Magnite (MGNI) Rule 144 Filing — 20,000 Shares via Morgan Stanley

Rhea-AI Filing Summary

Magnite, Inc. (MGNI) insider intends to sell 20,000 shares on NASDAQ through Morgan Stanley Smith Barney LLC, representing an aggregate market value of $504,616. The shares to be sold are a small fraction of the company's reported outstanding shares of 142,399,305, so the transaction size is modest relative to the company.

The securities were originally acquired as restricted stock: 13,743 shares on 06/12/2024 and 6,257 shares on 06/07/2023, with payment dates matching acquisition dates. No other sales by the reporting person in the past three months are reported, and the filer certifies no undisclosed material adverse information.

Insights

Securities Analyst

TL;DR: Routine Rule 144 notice for a small insider sale; unlikely to be material to MGNI shareholders.

The filing documents a proposed sale of 20,000 common shares via Morgan Stanley Smith Barney LLC with an aggregate market value of $504,616 and lists total outstanding shares of 142,399,305. The shares were received as restricted stock in two grants dated 06/07/2023 and 06/12/2024. There are no reported sales in the prior three months. From a market-impact perspective, the sale represents roughly 0.014% of outstanding shares, indicating limited dilution or trading pressure from this specific notice. The filing contains standard Rule 144 certifications and no additional disclosures.

Corporate Governance Specialist

TL;DR: Formal compliance disclosure of an insider sale under Rule 144; procedural and non-material in scale.

The notice fulfills Rule 144 reporting requirements for restricted stock dispositions, specifying acquisition dates and amounts for two grants and confirming no other recent disposals. The transaction will be executed through a recognized broker on NASDAQ. The document includes the statutory attestation regarding undisclosed material adverse information and highlights that the sale is being reported in accordance with regulatory obligations rather than signaling a company-level change or governance event.

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	20000	504616.00	142399305	08/26/2025	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	06/12/2024	Restricted Stock	Issuer			13743	06/12/2024	Not Applicable
Common	06/07/2023	Restricted Stock	Issuer			6257	06/07/2023	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 does the Form 144 filed for MGNI disclose about the proposed sale?

The filing discloses a proposed sale of 20,000 common shares on NASDAQ through Morgan Stanley Smith Barney LLC with an aggregate market value of $504,616.

How many outstanding shares does Magnite report in the Form 144?

The filing lists 142,399,305 shares outstanding.

When were the shares being sold originally acquired according to the filing?

The shares were acquired as restricted stock: 13,743 shares on 06/12/2024 and 6,257 shares on 06/07/2023.

Does the filing report other sales by the same person in the past three months?

No. The section for securities sold during the past three months reports Nothing to Report.

Through which broker will the MGNI shares be sold?

The designated broker is Morgan Stanley Smith Barney LLC, 1 New York Plaza, 8th Floor, New York, NY 10004.