AVIENT CORPORATION

Ticker: AVNT CUSIP: 05368V106 Class: Common Stock

WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC's Holding History (CIK: 0001644956)

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

Q2 2021

Shares 22,838 Value ($000) $1,123 Avg Close $45.03 Range $41.69 - $48.24

Q1 2021

Shares 198,282 Value ($000) $9,373 Avg Close $39.54 Range $32.51 - $46.22

Q4 2020

Shares 314,112 Value ($000) $12,652 Avg Close $31.09 Range $23.06 - $36.29

Q3 2020

Shares 320,287 Value ($000) $8,475 Avg Close $22.84 Range $20.31 - $24.98

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2021	22,838	$1,123	$45.03	$41.69 - $48.24
Q1 2021	198,282	$9,373	$39.54	$32.51 - $46.22
Q4 2020	314,112	$12,652	$31.09	$23.06 - $36.29
Q3 2020	320,287	$8,475	$22.84	$20.31 - $24.98