ULTRA CLEAN HLDGS INC

Ticker: UCTT CUSIP: 90385V107 Class: Common Stock

MACKAY SHIELDS LLC's Holding History (CIK: 0000061227)

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

Q1 2021

Shares 47,567 Value ($000) $2,761 Avg Close $46.05 Range $31.59 - $59.42

Q4 2020

Shares 104,500 Value ($000) $3,255 Avg Close $27.90 Range $21.08 - $37.02

Q3 2020

Shares 123,100 Value ($000) $2,642 Avg Close $24.28 Range $19.08 - $31.10

Q2 2020

Shares 135,200 Value ($000) $3,059 Avg Close $19.01 Range $12.37 - $24.86

Q1 2020

Shares 31,000 Value ($000) $428 Avg Close $21.23 Range $11.79 - $30.00

Q3 2019

Shares 20,300 Value ($000) $297 Avg Close $13.88 Range $11.20 - $16.67

Q2 2019

Shares 16,500 Value ($000) $229 Avg Close $12.74 Range $10.50 - $14.82

Q2 2018

Shares 245,700 Value ($000) $4,079 Avg Close $17.54 Range $15.36 - $19.59

Q1 2018

Shares 10,400 Value ($000) $200 Avg Close $21.09 Range $16.29 - $27.20

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	47,567	$2,761	$46.05	$31.59 - $59.42
Q4 2020	104,500	$3,255	$27.90	$21.08 - $37.02
Q3 2020	123,100	$2,642	$24.28	$19.08 - $31.10
Q2 2020	135,200	$3,059	$19.01	$12.37 - $24.86
Q1 2020	31,000	$428	$21.23	$11.79 - $30.00
Q3 2019	20,300	$297	$13.88	$11.20 - $16.67
Q2 2019	16,500	$229	$12.74	$10.50 - $14.82
Q2 2018	245,700	$4,079	$17.54	$15.36 - $19.59
Q1 2018	10,400	$200	$21.09	$16.29 - $27.20