MGNI shareholder plans sale of 10,000 shares

A holder of MGNI common stock filed to sell 10,000 shares through Morgan Stanley Smith Barney LLC Executive Financial Services on NASDAQ.

Rhea-AI Filing Summary

A holder of MGNI common stock filed to sell 10,000 shares through Morgan Stanley Smith Barney LLC Executive Financial Services on NASDAQ. The planned sale, valued at approximately $241,572.00, is listed with an expected sale date of 08/10/2026.

The shares relate to restricted stock that vested under a registered plan for services rendered, including 6,564 shares vesting on 06/05/2025 and 3,436 shares vesting on 06/28/2021.

Key Figures

Shares planned for sale: 10,000 shares Aggregate value of shares: $241,572.00 Expected sale date: 08/10/2026 +2 more

5 metrics

Shares planned for sale 10,000 shares Common stock listed for sale through Morgan Stanley Smith Barney LLC Executive Financial Services

Aggregate value of shares $241,572.00 Reported value of 10,000 common shares to be sold

Expected sale date 08/10/2026 Planned execution date for the 10,000-share sale

Restricted stock vesting 2025 6,564 shares Restricted stock vesting under a registered plan on 06/05/2025 for services rendered

Restricted stock vesting 2021 3,436 shares Restricted stock vesting under a registered plan on 06/28/2021 for services rendered

Key Terms

Form 144, Restricted Stock Vesting Under a Registered Plan, Services Rendered, Executive Financial Services

4 terms

Form 144 regulatory

"Filer Information | | | 144: Filer Information"

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.

Restricted Stock Vesting Under a Registered Plan financial

"Common | 06/05/2025 | Restricted Stock Vesting Under a Registered Plan |"

Services Rendered financial

"3436 | 06/28/2021 | Services Rendered"

Executive Financial Services financial

"Morgan Stanley Smith Barney LLC Executive Financial Services 1 New York Plaza"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What stock sale is being planned for MGNI in this Form 144?

A shareholder of MGNI plans to sell 10,000 shares of common stock. The planned sale is routed through Morgan Stanley Smith Barney LLC Executive Financial Services and is to be executed on NASDAQ.

What is the approximate value of the MGNI shares to be sold?

The filing lists an aggregate value of about $241,572.00 for the 10,000 MGNI shares to be sold. This reflects the filer’s reported market value at the time of the Form 144 notice.

When is the MGNI stock sale expected to occur?

The Form 144 indicates an expected sale date of 08/10/2026 for the 10,000 MGNI shares. This is the date by which the filer anticipates effecting the planned sale transaction.

What is the origin of the MGNI shares being sold under this Form 144?

The shares come from restricted stock vesting under a registered plan for services rendered. Vesting events include 6,564 shares on 06/05/2025 and 3,436 shares on 06/28/2021.

Which broker is involved in the planned MGNI share sale?

The sale is to be executed through Morgan Stanley Smith Barney LLC Executive Financial Services. The broker’s listed office is at 1 New York Plaza, 8th Floor, New York, NY 10004.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 08/10/2026 - 04:21 PM EDT 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	0001579232
Filer CCC	XXXXXXXX
Is this a LIVE or TEST Filing?	LIVE TEST
Submission Contact Information
Name
Phone
E-Mail Address

144: Issuer Information

Name of Issuer	MAGNITE, INC.
SEC File Number	001-36384
Address of Issuer	1250 Broadway, 9th Floor New York, NEW YORK 10001
Phone	(212) 243-2769
Name of Person for Whose Account the Securities are To Be Sold	RACHEL LAM
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	Director

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	10000	241572.00	143424000	08/10/2026	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	06/05/2025	Restricted Stock Vesting Under a Registered Plan	Issuer			6564	06/05/2025	Services Rendered
Common	06/28/2021	Restricted Stock Vesting Under a Registered Plan	Issuer			3436	06/28/2021	Services Rendered

* 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	08/10/2026
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	/s/ Rachel Lam
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)