Pearson David T. - 08 Jun 2026 Form 4 Insider Report for MAGNITE, INC. (MGNI)

Reporting relationship: Director
Issuer ticker: MGNI
Reported as of: 08 Jun 2026
Net transaction value: -$168,488
SEC form: 4
Accepted by SEC: 10 Jun 2026, 20:45:44 UTC
Prior SEC filing: 27 Oct 2025
Source filing: View source filing
Reporting owner signature: /s/ Aaron Saltz, attorney-in-fact

Key filing fact

Pearson David T. filed Form 4 for MAGNITE, INC. (MGNI) on 10 Jun 2026.

Key facts

This page summarizes Pearson David T.'s Form 4 filing for MAGNITE, INC. (MGNI).
2 reported transactions and 0 derivative rows are listed below.
Accepted by SEC: 10 Jun 2026, 20:45.

Change

Previous filing in this sequence was filed on 27 Oct 2025.
Current net transaction value: -$168,488.

Research use

This tells you what this filing adds before you inspect full transaction and derivative tables.
You can trace every row back to the original SEC filing document.

Evidence

Filed on Form 4

Ownership activity is grounded in SEC Form 4 disclosures.

View source filing

Reporting Owners (1)

CIK 0001575492 Primary reporting owner

PEARSON DAVID T.

Relationship: Director
Address: C/O MAGNITE, INC., 1250 BROADWAY, 9TH FLOOR, NEW YORK
Signature: /s/ Aaron Saltz, attorney-in-fact
Signature date: 10 Jun 2026

Reported non-derivative transactions

Shares, units, or other non-derivative securities reported in this filing.

MGNI transaction

Common Stock

Award

Transaction value
Shares: +13,798
Change %: +18%
Price: $0.000000^*
Shares after: 89,767
Date: 08 Jun 2026
Ownership: Direct
Footnotes: F1, F2

MGNI transaction

Common Stock

Sale

Transaction value: $168,488
Shares: -10,766
Change %: -12%
Price: $15.65
Shares after: 79,001
Date: 10 Jun 2026
Ownership: Direct
Footnotes: F3, F4

^* marks a reported price that did not pass the local price check.

Additional SEC filing notes

Filing notes and footnotes

Rule 10b5-1 trading plan

These transactions were reported as open-market trades under a Rule 10b5-1 plan. The plan lets an insider set trading instructions in advance, which can reduce the risk of trading while in possession of material nonpublic information.

Original filing language: transaction made pursuant to a contract, instruction, or written plan intended to satisfy Rule 10b5-1(c).

Explanation of responses 4 footnotes

Footnote F1

Represents restricted stock units that vest in full on the earliest of (i) June 8, 2027, (ii) the date of the 2027 annual meeting of the Issuer's stockholders, or (iii) a change of control of the Issuer.

Footnote F2

Granted as compensation for services.

Footnote F3

The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person on March 9, 2026.

Footnote F4

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $15.285 to $15.88, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote to this Form 4.