Magnite (MGNI) Form 144 Filed for 9,315 Restricted Shares

Rhea-AI Filing Summary

Form 144 notice for Magnite, Inc. (MGNI) shows a proposed sale of 9,315 restricted common shares acquired from the issuer on 08/15/2025. The filing lists Morgan Stanley Smith Barney as the broker and estimates the aggregate market value at $218,152.19. Magnite's outstanding shares are reported as 142,399,305, so the proposed sale represents a small fraction of the total equity. The filer also disclosed a recent sale on 08/18/2025 of 10,886 shares yielding $259,667.02. The notice includes the standard representation that the seller is unaware of undisclosed material adverse information.

Insights

Securities Analyst

TL;DR: Insider plans to sell a modest block of restricted shares shortly after acquisition; disclosed via Form 144 through Morgan Stanley Smith Barney.

The filing documents a proposed sale of 9,315 restricted shares acquired from the issuer on 08/15/2025, with an estimated market value of $218,152.19 and execution via Morgan Stanley Smith Barney. Given Magnite's reported 142,399,305 shares outstanding, the position is immaterial to overall capitalization. The filing also reports a separate sale of 10,886 shares on 08/18/2025 for $259,667.02. This is a routine disclosure under Rule 144 and indicates secondary-market liquidity for the insider's holdings rather than a company operational update.

Corporate Governance Expert

TL;DR: Compliance-focused disclosure of restricted-share sale; no governance red flags visible from this notice alone.

The notice states the shares were restricted stock issued by the company on 08/15/2025 and that sales will be executed through a registered broker. The filer affirms absence of undisclosed material adverse information. There is no indication of unusual timing, unusual volume relative to outstanding shares, or related-party complexities in the provided text. From a governance perspective, this filing fulfills Rule 144 reporting requirements.

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	9315	218152.19	142399305	08/19/2025	NASDAQ

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	08/15/2025	Restricted Stock	ISSUER			9315	08/15/2025	Not Applicable

* 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
SEAN P BUCKLEY 1250 Broadway, 15th Floor New York NY 10001	Common	08/18/2025	10886	259667.02

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)