CHO PAUL YOONKU

PrivateCIK: 1791106
Location

HAYWARD, CA

CHO PAUL YOONKU (General Counsel and Secretary) sold 11.2% of their position (2K shares) of ULTRA CLEAN HOLDINGS, INC. on the open market

Open‑market sale worth $173.8K — a moderate reduction. Review remaining holdings and any 10b5‑1 plan disclosures.

S · 1 sale
InsiderCHO PAUL YOONKUCIK 1791106
Officer· General Counsel and Secretary
Since Oct 2019
-2K
Net shares
Net seller
$173.8K
Total sold
1
Open market trades
0B · 1S
1
Total transactions
2K disposed
Non-Derivative Transactions1

Common Stock

Direct
S · Sale

Shares

2K

Price / share

$86.89

Trade value

$173.78K

% of position

11.2%
5/8/2026
17.84K15.84K
Total

Net shares

2K

Net value

-$173.78K

Derivative Transactions0
No derivative transactions reported
CHO PAUL YOONKU — Insider Transaction (Form 4) Filed May 12, 2026 | Finecho