b) Facility is not included in manufacturing plants total as it is a design center/lab. d) Location also includes a design center/lab.

b) Facility is not included in manufacturing plants total as it is a design center/lab. d) Location also includes a design center/lab.

Fostering imagination • Enabling creative exploration • Focus on customers’ sustainability • Driving long-term revenue growth ColorWorks Avient Corporation 21 • Rapid customer response • Immediate color measurement and quotation • Fast track product development to “now” • Specialized labs for fast sample delivery • Optimized formulations leveraging cost effective raw materials C U S T O M E R - F O C U S E D C O L O R F O R M U L A T I O N Avient Corporation 22 InstaColr CycleWorks A D V A N C I N G T H E C I R C U L A R E C O N O M Y • Laboratory mimics real-world circular recycling in a research environment • Conducts chemistry testing to improve plastics recycling for customers • Screening and evaluation of additive and colorant systems during recycling • Collaboration platform for customers and value chain partners Avient Corporation 23 Avient Corporation 24 Sustainable Solutions Michael Garratt and Walter Ripple Our Sustainability Promise As the world’s premier provider of specialized polymer materials, services and solutions, Avient is committed to meeting the needs of the present without compromising future generations’ ability to meet their needs.

Investor Day Deck - Web Investor Day Forward �Looking �Statements Factors that could cause actual results to differ materially from those implied by these forward-looking statements include, but are not limited to: USE OF �NON-GAAP�MEASURES Investor Day Agenda May 10, 2018 The Leaders Behind the Team Introduction Historic Past Sustainability AT PolyOne Safety First the PolyOne Academy Sustainably Impacting diverse End Markets Products and Portfolio Optimization OUR PLANET Sustainability AT PolyOne Adjusted EPS Expansion Early years defined by Specialty �mix improvement Commodity Pruning �Held Organic Sales Flat Investment in Commercial Resources Driving Results Sustainable Path to Double-Digit EPS Growth Raising the Bar�ROIC drives shareholder return Commercial Excellence STRATEGIC INVESTMENT IN 3 KEY AREAS Key Commercial Investments New Resources Fueling the Future Aligning with trends for Growth Innovation 3 Horizons of Development 3 Horizons of Development 3 Horizons of Development Innovation Pipeline Innovation Drives Earnings Growth IQ DESIGN LABS 3D Printing�Bringing New ideas to life LSS CUSTOMER FIRST The Evolving Customer Relationship Slide Number 37 Inspired future Innovating with PolyOne PolyOne Distribution DISTRIBUTION Service is our business Service is our business Key Commercial Investments Growth through Inside Sales Growth through Multiple Sales Channels New Resources Fueling the Future Inspired future Specialty Engineered Materials Specialty Engineered Materials Specialty Engineered Materials Capitalizing on the global market STRATEGIC INVESTMENT IN 3 KEY AREAS Key Commercial Investments New Resources Fueling the Future growth Through Service Innovation Spotlight: Composites Composites Refresher Strategic Investment History COMPOSITES in Transportation Slide Number 61 Inspired future Performance Products �& Solutions Performance Products & Solutions Performance Products & Solutions STRATEGIC INVESTMENT IN 3 KEY AREAS Key Commercial Investments New Resources Fueling the Future Growth Through Service Growth Through Service Innovation Spotlight: �Flame Retardant�Polymers FLAME RETARDANT �DRIVERS Flame Retardant Performance Spectrum LED Solutions Inspired future Color Additives�& Inks COLOR, ADDITIVES & INKS Color, Additives & Inks Capitalizing on the global market STRATEGIC INVESTMENT IN 3 KEY AREAS Key Commercial Investments New Resources Fueling the Future Growth Through Service Innovation Spotlight: Additive & Colorant�Technologies Barrier Technologies Fiber Colorants Strategic Investment History Slide Number 88 Slide Number 89 COLORMATRIX SELECT™ Enabling the Customer Slide Number 92 Inspired future M&A Review Over a decade of successful specialty acquisitions Invest-to-Grow Strategy Invest-to-Grow Playbook Invest-to-Grow Proof of performance Invest-to-Grow Proof of performance Invest-to-Grow Driving the future Invest-to-Grow Driving the future Strong Pipeline�driven by fragmented Market Summary Financial Review Adjusted EPS Expansion Strategic cash deployment Proof of Performance �Expanding Margins & ROIC Investment in Commercial Resources Driving Results Sustainable Path to Double-Digit EPS Growth ROIC drives shareholder return ROIC drives shareholder return Conclusion Investor Presentation - May 2018 Non-GAAP Investor Presentation - March 2018

