Adam Lee Soroca - 03 Jul 2025 Form 4 Insider Report for MAGNITE, INC. (MGNI)

Signature
/s/ Aaron Saltz, attorney-in-fact
Issuer symbol
MGNI
Transactions as of
03 Jul 2025
Net transactions value
-$1,023,627
Form type
4
Filing time
08 Jul 2025, 17:20:19 UTC
Previous filing
26 Jun 2025
Next filing
20 Aug 2025

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Soroca Adam Lee CHIEF PRODUCT OFFICER C/O MAGNITE, INC., 1250 BROADWAY, 15TH FLOOR, NEW YORK /s/ Aaron Saltz, attorney-in-fact 08 Jul 2025 0001725125

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction MGNI Common Stock Options Exercise $3.94 +2 +0% $1.97 400,929 03 Jul 2025 Direct F1
transaction MGNI Common Stock Options Exercise $40,969 +8,327 +2.1% $4.92 409,256 03 Jul 2025 Direct F1
transaction MGNI Common Stock Sale $1,064,600 -42,584 -10% $25.00 366,672 03 Jul 2025 Direct F1

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction MGNI Employee Stock Option (Right to Buy) Options Exercise $0 -2 -100% $0.000000 0 03 Jul 2025 Common Stock 2 $1.97 Direct F1, F2, F3
transaction MGNI Employee Stock Option (Right to Buy) Options Exercise $0 -8,327 -6.4% $0.000000 121,643 03 Jul 2025 Common Stock 8,327 $4.92 Direct F1, F2, F3
* 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 This exercise and subsequent sale were made pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 7, 2025.
F2 The stock options have fully vested and are immediately exercisable.
F3 Granted as compensation for services.