Magnite officer Katheryn Evans plans $758K share sale

Magnite's reported outstanding share count is 143,559,468, compared with 26,178 common shares listed for sale.

Available on EDGAR 11/09/2026 - 05:06 PM EST Accepted by SEC EDGAR 11/09/2026 - 05:06 PM EST Learn about SEC filing dates

Rhea-AI Filing Summary

Katheryn Evans, an officer of Magnite, Inc., reported a planned sale of 26,178 common shares, with an aggregate market value of $758,216.97 and an approximate sale date of November 9, 2026. She reported that the shares were acquired upon vesting of restricted stock from April 1, 2021, through May 15, 2024.

Evans also reported three earlier sales: 13,997 shares for $335,928.00 on September 11, 2026; 11,100 shares for $260,357.00 on September 9, 2026; and 32,285 shares for $762,870.57 on September 8, 2026.

Key Figures

Proposed sale: 26,178 shares Aggregate market value: $758,216.97 Shares sold: 13,997 shares +5 more

8 metrics

Proposed sale 26,178 shares Approximate sale date: November 9, 2026

Aggregate market value $758,216.97 For the 26,178 common shares listed for sale

Shares sold 13,997 shares September 11, 2026

Gross proceeds $335,928.00 Sale on September 11, 2026

Shares sold 11,100 shares September 9, 2026

Gross proceeds $260,357.00 Sale on September 9, 2026

Shares sold 32,285 shares September 8, 2026

Gross proceeds $762,870.57 Sale on September 8, 2026

Key Terms

restricted stock, vesting, Gross Proceeds

3 terms

restricted stock financial

"vesting of restricted stock"

Shares granted to an individual that carry limits on transfer or sale until certain conditions are met, such as staying with the company for a set time or hitting performance targets. Think of them as a locked gift that gradually opens; for investors they matter because they affect how many shares may enter the market later, signal management incentives and potential dilution, and reveal confidence in future company performance.

vesting financial

"acquired upon the vesting of restricted stock"

Vesting is the process by which you earn full ownership of something, like company stock or a retirement benefit, over time. It’s like earning the right to keep a gift piece by piece the longer you stay with a company, making sure employees stay committed before they receive all the benefits.

Gross Proceeds financial

"Amount of Securities Sold | Gross Proceeds"

The total amount of cash a company receives from a financing event or sale before any fees, expenses, taxes or deductions are taken out. Investors watch gross proceeds because it shows the raw scale of new capital being raised—think of it as the paycheck amount before withholdings—which helps assess how much funding is available for operations, growth, debt payoff or how much shareholder dilution might occur once costs are removed.

FAQ

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

How many MGNI shares did Katheryn Evans report for sale?

Katheryn Evans, an officer of Magnite, Inc., reported 26,178 common shares for sale, with an aggregate market value of $758,216.97 and an approximate sale date of November 9, 2026.

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

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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	0001700262
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	KATHERYN EVANS
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	Officer

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	26178	758216.97	143559468	11/09/2026	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	04/01/2021	Restricted Stock	Issuer			26178	04/01/2021	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
KATHERYN EVANS 1250 Broadway, 9th Floor New York, NY 10001	Common	09/11/2026	13997	335928.00
KATHERYN EVANS 1250 Broadway, 9th Floor New York, NY 10001	Common	09/09/2026	11100	260357.00
KATHERYN EVANS 1250 Broadway, 9th Floor New York, NY 10001	Common	09/08/2026	32285	762870.57

144: Remarks and Signature

Remarks	The securities to be sold were acquired upon the vesting of restricted stock during the period of 04/01/2021 through 05/15/2024
Date of Notice	11/09/2026
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/ Katheryn Evans
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)