Sean Patrick Buckley - 24 Nov 2025 Form 4 Insider Report for MAGNITE, INC. (MGNI)

Signature
/s/ Aaron Saltz, attorney-in-fact
Issuer symbol
MGNI
Transactions as of
24 Nov 2025
Transactions value $
-$32,089
Form type
4
Filing time
26 Nov 2025, 16:10:18 UTC
Previous filing
18 Nov 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Buckley Sean Patrick President, Revenue C/O MAGNITE, INC., 1250 BROADWAY, 9TH FLOOR, NEW YORK /s/ Aaron Saltz, attorney-in-fact 26 Nov 2025 0001865116

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MGNI Common Stock Sale -$32.1K -2.21K -0.82% $14.50 269K 24 Nov 2025 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

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).

Explanation of Responses:

Id Content
F1 The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on November 24, 2023.