Magnite insider files Form 144 for 11,391 RSU shares on NASDAQ

Rhea-AI Filing Summary

Magnite, Inc. (MGNI) Form 144 filed for proposed sale of 11,391 common shares by Kathryn Evans through Morgan Stanley Smith Barney, with an aggregate market value of $269,966.70 and an approximate sale date of 08/18/2025 on NASDAQ. The shares were acquired as restricted stock units and paid via equity compensation on 08/15/2025. The filing also discloses three prior sales by the same person in the past three months: 24,495 shares on 06/30/2025 for $571,164, 20,000 shares on 06/16/2025 for $370,000, and 35,000 shares on 06/05/2025 for $607,695.50, totaling 79,495 shares and $1,548,859.50 in gross proceeds. The filer certifies no undisclosed material adverse information and notes the sale arises from equity compensation.

Positive

• Transparent regulatory disclosure of planned insider sale including broker, date, and acquisition details
• Shares acquired via equity compensation, with acquisition and payment dates specified, clarifying the origin of the holdings

Negative

• Substantial recent insider selling: 79,495 shares sold in the past three months generating $1,548,859.50, which increases share supply from an insider
• Potential for perceived insider liquidity pressure due to multiple sales within a short period, which some investors may view negatively

Insights

Securities Analyst

TL;DR: Insider sale disclosed; amounts modest relative to public float but notable in recent months.

The filing shows a planned sale of 11,391 RSU-derived shares valued at $269,966.70 and cumulative insider sales of 79,495 shares generating $1,548,859.50 in the last three months. From a trading-flow perspective, these are routine disclosures required under Rule 144 and clarify that the shares were acquired via equity compensation. While the absolute amounts are not enormous relative to many public-company floats, the pattern of multiple sales within a three-month window is relevant for investors monitoring insider liquidity and potential supply into the market. The filing contains the broker, intended sale date, and acquisition basis, which supports transparency and compliance.

Corporate Governance Expert

TL;DR: Disclosure meets regulatory requirements; repeated insider sales warrant governance monitoring but not automatically adverse.

This Form 144 provides required representations and specifies that the securities were from restricted stock units paid as equity compensation. The signer affirms lack of undisclosed material adverse information, aligning with compliance norms. Repeated monetization of equity by an insider can reflect personal diversification rather than negative company signals; governance teams should note the cadence and confirm any 10b5-1 trading plans or company policies governing insider sales. No statements in the filing indicate material noncompliance or undisclosed operational issues.

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	11391	269966.70	142399305	08/18/2025	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	08/15/2025	Restricted Stock Unit- See Remarks	Issuer			11391	08/15/2025	Equity Compensation

* 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
Kathryn Evans c/o Magnite, Inc. 1250 Broadway, 15th Floor New York NY 10001	Common	06/30/2025	24495	571164
Kathryn Evans c/o Magnite, Inc. 1250 Broadway, 15th Floor New York NY 10001	Common	06/16/2025	20000	370000.00
Kathryn Evans c/o Magnite, Inc. 1250 Broadway, 15th Floor New York NY 10001	Common	06/05/2025	35000	607695.50

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 the MGNI Form 144 disclose?

The filing discloses a proposed sale of 11,391 common shares valued at $269,966.70 by Kathryn Evans, to be sold approximately on 08/18/2025 on NASDAQ.

How were the shares acquired according to the filing?

The shares were acquired as restricted stock units (RSUs) and paid as equity compensation with an acquisition and payment date of 08/15/2025.

Has Kathryn Evans sold other MGNI shares recently?

Yes. The filing lists three prior sales in the past three months totaling 79,495 shares with gross proceeds of $1,548,859.50.

Which broker is handling the proposed sale?

The sale is listed with Morgan Stanley Smith Barney LLC Executive Financial Services located at 1 New York Plaza, New York, NY.

Does the filing state there is undisclosed material information?

The signer represents by signature that they do not know any material adverse information