ULTRA CLEAN HLDGS INC

Ticker: UCTT CUSIP: 90385V107 Class: Common Stock

North Star Investment Management Corp.'s Holding History (CIK: 0001342857)

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

Q1 2018

Shares 400 Value ($000) $8 Avg Close $21.09 Range $16.29 - $27.20

Q4 2017

Shares 200 Value ($000) $5 Avg Close $25.63 Range $18.86 - $34.59

Q3 2017

Shares 100 Value ($000) $3 Avg Close $23.64 Range $18.41 - $30.92

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2018	400	$8	$21.09	$16.29 - $27.20
Q4 2017	200	$5	$25.63	$18.86 - $34.59
Q3 2017	100	$3	$23.64	$18.41 - $30.92