ULTRA CLEAN HLDGS INC

Ticker: UCTT CUSIP: 90385V107 Class: Common Stock

Alyeska Investment Group, L.P.'s Holding History (CIK: 0001453072)

Note: Option positions (PUT/CALL) are excluded.

Q1 2018

Shares 250,000 Value ($000) $4,813 Avg Close $21.09 Range $16.29 - $27.20

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	250,000	$4,813	$21.09	$16.29 - $27.20