Insider Notice: MGNI Restricted Stock Sale via Morgan Stanley

Rhea-AI Filing Summary

Magnite, Inc. (MGNI) filed a Form 144 reporting a proposed sale of 15,000 common shares through Morgan Stanley Smith Barney LLC with an aggregate market value of $333,685.50. The notice specifies an approximate sale date of 08/12/2025 and lists 142,399,305 shares outstanding, showing the proposed sale is a small fraction of the company's total shares.

The filing also discloses that the shares were acquired from the issuer as restricted stock on 06/28/2021. No securities were reported sold by the filer in the past three months. The notice includes the standard representation that the seller does not possess undisclosed material adverse information and references the Rule 144 sale process.

Positive

• Proposed sale disclosed: 15,000 common shares identified with aggregate market value of $333,685.50
• Broker identified: Morgan Stanley Smith Barney LLC is named as broker for the transaction
• Acquisition disclosed: Shares were acquired as restricted stock from the issuer on 06/28/2021
• No recent sales: The filer reports "Nothing to Report" for securities sold in the past three months

Negative

• None.

Insights

Financial Analyst

TL;DR: Proposed sale of 15,000 MGNI shares (~$333.7k) is disclosed; size is immaterial relative to outstanding shares, so market impact is likely limited.

The Form 144 shows a planned sale of 15,000 common shares via Morgan Stanley with an aggregate estimated value of $333,685.50. Given the issuer's reported 142,399,305 shares outstanding, the sale represents a very small percentage of the float. The securities were originally issued as restricted stock on 06/28/2021, indicating an internal grant rather than a market purchase. No sales were reported in the past three months, which limits immediate trend signals.

Corporate Governance Expert

TL;DR: Disclosure follows Rule 144 procedures; documentation of acquisition and broker use supports regulatory compliance but has limited governance implications.

The filing documents compliance with Rule 144 by identifying the broker (Morgan Stanley Smith Barney LLC), the acquisition method (restricted stock), and the absence of recent sales. The filer’s signed representation that there is no undisclosed material adverse information is standard language included in such notices. From a governance perspective, the filing is routine and does not, on its face, indicate material governance concerns.

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	15000	333685.50	142399305	08/12/2025	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	06/28/2021	Restricted Stock	Issuer			15000	06/28/2021	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

Nothing to Report

144: Remarks and Signature

Remarks

Date of Notice

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 Magnite (MGNI) report in this Form 144?

The company filed a Form 144 reporting a proposed sale of 15,000 common shares with an aggregate market value of $333,685.50.

When is the proposed sale scheduled for MGNI shares?

The filing lists an approximate date of sale of 08/12/2025.

Who will broker the sale of Magnite shares?

The broker named in the filing is Morgan Stanley Smith Barney LLC.

How were the shares being sold acquired?

The 15,000 shares were acquired as restricted stock from the issuer on 06/28/2021.

Has the filer sold any MGNI securities in the past three months?

No. The filing states "Nothing to Report" for securities sold during the past three months.

How many shares outstanding did Magnite report in the filing?

The filing lists 142,399,305 shares outstanding.