Name Number of Deferred Shares(1) (#) R.E. Garratt 2/11/2019 — — — — 6,227 348,401 — — 2/10/2020 — — — — 6,596 369,046 — — 2/08/2021 — — — — 5,142 287,695 — — 2/04/2015 9,200 — 38.27 2/4/2025 — — — — 2/15/2017 13,250 — 34.10 2/15/2027 — — — — 2/14/2018 11,050 — 41.89 2/14/2028 — — — — 2/11/2019 12,133 6,067 31.54 2/11/2029 — — — — 2/10/2020 6,550 13,100 31.48 2/10/2030 — — — — 2/08/2021 — 20,150 42.27 2/8/2031 — — — — L.K. Kunkle 2/11/2019 — — — — 6,603 369,438 — — 2/20/2020 — — — — 7,121 398,420 — — 2/08/2021 — — — — 5,498 307,613 — — 2/15/2017 12,100 — 34.10 2/15/2027 — — — — 2/14/2018 11,500 — 41.89 2/14/2028 — — — — 2/11/2019 12,833 6,417 31.54 2/11/2029 — — — — 2/10/2020 7,067 14,133 31.48 2/10/2030 — — — — 2/08/2021 — 21,650 42.27 2/8/2031 — — — — J.R.

Internally, we were certified for the fifth year as a Great Place to Work®. Until that number is zero, we have more work to do. PSIC: 0 2.

Internally, we were certified for the fifth year as a Great Place to Work®. Until that number is zero, we have more work to do. PSIC: 0 2.

Please be informed that Avient does not provide detailed information about buildings and facilities, storage area, staff numbers and union organizations on surveys. A safety management system is in place in all our locations to analyze, reduce risk, and improve safety performance. IT Security Firewall Critical Data Firewall systems are in place on our network.

Performance against these expectations is assessed via third party reviews of management systems in place. Note: a base year is not applicable to this goal, because as the number of suppliers fluctuates so does the number of suppliers that need to be assessed to achieve our goal – i.e. the achievement of the target is not tied to a base year. Verification/assurance status Scope 1 Third-party verification or assurance process in place Scope 2 (location-based or market-based) Third-party verification or assurance process in place Scope 3 Third-party verification or assurance process in place Avient CDP Climate Change Questionnaire 2022 Friday, July 29, 2022 105 C10.1a (C10.1a) Provide further details of the verification/assurance undertaken for your Scope 1 emissions, and attach the relevant statements.

The virtual format enables full and equal participation of all shareholders regardless of location, and reduces the cost and environmental impact of the Annual Meeting. Name Number of Deferred Shares(1) (#) R.E. The “People” metric considered both (1) the results of our 2023 Great Places to Work® employee engagement survey (and whether the results resulted in certification by Great Places to Work and an improvement over the prior year’s scores), and (2) the percentage of employees who participated in a safety activity during the year.

Anthranilamide based AA scavengers are prone to migration and formation of primary aromatic amines, both of which increase regulatory risk.

POLYONE I N V E S T O R P R E S E N T A T I O N J U N E 2 0 1 8 FORWARD LOOKING STATEMENTS PolyOne Corporation 2 In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements. Service:�The Timeless differentiator Talent development IQ DESIGN LABS LSS CUSTOMER FIRST 3D Printing�Bringing New ideas to life Slide Number 34 Innovating with PolyOne COLOR, ADDITIVES & INKS Color, Additives & Inks Specialty Engineered Materials Specialty Engineered Materials Performance Products & Solutions Performance Products & Solutions DISTRIBUTION Target end markets & �application examples Slide Number 44 Slide Number 45 Slide Number 46 Slide Number 47 Slide Number 48 Slide Number 49 Slide Number 50 Slide Number 51 Slide Number 52 Slide Number 53 Slide Number 54 Slide Number 55 Investor Presentation - June 2018 Investor Presentation - March 2018 Adjusted EBITDA

The virtual format enables full and equal participation of all shareholders regardless of location, and reduces the cost and environmental impact of the Annual Meeting. Name Number of Deferred Shares(1) (#) R.E. The “People” metric considered both (1) the results of our 2023 Great Places to Work® employee engagement survey (and whether the results resulted in certification by Great Places to Work and an improvement over the prior year’s scores), and (2) the percentage of employees who participated in a safety activity during the year.

Investor Day POLYONE I N V E S T O R P R E S E N T A T I O N S E P T E M B E R 2 0 1 9 FORWARD LOOKING STATEMENTS PolyOne Corporation 2 In this presentation, statements that are not reported financial results or other historical information are “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Binder • PET, Polyester, Kevlar yarns coated with Swellcoat (absorbs and blocks water) 2 3 4 5 7 6 8 9. Service:�The Timeless differentiator Talent development IQ DESIGN LABS LSS CUSTOMER FIRST 3D Printing�Bringing New ideas to life Slide Number 36 Innovating with PolyOne COLOR, ADDITIVES & INKS Color, Additives & Inks Specialty Engineered Materials Specialty Engineered Materials Performance Products & Solutions Performance Products & Solutions DISTRIBUTION Overview of RAW MATERIAL PURCHASES Target end markets & �application examples Slide Number 47 Slide Number 48 Slide Number 49 Slide Number 50 Slide Number 51 Slide Number 52 Slide Number 53 Slide Number 54 Slide Number 55 Slide Number 56 Slide Number 57