AVANTOR INC

Ticker: AVTR CUSIP: 05352A100 Class: EQTY

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

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

Q1 2021

Shares 202,281 Value ($000) $5,852 Avg Close $28.87 Range $26.14 - $31.05

Q1 2020

Shares 403,868 Value ($000) $5,044 Avg Close $16.03 Range $6.66 - $19.39

Q4 2019

Shares 725,631 Value ($000) $13,170 Avg Close $15.92 Range $13.33 - $18.84

Q3 2019

Shares 183,617 Value ($000) $2,699 Avg Close $16.94 Range $13.44 - $19.59

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2021	202,281	$5,852	$28.87	$26.14 - $31.05
Q1 2020	403,868	$5,044	$16.03	$6.66 - $19.39
Q4 2019	725,631	$13,170	$15.92	$13.33 - $18.84
Q3 2019	183,617	$2,699	$16.94	$13.44 - $19.59