Director 10b5-1 sale: Roblox (NYSE: RBLX) sells 8,333 shares

Rhea-AI Filing Summary

Roblox Corporation insiders reported sales of 8,333 shares on 02/27/2026 under Rule 10b5-1 plans. The filing shows 10b5-1 sales by Greg Baszucki and by Greg and Christina Baszucki LIV TR, each listing 8,333 shares with proceeds of $574,817.01.

The securities are listed as Common (Founders Shares dated 09/21/2016) and the transactions reference the NYSE listing.

Key Figures

Shares sold (per entry): 8,333 shares Proceeds (per entry): $574,817.01 Security class: Common (Founders Shares)

3 metrics

Shares sold (per entry) 8,333 shares sales dated 02/27/2026 under 10b5-1 plans

Proceeds (per entry) $574,817.01 proceeds reported for the 8,333-share sale on 02/27/2026

Security class Common (Founders Shares) Founders Shares dated 09/21/2016

Key Terms

Form 144, 10b5-1, Founders Shares

3 terms

Form 144 regulatory

"10b5-1 Sales for GREG BASZUCKI ... 02/27/2026"

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 regulatory

"10b5-1 Sales for GREG BASZUCKI ... 02/27/2026"

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.

Founders Shares market

"Common | 09/21/2016 | Founders Shares"

Founders shares are a special block of a company’s stock originally given to the people who started the business; they often carry extra voting power or favorable terms compared with regular shares. For investors, these shares matter because they concentrate control and influence how future funding, ownership dilution, and decision-making will play out—think of founders shares as the steering wheel that can steer a company’s direction even as more passengers (investors) climb aboard.

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	471314.48	661635583	04/01/2026	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	09/21/2016	Founders Shares	Issuer			8333	09/21/2016	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 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

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 did the RBLX Form 144 disclose about insider sales?

The Form 144 discloses sales of 8,333 shares on 02/27/2026 by insiders via Rule 10b5-1 plans. The filing lists proceeds of $574,817.01 for each reported sale, and identifies the shares as Common Founders Shares dated 09/21/2016.

Who executed the 10b5-1 sales reported for RBLX?

The filing names Greg Baszucki and Greg and Christina Baszucki LIV TR as the reporting sellers. Both entries reference 10b5-1 sales and show 8,333 shares sold on 02/27/2026 with stated proceeds of $574,817.01.

What class of securities was sold in the RBLX Form 144?

The disclosed instruments are Common stock, identified as Founders Shares with an original date of 09/21/2016. The filing lists these common shares and associates the transactions with the NYSE listing.

Does the Form 144 indicate these were pre-arranged sales for RBLX insiders?

Yes. The filing explicitly labels the transactions as 10b5-1 sales, indicating they were executed under pre-existing trading plans. The entries show the sales date 02/27/2026, quantity 8,333 shares, and proceeds $574,817.01.