For more information, visit www.avient.com. To access Avient’s news library online, please visit www.avient.com/news. Media Relations Contacts

For more information, visit www.avient.com/.     To access Avient's news library online, please visit www.avient.com/news.  Media Relations Contacts

For more information, visit www.avient.com.         Media Contact Nicole DeChant Avient Corporation nicole.dechant@avient.com Media Relations Contacts

B H D . 2 11 23 12 10 10 1 2 11 22 1 3 10 10 1 SOH SOCK LAN S1189628F 603-62583692 PENGARAH 2 1 09-Jun-2021 440790-X WP KUALA LUMPUR KUALA LUMPUR 5 2 1 0 0 9-3A-1, JLN METRO PERDANA BARAT 1, TMN USAHAWAN KEPONG UTARA,

MARINE PLYWOOD Hammerhead™ panels are three times lighter than marine plywood MOISTURE ABSORPTION % weight change due to water absorption for selected composites and marine plywood 10000 60000 110000 160000 210000 260000 310000 360000 0.5 0.75 1 1.25 1.5 F le x u ra l R ig id it y - lb / in 2 Panel Thickness - in Hammerhead™ 5.3lb/in^3 Core Density Hammerhead™ 8.4lb/in^3 Core Density Plywood — Hammerhead™ 5.3 lb/ft3 Core Density — Hammerhead™ 8.4 lb/ft3 Core Density — Marine Plywood 0% 10% 20% 30% 40% 50% 60% 70% 80% 90% 0 10 20 30 40 50 60 70 80 90 100 % W e ig h t C h a n g e Immersion Time - Days .50" Hammerhead™ .75" Hammerhead™ 1" Hammerhead™ 1.50" Hammerhead™ .50" marine plywood .75" marine plywood 1" marine plywood Fl ex ur al R ig id it y - l b- in 2 INSTALLATION INSTRUCTIONS CUTTING & DRILLING Recommended blade: Industrial fine cut-off saw blade, 10" x 80 teeth 38° ATB grind with 5/8" bore, PTFE coating Recommended router bits: 3/8" diameter, 4 flute TiAlN (titanium aluminum nitride) coated carbide bit FORMING Apply localized 400˚F heat at a length proportional to the panel thickness (see equation below) and bend to shape. Contact Avient for more information. To learn more about Avient’s advanced composite solutions, contact Avient at +1.844.4AVIENT www.avient.com

Contact Avient for more information. Reference to them does not indicate any affiliation with or endorsement by them. 1 surface sanded with 220 grit scuff prep 2 surface primed with 459T For more information on installation, adhesives, and fasteners for specific applications, please contact Avient. To learn more about our advanced composite solutions, contact Avient at 1.844.4AVIENT or visit www.avient.com.

For more information, visit www.avient.com/. 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. Investor Contacts

Since the products made from ATO that are covered by this summary are industrial chemicals, the consumer is unlikely to come into contact with these products. However, because antimony trioxide has some solubility in water, it will eventually come into contact with moisture and dissolve in water to generate antimony ions. COMPANY CONTACT INFORMATION corporateregulatory@avient.com

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For more information, visit www.avient.com/. news library online, please visit www.avient.com/news Investor Contacts