Swanson Director, Investor Relations PolyOne Corporation +1 440-930-1018 eric.swanson@avient.com Rose Vice President, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com   Company Officers

CLEVELAND – PolyOne Corporation (NYSE: POL), a premier global provider of specialized polymer materials, services and solutions, has announced CLEVELAND – Collaborating with customers to replace metal in LED lights earned PolyOne Corporation (NYSE: POL) recognition at the inaugural Polymers Company Officers

KEY FEATURES • Swellcoat can be applied to any yarn in fiber optic cable • Precision wound for optimal cable production speed • Single & dual ends available • Low dust • Replaces messy gels • High stability package allows for higher output FIBER-LINE™ FIBERS SUITABLE FOR WATER BLOCKING YARN • Para-Aramid • PET Polyester (standard, low, ultra low shrink) fiber • Liquid Crystal Polymer (LCP) • Fiberglass • Dyneema® Ultra-High Molecular Weight Polyethylene (UHMWPE) FIBER-LINE PERFORMANCE-ADDITIVE COATINGS • Swellcoat Coatings: water absorbing protection • Swellcoat Blocker: blocks water migration • Non-wick/Anti-wick Coatings: water resistant shield FIBER-LINE WATER BLOCKING APPLICATIONS • Binder yarn • Buffer tube thread • Filler yarn • Ripcords • Strength members Copyright © 2023, Avient Corporation. Headquarters, R&D, Manufacturing Fiber-Line LLC 3050 Campus Drive Hatfield, PA 19440 +1 215.997.9181 Manufacturing Operations Fiber-Line LLC 280 Performance Drive SE Hickory, NC 28602 +1 828.326.8700 European Headquarters, Operations, Sales Office Fiber-Line International B.V. Fahrenheitlaan 8 9207 HE Drachten The Netherlands +31(0) 58 216 7599 European Manufacturing Operations Fiber-Line International Unit 1B, Churnet Park, James Brindley Road Leek, Staffordshire, ST13 8YH Asia Pacific Operations & Sales Office Fiber-Line International Building 9, No. 8 Lanxiang road, Shimoxi Garden, Wujin Area Changzhou, Jiangsu, China, 213145 +86(0)519-8885 7566 MATERIALS MADE IN AMERICA BY AMERICAN COMPANIES Avient manufactures engineered fiber solutions for fiber optic cable manufacturing through its subsidiary Fiber-Line, LLC.

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Patterson, Chairman, President and Chief Executive Officer, Avient Corporation. For the same reasons, the Company is unable to address the probable significance of the unavailable information. # # # Investor Relations Contact: Giuseppe (Joe) Di Salvo Vice President, Treasurer and Investor Relations Avient Corporation +1 440-930-1921 giuseppe.disalvo@avient.com Media Contact: Kyle G. These costs are included in Corporate and eliminations.

Garratt is senior vice president, president, Color, Additives & Inks for the Europe, Middle East and Africa (EMEA) region at Avient Corporation, a premier provider of specialized and sustainable material solutions and services. Garratt served as chief operating officer of the private equity-owned Excel Polymers, where he led a successful business turnaround, resulting in improvements in revenue and profitability. Avient Corporation • 33587 Walker Road • Avon Lake, Ohio 44012 • 440.930.1000 • www.avient.com