STOCK TITAN

[Form 4] Magnite, Inc. Insider Trading Activity

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

Magnite (NASDAQ:MGNI) filed a Form 4 disclosing that CFO David Day exercised 71,000 stock options at $5.28 and immediately sold the same number of common shares.

The trades, executed on 24 & 26 June 2025 under a pre-arranged Rule 10b5-1 plan, generated gross proceeds of roughly $1.45 million (35k @ $19.95, 36k @ $20.95). Following these transactions, Day’s direct ownership fell to 443,528 shares, a reduction of about 14% of his prior holdings.

The options stem from an April 2021 grant that vests monthly through April 2030. No additional derivatives were sold, and Day retains 44,784 unexercised options from the award. The sizeable sale may influence investor sentiment given the executive’s senior role.

Magnite (NASDAQ:MGNI) ha depositato un Modulo 4 che rivela che il CFO David Day ha esercitato 71.000 opzioni su azioni a $5,28 e ha immediatamente venduto lo stesso numero di azioni ordinarie.

Le operazioni, eseguite il 24 e 26 giugno 2025 nell'ambito di un piano predefinito Rule 10b5-1, hanno generato proventi lordi di circa 1,45 milioni di dollari (35k @ $19,95, 36k @ $20,95). Dopo queste transazioni, la proprietà diretta di Day è scesa a 443.528 azioni, una riduzione di circa il 14% rispetto alle sue partecipazioni precedenti.

Le opzioni derivano da una concessione di aprile 2021 che si matura mensilmente fino ad aprile 2030. Non sono stati venduti ulteriori derivati e Day mantiene 44.784 opzioni non esercitate dall'assegnazione. La vendita consistente potrebbe influenzare il sentimento degli investitori data la posizione senior del dirigente.

Magnite (NASDAQ:MGNI) presentó un Formulario 4 revelando que el CFO David Day ejerció 71,000 opciones sobre acciones a $5.28 y vendió inmediatamente la misma cantidad de acciones ordinarias.

Las operaciones, realizadas el 24 y 26 de junio de 2025 bajo un plan preestablecido Regla 10b5-1, generaron ingresos brutos de aproximadamente $1.45 millones (35k @ $19.95, 36k @ $20.95). Tras estas transacciones, la propiedad directa de Day disminuyó a 443,528 acciones, una reducción de alrededor del 14% respecto a sus tenencias anteriores.

Las opciones provienen de una concesión de abril de 2021 que se consolida mensualmente hasta abril de 2030. No se vendieron derivados adicionales y Day conserva 44,784 opciones no ejercidas del otorgamiento. La venta considerable podría afectar el sentimiento de los inversores dada la posición senior del ejecutivo.

Magnite (NASDAQ:MGNI)는 CFO David Day가 5.28달러에 71,000주의 스톡 옵션을 행사하고 동일한 수의 보통주를 즉시 매도했다고 Form 4를 제출했습니다.

이 거래는 2025년 6월 24일과 26일에 사전 승인된 Rule 10b5-1 계획에 따라 실행되었으며, 총 약 145만 달러의 총 수익을 창출했습니다(35,000주 @ 19.95달러, 36,000주 @ 20.95달러). 이 거래 이후 Day의 직접 소유 주식은 443,528주로 감소했으며, 이는 이전 보유량의 약 14% 감소한 수치입니다.

이 옵션은 2021년 4월에 부여된 것으로 2030년 4월까지 매월 권리가 확정됩니다. 추가 파생상품은 매도되지 않았으며, Day는 해당 부여에서 44,784개의 미행사 옵션을 보유하고 있습니다. 이 대규모 매도는 경영진의 고위직 위치를 고려할 때 투자자 심리에 영향을 미칠 수 있습니다.

Magnite (NASDAQ:MGNI) a déposé un formulaire 4 révélant que le CFO David Day a exercé 71 000 options d'achat d'actions à 5,28 $ et a immédiatement vendu le même nombre d'actions ordinaires.

Les transactions, effectuées les 24 et 26 juin 2025 dans le cadre d'un plan préétabli Rule 10b5-1, ont généré un produit brut d'environ 1,45 million de dollars (35k @ 19,95 $, 36k @ 20,95 $). À la suite de ces opérations, la détention directe de Day est tombée à 443 528 actions, soit une réduction d'environ 14 % de ses avoirs précédents.

Les options proviennent d'une attribution d'avril 2021 qui se consolide mensuellement jusqu'en avril 2030. Aucun autre dérivé n'a été vendu et Day conserve 44 784 options non exercées issues de cette attribution. Cette vente importante pourrait influencer le sentiment des investisseurs compte tenu du rôle senior de l'exécutif.

