AXCELIS TECHNOLOGIES INC

Ticker: ACLS CUSIP: 054540208 Class: EQTY

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

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

Q1 2021

Shares 68,500 Value ($000) $2,815 Avg Close $37.29 Range $28.45 - $44.20

Q4 2020

Shares 113,900 Value ($000) $3,317 Avg Close $25.87 Range $21.69 - $30.05

Q3 2020

Shares 103,000 Value ($000) $2,266 Avg Close $25.50 Range $20.40 - $31.50

Q2 2020

Shares 110,700 Value ($000) $3,083 Avg Close $24.39 Range $16.11 - $28.84

Q1 2020

Shares 132,000 Value ($000) $2,417 Avg Close $23.24 Range $12.99 - $29.24

Q1 2018

Shares 10,500 Value ($000) $258 Avg Close $26.28 Range $21.90 - $31.60

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	68,500	$2,815	$37.29	$28.45 - $44.20
Q4 2020	113,900	$3,317	$25.87	$21.69 - $30.05
Q3 2020	103,000	$2,266	$25.50	$20.40 - $31.50
Q2 2020	110,700	$3,083	$24.39	$16.11 - $28.84
Q1 2020	132,000	$2,417	$23.24	$12.99 - $29.24
Q1 2018	10,500	$258	$26.28	$21.90 - $31.60