Description POLYONE CORPORATION 3 2013 to 2017 Recast GAAP Financial Information for the Adoption of ASU 2017-07 Q1 Q2 Q3 Q4 YTD Q1 Q2 Q3 Q4 YTD Q1 Q2 Q3 Q4 YTD Operating Income - As Previously Reported 56.3$ 73.1$ 55.5$ 58.1$ 243.0$ 56.0$ 49.3$ 57.9$ (12.6)$ 150.6$ 70.3$ 78.7$ 74.3$ 34.3$ 257.6$ Pension and Postretirement Adjustments: Interest Cost 6.1 6.1 6.1 6.2 24.5 6.4 6.4 6.4 6.4 25.6 5.5 5.5 5.5 5.4 21.9 Expected Return on Plan Assets (9.3) (9.3) (9.3) (9.5) (37.4) (8.1) (8.1) (8.0) (8.0) (32.2) (8.2) (8.2) (8.2) (8.1) (32.7) Mark to Market Adjustment - - - (44.0) (44.0) - - - 56.5 56.5 - - - 11.6 11.6 Operating Income - Recasted for ASU 2017-07 53.1$ 69.9$ 52.3$ 10.8$ 186.1$ 54.3$ 47.6$ 56.3$ 42.3$ 200.5$ 67.6$ 76.0$ 71.6$ 43.2$ 258.4$ Other Income (Expense), net - As Previously Reported 1.5$ (1.3)$ (1.5)$ -$ (1.3)$ (0.7)$ (0.4)$ (1.6)$ (1.4)$ (4.1)$ (0.6)$ (1.2)$ (1.7)$ 0.3$ (3.2)$ Pension and Postretirement Adjustments: Interest Cost (6.1) (6.1) (6.1) (6.2) (24.5) (6.4) (6.4) (6.4) (6.4) (25.6) (5.5) (5.5) (5.5) (5.4) (21.9) Expected Return on Plan Assets 9.3 9.3 9.3 9.5 37.4 8.1 8.1 8.0 8.0 32.2 8.2 8.2 8.2 8.1 32.7 Mark to Market Adjustment - - - 44.0 44.0 - - - (56.5) (56.5) - - - (11.6) (11.6) Other Income (Expense), net - Recasted for ASU 2017-07 4.7$ 1.9$ 1.7$ 47.3$ 55.6$ 1.0$ 1.3$ -$ (56.3)$ (54.0)$ 2.1$ 1.5$ 1.0$ (8.6)$ (4.0)$ Q1 Q2 Q3 Q4 YTD Q1 Q2 Q3 Q4 YTD Operating Income - As Previously Reported 70.4$ 81.8$ 72.0$ 62.1$ 286.3$ 84.0$ 80.0$ 67.7$ 45.8$ 277.5$ Pension and Postretirement Adjustments: Interest Cost 5.3 5.3 5.3 5.3 21.2 4.9 4.9 4.9 5.0 19.7 Expected Return on Plan Assets (7.9) (7.9) (7.8) (7.8) (31.4) (6.9) (6.9) (6.9) (7.0) (27.7) Mark to Market Adjustment - - - (8.4) (8.4) - - - 3.3 3.3 Operating Income - Recasted for ASU 2017-07 67.8$ 79.2$ 69.5$ 51.2$ 267.7$ 82.0$ 78.0$ 65.7$ 47.1$ 272.8$ Other Income (Expense), net - As Previously Reported -$ 0.1$ (0.1)$ 0.4$ 0.4$ (1.1)$ (1.4)$ (0.7)$ (0.9)$ (4.1)$ Pension and Postretirement Adjustments: Interest Cost (5.3) (5.3) (5.3) (5.3) (21.2) (4.9) (4.9) (4.9) (5.0) (19.7) Expected Return on Plan Assets 7.9 7.9 7.8 7.8 31.4 6.9 6.9 6.9 7.0 27.7 Mark to Market Adjustment - - - 8.4 8.4 - - - (3.3) (3.3) Other Income (Expense), net - Recasted for ASU 2017-07 2.6$ 2.7$ 2.4$ 11.3$ 19.0$ 0.9$ 0.6$ 1.3$ (2.2)$ 0.6$ 2013 2014 2015 2016 2017

Uranusweg 3 8938 AJ Leeuwarden The Netherlands +31(0) 58 216 75 99 info@fiber-line.com NOTICE: The information and data contained herein do not constitute sales specifications.

Page 3 • This presentation includes the use of both GAAP (generally accepted accounting principles) and non-GAAP financial measures.

The majority of today’s most popular bleed-resistant plastisol inks use a bleed-resistant technology which is odorless and the bleed resistance is superior to the peroxide predecessors. 3.

X S1060A F-3 Natural

3.

3.

3.

3

Avient will exhibit at Medtec China 2023 at the Suzhou International Expo Center in Hall C1, Stand V402, on June 1-3, 2023.