Magnite (NASDAQ:MGNI) reichte ein Formular 4 ein, das offenlegt, dass CFO David Day 71.000 Aktienoptionen zu 5,28 $ ausübte und sofort die gleiche Anzahl Stammaktien verkaufte.

Die Transaktionen, die am 24. und 26. Juni 2025 im Rahmen eines vorab vereinbarten Rule 10b5-1 Plans durchgeführt wurden, generierten Bruttoerlöse von etwa 1,45 Millionen US-Dollar (35.000 @ 19,95 $, 36.000 @ 20,95 $). Nach diesen Transaktionen sank Days direkte Beteiligung auf 443.528 Aktien, eine Reduzierung um etwa 14 % seiner vorherigen Bestände.

Die Optionen stammen aus einer Gewährung im April 2021, die monatlich bis April 2030 vestet. Es wurden keine weiteren Derivate verkauft, und Day behält 44.784 nicht ausgeübte Optionen aus der Zuteilung. Der erhebliche Verkauf könnte die Anlegerstimmung angesichts der leitenden Position des Executives beeinflussen.

Positive
  • None.
Negative
  • CFO sold 71,000 shares (~14% of personal holdings) for approximately $1.45 million, signalling potential insider profit-taking.

Insights

TL;DR: CFO liquidated $1.45 M in shares, cutting stake 14%—generally a bearish governance signal.

Magnitude: 71,000 shares sold at ~4× exercise cost represents a meaningful cash-out above the $1 million materiality threshold.
Timing: Transactions were executed under a 10b5-1 plan adopted 13 Mar 2025, limiting intent speculation but not market impact.
Ownership Impact: Post-sale holdings of 443,528 shares still align incentives, yet disposal of 14% reduces exposure.
Market Read-through: Large planned sales by a finance chief can weigh on sentiment, especially heading into earnings or strategic events. Watch upcoming guidance for confirmation.

TL;DR: Sale is sizable but pre-planned; risk impact leans neutral, monitor if pattern repeats.

The sale’s dollar size is material, but Rule 10b5-1 mechanics mitigate informational asymmetry risk. Day still holds nearly half-a-million shares, preserving long-term alignment. From a portfolio perspective, isolated insider sales rarely dictate allocation; however, consistent multi-executive selling would raise red flags. Investors should assess whether other insiders follow suit and whether Magnite’s cash-flow trajectory justifies management profit-taking.

Magnite (NASDAQ:MGNI) ha depositato un Modulo 4 che rivela che il CFO David Day ha esercitato 71.000 opzioni su azioni a $5,28 e ha immediatamente venduto lo stesso numero di azioni ordinarie.

Le operazioni, eseguite il 24 e 26 giugno 2025 nell'ambito di un piano predefinito Rule 10b5-1, hanno generato proventi lordi di circa 1,45 milioni di dollari (35k @ $19,95, 36k @ $20,95). Dopo queste transazioni, la proprietà diretta di Day è scesa a 443.528 azioni, una riduzione di circa il 14% rispetto alle sue partecipazioni precedenti.

Le opzioni derivano da una concessione di aprile 2021 che si matura mensilmente fino ad aprile 2030. Non sono stati venduti ulteriori derivati e Day mantiene 44.784 opzioni non esercitate dall'assegnazione. La vendita consistente potrebbe influenzare il sentimento degli investitori data la posizione senior del dirigente.

Magnite (NASDAQ:MGNI) presentó un Formulario 4 revelando que el CFO David Day ejerció 71,000 opciones sobre acciones a $5.28 y vendió inmediatamente la misma cantidad de acciones ordinarias.

Las operaciones, realizadas el 24 y 26 de junio de 2025 bajo un plan preestablecido Regla 10b5-1, generaron ingresos brutos de aproximadamente $1.45 millones (35k @ $19.95, 36k @ $20.95). Tras estas transacciones, la propiedad directa de Day disminuyó a 443,528 acciones, una reducción de alrededor del 14% respecto a sus tenencias anteriores.

Las opciones provienen de una concesión de abril de 2021 que se consolida mensualmente hasta abril de 2030. No se vendieron derivados adicionales y Day conserva 44,784 opciones no ejercidas del otorgamiento. La venta considerable podría afectar el sentimiento de los inversores dada la posición senior del ejecutivo.

Magnite (NASDAQ:MGNI)는 CFO David Day가 5.28달러에 71,000주의 스톡 옵션을 행사하고 동일한 수의 보통주를 즉시 매도했다고 Form 4를 제출했습니다.

