on how much can be sold at once, and certain filing requirements. For investors it matters because it determines when previously locked-up shares can enter the market — like a release valve that can increase supply, affect share price, and signal insider intent.

10b5-1 regulatory

"10b5-1 Sales for GREG BASZUCKI 3150 South Delaware Street"

A 10b5-1 plan is a pre-set schedule that lets company insiders buy or sell shares according to written instructions made when they do not possess material, nonpublic information. Think of it as a timed automatic payment for stock trades: it helps insiders avoid accusations of trading on secret information and gives outside investors a clearer signal about whether sales are routine or potentially informative about the company’s prospects.

Private Acquisition from Issuer or an Affiliate financial

"Common | 01/29/2008 | Private Acquisition from Issuer or an Affiliate"

Form 144 regulatory

"144: Filer Information"

Form 144 is a document that investors must file with the government when they plan to sell a large number of shares of a company's stock. It helps ensure transparency so everyone knows how many shares are being sold and when, which can impact the stock's price.

Living Trust financial

"10b5-1 Sales for GREG AND CHRISTINA BASZUCKI LIV TR"

FAQ

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

What does the Form 144 filing indicate for Roblox Corp (RBLX)?

The Form 144 indicates that stockholder Greg Baszucki has filed a notice of proposed sale of up to 8,333 shares of Roblox common stock under Rule 144, through Morgan Stanley Smith Barney LLC, with an estimated aggregate value of $344,069.57.

How many Roblox (RBLX) shares are covered by this Form 144 notice?

The notice covers up to 8,333 shares of Roblox common stock, with an estimated aggregate market value of $344,069.57, to be sold through Morgan Stanley Smith Barney LLC Executive Financial Services on or after 09/01/2026.

When and how were the Roblox (RBLX) shares originally acquired?

The 8,333 shares of Roblox common stock covered by the notice were acquired on 01/29/2008 through a Private Acquisition from Issuer or an Affiliate, with consideration described as cash paid to the issuer.

What recent 10b5-1 sales involving Roblox (RBLX) are disclosed?

The filing lists Rule 10b5-1 sales: for Greg Baszucki, 8,333 shares on 07/01/2026 for $480,695.77 and 8,333 shares on 08/04/2026 for $312,190.01; and the same share counts and amounts on those dates for the Greg and Christina Baszucki Living Trust.

Which broker is involved in the planned Roblox (RBLX) share sale?

The planned sale of up to 8,333 Roblox common shares is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services, located at 1 New York Plaza, New York, as stated in the Form 144 securities information section.

On which market is the Roblox (RBLX) stock sale under this Form 144 expected to occur?

The Form 144 indicates that the 8,333 Roblox common shares covered by the notice are to be sold on the NYSE, with an indicated sale date of 09/01/2026, subject to the conditions of Rule 144.

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

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Available on EDGAR 09/01/2026 - 04:48 PM EDT Accepted by SEC EDGAR 09/01/2026 - 04:47 PM EDT Learn about SEC filing dates

Form 144 Filer Information	UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Form 144 NOTICE OF PROPOSED SALE OF SECURITIES PURSUANT TO RULE 144 UNDER THE SECURITIES ACT OF 1933
FORM 144

144: Filer Information

Filer CIK	0001834990
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	Roblox Corporation
SEC File Number	001-39763
Address of Issuer	3150 South Delaware Street San Mateo CALIFORNIA 94403
Phone	8888582569
Name of Person for Whose Account the Securities are To Be Sold	Greg Baszucki
See the definition of "person" in paragraph (a) of Rule 144. Information is to be given not only as to the person for whose account the securities are to be sold but also as to all other persons included in that definition. In addition, information shall be given as to sales by all persons whose sales are required by paragraph (e) of Rule 144 to be aggregated with sales for the account of the person filing this notice.
Relationship to Issuer	Director

144: Securities Information

Title of the Class of Securities To Be Sold	Name and Address of the Broker	Number of Shares or Other Units To Be Sold	Aggregate Market Value	Number of Shares or Other Units Outstanding	Approximate Date of Sale	Name the Securities Exchange
Common	Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza 8th Floor New York NY 10004	8333	344069.57	669992988	09/01/2026	NYSE

Furnish the following information with respect to the acquisition of the securities to be sold and with respect to the payment of all or any part of the purchase price or other consideration therefor:

144: Securities To Be Sold

Title of the Class	Date you Acquired	Nature of Acquisition Transaction	Name of Person from Whom Acquired	Is this a Gift?	Date Donor Acquired	Amount of Securities Acquired	Date of Payment	Nature of Payment *
Common	01/29/2008	Private Acquisition from Issuer or an Affiliate	Issuer			8333	01/29/2008	Cash

* If the securities were purchased and full payment therefor was not made in cash at the time of purchase, explain in the table or in a note thereto the nature of the consideration given. If the consideration consisted of any note or other obligation, or if payment was made in installments describe the arrangement and state when the note or other obligation was discharged in full or the last installment paid.

Furnish the following information as to all securities of the issuer sold during the past 3 months by the person for whose account the securities are to be sold.

144: Securities Sold During The Past 3 Months

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
10b5-1 Sales for GREG BASZUCKI 3150 South Delaware Street San Mateo CA 94403	Common	08/04/2026	8333	312190.01
10b5-1 Sales for GREG AND CHRISTINA BASZUCKI LIV TR 3150 South Delaware Street San Mateo CA 94403	Common	08/04/2026	8333	312190.01
10b5-1 Sales for GREG BASZUCKI 3150 South Delaware Street San Mateo CA 94403	Common	07/01/2026	8333	480695.77
10b5-1 Sales for GREG AND CHRISTINA BASZUCKI LIV TR 3150 South Delaware Street San Mateo CA 94403	Common	07/01/2026	8333	480695.77

144: Remarks and Signature

Remarks
Date of Notice	09/01/2026
Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1	11/28/2025
ATTENTION:
The person for whose account the securities to which this notice relates are to be sold hereby represents by signing this notice that he does not know any material adverse information in regard to the current and prospective operations of the Issuer of the securities to be sold which has not been publicly disclosed. If such person has adopted a written trading plan or given trading instructions to satisfy Rule 10b5-1 under the Exchange Act, by signing the form and indicating the date that the plan was adopted or the instruction given, that person makes such representation as of the plan adoption or instruction date.
Signature	/s/ Greg Baszucki
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)