David Buonasera - Sep 3, 2025 Form 4 Insider Report for MAGNITE, INC. (MGNI)

Signature
/s/ Aaron Saltz, attorney-in-fact
Stock symbol
MGNI
Transactions as of
Sep 3, 2025
Transactions value $
-$74,842
Form type
4
Date filed
9/4/2025, 05:00 PM
Previous filing
Aug 20, 2025
Next filing
Nov 18, 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Buonasera David CHIEF TECHNOLOGY OFFICER C/O MAGNITE, INC., 1250 BROADWAY, 15TH FLOOR, NEW YORK /s/ Aaron Saltz, attorney-in-fact 2025-09-04 0001966857

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MGNI Common Stock Sale -$74.8K -2.95K -1.22% $25.37 239K Sep 3, 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 August 15, 2024.