CLEVELAND – April 30, 2021 – Avient Corporation (NYSE: AVNT), a leading provider of specialized and sustainable material solutions, today reported its first quarter results for 2021. Eastern Time on April 30, 2021. ET on Friday, April 30, 2021.

Buyer must give Seller written notice of the existence of each claim involving Product (whether based in contract, breach of warranty, negligence, strict liability, other tort or otherwise) within the earlier of thirty (30) calendar days after receipt of the quantity of Product forming the basis for the claim or applicable shelf-life expiration, if any. i) If Buyer is in default of performance of its obligations towards Seller and fails to provide adequate assurance of Buyer’s performance before the date of scheduled delivery; or (ii) if Seller has reasonable doubts with respect to Buyer’s performance of its obligations and Buyer fails to provide to Seller adequate assurance of Buyer’s performance before the date of scheduled delivery and in any case within thirty (30) calendar days of Seller’s demand for such assurance; or (iii) if Buyer becomes insolvent or unable to pay its debts as they mature, or goes into liquidation or any bankruptcy proceeding shall be instituted by or against Buyer or if a trustee or receiver or administrator is appointed for all or a substantial part of the assets of Buyer or if Buyer makes any assignment for the benefit of its creditors; or (iv) in case of non-compliance of Buyer with any law, statute ordinance, regulation, code or standard (“Laws and Standards”), then Seller may by notice in writing to Buyer, without prejudice to any of its other rights: (a) demand return and take repossession of any delivered Products which have not been paid for and all costs relating to the recovery of the Products shall be for the account of Buyer; and/or (b) suspend its performance or terminate its order confirmation for pending delivery of Products unless Buyer makes such payment for Products on a cash in advance basis or provides adequate assurance of such payment for Products to Seller.

Buyer must give Seller written notice of the existence of each claim involving Product (whether based in contract, breach of warranty, negligence, strict liability, other tort or otherwise) within the earlier of thirty (30) days after receipt of the quantity of Product forming the basis for the claim or applicable shelf-life expiration, if any. i) If Buyer is in default of performance of its obligations towards Seller and fails to provide adequate assurance of Buyer’s performance before the date of scheduled delivery; or (ii) if Seller has reasonable doubts with respect to Buyer’s performance of its obligations and Buyer fails to provide to Seller adequate assurance of Buyer’s performance before the date of scheduled delivery and in any case within thirty (30) days of Seller’s demand for such assurance; or (iii) if Buyer becomes insolvent or unable to pay its debts as they mature, or goes into liquidation or any bankruptcy proceeding shall be instituted by or against Buyer or if a trustee or receiver or administrator is appointed for all or a substantial part of the assets of Buyer or if Buyer makes any assignment for the benefit of its creditors; or (iv) in case of non- compliance of Buyer with any law, statute ordinance, regulation, code or standard (“Laws and Standards”), then Seller may by notice in writing to Buyer, without prejudice to any of its other rights: (a) demand return and take repossession of any delivered Products which have not been paid for and all costs relating to the recovery of the Products shall be for the account of Buyer; and/or (b) suspend its performance or terminate its order confirmation for pending delivery of Products unless Buyer makes such payment for Products on a cash in advance basis or provides adequate assurance of such payment for Products to Seller.

Buyer must give Seller written notice of the existence of each claim involving Product (whether based in contract, breach of warranty, negligence, strict liability, other tort or otherwise) within the earlier of thirty (30) days after receipt of the quantity of Product forming the basis for the claim or applicable shelf-life expiration, if any. i) If Buyer is in default of performance of its obligations towards Seller and fails to provide adequate assurance of Buyer’s performance before the date of scheduled delivery; or (ii) if Seller has reasonable doubts with respect to Buyer’s performance of its obligations and Buyer fails to provide to Seller adequate assurance of Buyer’s performance before the date of scheduled delivery and in any case within thirty (30) days of Seller’s demand for such assurance; or (iii) if Buyer becomes insolvent or unable to pay its debts as they mature, or goes into liquidation or any bankruptcy proceeding shall be instituted by or against Buyer or if a trustee or receiver or administrator is appointed for all or a substantial part of the assets of Buyer or if Buyer makes any assignment for the benefit of its creditors; or (iv) in case of non- compliance of Buyer with any law, statute ordinance, regulation, code or standard (“Laws and Standards”), then Seller may by notice in writing to Buyer, without prejudice to any of its other rights: (a) demand return and take repossession of any delivered Products which have not been paid for and all costs relating to the recovery of the Products shall be for the account of Buyer; and/or (b) suspend its performance or terminate its order confirmation for pending delivery of Products unless Buyer makes such payment for Products on a cash in advance basis or provides adequate assurance of such payment for Products to Seller.

