Greg Baszucki and trust execute 10b5-1 sales for RBLX (RBLX)

Rhea-AI Filing Summary

RBLX reported insider sales executed under pre-arranged 10b5-1 plans by holders associated with Greg Baszucki.

Examples include sales of 8,333 shares on 06/01/2026 for $388,569.46 by Greg Baszucki and the Greg and Christina Baszucki Living Trust, and sales of 8,333 shares on 05/05/2026 for $374,711.68.

Insights

Corporate Governance Analyst

Insider dispositions were executed through 10b5-1 plans, indicating pre-arranged transactions.

The filings list multiple Rule 144 sales tied to 10b5-1 plans, with identical share counts (8,333) on specific dates. These entries document transfers rather than discretionary open-market timing.

Cash‑flow treatment is shown as cash in the excerpt; subsequent filings may provide aggregate position changes or clarifying footnotes.

Key Figures

Shares sold per listed trade: 8,333 shares Proceeds (06/01/2026 example): $388,569.46 Proceeds (05/05/2026 example): $374,711.68

3 metrics

Shares sold per listed trade 8,333 shares each listed trade on 05/05/2026 and 06/01/2026

Proceeds (06/01/2026 example) $388,569.46 sale on <date>06/01/2026</date>

Proceeds (05/05/2026 example) $374,711.68 sale on <date>05/05/2026</date>

Key Terms

10b5-1, Rule 144, Living Trust

3 terms

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.

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.

Living Trust other

"GREG AND CHRISTINA BASZUCKI LIV TR 3150 South Delaware Street"

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Available on EDGAR 07/01/2026 - 05:03 PM Accepted by SEC EDGAR 07/01/2026 - 05:03 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
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	453148.54	671595792	07/01/2026	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	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)

FAQ

What transactions does the RBLX Form 144 show?

The Form 144 lists Rule 144 sales executed under 10b5-1 plans. Examples include 8,333 shares sold on 06/01/2026 for $388,569.46 and 8,333 shares sold on 05/05/2026 for $374,711.68.

Who is the reporting person on the RBLX Form 144?

The excerpt names transactions associated with Greg Baszucki and the Greg and Christina Baszucki Living Trust. Both entities appear as sellers under 10b5-1 plans in the provided entries.

Were the RBLX sales executed under a trading plan?

Yes. The sales are described as 10b5-1 Sales, indicating they were executed under pre-arranged trading plans rather than ad-hoc discretionary trades.

What cash amounts are disclosed for the example sales?

The excerpt shows proceeds of $388,569.46 for each 06/01/2026 sale and $374,711.68 for each 05/05/2026 sale tied to 8,333 shares in the listed rows.

Does the filing state who receives the proceeds?

The excerpt labels the transactions as Cash and indicates sales by the reporting holders. The filing does not specify any other recipient; further detail may appear in complete filing text or footnotes.