3) Facility is not included in manufacturing plants total as it is a design center/lab Patterson, Executive Vice President and Chief Financial Officer 99.1 Audited Financial Statements of SunBelt Chlor Alkali Partnership *101 .INS XBRL Instance Document *101 .SCH XBRL Taxonomy Extension Schema Document *101 .CAL XBRL Taxonomy Extension Calculation Linkbase Document *101 .LAB XBRL Taxonomy Extension Label Linkbase Document *101 .PRE XBRL Taxonomy Extension Presentation Linkbase Document *101 .DEF XBRL Taxonomy Definition Linkbase Document + Indicates management contract or compensatory plan, contract or arrangement in which one or more directors or executive officers of the Registrant may be participants † The exhibits and schedules have been omitted pursuant to Item 601(b)(2) of Regulation S-K and will be provided to the Securities and Exchange Commission upon request Patterson, Executive Vice President and Chief Financial Officer 99.1 Audited Financial Statements of SunBelt Chlor Alkali Partnership *101 .INS XBRL Instance Document *101 .SCH XBRL Taxonomy Extension Schema Document *101 .CAL XBRL Taxonomy Extension Calculation Linkbase Document *101 .LAB XBRL Taxonomy Extension Label Linkbase Document *101 .PRE XBRL Taxonomy Extension Presentation Linkbase Document *101 .DEF XBRL Taxonomy Definition Linkbase Document + Indicates management contract or compensatory plan, contract or arrangement in which one or more directors or executive officers of the Registrant may be participants † The exhibits and schedules have been omitted pursuant to Item 601(b)(2) of Regulation S-K and will be provided to the Securities and Exchange Commission upon request

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b) Facility is not included in manufacturing plants total as it is a design center/lab. d) Location also includes a design center/lab.

Headquartered in Avon Lake, Ohio, Avient employs approximately 9,700 people at manufacturing sites and technical labs in North America, South America, Europe, the Middle East, Asia, and Africa. b) Facility is not included in manufacturing plants total as it is a design center/lab.

Headquartered in Avon Lake, Ohio, Avient currently employs approximately 8,400 people at manufacturing sites, distribution facilities and technical labs located in North America, South America, Europe, Middle East, Asia and Africa. 3) Facility is not included in manufacturing plants total as it is a design center/lab

Remi de Napierville, 16.Mumbai, India Quebec, Canada 17.Pamplona, Spain 15.Dongguan, China 18.Bangkok, Thailand (15 manufacturing plants) 19.Pudong (Shanghai), China Shenzhen, China (1) 20.Tianjin, China 21.Novo Hamburgo, Brazil 22.Berea, Ohio (5) 23.Richland Hills, Texas (5) 24.Bethel, Connecticut (5) 25.Barberton, Ohio (5) 26.Knowsley, United Kingdom (5) 27.Eindhoven, Netherlands (5) 28.Suzhou, China (5) 29.Shanghai, China 30.Itupeva, Brazil (5) 31.Odkarby, Finland (5) (31 manufacturing plants) (1) Facility is not included in manufacturing plants total as it is also included as part of another segment. (2) There are two manufacturing plants located at Suzhou, China. (3) Facility is not included in manufacturing plants total as it is a design center/lab. (4) Facility is not owned by PolyOne, however it is included in distribution facility total as it is a principal distribution location. (5) Facility added in connection with the acquisition of ColorMatrix on December 21, 2011. (6) Facility added in connection with the acquisition of Glasforms on December 19, 2012. Diemer, Jr., Senior Vice President and Chief Financial Officer 99.1 Audited Financial Statements of SunBelt Chlor Alkali Partnership (incorporated herein by reference to Exhibit 99.1 to the Company’s Form 10-K, filed with the Commission on February 17, 2012, SEC File No. 1-106091) *101 .INS XBRL Instance Document *101 .SCH XBRL Taxonomy Extension Schema Document *101 .CAL XBRL Taxonomy Extension Calculation Linkbase Document *101 .LAB XBRL Taxonomy Extension Label Linkbase Document *101 .PRE XBRL Taxonomy Extension Presentation Linkbase Document *101 .DEF XBRL Taxonomy Definition Linkbase Document + Indicates management contract or compensatory plan, contract or arrangement in which one or more directors or executive officers of the Registrant may be participants † The exhibits and schedules have been omitted pursuant to Item 601(b)(2) of Regulation S-K and will be provided to the Securities and Exchange Commission upon request