Baszucki reports Rule 144 sales of 8,333 RBLX shares

Roblox-related insider sales reported under Rule 144.

Rhea-AI Filing Summary

Roblox-related insider sales reported under Rule 144. The excerpt lists multiple 10b5-1 dispositions by Greg Baszucki and the Greg and Christina Baszucki Living Trust, including sales on 04/01/2026 and 02/27/2026. Each listed trade shows 8,333 shares and associated proceeds in dollars.

The filings identify the broker as Morgan Stanley Smith Barney LLC and indicate the transactions were effected as planned under 10b5-1 arrangements.

Insights

Securities Compliance

Reported Rule 144 notices document planned insider dispositions via 10b5-1 plans.

The excerpt lists multiple sales by Greg Baszucki and a related trust, with each transaction showing 8,333 shares and dollar proceeds tied to the sale dates 04/01/2026 and 02/27/2026

These entries serve as statutory notices for restricted or control-person sales; cash-flow recipients and any withholding treatments are not detailed in the excerpt. Subsequent filings (Form 4 or 5) or broker confirmations would provide complete post-transaction holdings.

Key Figures

Shares per sale: 8,333 shares Proceeds (04/01/2026): $482,920.68 Proceeds (02/27/2026): $574,817.01 +1 more

4 metrics

Shares per sale 8,333 shares listed for each disposition on 04/01/2026 and 02/27/2026

Proceeds (04/01/2026) $482,920.68 proceeds shown for each 8,333-share sale on 04/01/2026

Proceeds (02/27/2026) $574,817.01 proceeds shown for each 8,333-share sale on 02/27/2026

Broker Morgan Stanley Smith Barney LLC listed as broker on trade notice with market NYSE

Key Terms

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

3 terms

10b5-1 regulatory

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

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.

Rule 144 regulatory

"144: Securities Sold During The Past 3 Months"

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.

Private Acquisition from Issuer or an Affiliate market

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

FAQ

What did the RBLX filing disclose about Greg Baszucki's trades?

The filing reports multiple 10b5-1 sales by Greg Baszucki and an associated trust. It lists trades on 04/01/2026 and 02/27/2026 showing 8,333 shares each and dollar proceeds for each sale.

Were the sales executed under a trading plan for RBLX insiders?

Yes. The excerpt identifies these as 10b5-1 sales, indicating pre-arranged trading plans. The notice format documents planned dispositions rather than discretionary open-market timing.

Which broker handled the reported transactions in the RBLX excerpt?

The broker listed is Morgan Stanley Smith Barney LLC located at 1 New York Plaza. The excerpt ties the broker entry to the listed sales and the NYSE as the market.

How much proceeds were reported for the 04/01/2026 sales?

For the transactions dated 04/01/2026, the excerpt shows proceeds of $482,920.68 for each listed 8,333-share sale by the individual and the trust.

What proceeds were shown for the 02/27/2026 sales?

For the transactions dated 02/27/2026, the excerpt shows proceeds of $574,817.01 associated with each listed 8,333-share sale by the individual and the trust.

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

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Accepted by SEC EDGAR 05/05/2026 - 04:29 PM 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	396400.81	671595792	05/05/2026	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	04/01/2026	8333	482920.68
10b5-1 Sales for GREG AND CHRISTINA BASZUCKI LIV TR 3150 South Delaware Street San Mateo CA 94403	Common	04/01/2026	8333	482920.68
10b5-1 Sales for GREG BASZUCKI 3150 South Delaware Street San Mateo CA 94403	Common	02/27/2026	8333	574817.01
10b5-1 Sales for GREG AND CHRISTINA BASZUCKI LIV TR 3150 South Delaware Street San Mateo CA 94403	Common	02/27/2026	8333	574817.01

144: Remarks and Signature

Remarks
Date of Notice	05/05/2026
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)