[144] MAGNITE, INC. SEC Filing

Rhea-AI Filing Summary

Form 144 notice for Magnite, Inc. (MGNI) reports a proposed sale of 8,522 common shares held by Aaron Saltz to be effected on 09/19/2025 through Morgan Stanley Smith Barney LLC on NASDAQ. The shares were acquired as restricted stock from the issuer on 02/15/2023. The filing lists the aggregate market value of the proposed sale as $208,789.00 and notes 142,399,305 shares outstanding for the class. The notice also discloses recent open-market sales by the same person during the past three months on multiple dates with individual gross proceeds shown. The filing includes the standard Rule 144 certification that the seller is not aware of any undisclosed material adverse information.

Insights

Securities Analyst

TL;DR: Routine Rule 144 insider sale of restricted shares; disclosure is compliant and provides recent sale history.

The filing documents a planned sale of 8,522 restricted common shares by an insider via a broker on NASDAQ, showing acquisition date and type (restricted stock) and listing outstanding shares and aggregate market value. The inclusion of multiple recent sales in the past three months increases transparency on the insider's liquidity actions. This is a standard disclosure under Rule 144 and does not by itself indicate company-level financial change.

Corporate Governance Expert

TL;DR: Insiders exercising liquidity through disclosed Rule 144 sales; governance process appears to be followed.

The notice confirms the seller represents no undisclosed material adverse information and records broker details and dates consistent with compliance practices. While repeated insider sales are visible, the filing supplies the required information for market participants to assess timing and scale relative to outstanding shares. No governance or compliance exceptions are evident in the document itself.

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	8522	208789.00	142399305	09/19/2025	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	02/15/2023	Restricted Stock	ISSUER			8522	02/15/2023	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
AARON SALTZ 1250 Broadway, 15th Floor New York NY 10001	Common	09/15/2025	6180	147949.20
AARON SALTZ 1250 Broadway, 15th Floor New York NY 10001	Common	08/29/2025	12403	323399.54
AARON SALTZ 1250 Broadway, 15th Floor New York NY 10001	Common	08/18/2025	5770	137633.54
AARON SALTZ 1250 Broadway, 15th Floor New York NY 10001	Common	08/14/2025	13860	323518.46
AARON SALTZ 1250 Broadway, 15th Floor New York NY 10001	Common	06/30/2025	17574	386628.00

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 does the Form 144 filed for MGNI disclose?

The Form 144 discloses a proposed sale of 8,522 common shares on 09/19/2025 through Morgan Stanley Smith Barney LLC with aggregate market value $208,789.00.

Who is the selling party named in the MGNI Form 144?

The seller identified in recent sale rows is Aaron Saltz at the address listed; the 8,522 shares in the proposed sale are held for the account of that person.

When and how were the securities to be sold acquired?

The securities were acquired on 02/15/2023 as restricted stock from the issuer, with the same date shown for payment.

How many shares outstanding does Form 144 report for MGNI common stock?

The filing reports 142,399,305 shares outstanding for the class.

Does the filing show recent sales by the same person?

Yes. The filing lists multiple sales by Aaron Saltz in the past three months with individual dates and gross proceeds, including sales on 09/15/2025, 08/29/2025, 08/18/2025, 08/14/2025, and 06/30/2025.