Adam Soroca files Rule 144 notice to sell 7,100 shares

Adam L. Soroca reported proposed sales of Common Stock.

Rhea-AI Filing Summary

Adam L. Soroca reported proposed sales of Common Stock. The notice lists 7,100 shares of Common stock associated with restricted stock vesting under a registered plan dated 01/15/2020. The excerpt also shows recent dispositions by Adam L. Soroca: 27,606 shares on 06/01/2026 for $418,014.69, 42,756 shares on 05/28/2026 for $603,084.95, 18,225 shares on 05/27/2026 for $250,477.11, and 18,451 shares on 05/18/2026 for $247,975.90.

Insights

Securities Compliance Analyst

Routine Rule 144 notice and recent brokered dispositions by the reporting person.

The filing lists 7,100 shares tied to restricted stock vesting under a registered plan dated 01/15/2020. Multiple sale transactions by Adam L. Soroca during May–June 2026 are recorded with explicit share counts and proceeds.

These entries are procedural notifications required under Rule 144; cash‑flow treatment and intended sale methods are not specified in the excerpt. Subsequent regulatory filings may show final sale execution details.

Key Figures

Proposed registered sale: 7,100 shares Sale on 06/01/2026: 27,606 shares Sale on 05/28/2026: 42,756 shares +2 more

5 metrics

Proposed registered sale 7,100 shares restricted stock vesting under a registered plan dated 01/15/2020

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

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

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

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

Key Terms

restricted stock vesting, Form 144, proceeds

3 terms

restricted stock vesting regulatory

"Restricted stock vesting under a registered plan dated 01/15/2020"

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.

Form 144 regulatory

"Securities Sold During The Past 3 Months / 144: Remarks and Signature"

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.

proceeds financial

"Each sale line lists a dollar amount of gross proceeds"

FAQ

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

What did the Form 144 filed for MGNI report?

The Form 144 reports a proposed sale of 7,100 shares of Common stock tied to restricted stock vesting dated 01/15/2020. It also lists recent dispositions by Adam L. Soroca in May–June 2026.

How many shares did Adam L. Soroca sell recently for MGNI?

The excerpt lists four recent dispositions: 27,606 on 06/01/2026, 42,756 on 05/28/2026, 18,225 on 05/27/2026, and 18,451 on 05/18/2026. Each row includes gross proceeds.

What proceeds were reported for the recent sales listed?

The excerpt shows proceeds: $418,014.69 (27,606 shares), $603,084.95 (42,756 shares), $250,477.11 (18,225 shares), and $247,975.90 (18,451 shares).

Are the 7,100 shares being sold part of a registered plan?

Yes. The filing describes the 7,100 shares as resulting from restricted stock vesting under a registered plan with an effective/vesting date of 01/15/2020.

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

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Accepted by SEC EDGAR 06/03/2026 - 04:16 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	7100	100975.49	143215003	06/03/2026	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	01/15/2020	Restricted stock vesting under a registered plan	Issuer			7100	01/15/2020	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	06/01/2026	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	06/03/2026
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
ATTENTION: Intentional misstatements or omission of facts constitute Federal Criminal Violations (See 18 U.S.C. 1001)