Wall Thickness (mm) C o o li n g T im e ( S e c ) 40 35 30 25 20 15 10 5 0 0 1 2 3 4 ABS PC Nylon 6/6 FIGURE 1 - Wall thickness vs. cooling time of various plastics FIGURE 2 - Designing for wall thickness changes FIGURE 3 - Internal and external radius guidelines FIGURE 4 - Coring for tight radius design ESCR Design Guide 2 CONTOUR Where possible, contouring the products’ exterior form, as shown in Figure 5, can help to eliminate pooling of fluids.

Khandpur held a series of roles with increasing responsibility, including Executive Vice President, Transportation & Electronics business group, from April 2019 to April 2021; Executive Vice President, Electronics & Energy business group, from July 2017 to March 2019; and Senior Vice President, Research & Development and Chief Technology Officer, from July 2014 to June 2017, among other roles. The Policy generally applies to “Related Person Transactions,” defined as any transaction, arrangement or relationship, or series of similar transactions, arrangements or relationships (including any indebtedness or guarantee of indebtedness), in which (i) the Company or any of its subsidiaries was, is or will be a participant and the amount involved exceeds $120,000 and (ii) any of the following persons had, has or will have a direct or indirect material interest (except those transactions, arrangements or relationships that would not be required to be disclosed pursuant to SEC rules after considering the materiality thresholds set forth in Item 404 of Regulation S-K under the Exchange Act): • our Directors, Director nominees, or Executive Officers; • any immediate family member of any of the foregoing persons; • any person who is known to be the beneficial owner of more than 5% of any class of our voting securities; or • any entity in which any of the foregoing persons is employed or is a partner or principal or in a similar position or in which such person has a 5% or greater beneficial ownership interest. The affirmative vote of a majority of the common shares represented and voting, in person (including virtually) or by proxy, at any meeting of shareholders at which a quorum is present is required for action by shareholders on any matter, unless the vote of a greater number of shares or voting by classes or series is required under Ohio law.

HYPE also hosted a series of webinars with learnings aimed to increase business acumen, educating associates on the breadth of products Avient offers and breaking down the company’s structure to provide tangible examples of how our business segments collaborate to support the customer and drive business. We leveraged peer-to-peer learning through the “Ask the Expert” series, where global associates shared their expertise and personal perspectives in short videos. The new Edgetek™ PKE and LubriOne™ PKE series combine excellent chemical and hydrolysis resistance to meet the challenges of harsh applications, such as those found in chemical, fuel contact, or high- moisture environments.

P: Uno de nuestros clientes nos ha sido leal mientras resolvíamos una serie de problemas.

Khandpur held a series of roles with increasing responsibility, including Executive Vice President, Transportation & Electronics business group, from April 2019 to April 2021; Executive Vice President, Electronics & Energy business group, from July 2017 to March 2019; and Senior Vice President, Research & Development and Chief Technology Officer, from July 2014 to June 2017, among other roles. The Policy generally applies to “Related Person Transactions,” defined as any transaction, arrangement or relationship, or series of similar transactions, arrangements or relationships (including any indebtedness or guarantee of indebtedness), in which (i) the Company or any of its subsidiaries was, is or will be a participant and the amount involved exceeds $120,000 and (ii) any of the following persons had, has or will have a direct or indirect material interest (except those transactions, arrangements or relationships that would not be required to be disclosed pursuant to SEC rules after considering the materiality thresholds set forth in Item 404 of Regulation S-K under the Exchange Act): • our Directors, Director nominees, or Executive Officers; • any immediate family member of any of the foregoing persons; • any person who is known to be the beneficial owner of more than 5% of any class of our voting securities; or • any entity in which any of the foregoing persons is employed or is a partner or principal or in a similar position or in which such person has a 5% or greater beneficial ownership interest. The affirmative vote of a majority of the common shares represented and voting, in person (including virtually) or by proxy, at any meeting of shareholders at which a quorum is present is required for action by shareholders on any matter, unless the vote of a greater number of shares or voting by classes or series is required under Ohio law.

F O m C O *C n C* O *m *z C C C N HH * x y C H 3 O C H 3 O* O C *n 285-056 Peel adhesion 3.23 3.06 3.063.063.062.89 2.89 2.89 2.72 2.72 3.06 2.38 0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 Lexan 141 Cycolac MG38 Cycoloy C2950 Xenoy 5220 Xenoy 1339 Injection speed: 25 mm/sec l, Melt temp: 190°C Melt temp: 200°C Melt temp: 220°C Figure 5: GLS 285-056 adhesion values overmolded onto PC, ABS, PC/ABS and PC/PBT over a wide range of melt emperatures of the TPE. t 285-056 peel adhesion 2.893.06 2.38 2.55 2.55 3.063.06 25 50 75 Injection velocity, mm/sec l, Lexan 141 Cycolac MG38 Cycoloy C2950 Xenoy 5220 Figure 6: GLS 285-056 adhesion values overmolded onto PC, ABS, PC/ABS and PC/PBT over a wide range of injection peeds. s 285-056 tensile properties: initial & aged after 1 week at 70°C. 2.35 1.60 2.77 2.30 1.66 2.77 Figure 7: Physical property retention of GLS 285-056 after 1week at 70°C.

Yes ☑ No ☐ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§ 232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). Through a series of acquisitions and divestitures, the Company has transformed into a premier specialty formulator. Khandpur held a series of roles with increasing responsibility, including Executive Vice President, Transportation & Electronic business group, from April 2019 to April 2021; Executive Vice President, Electronics & Energy business group, from July 2017 to March 2019; and Senior Vice President, Research & Development and Chief Technology Officer, from July 2014 to June 2017, among other roles.

The Policy generally applies to “Related Person Transactions,” defined as any transaction, arrangement or relationship, or series of similar transactions, arrangements or relationships (including any indebtedness or guarantee of indebtedness), in which (i) the Company or any of its subsidiaries was, is or will be a participant and the amount involved exceeds $120,000 and (ii) any of the following persons had, has or will have a direct or indirect material interest (except those transactions, arrangements or relationships that would not be required to be disclosed pursuant to SEC rules after considering the materiality thresholds set forth in Item 404 of Regulation S-K under the Exchange Act): • our Directors, Director nominees, or Executive Officers; • any immediate family member of any of the foregoing persons; • any person who is known to be the beneficial owner of more than 5% of any class of our voting securities; or • any entity in which any of the foregoing persons is employed or is a partner or principal or in a similar position or in which such person has a 5% or greater beneficial ownership interest. The affirmative vote of a majority of the common shares represented and voting, in person (including virtually) or by proxy, at any meeting of shareholders at which a quorum is present is required for action by shareholders on any matter, unless the vote of a greater number of shares or voting by classes or series is required under Ohio law.

Integration and Investment Operating Income ($ in millions) +165% $36 t n $96 Operating Margins +900 bps t n 20% Commercial Resources +40% 243 t n 340 Established Acquisitions (>7 years) 48 Sustainability Report | 2018 Invest to Grow Playbook Safety First!

Top 10 Rules for Overmolded Components 1. .Match the chemistry of the TPE to the substrate for optimized bonding 2. .For new component designs, flow ratios (L/T) should be between 80:1 – 120:1 3. .Incorporate air vents between 0.0005" and 0.001" along the perimeter and/or at the end of fill 4. .Incorporate good flow shutoffs to prevent flashing 5. .Add surface texture to prevent sticking and to mask aesthetic defects 6. .Use a rigid substrate for easy ejection from the mold 7. .Ensure the TPE layer is thick enough to ensure good bonding.