MGNI affiliate reports Form 144 insider sales

MGNI affiliate reported proposed and recent sales of Common Stock under Form 144.

Rhea-AI Filing Summary

MGNI affiliate reported proposed and recent sales of Common Stock under Form 144. The filing lists restricted stock vesting under a registered plan on 05/25/2026 (several grants) and multiple sales by Adam L. Soroca between 05/18/2026 and 06/09/2026. The transactions are reported as issuer‑related vesting and subsequent dispositions.

Key Figures

Sale on 06/09/2026: 6,900 shares Sale on 06/03/2026: 7,100 shares Sale on 06/01/2026: 27,606 shares +5 more

8 metrics

Sale on 06/09/2026 6,900 shares sold on <date>06/09/2026</date> for $105,225.00

Sale on 06/03/2026 7,100 shares sold on <date>06/03/2026</date> for $100,975.49

Sale on 06/01/2026 27,606 shares sold on <date>06/01/2026</date> for $418,014.69

Sale on 05/28/2026 42,756 shares sold on <date>05/28/2026</date> for $603,084.95

Sale on 05/27/2026 18,225 shares sold on <date>05/27/2026</date> for $250,477.11

Sale on 05/18/2026 18,451 shares sold on <date>05/18/2026</date> for $247,975.90

Vesting reported 3,813 shares Restricted stock vesting under a registered plan on <date>05/25/2026</date>

Vesting reported 2,643 shares Restricted stock vesting under a registered plan on <date>05/25/2026</date>

Key Terms

Form 144, Restricted Stock Vesting, Registered Plan

3 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 financial

"Common | 05/25/2026 | Restricted Stock Vesting Under a Registered Plan"

Restricted stock vesting is the timetable and conditions under which shares granted to employees or insiders become fully owned and can be sold, typically requiring continued work or meeting performance goals. It matters to investors because large blocks of shares can become tradable at once, which can change share supply and price, and because vesting aligns insiders’ incentives with the company’s long‑term performance—think of it like a timed unlock that both rewards and locks in key people.

Registered Plan regulatory

"Restricted Stock Vesting Under a Registered Plan | Issuer"

A registered plan is a savings or investment account that a government recognizes for special tax treatment and rules, such as limits on how much you can put in and conditions for withdrawals. For investors it matters because those rules change how much of your gains are taxed, how quickly your money can be accessed and what strategies make sense — like a labeled jar that gives tax breaks but comes with rules about when and how you can take the money out.

FAQ

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

What does MGNI Form 144 disclose about insider sales?

It discloses proposed and recent sales of Common Stock by an affiliate. The filing lists multiple dispositions by Adam L. Soroca from 05/18/2026 through 06/09/2026, with individual trade sizes and dollar amounts shown for each date.

How many shares did Adam L. Soroca sell per the filing?

The filing lists several individual sales totaling multiple transactions. Examples include sales of 18,451, 18,225, 42,756, 27,606, 7,100, and 6,900 shares on the dates shown in the excerpt.

Were any shares reported as vesting rather than sold in the MGNI excerpt?

Yes. The excerpt shows Restricted Stock Vesting under a registered plan on 05/25/2026, listing grants of 44, 3,813, and 2,643 shares attributed to services rendered and issued by the issuer.

Does the Form 144 excerpt state who received sale proceeds?

The excerpt does not state proceeds recipients beyond the seller names. The selling party named is Adam L. Soroca, and each transaction row shows a dollar amount received for that sale on the listed date.

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

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Accepted by SEC EDGAR 06/11/2026 - 04:19 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	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	6500	104195.00	143215003	06/11/2026	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	05/25/2026	Restricted Stock Vesting Under a Registered Plan	Issuer			44	05/25/2026	Services Rendered
Common	05/25/2026	Restricted Stock Vesting Under a Registered Plan	Issuer			3813	05/25/2026	Services Rendered
Common	05/25/2026	Restricted Stock Vesting Under a Registered Plan	Issuer			2643	05/25/2026	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	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	06/11/2026
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)