Roblox (RBLX) affiliate plans 8,333-share sale and details recent 10b5-1 trades

Rhea-AI Filing Summary

Roblox Corporation affiliate securities holders filed a notice to sell 8,333 shares of common stock through Morgan Stanley Smith Barney LLC Executive Financial Services, with a proposed sale date of August 4, 2026 on the NYSE. The shares were originally acquired on January 29, 2008 in a Private Acquisition from Issuer or an Affiliate for cash.

The notice also lists prior Rule 10b5-1 plan sales over the past three months for Greg Baszucki and the Greg and Christina Baszucki Living Trust, including separate 8,333-share transactions on July 1, 2026 for $480,695.77, on June 1, 2026 for $388,569.46, and on May 5, 2026 for $374,711.68 for each of those two accounts.

Key Figures

Planned shares to be sold: 8,333 shares Planned sale date: 08/04/2026 Original acquisition date: 01/29/2008 +3 more

6 metrics

Planned shares to be sold 8,333 shares Common stock planned sale through Morgan Stanley Smith Barney LLC Executive Financial Services

Planned sale date 08/04/2026 Proposed sale date for 8,333 shares of common stock on NYSE

Original acquisition date 01/29/2008 Shares acquired in a Private Acquisition from Issuer or an Affiliate for cash

Recent 10b5-1 sale proceeds $480,695.77 Proceeds for 8,333-share 10b5-1 sales on 07/01/2026 for each of two accounts

Prior 10b5-1 sale proceeds $388,569.46 Proceeds for 8,333-share 10b5-1 sales on 06/01/2026 for each of two accounts

Earlier 10b5-1 sale proceeds $374,711.68 Proceeds for 8,333-share 10b5-1 sales on 05/05/2026 for each of two accounts

Key Terms

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

5 terms

Form 144 regulatory

"144: Securities Information Common | Morgan Stanley Smith Barney LLC"

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.

10b5-1 Sales regulatory

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

10b5-1 sales are pre-arranged stock-trading plans that let company insiders automatically buy or sell shares according to a fixed schedule or formula, even if they later learn confidential information. Think of it as setting up an automatic thermostat for trades: it creates a clear, documented path that can protect insiders from insider-trading accusations and gives investors a signal about predictable insider activity—though it can also simply be a way for insiders to diversify or raise cash.

Private Acquisition from Issuer or an Affiliate financial

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

Issuer regulatory

"Private Acquisition from Issuer or an Affiliate | Issuer"

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

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

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Available on EDGAR 08/04/2026 - 04:35 PM Accepted by SEC EDGAR 08/04/2026 - 04:35 PM Learn about SEC filing dates

FAQ

What does the Form 144 filing for RBLX disclose about planned stock sales?

The filing discloses an intention to sell 8,333 shares of Roblox common stock on August 4, 2026. These shares will be sold through Morgan Stanley Smith Barney LLC Executive Financial Services and were originally acquired in a cash, private acquisition in 2008.

Who is associated with the Form 144 stock sale for RBLX?

The planned sale is associated with Greg Baszucki and the Greg and Christina Baszucki Living Trust. Their prior transactions are listed under Rule 10b5-1 sales, indicating pre-arranged trading plans for Roblox common stock during recent months.

How many Roblox (RBLX) shares are planned to be sold under this Form 144?

The notice covers a proposed sale of 8,333 shares of Roblox common stock. This share amount is routed through Morgan Stanley Smith Barney LLC Executive Financial Services and is separate from the previously executed 10b5-1 plan sales listed in the filing.

What prior 10b5-1 plan sales in RBLX stock are reported in this Form 144?

The filing lists 10b5-1 sales for Greg Baszucki and the Greg and Christina Baszucki Living Trust, including 8,333-share trades on July 1, June 1, and May 5, 2026, with proceeds such as $480,695.77 and $388,569.46 for each account.

When were the Roblox (RBLX) shares in this Form 144 originally acquired?

The shares covered by the planned 8,333-share sale were acquired on January 29, 2008. They were obtained for cash in a transaction described as a Private Acquisition from Issuer or an Affiliate, indicating a non-public purchase.

What prices were realized in recent RBLX 10b5-1 sales mentioned in the Form 144?

Recent 10b5-1 sales show proceeds of $480,695.77 on July 1, 2026, $388,569.46 on June 1, 2026, and $374,711.68 on May 5, 2026 for each of Greg Baszucki and the Greg and Christina Baszucki Living Trust, on 8,333-share trades.

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

144: Issuer Information

Name of Issuer

SEC File Number

Address of Issuer

Phone

Name of Person for Whose Account the Securities are To Be Sold

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

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	305571.11	669992988	08/04/2026	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	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
10b5-1 Sales for GREG BASZUCKI 3150 South Delaware Street San Mateo CA 94403	Common	06/01/2026	8333	388569.46
10b5-1 Sales for GREG AND CHRISTINA BASZUCKI LIV TR 3150 South Delaware Street San Mateo CA 94403	Common	06/01/2026	8333	388569.46
10b5-1 Sales for GREG BASZUCKI 3150 South Delaware Street San Mateo CA 94403	Common	05/05/2026	8333	374711.68
10b5-1 Sales for GREG AND CHRISTINA BASZUCKI LIV TR 3150 South Delaware Street San Mateo CA 94403	Common	05/05/2026	8333	374711.68

144: Remarks and Signature

Remarks

Date of Notice

Date of Plan Adoption or Giving of Instruction, If Relying on Rule 10b5-1

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

ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)