Roblox (NYSE: RBLX) founder David Baszucki details Rule 144 stock sale

Rhea-AI Filing Summary

David Baszucki has filed a Rule 144 notice to sell 20,834 shares of the issuer’s common stock through Morgan Stanley Smith Barney on or about January 7, 2026 on the NYSE. The planned sale has an aggregate market value of $1,579,842.22, compared with 654,855,044 shares outstanding.

The shares to be sold are common stock originally acquired on April 6, 2004 as founder shares from the issuer. Over the past three months, related Rule 10b5-1 sales have already occurred, including 46,062 common shares sold for $3,902,718.11 for The Baszucki Family Foundation and 20,834 shares sold for $1,765,212.74 for The Freedom Revocable Trust, along with multiple sales in the name of David Baszucki.

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

Relationship to Issuer

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	20834	1579842.22	654855044	01/07/2026	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	04/06/2004	Founders Shares	Issuer			20834	04/06/2004	N/A

* 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 THE BASZUCKI FAMILY FOUNDATION 3150 South Delaware Street San Mateo CA 94403	Common	12/18/2025	46062	3902718.11
10b5-1 Sales for THE FREEDOM REVOCABLE TRUST 3150 South Delaware Street San Mateo CA 94403	Common	12/18/2025	20834	1765212.74
DAVID BASZUCKI 3150 South Delaware Street San Mateo CA 94403	Common	12/18/2025	22688	1937555.20
DAVID BASZUCKI 3150 South Delaware Street San Mateo CA 94403	Common	11/20/2025	10584	1008013.01
DAVID BASZUCKI 3150 South Delaware Street San Mateo CA 94403	Common	11/12/2025	22688	2358871.36
10b5-1 Sales for THE BASZUCKI FAMILY FOUNDATION 3150 South Delaware Street San Mateo CA 94403	Common	11/11/2025	46062	4815081.96
10b5-1 Sales for THE FREEDOM REVOCABLE TRUST 3150 South Delaware Street San Mateo CA 94403	Common	11/11/2025	20834	2177878.02

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)

FAQ

What does the latest Form 144 filing mean for RBLX shareholders?

The notice states that 20,834 shares of common stock are proposed to be sold under Rule 144, with an aggregate market value of $1,579,842.22, and that 654,855,044 shares of the issuer’s common stock are outstanding.

Who is selling shares of RBLX stock in this Form 144 filing?

The filing relates to common shares for the account of David Baszucki, with prior recent sales also listed for The Baszucki Family Foundation and The Freedom Revocable Trust.

How many RBLX shares are planned to be sold and through which broker?

The notice covers a proposed sale of 20,834 common shares through Morgan Stanley Smith Barney LLC Executive Financial Services, to be sold on the NYSE around January 7, 2026.

When and how were the RBLX shares in this Form 144 originally acquired?

The common shares covered by the notice were acquired on April 6, 2004 as founders shares from the issuer, with 20,834 securities acquired on that date.

What recent RBLX stock sales are disclosed for the past three months?

The filing lists several sales, including 46,062 common shares sold on December 18, 2025 for $3,902,718.11 for The Baszucki Family Foundation and 20,834 shares sold the same day for $1,765,212.74 for The Freedom Revocable Trust, along with multiple sales in the name of David Baszucki.

Are the RBLX share sales connected to a Rule 10b5-1 trading plan?

The past three months’ activity table identifies certain transactions as “10b5-1 Sales” for The Baszucki Family Foundation and The Freedom Revocable Trust, indicating those particular sales were executed under Rule 10b5-1 trading instructions.