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  4. [Form 4] Magnite, Inc. Insider Trading Activity

[Form 4] Magnite, Inc. Insider Trading Activity

Filing Impact
(Moderate)
Filing Sentiment
(Negative)
Form Type
4
Rhea-AI Filing Summary

Magnite, Inc. (MGNI) insider sale disclosed on Form 4. The reporting person, Katie Seitz Evans (President, Operations), sold 8,345 shares of common stock on 08/25/2025 at $26 per share under a Rule 10b5-1 trading plan that was adopted on March 6, 2025. After the sale she beneficially owned 415,598 shares, reported as direct ownership. The Form 4 was signed by attorney-in-fact Aaron Saltz on 08/26/2025. The filing documents a planned disposition under an established trading plan rather than an ad hoc transaction.

Vendita di insider di Magnite, Inc. (MGNI) riportata nel Modulo 4. La persona che ha segnalato, Katie Seitz Evans (President, Operations), ha venduto 8.345 azioni ordinarie il 25/08/2025 a 26 USD per azione nell'ambito di un piano di negoziazione ai sensi della Regola 10b5-1 adottato il 6 marzo 2025. Dopo la vendita deteneva indirettamente 415.598 azioni, dichiarate come propriet脿 diretta. Il Modulo 4 猫 stato firmato per procura dall'avvocato Aaron Saltz il 26/08/2025. La segnalazione documenta una disposizione programmata prevista da un piano di negoziazione stabilito, non una transazione occasionale.

Venta de insider de Magnite, Inc. (MGNI) divulgada en el Formulario 4. La persona informante, Katie Seitz Evans (President, Operations), vendi贸 8.345 acciones comunes el 25/08/2025 a 26 USD por acci贸n bajo un plan de negociaci贸n conforme a la Regla 10b5-1 adoptado el 6 de marzo de 2025. Tras la venta pose铆a de forma beneficiosa 415.598 acciones, reportadas como propiedad directa. El Formulario 4 fue firmado por apoderado, el abogado Aaron Saltz, el 26/08/2025. El registro documenta una disposici贸n planificada bajo un plan de negociaci贸n establecido, no una operaci贸n ad hoc.

Magnite, Inc.(MGNI) 雮措秬鞛� 毵り皝鞚� Form 4鞐� 瓿奠嫓霅橃棃鞀惦媹雼�. 氤搓碃鞚胳澑 Katie Seitz Evans(President, Operations)電� 2025-08-25鞐� 氤错喌欤� 8,345欤茧ゼ 欤茧嫻 26雼煬鞐� 毵る弰頄堨溂氅�, 鞚措姅 2025-03-06鞐� 毂勴儩霅� Rule 10b5-1 瓯半灅瓿勴殟鞐� 霐半ジ 瓴冹瀰雼堧嫟. 毵る弰 頉� 攴鸽厐電� 鞁れ鞝侅溂搿� 415,598欤茧ゼ 氤挫湢頃橁碃 鞛堨棃鞙茧┌ 鞚措姅 歆侅爲 靻岇湢搿� 氤搓碃霅橃棃鞀惦媹雼�. Form 4電� 2025-08-26鞐� 雽�毽劀氇呾澑 氤�順胳偓 Aaron Saltz鞐� 鞚橅暣 靹滊獏霅橃棃鞀惦媹雼�. 頃措嫻 鞝滌稖靹滊姅 鞚检嫓鞝� 瓯半灅臧� 鞎勲媹霛� 頇曤霅� 瓯半灅瓿勴殟鞐� 霐半ジ 鞓堨爼霅� 觳橂秳鞚� 氍胳劀頇旐暅 瓴冹瀰雼堧嫟.

Vente d'initi茅 de Magnite, Inc. (MGNI) divulgu茅e dans le Formulaire 4. La personne d茅clarante, Katie Seitz Evans (President, Operations), a vendu 8 345 actions ordinaires le 25/08/2025 au prix de 26 USD par action dans le cadre d'un plan de n茅gociation conforme 脿 la r猫gle 10b5-1 adopt茅 le 6 mars 2025. Apr猫s la vente, elle d茅tenait de mani猫re b茅n茅ficiaire 415 598 actions, d茅clar茅es comme propri茅t茅 directe. Le Formulaire 4 a 茅t茅 sign茅 par procuration par l'avocat Aaron Saltz le 26/08/2025. Le d茅p么t documente une cession planifi茅e dans le cadre d'un plan de n茅gociation 茅tabli, et non une transaction ponctuelle.