이 거래는 2025년 6월 24일과 26일에 사전 승인된 Rule 10b5-1 계획에 따라 실행되었으며, 총 약 145만 달러의 총 수익을 창출했습니다(35,000주 @ 19.95달러, 36,000주 @ 20.95달러). 이 거래 이후 Day의 직접 소유 주식은 443,528주로 감소했으며, 이는 이전 보유량의 약 14% 감소한 수치입니다.

이 옵션은 2021년 4월에 부여된 것으로 2030년 4월까지 매월 권리가 확정됩니다. 추가 파생상품은 매도되지 않았으며, Day는 해당 부여에서 44,784개의 미행사 옵션을 보유하고 있습니다. 이 대규모 매도는 경영진의 고위직 위치를 고려할 때 투자자 심리에 영향을 미칠 수 있습니다.

Magnite (NASDAQ:MGNI) a déposé un formulaire 4 révélant que le CFO David Day a exercé 71 000 options d'achat d'actions à 5,28 $ et a immédiatement vendu le même nombre d'actions ordinaires.

Les transactions, effectuées les 24 et 26 juin 2025 dans le cadre d'un plan préétabli Rule 10b5-1, ont généré un produit brut d'environ 1,45 million de dollars (35k @ 19,95 $, 36k @ 20,95 $). À la suite de ces opérations, la détention directe de Day est tombée à 443 528 actions, soit une réduction d'environ 14 % de ses avoirs précédents.

Les options proviennent d'une attribution d'avril 2021 qui se consolide mensuellement jusqu'en avril 2030. Aucun autre dérivé n'a été vendu et Day conserve 44 784 options non exercées issues de cette attribution. Cette vente importante pourrait influencer le sentiment des investisseurs compte tenu du rôle senior de l'exécutif.

Magnite (NASDAQ:MGNI) reichte ein Formular 4 ein, das offenlegt, dass CFO David Day 71.000 Aktienoptionen zu 5,28 $ ausübte und sofort die gleiche Anzahl Stammaktien verkaufte.

Die Transaktionen, die am 24. und 26. Juni 2025 im Rahmen eines vorab vereinbarten Rule 10b5-1 Plans durchgeführt wurden, generierten Bruttoerlöse von etwa 1,45 Millionen US-Dollar (35.000 @ 19,95 $, 36.000 @ 20,95 $). Nach diesen Transaktionen sank Days direkte Beteiligung auf 443.528 Aktien, eine Reduzierung um etwa 14 % seiner vorherigen Bestände.

Die Optionen stammen aus einer Gewährung im April 2021, die monatlich bis April 2030 vestet. Es wurden keine weiteren Derivate verkauft, und Day behält 44.784 nicht ausgeübte Optionen aus der Zuteilung. Der erhebliche Verkauf könnte die Anlegerstimmung angesichts der leitenden Position des Executives beeinflussen.

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*
Day David

(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)
CHIEF FINANCIAL OFFICER
3. Date of Earliest Transaction (Month/Day/Year)
06/24/2025
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 06/24/2025 M(1) 35,000 A $5.28 478,528 D
Common Stock 06/24/2025 S(1) 35,000 D $19.95 443,528 D
Common Stock 06/26/2025 M(1) 36,000 A $5.28 479,528 D
Common Stock 06/26/2025 S(1) 36,000 D $20.95 443,528 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
Employee Stock Option (Right to Buy) $5.28 06/24/2025 M(1) 35,000 (2) 04/01/2030 Common Stock 35,000 $0(3) 80,784 D
Employee Stock Option (Right to Buy) $5.28 06/26/2025 M(1) 36,000 (2) 04/01/2030 Common Stock 36,000 $0(3) 44,784 D
Explanation of Responses:
1. The reported transactions were effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 13, 2025.
2. 25% of the stock options vested on April 1, 2021 and the remaining options shares vested in 36 equal installments each calendar month thereafter.
3. Granted as compensation for services.
/s/ Aaron Saltz, attorney-in-fact 06/26/2025
** 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.

FAQ

How many Magnite shares did CFO David Day sell on 24 & 26 June 2025?

Day sold a total of 71,000 shares of MGNI common stock—35,000 on 24 Jun 2025 and 36,000 on 26 Jun 2025.

What was the total dollar value of David Day's MGNI share sale?

Based on reported sale prices ($19.95 and $20.95), proceeds are estimated at ~$1.45 million before taxes and fees.

How many MGNI shares does the CFO still own after these transactions?

Following the sales, Day directly owns 443,528 Magnite shares.

Were the MGNI insider transactions executed under a 10b5-1 plan?

Yes. The filing states all trades were made under a Rule 10b5-1 plan adopted on 13 March 2025.
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