BARRETT MICHAEL G.

PrivateCIK: 1100612
Location

PLAYA VISTA, CA

BARRETT MICHAEL G. (President and CEO) sold 15.7% of their position (75K shares) of MAGNITE, INC. on the open market

Open‑market sale worth $1.46M — a significant reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderBARRETT MICHAEL G.CIK 1100612
IssuerMAGNITE, INC.CIK 1595974
DirectorOfficer· President and CEO
Since Aug 2018
-75K
Net shares
Net seller
$1.46M
Total sold
1
Open market trades
0B · 1S
3
Total transactions
75K acquired · 150K disposed
Non-Derivative Transactions2

Common Stock

Direct
M · Option Exercise

Shares

+75K

Price / share

$5.80

Trade value

$435K

% of position

18.6%
6/29/2026
403.07K478.07K

Common Stock

Direct
S · Sale

Shares

75K

Price / share

$19.50

Trade value

$1.46M

% of position

15.7%
6/29/2026
478.07K403.07K
Total

Net shares

+0.00

Net value

-$1.03M

Derivative Transactions1

Employee Stock Option (Right to Buy)

Direct
M · Option Exercise
Converts to

Common Stock

75K shares

Shares

75K

Strike price

5.80

Held after

332.56K

Exercisable

6/29/2026
BARRETT MICHAEL G. — Insider Transaction (Form 4) Filed Jul 1, 2026 | Finecho