MGNI Form 144: Insider sales include 8,000 shares

MGNI submitted a Form 144 notice reporting proposed and recent sales of Common Stock by Adam L. Soroca through Morgan Stanley Smith Barney LLC.

Rhea-AI Filing Summary

MGNI submitted a Form 144 notice reporting proposed and recent sales of Common Stock by Adam L. Soroca through Morgan Stanley Smith Barney LLC. The filing lists securities vested under a Restricted Stock Vesting Under a Registered Plan dated 05/15/2022.

The excerpt includes a proposed sale on 07/01/2026 of 8,000 shares for $160,000.00 and multiple transactions in May–June 2026 (examples: 05/27/2026 18,225 shares for $250,477.11; 05/28/2026 42,756 shares for $603,084.95). The filing identifies the broker-dealer as Morgan Stanley Smith Barney LLC Executive Financial Services.

Insights

Securities Compliance Counsel

Form 144 lists proposed and completed sales by an affiliate via a broker-dealer.

The filing shows transactions sourced from Restricted Stock Vesting Under a Registered Plan dated 05/15/2022. Multiple sale dates and dollar amounts are listed, and the broker-dealer is explicitly named.

Regulatory impact is procedural: Form 144 is a notice of proposed sales under resale rules. Subsequent transaction settlement and any Rule 144 eligibility depend on holding periods and transfer agent processing; timing and settlement details are not shown in the excerpt.

Key Figures

Proposed sale 07/01/2026: 8,000 shares Proceeds 07/01/2026: $160,000.00 Sale 05/28/2026: 42,756 shares +4 more

7 metrics

Proposed sale 07/01/2026 8,000 shares 07/01/2026 entry on Form 144

Proceeds 07/01/2026 $160,000.00 Dollar amount paired with 07/01/2026 8,000-share entry

Sale 05/28/2026 42,756 shares 05/28/2026 transaction listed

Proceeds 05/28/2026 $603,084.95 Dollar amount paired with 05/28/2026 entry

Sale 05/27/2026 18,225 shares 05/27/2026 transaction listed

Proceeds 05/27/2026 $250,477.11 Dollar amount paired with 05/27/2026 entry

Plan vesting date 05/15/2022 Restricted Stock Vesting Under a Registered Plan

Key Terms

Restricted Stock Vesting Under a Registered Plan, Form 144, Broker‑dealer

3 terms

Restricted Stock Vesting Under a Registered Plan financial

"Restricted Stock Vesting Under a Registered Plan dated 05/15/2022"

Form 144 regulatory

"The excerpt lists proposed and recent sales on Form 144"

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.

Broker‑dealer 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 does MGNI's Form 144 disclose about the seller?

It identifies Adam L. Soroca as the selling person and lists his address and multiple sale dates. The form shows proposed and executed sales with share counts and dollar amounts for transactions in May–July 2026.

How many shares are listed in the 07/01/2026 entry on MGNI's Form 144?

The filing lists a 07/01/2026 entry for 8,000 shares with a dollar amount of $160,000.00. This appears as a proposed sale recorded on the Form 144 excerpt.

What source or plan produced the shares sold in the MGNI filing?

The shares are described as resulting from a Restricted Stock Vesting Under a Registered Plan dated 05/15/2022, with the issuer listed in the securities section of the excerpt.

Which broker-dealer is handling the sales in the MGNI Form 144?

The filing names Morgan Stanley Smith Barney LLC Executive Financial Services (1 New York Plaza) as the broker-dealer for the transactions recorded in the excerpt.

Do the Form 144 entries show completed transactions or proposed sales?

The excerpt lists both proposed and executed-sale entries: some rows show specific sale dates and dollar proceeds, including multiple transactions in May–June 2026, while one row is a proposed sale dated 07/01/2026.

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

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Accepted by SEC EDGAR 07/07/2026 - 04:14 PM 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	0001725125
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	ADAM L SOROCA
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	Former 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	8000	168000.00	143215003	07/07/2026	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	05/15/2022	Restricted Stock Vesting Under a Registered Plan	Issuer			8000	05/15/2022	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

Name and Address of Seller	Title of Securities Sold	Date of Sale	Amount of Securities Sold	Gross Proceeds
ADAM L SOROCA 1250 Broadway, 9th Floor New York, NY 10001	Common	07/01/2026	8000	160000.00
ADAM L SOROCA 1250 Broadway, 9th Floor New York, NY 10001	Common	06/17/2026	8000	152000.00
ADAM L SOROCA 1250 Broadway, 9th Floor New York, NY 10001	Common	06/16/2026	6000	108000.00
ADAM L SOROCA 1250 Broadway, 9th Floor New York, NY 10001	Common	06/15/2026	6000	102000.00
ADAM L SOROCA 1250 Broadway, 9th Floor New York, NY 10001	Common	06/11/2026	6500	104195.00
ADAM L SOROCA 1250 Broadway, 9th Floor New York, NY 10001	Common	06/09/2026	6900	105225.00
ADAM L SOROCA 1250 Broadway, 9th Floor New York, NY 10001	Common	06/03/2026	7100	100975.49
ADAM L SOROCA 1250 Broadway, 9th Floor New York, NY 10001	Common	06/01/2026	27606	418014.69
ADAM L SOROCA 1250 Broadway, 9th Floor New York, NY 10001	Common	05/28/2026	42756	603084.95
ADAM L SOROCA 1250 Broadway, 9th Floor New York, NY 10001	Common	05/27/2026	18225	250477.11
ADAM L SOROCA 1250 Broadway, 9th Floor New York, NY 10001	Common	05/18/2026	18451	247975.90

144: Remarks and Signature

Remarks
Date of Notice	07/07/2026
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/ Adam Lee Soroca, Trustee
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)