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SEC Form 4 research

MAGNITE, INC. insider transactions

Inspect MAGNITE, INC.'s public SEC insider acquisitions and sales, reporting owners and source receipts.

As of 2026-10-15T08:02:39.132Z

Issuer CIK
0001595974
Reporting owners
47
Officers and directors
28
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What is a Form 4?

Animation: what a Form 4 is, shown with one real example. Sonic Automotive (SAH) reporting owner Paul P. Rusnak bought 13,701 shares at $59.78 on Wednesday, October 7, 2026, transaction code P, an open-market purchase (S is a sale and A is an award from the company). A timeline marks the SEC's two-business-day filing deadline, which ends Friday, October 9. The SEC accepted the Form 4 at 4:33:21 PM ET on October 9, and NexusTrade treats it as public one minute later, at 4:34:21 PM ET. A lamp for NexusTrade's InsiderTrades indicator stays off from the trade date until that moment, then counts one purchase worth 13,701 × $59.78 = $819,045.78.
In this example the shares were bought on Oct 7, 2026, and NexusTrade's InsiderTrades indicator can count the purchase starting at 4:34:21 PM ET on Oct 9, one minute after the SEC accepted the Form 4.

A Form 4 is the SEC filing a company insider, such as an officer, director or 10% owner, uses to report a trade in the company's stock, generally within two business days. The animation follows one real filing as an example: Paul P. Rusnak's purchase of Sonic Automotive (SAH) shares on October 7, 2026.

The same reading applies to every row on this page. The trade date is when the shares changed hands. The available date is when NexusTrade treats the filing as public, and a NexusTrade InsiderTrades indicator counts a purchase (code P) or sale (code S) only from that moment. Code A awards are not counted as purchases.

Read one actual disclosure before using it

Show the table · 1 row, 7 columns

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2026-10-022026-10-01Sullivan HaasA24,641$0Not reported

First displayed source row from Recent insider disclosures. The full bounded history and coverage notes remain below.

The displayed observation date is 2026-10-01 and its public availability date is 2026-10-02. Subtracting those calendar dates gives 1 day of disclosure lag. Historical public research can use the record from the availability date, rather than backdating knowledge to the observation date. The calendar-day difference does not assert an intraday publication time.

This row is code A: a award. An award is an acquisition but is not an open-market purchase. A purchase-following rule must not count it as code P.

Open the linked original receipts to verify the row, then inspect a second record before drawing a pattern. This public filing observation supplies source evidence, not a completed copy-trading return.

Recent insider disclosures

Inspect all 30 displayed rows: Recent insider disclosures

This table includes purchases, sales and awards in the public filing record. Awards and open-market purchases are distinct transaction codes. For historical research, use the public availability date to determine when the transaction was knowable.

Read code P as a purchase, S as a sale and A as an award. An award is an acquisition, but it is not an open-market purchase. Open the filing receipt to check the transaction details.

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2026-10-022026-10-01Sullivan HaasA24,641$0Not reported
2026-10-022026-10-01Gephart BrianA64,682$0Not reported
2026-09-182026-09-17Caine PaulS7,500$26.5Not reported
2026-09-182026-09-17Knopper Douglas SS37,337$26.28Not reported
2026-09-162026-09-14Buonasera DavidS1,165$24Not reported
2026-09-162026-09-14Spillane Robert FS10,363$23.76Not reported
2026-09-112026-09-11Evans Katie SeitzS13,997$24Not reported
2026-09-112026-09-10Saltz AaronS40,000$23.41Not reported
2026-09-112026-09-10Caine PaulS5,000$23.53Not reported
2026-09-102026-09-09Evans Katie SeitzS11,100$23.46Not reported
2026-09-102026-09-08Evans Katie SeitzS32,285$23.63Not reported
2026-09-042026-09-02Buonasera DavidS1,043$25Not reported
2026-09-042026-09-01Buonasera DavidS5,371$23.42Not reported
2026-08-292026-08-28Harden Sarah PatriciaS18,436$24Not reported
2026-08-292026-08-26Harden Sarah PatriciaS30,550$23.31Not reported
2026-08-192026-08-18Buckley Sean PatrickS2,759$25Not reported
2026-08-192026-08-17Buckley Sean PatrickS8,271$24.31Not reported
2026-08-192026-08-14Caine PaulS7,500$25Not reported
2026-08-132026-08-10Gephart BrianS12,479$24.68Not reported
2026-08-132026-08-10Lam RachelS10,000$24.16Not reported
2026-08-132026-08-10Caine PaulS5,000$24.35Not reported
2026-08-082026-08-06Buonasera DavidS871$25Not reported
2026-08-082026-08-06Buonasera DavidS2,602$24Not reported
2026-08-082026-08-06Buonasera DavidS4,176$22.81Not reported
2026-08-082026-08-06Buckley Sean PatrickS19,237$23Not reported
2026-08-082026-08-06Buckley Sean PatrickS47,942$25.09Not reported
2026-08-082026-08-06Evans Katie SeitzS20,000$24Not reported
2026-08-082026-08-06Knopper Douglas SS37,337$22.72Not reported
2026-08-082026-08-06BARRETT MICHAEL G.S293,968$22.72Not reported
2026-07-182026-07-15BARRETT MICHAEL G.S38,596$20.35Not reported

Most recent 90-day source activity, up to 50 rows. No rows means no matching recent records, not no historical activity.

Officers and directors in the directory

Inspect all 29 displayed rows: Officers and directors in the directory

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Rossman James00012966259
Evans Katie Seitz000170026233
Gephart Brian000177848410
Lam Rachel000157923234
Buckley Sean Patrick000186511628
Knopper Douglas S000135087610
Buonasera David000196685728
Spillane Robert F00016038087
Copple Brian William000120167416
PEARSON DAVID T.000157549219
ADDANTE FRANK000160380745
BARRETT MICHAEL G.000110061245
Caine Paul000141176529
Day David000152328859
Feldman Jonathan00017451836
Filip Eve00017451818
Harden Sarah Patricia00017818732
Hughes Shawna00018134093
Kershaw Thomas000168617920
MOHN JARL00011869345
Patz Harry Jr00016808501
Prusz Joseph R000172103911
RAIFMAN GREGORY R000111190913
Saltz Aaron000180798634
Soroca Adam Lee000172512543
TAPPIN TODD L000122238714
TROE LISA L00016038309
Tuller Blima00014123167
Yu Diane00019179811

Which transactions qualify for the company tracker

The company strategy uses verified officers and directors with qualifying acquisitions at this issuer. Other reporting owners may appear in source records without becoming strategy signals.

Strategy eligibility is held while filing coverage is unresolved.

Historical follower simulations are separate from these source transactions. They do not establish live trading results.