MGNI: Insider Adam Soroca reports multiple stock sales

Adam L. Soroca reported proposed and recent sales of common stock via a Form 144.

Rhea-AI Filing Summary

Adam L. Soroca reported proposed and recent sales of common stock via a Form 144. The filing lists multiple completed sales in May–June 2026, including specific transactions such as 06/16/2026 — 6,000 shares for $108,000.00 and other dated disposals. The document also lists restricted shares vested under a registered plan on 05/15/2022, 02/15/2023, and 05/15/2023.

Insights

Equity Compensation Analyst

Reported insider disposals are detailed by date and amount; many are large, time-stamped sales.

The filing enumerates multiple sales by Adam L. Soroca with per-transaction share counts and gross proceeds, for example 06/01/2026 — 27,606 shares for $418,014.69. It also lists vested restricted stock grants under a registered plan dated 05/15/2022, 02/15/2023, and 05/15/2023.

Cash-flow treatment and whether these sales were part of a pre-arranged plan are not stated in the excerpt; subsequent filings would be needed for that context.

Securities Compliance Specialist

Form 144 provides required disclosure for resale by affiliates; this excerpt lists concrete trade dates and gross proceeds.

The record shows individual sale entries (dates, share quantities, gross proceeds) such as 05/28/2026 — 42,756 shares for $603,084.95 and 05/27/2026 — 18,225 shares for $250,477.11. The filing names a broker-dealer and identifies the securities as Common.

Regulatory consequence: this is a routine resale notice and does not itself state the method of sale or whether transactions were pre-authorized.

Key Figures

Sale on 06/16/2026: 6,000 shares Sale on 06/01/2026: 27,606 shares Sale on 05/28/2026: 42,756 shares +4 more

7 metrics

Sale on 06/16/2026 6,000 shares <date>06/16/2026</date> — gross proceeds <money>$108,000.00</money>

Sale on 06/01/2026 27,606 shares <date>06/01/2026</date> — gross proceeds <money>$418,014.69</money>

Sale on 05/28/2026 42,756 shares <date>05/28/2026</date> — gross proceeds <money>$603,084.95</money>

Sale on 05/27/2026 18,225 shares <date>05/27/2026</date> — gross proceeds <money>$250,477.11</money>

Sale on 05/18/2026 18,451 shares <date>05/18/2026</date> — gross proceeds <money>$247,975.90</money>

Restricted stock vesting (05/15/2022) 1,267 shares Restricted Stock Vesting Under a Registered Plan on <date>05/15/2022</date>

Restricted stock vesting (05/15/2023) 4,774 shares Restricted Stock Vesting Under a Registered Plan on <date>05/15/2023</date>

Key Terms

Restricted Stock Vesting Under a Registered Plan, Form 144, Issuer

3 terms

Restricted Stock Vesting Under a Registered Plan financial

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

Form 144 regulatory

"CONTENT METADATA: form_type: "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.

Issuer regulatory

"Restricted Stock Vesting Under a Registered Plan | Issuer |"

FAQ

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

What does the MGNI Form 144 filed by Adam L. Soroca disclose?

It discloses proposed and recent sales of common stock by Adam L. Soroca, listing dated transactions and gross proceeds. Examples include 06/16/2026 — 6,000 shares for $108,000.00 and 05/28/2026 — 42,756 shares for $603,084.95.

Which sale entries are listed in the MGNI excerpt?

The excerpt lists multiple sales in May–June 2026, including 06/01/2026 — 27,606 shares for $418,014.69 and 05/27/2026 — 18,225 shares for $250,477.11. Each line shows date, share count, and gross proceeds.

Does the filing show how the shares were acquired for these sales (e.g., grants or vesting)?

Yes. The excerpt lists restricted stock vesting under a registered plan with dates 05/15/2022, 02/15/2023, and 05/15/2023, with corresponding share counts in the filing.

Who is the broker-dealer named in the MGNI Form 144 excerpt?

The filing names Morgan Stanley Smith Barney LLC at 1 New York Plaza, 8th Floor, New York, NY, as the broker-dealer listed in the securities information section of the excerpt.

Do the entries state whether sales were under a pre-arranged trading plan?

The excerpt does not state whether the sales were executed pursuant to a pre-arranged plan; the filing lists dates, share counts, and gross proceeds but does not provide statements about trading-plan authorization.

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

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Accepted by SEC EDGAR 06/17/2026 - 04:33 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	8000	152000.00	143215003	06/17/2026	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			1267	05/15/2022	Services Rendered
Common	05/15/2023	Restricted Stock Vesting Under a Registered Plan	Issuer			4774	05/15/2023	Services Rendered
Common	02/15/2023	Restricted Stock Vesting Under a Registered Plan	Issuer			1959	02/15/2023	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	06/16/2026	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	06/17/2026
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)