X PD 2201 F-2

Nanoblend 2201

EDDY CAP 2201 BLUE

PD 2201

GEON 2201 TRANS 9401

XRU-2201 FEP NP-1108 CC HIGH WHITE

Row 13 (7.26.1) Requesting member Select from: 214 (7.26.2) Scope of emissions Select from: ☑ Scope 1 (7.26.4) Allocation level Select from: ☑ Company wide (7.26.6) Allocation method Select from: ☑ Allocation based on the volume of products purchased (7.26.7) Unit for market value or quantity of goods/services supplied Select from: ☑ Metric tons (7.26.8) Market value or quantity of goods/services supplied to the requesting member 2201 (7.26.9) Emissions in metric tonnes of CO2e 191.47 (7.26.10) Uncertainty (±%) 10 (7.26.11) Major sources of emissions NA 215 (7.26.12) Allocation verified by a third party? Row 27 (7.26.1) Requesting member Select from: 236 (7.26.2) Scope of emissions Select from: ☑ Scope 2: location-based (7.26.4) Allocation level Select from: ☑ Company wide (7.26.6) Allocation method Select from: ☑ Allocation based on the volume of products purchased (7.26.7) Unit for market value or quantity of goods/services supplied Select from: ☑ Metric tons (7.26.8) Market value or quantity of goods/services supplied to the requesting member 2201 (7.26.9) Emissions in metric tonnes of CO2e 919.5 (7.26.10) Uncertainty (±%) 10 (7.26.11) Major sources of emissions NA 237 (7.26.12) Allocation verified by a third party? Row 41 (7.26.1) Requesting member Select from: 258 (7.26.2) Scope of emissions Select from: ☑ Scope 2: market-based (7.26.4) Allocation level Select from: ☑ Company wide (7.26.6) Allocation method Select from: ☑ Allocation based on the volume of products purchased (7.26.7) Unit for market value or quantity of goods/services supplied Select from: ☑ Metric tons (7.26.8) Market value or quantity of goods/services supplied to the requesting member 2201 (7.26.9) Emissions in metric tonnes of CO2e 421.96 (7.26.10) Uncertainty (±%) 10 (7.26.11) Major sources of emissions NA 259 (7.26.12) Allocation verified by a third party?

Ernst & Young LLP, who audited the consolidated financial statements of Avient for the year ended December 31, 2023, also issued an attestation report on Avient’s internal control over financial reporting under Auditing Standard No. 2201 of the Public Company Accounting Oversight Board.

Ernst & Young LLP, who audited the consolidated financial statements of PolyOne for the year ended December 31, 2017, also issued an attestation report on PolyOne’s internal control over financial reporting under Auditing Standard No. 2201 of the Public Company Accounting Oversight Board.

Ernst & Young LLP, who audited the consolidated financial statements of Avient for the year ended December 31, 2022, also issued an attestation report on Avient’s internal control over financial reporting under Auditing Standard No. 2201 of the Public Company Accounting Oversight Board.