Insider-Verkauf von Magnite, Inc. (MGNI) im Formular 4 offengelegt. Die meldende Person, Katie Seitz Evans (President, Operations), verkaufte am 25.08.2025 8.345 Stammaktien zu 26 USD pro Aktie im Rahmen eines nach Rule 10b5-1 eingerichteten Handelsplans, der am 6. M盲rz 2025 beschlossen wurde. Nach dem Verkauf besa脽 sie wirtschaftlich 415.598 Aktien, angegeben als direkte Eigent眉merschaft. Das Formular 4 wurde am 26.08.2025 vom Bevollm盲chtigten und Anwalt Aaron Saltz unterschrieben. Die Meldung dokumentiert eine geplante Ver盲u脽erung unter einem etablierten Handelsplan und keine Ad-hoc-Transaktion.

Positive
  • Transaction disclosed under a Rule 10b5-1 trading plan, indicating pre-specified trading intent (plan adopted March 6, 2025).
  • Timely Form 4 filing signed by attorney-in-fact on 08/26/2025, one day after the transaction.
Negative
  • Insider sale of 8,345 shares on 08/25/2025 which reduces direct holdings to 415,598 shares.
  • No additional company financial context in this filing to assess broader impact on company fundamentals.

Insights

TL;DR: Insider sold shares via a 10b5-1 plan; transaction appears routine and disclosed promptly.

The reporting shows a discrete sale of 8,345 shares at $26 under a Rule 10b5-1 plan adopted March 6, 2025. The seller retains substantial direct holdings (415,598 shares) after the transaction. For investors, the key takeaway is transparency: the sale was executed pursuant to an established trading plan and the Form 4 was filed the following day by an attorney-in-fact. There is no additional company-level financial information in this filing to indicate broader operational impact.

TL;DR: Governance practice observed: planned insider sale disclosed; no red flags in the filing itself.

The Form 4 clearly identifies the reporting persons role (President, Operations), the 10b5-1 plan adoption date, sale quantity, price and remaining beneficial ownership. The presence of a 10b5-1 plan and a prompt filing reduce concerns about opportunistic trading. The document does not report any amendments or other governance events. Based solely on this filing, the disclosure meets Section 16 transparency expectations.

Vendita di insider di Magnite, Inc. (MGNI) riportata nel Modulo 4. La persona che ha segnalato, Katie Seitz Evans (President, Operations), ha venduto 8.345 azioni ordinarie il 25/08/2025 a 26 USD per azione nell'ambito di un piano di negoziazione ai sensi della Regola 10b5-1 adottato il 6 marzo 2025. Dopo la vendita deteneva indirettamente 415.598 azioni, dichiarate come propriet脿 diretta. Il Modulo 4 猫 stato firmato per procura dall'avvocato Aaron Saltz il 26/08/2025. La segnalazione documenta una disposizione programmata prevista da un piano di negoziazione stabilito, non una transazione occasionale.

Venta de insider de Magnite, Inc. (MGNI) divulgada en el Formulario 4. La persona informante, Katie Seitz Evans (President, Operations), vendi贸 8.345 acciones comunes el 25/08/2025 a 26 USD por acci贸n bajo un plan de negociaci贸n conforme a la Regla 10b5-1 adoptado el 6 de marzo de 2025. Tras la venta pose铆a de forma beneficiosa 415.598 acciones, reportadas como propiedad directa. El Formulario 4 fue firmado por apoderado, el abogado Aaron Saltz, el 26/08/2025. El registro documenta una disposici贸n planificada bajo un plan de negociaci贸n establecido, no una operaci贸n ad hoc.

Magnite, Inc.(MGNI) 雮措秬鞛� 毵り皝鞚� Form 4鞐� 瓿奠嫓霅橃棃鞀惦媹雼�. 氤搓碃鞚胳澑 Katie Seitz Evans(President, Operations)電� 2025-08-25鞐� 氤错喌欤� 8,345欤茧ゼ 欤茧嫻 26雼煬鞐� 毵る弰頄堨溂氅�, 鞚措姅 2025-03-06鞐� 毂勴儩霅� Rule 10b5-1 瓯半灅瓿勴殟鞐� 霐半ジ 瓴冹瀰雼堧嫟. 毵る弰 頉� 攴鸽厐電� 鞁れ鞝侅溂搿� 415,598欤茧ゼ 氤挫湢頃橁碃 鞛堨棃鞙茧┌ 鞚措姅 歆侅爲 靻岇湢搿� 氤搓碃霅橃棃鞀惦媹雼�. Form 4電� 2025-08-26鞐� 雽�毽劀氇呾澑 氤�順胳偓 Aaron Saltz鞐� 鞚橅暣 靹滊獏霅橃棃鞀惦媹雼�. 頃措嫻 鞝滌稖靹滊姅 鞚检嫓鞝� 瓯半灅臧� 鞎勲媹霛� 頇曤霅� 瓯半灅瓿勴殟鞐� 霐半ジ 鞓堨爼霅� 觳橂秳鞚� 氍胳劀頇旐暅 瓴冹瀰雼堧嫟.

