ULTRA CLEAN HLDGS INC

Ticker: UCTT CUSIP: 90385V107 Class: Common Stock

Parallax Volatility Advisers, L.P.'s Holding History (CIK: 0001521001)

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

Q4 2019

Shares 12,614 Value ($000) $296 Avg Close $20.22 Range $13.94 - $24.24

Q4 2018

Shares 9,300 Value ($000) $79 Avg Close $9.78 Range $6.94 - $13.00

Q4 2017

Shares 12,527 Value ($000) $289 Avg Close $25.63 Range $18.86 - $34.59

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	12,614	$296	$20.22	$13.94 - $24.24
Q4 2018	9,300	$79	$9.78	$6.94 - $13.00
Q4 2017	12,527	$289	$25.63	$18.86 - $34.59