ULTRA CLEAN HLDGS INC

Ticker: UCTT CUSIP: 90385V107 Class: Common Stock

Yorktown Management & Research Co Inc's Holding History (CIK: 0001313559)

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

Q2 2018

Shares 18,557 Value ($000) $308 Avg Close $17.54 Range $15.36 - $19.59

Q1 2018

Shares 16,500 Value ($000) $318 Avg Close $21.09 Range $16.29 - $27.20

Q4 2017

Shares 25,000 Value ($000) $577 Avg Close $25.63 Range $18.86 - $34.59

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2018	18,557	$308	$17.54	$15.36 - $19.59
Q1 2018	16,500	$318	$21.09	$16.29 - $27.20
Q4 2017	25,000	$577	$25.63	$18.86 - $34.59