KNOPPER DOUGLAS S

PrivateCIK: 1350876
Location

NEW YORK, NY

KNOPPER DOUGLAS S sold 42.2% of their position (37.34K shares) of MAGNITE, INC. on the open market

Open‑market sale worth $981.2K — a major position exit. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderKNOPPER DOUGLAS SCIK 1350876
→
IssuerMAGNITE, INC.CIK 1595974
Director
Since Apr 2020
-37.34K
Net shares
Net seller
$981.2K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
37.34K disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

−37.34K

Price / share

$26.28

Trade value

$981.22K

% of position

42.2%
9/17/2026
88.47K→51.14K
Total

Net shares

−37.34K

Net value

-$981.22K

Derivative Transactions0
No derivative transactions reported
KNOPPER DOUGLAS S — Insider Transaction (Form 4) Filed Sep 18, 2026 | Finecho