Adam Lee Soroca - 15 Feb 2026 Form 4 Insider Report for MAGNITE, INC. (MGNI)

Signature
/s/ Aaron Saltz, attorney-in-fact
Issuer symbol
MGNI
Transactions as of
15 Feb 2026
Net transactions value
-$479,864
Form type
4
Filing time
18 Feb 2026, 16:55:01 UTC
Previous filing
12 Jan 2026

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Soroca Adam Lee CHIEF PRODUCT OFFICER C/O MAGNITE, INC., 1250 BROADWAY, 9TH FLOOR, NEW YORK /s/ Aaron Saltz, attorney-in-fact 18 Feb 2026 0001725125

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MGNI Common Stock Tax liability $221,516 -18,933 -4.4% $11.70 409,954 15 Feb 2026 Direct F1
transaction MGNI Common Stock Sale $258,348 -21,529 -5.3% $12.00 388,425 18 Feb 2026 Direct F2
* 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 Represents the non-discretionary forfeiture of shares on behalf of the Reporting Person pursuant to an arrangement mandated by the Issuer to cover the tax withholding obligations associated with the vesting of restricted stock units.
F2 These sales were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on August 18, 2025.