ULTRA-FAST COLOR DEVELOPMENT AND DELIVERY Utilizing ColorMatrix advanced liquid colorants, Select formulations are created from a series of standardized color base- sets available across our global network of service facilities. Tapping into Avient’s extensive expertise in polymer materials and colorants, ColorWorks can support your design projects across masterbatch and liquid color systems with: • ColorForward color trends and forecast inspirations • Color selection advice and services • Color workshops • Market insights • Creative design services • Design development support • Product trials and prototyping • Production implementation support • Color portfolio management DESIGNERS RAPID VISUALIZATION OF YOUR COLOR For designers, ColorMatrix Select is a powerful design tool that opens up new creative possibilities for coloring plastic products. With a passion for innovation and more than 40 years experience, this advanced thinking in specialist polymer additives and liquid colorants is now helping our expanding network of customers around the globe to prosper and grow.

In 2022, we established a methodology to standardize our approach to calculating PCF. To date we have completed over 1,000 product carbon footprint calculations. Product Carbon Footprint Calculations

The market is being forced to reassess what happens at the end of the product’s life, and to develop sustainable solutions to dispose of, or reuse, packaging post-consumption. Medical Device Trays and Kits

Avient developed a Color Simulation Tool to calculate the final color of a PCR-based end article and that can be used to: Calculate color corrections to meet a target color Based on PCR spectral data, the tool delivers the calculated spectra, a final color visualization and offers three-dimensional color space simulations, that covers the workable color space.

Avient developed a Color Simulation Tool to calculate the final color of a PCR-based end article and that can be used to: Calculate color corrections to meet a target color Based on PCR spectral data, the tool delivers the calculated spectra, a final color visualization and offers three-dimensional color space simulations, that covers the workable color space.

The non-GAAP financial measures include: adjusted EPS, earnings before interest, tax, depreciation and amortization (EBITDA), adjusted EBITDA, net debt, Specialty platform operating income, Specialty platform gross margin percentage, adjusted operating income, return on invested capital, net debt/ EBITDA, and the exclusion of corporate charges in certain calculations. Reconciliation of Non-GAAP Financial Measures (Unaudited) (Dollars in millions, except per share data) Below is a reconciliation of non-GAAP financial measures to the most directly comparable measures calculated and presented in accordance with U.S. Trailing twelve months adjusted gross margin is calculated as follows: Three Months Nine Months Trailing Twelve Months (TTM) Ended (In millions) December 31, 2014 September 30, 2015 September 30, 2015 Gross margin - GAAP $ 152.6 $ 524.6 $ 677.2 Special items in gross margin 15.8 30.0 45.8 Gross margin excluding special items $ 168.4 $ 554.6 $ 723.0 Adjusted EBITDA and net debt to adjusted EBITDA is calculated as follows: Three Months Nine Months Trailing Twelve Months (TTM) Ended (In millions) December 31, 2014 September 30, 2015 September 30, 2015 Income from continuing operations, before income taxes $ (31.2) $ 168.1 $ 136.9 Interest expense, net 15.6 48.5 64.1 Depreciation and amortization 25.0 78.4 103.4 Special items, impact on income from continuing operations before income taxes 80.8 39.8 120.6 Accelerated depreciation included in special items (0.2) (4.6) (4.8) Adjusted EBITDA $ 90.0 $ 330.2 $ 420.2 Short-term portion and current portion of long-term debt $ 61.8 Long-term debt 1,038.0 Less: Cash and cash equivalents (235.7) Net Debt 864.1 Net Debt/TTM Adjusted EBITDA 2.1 Baird Non GAAP Rec Baird - November 10, 2015 POL IR Presentation - November 2015 11.5.2015 - Website ��PolyOne Investor Presentation�RW Baird 2015 Industrial Conference�November 2015�� Forward-Looking Statements Use of Non-GAAP Measures PolyOne Commodity to Specialty Transformation PolyOne�At A Glance Mix Shift Highlights Specialty Transformation Confirmation of Our Strategy Proof of Performance & 2020 Goals Innovation Drives Earnings Growth Innovation Pipeline Potential Innovation Initiatives Design and Service as a Differentiator Customer First Through World-Class Service Debt Maturities & Pension Funding Free Cash Flow and Strong Balance Sheet �Fund Investment / Shareholder Return Why Invest In PolyOne?

HYPE helps build a collaborative network of Avient’s young professionals, eager to innovate and impact our company. HYPE also expanded to LATAM this year to further connect Avient’s network of young professionals across the globe. Networking and career growth

The Company does not provide reconciliations of forward-looking non-GAAP financial measures, such as outlook for adjusted earnings per share, to the most comparable GAAP financial measures on a forward-looking basis because the Company is unable to provide a meaningful or accurate calculation or estimation of reconciling items and the information is not available without unreasonable effort. Below is a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with GAAP. Below is a reconciliation of these non-GAAP financial measures to their most directly comparable financial measures calculated and presented in accordance with GAAP.

When a chemical stress cracking agent diffuses into a polymer network it can increase the chain mobility and free volume of the system. Generally speaking, the more frequently a part is exposed to a stress cracking agent, the more opportunities the agent has to penetrate or diffuse into the polymer network and cause damage. In this study, Avient’s Trilliant™ HC8900 and Edgetek™ ET8900 thermoplastics were tested alongside competitive materials used for various medical and consumer device enclosures.

Global medical device OEM reduces costs and environmental impact