Microsoft PowerPoint - Avient IR Presentation - May 2021 AVIENT CORPORATION M AY 2 0 2 1 I N V E S T O R M E E T I N G S (NYSE: AVNT) DISCLAIMER 2 Forward-Looking Statements 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. Free cash flow conversion calculated as (EBITDA – Capex) / EBITDA Median: 84% Median: 77% HIGH FREE CASH FLOW CONVERSION Avient reflects 2021 estimated EBITDA of $560M and excludes one-time synergy capture CAPEX ($20M) Source: Peer data per Bloomberg market data as of April 27, 2021 87 89 87 86 82 81 76 88 87 84 82 81 78 77 77 77 76 73 70 69 50 19 A vi en t K W R P P G R P M A V Y F U L G C P F M C IF F H X L U N V R E C L A S H C E B N R F O E E M N G R A H U N K R A S C L A L B Source: Peer data per Bloomberg market data as of April 27, 2021 Total Enterprise Value / 2021E EBITDA Our current valuation with updated guidance implies an EBITDA multiple that is below specialty formulator peers and the majority of our chemical peers. With the Clariant Masterbatch acquisition and divestment of the PP&S business, our exposure is now concentrated in less-cyclical and high-growth markets, with increased geographic diversification and a more specialized portfolio that can significantly expand EBITDA margins. 28 Avient reflects 2021 estimated EBITDA of $560M OUR VALUATION VERSUS PEERS Avient Specialty Formulators Other Chemical/Specialty Companies 10.2 17.7 16.0 14.9 14.6 11.6 11.1 26.7 24.0 22.8 14.3 12.7 11.5 11.2 11.1 11.0 10.3 10.1 9.5 9.4 8.3 7.0 A vi en t K W R A V Y R P M P P G G C P F U L A L B H X L E C L IF F F M C B N R A S H G R A F O E S C L E M N U N V R C E K R A H U N Median: 11.1xMedian: 14.8x SUMMARY: WHY INVEST IN AVIENT?

Injection velocity, 5 in/s OM-1040 360 OM-1060 417 OM-1255 246 OM-1262 379 OM-6050-9 253 OM-6065-9 221 60A S-TPE 329 64A TPV 228 Table 5: Materials Temperature, C, Nozzle/Front/Middle/Rear Mold Temperature, C Injection Hi Pressure, psi OM1040 430/430/410/390 80 500 OM1060 430/430/410/390 80 600 OM1245 430/430/410/390 80 500 OM1262 430/430/410/390 80 800 OM6050 480/480/460/440 80 1000 OM6065 480/480/460/440 80 1200 B-TPE-35A 450/450/430/410 80 500 B-TPE-50A 450/450/430/410 80 800 B-TPE-65A 450/440/430/420 80 800 B.TPV-55A 480/480/470/460 80 800 B-TPV-55A 525/520/510/490 110 1500 B-TPV-70A 535/530/520/500/ 110 1500 Figure 2: Effect of overmold thickness on surface hardness on TPE products. 0.0 10.0 20.0 30.0 40.0 50.0 60.0 70.0 80.0 90.0 100.0 0 2 4 6 8 10 Thickness, mm H ar dn es s, S ho re A 12 CL2000X G6713 G7930 G7960 G7980 Adhesion Testing and Results Design Considerations Conclusions

Clariant Revenue Synergies Avient Corporation 19 Avient Corporation 20 Customer Experience I N S P I R A T I O N . I N N O V A T I O N . Avient Corporation 78 Time needed to download a 2 hour movie Low Latency Avient Corporation 79 R E D U C I N G T H E T I M E F O R D A T A T O T R A V E L 4G 300 milliseconds 5G 3 milliseconds Infrastructure 5 G R E Q U I R E S M O R E E Q U I P M E N T 4G4G 5G5G Fiber optic cable Additional radio heads on base station antennae More and larger base station antennae Radio heads 16x more fiber optic cable than 4G Base station antennae Millions of small cell antennae Global 5G infrastructure demand will grow 50% CAGR through 2028 Avient Corporation 80 Infrastructure 5 G A N T E N N A E D E N S I T Y 3G to 4G = 25x more antennae 4G to 5G = 16x more antennae Source: Fiber Broadband AssociationAvient Corporation 81 Infrastructure 5 G R E Q U I R E S M O R E C A B L E • Overall broadband expansion will require 28 million km of fiber optic cable over next 5 years • U.S.

P O L Y O N E A N N U A L R E P O R T 2 0 15 OUR PEOPLE. Joel R. Not pictured: Kim Ann Mink P O L Y O N E A N N U A L R E P O R T 2 0 15 POLYONE.COM ANNUAL REPORT 2016 P O L Y O N E A N N U A L R E P O R T 2 0 16 Annual Report Our Vision Letter to Shareholders FORM 10-K PART I ITEM 1.

EXTRUSION FILM MANUFACTURER S I G N B O A R D P R O T E C T I V E T A P E • Film application with a high concentration of TIO2 (>80%) • Good performance on light fastness and anti-yellowing OnColor Polymer Colorants KEY REQUIREMENTS WHY AVIENT?

Versaflex - CPAP tubing film CPAP TUBING C O R R U G A T E D T U B I N G F I L M • Replacement for polyolefins • Good spring-back • Bondable cuffs • Clear & clean look • Minimize humidity and condensation within the tube • No noticeable odor • FDA, ISO 10993 & USP VI compatible • Provided TPE solution to meet market expectations for improved user comfort & aesthetics • Reduced tube noise and improved drape compliance with new material solution versus polyolefins • Offered solution with improved thermal properties to combat humidity Versaflex™ CL2250 KEY REQUIREMENTS WHY AVIENT?

SAFETY EQUIPMENT MANUFACTURER M I L I T A R Y H E L M E T P A R T S • High impact resistance • RAL 6031 – military green color • High molecular weight • Met impact resistance requirements for military helmets • Delivered strong collaboration with Avient Design team and service • Provided specific RAL color matching for military application Bergamid™ Polymer Formulations KEY REQUIREMENTS WHY AVIENT?

MAJOR OUTDOOR RETAILER I N T E R N A L W I L D G A M E B A C K P A C K F R A M E • Simpler manufacturing process to enable higher volume production • Retain shape while carrying wild game load • Toughness to survive backcountry use • Easy cleaning after use • Lowered production cost by substituting injection molded composite for thermoset layup • Redesigned frame to meet higher structural load requirements • Integrated design features to ease cleaning and improve functionality Complēt™ Long Carbon Fiber PA66 Composite KEY REQUIREMENTS WHY AVIENT?

Investor Relations Contact: Eric R.

Investor Relations Contact: Eric R.