Vente d'initi茅 de Magnite, Inc. (MGNI) divulgu茅e dans le Formulaire 4. La personne d茅clarante, Katie Seitz Evans (President, Operations), a vendu 8 345 actions ordinaires le 25/08/2025 au prix de 26 USD par action dans le cadre d'un plan de n茅gociation conforme 脿 la r猫gle 10b5-1 adopt茅 le 6 mars 2025. Apr猫s la vente, elle d茅tenait de mani猫re b茅n茅ficiaire 415 598 actions, d茅clar茅es comme propri茅t茅 directe. Le Formulaire 4 a 茅t茅 sign茅 par procuration par l'avocat Aaron Saltz le 26/08/2025. Le d茅p么t documente une cession planifi茅e dans le cadre d'un plan de n茅gociation 茅tabli, et non une transaction ponctuelle.

Insider-Verkauf von Magnite, Inc. (MGNI) im Formular 4 offengelegt. Die meldende Person, Katie Seitz Evans (President, Operations), verkaufte am 25.08.2025 8.345 Stammaktien zu 26 USD pro Aktie im Rahmen eines nach Rule 10b5-1 eingerichteten Handelsplans, der am 6. M盲rz 2025 beschlossen wurde. Nach dem Verkauf besa脽 sie wirtschaftlich 415.598 Aktien, angegeben als direkte Eigent眉merschaft. Das Formular 4 wurde am 26.08.2025 vom Bevollm盲chtigten und Anwalt Aaron Saltz unterschrieben. Die Meldung dokumentiert eine geplante Ver盲u脽erung unter einem etablierten Handelsplan und keine Ad-hoc-Transaktion.

SEC Form 4
FORM 4 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940
OMB APPROVAL
OMB Number: 3235-0287
Estimated average burden
hours per response: 0.5
Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).
X
 Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.
1. Name and Address of Reporting Person*
Evans Katie Seitz
(Last) (First) (Middle)
C/O MAGNITE, INC.
1250 BROADWAY, 15TH FLOOR
(Street)
NEW YORK NY 10001
(City) (State) (Zip)
2. Issuer Name and Ticker or Trading Symbol
MAGNITE, INC. [ MGNI ] 		5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
Director 10% Owner
X Officer (give title below) Other (specify below)
President, Operations
3. Date of Earliest Transaction (Month/Day/Year)
08/25/2025
4. If Amendment, Date of Original Filed (Month/Day/Year)
 6. Individual or Joint/Group Filing (Check Applicable Line)
X Form filed by One Reporting Person
Form filed by More than One Reporting Person
Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3) 2. Transaction Date (Month/Day/Year) 2A. Deemed Execution Date, if any (Month/Day/Year) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V Amount (A) or (D) Price
Common Stock 08/25/2025 S(1) 8,345 D $26 415,598 D
Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned
(e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (Month/Day/Year) 3A. Deemed Execution Date, if any (Month/Day/Year) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 6. Date Exercisable and Expiration Date (Month/Day/Year) 7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4)
Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares
Explanation of Responses:
1. These shares were sold pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on March 6, 2025.
/s/ Aaron Saltz, attorney-in-fact 08/26/2025
** Signature of Reporting Person Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source:

FAQ

What transaction did Katie Seitz Evans report on Form 4 for MGNI?

She sold 8,345 shares of Magnite common stock on 08/25/2025 at $26 per share.

Was the sale executed under a 10b5-1 trading plan for MGNI insider filings?

Yes. The sale was made pursuant to a Rule 10b5-1 trading plan adopted on March 6, 2025.

How many MGNI shares does the reporting person own after the transaction?

415,598 shares of common stock reported as beneficially owned following the sale.

When was the Form 4 signed and by whom?

Signed by Aaron Saltz, attorney-in-fact, on 08/26/2025.

What is the reporting persons role at Magnite in this Form 4?

President, Operations is listed as the reporting persons title.
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Magnite Inc

NASDAQ:MGNI

MGNI Rankings

#1591 Ranked by Market Cap
N/A Ranked by Dividends

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[Form 4] Magnite, Inc. Insider Trading Activity

MGNI Stock Data

3.61B
140.33M
1.4%
105.35%
10.69%
Advertising Agencies
Services-computer Programming, Data Processing, Etc.
United States
NEW YORK