Buyer must give Seller written notice of the existence of each claim involving Product (whether based in contract, breach of warranty, negligence, strict liability, breach of statutory duty, other tort or otherwise) within the earlier of thirty (30) days after receipt of the quantity of Product forming the basis for the claim or applicable shelf-life expiration, if any. i) If Buyer is in default of performance of its obligations towards Seller and fails to provide adequate assurance of Buyer’s performance before the date of scheduled delivery; or (ii) if Seller has reasonable doubts with respect to Buyer’s performance of its obligations and Buyer fails to provide to Seller adequate assurance of Buyer’s performance before the date of scheduled delivery and in any case within thirty (30) days of Seller’s demand for such assurance; or (iii) if Buyer becomes insolvent or unable to pay its debts as they mature, or goes into liquidation or any bankruptcy proceeding shall be instituted by or against Buyer or if a trustee or receiver or administrator is appointed for all or a substantial part of the assets of Buyer or if Buyer makes any assignment for the benefit of its creditors; or (iv) in case of non- compliance of Buyer with any law, statute ordinance, regulation, code or standard (“Laws and Standards”), then Seller may by notice in writing to Buyer, without prejudice to any of its other rights: (a) demand return and take repossession of any delivered Products which have not been paid for and all costs relating to the recovery of the Products shall be for the account of Buyer; and/or (b) suspend its performance or terminate its order confirmation for pending delivery of Products unless Buyer makes such payment for Products on a cash in advance basis or provides adequate assurance of such payment for Products to Seller.

Buyer must give Seller written notice of the existence of each claim involving the Product (whether based in contract, breach of warranty, negligence, strict liability, other tort or otherwise) within the earlier of thirty (30) days after receipt of the quantity of the Product forming the basis for the claim or applicable shelf-life expiration, if any. ขอ้จาํกดัความรบัผิด ผูซ้ื7 อจะตรวจสอบสินคา้โดยพลนัหลงัจากไดร้บัสินค้ าวา่มีความเสียหาย ความชาํรุด นํ7าหนักขาดตกบกพรอ่ง และสินคา้ไม่เป็นไปตามที(กาํหนดหรอืไม่ ผูซื้7 อตอ้งแจง้เป็นหนังสอืแก่ผูข้ายใน การเรียกรอ้งแต่ละครั7งเกี(ยวกบัสินคา้ (ไม่วา่จะเป็นการเรียกรอ้งตามสญัญา การผิดการรบัประกนั ความประมาทเลินเล่อ ความรบัผิดโดยสิ7 นเชงิ ละเมิด หรือโดยประการอื(นใด) ภายในสามสิบ (30) วนัหลงัจากไดร้บัสินคา้ตามจาํนวนที(ใชเ้ป็นฐานในการเรียกรอ้ง หรือเมื(อครบกาํหนดระยะเวลาการเก็บสินคา้ดงักล่าว (หากมี) แลว้แต่วา่ระยะเวลาใดจะเกิดขึ7 นก่อน ผูซ้ื7 อเป็นผูร้บัความเสี(ยงทั7งปวงเกี(ยวกบัก ารละเมิดสิทธิบตัรจากการที(ผูซื้7 อนําสินคา้ไปใชร่้วมกบัทรพัยสิ์นอื(น หรือในกระบวนการใดๆ ตลอดจนการละเมิดสิทธิใดๆ ที(เกดิจากการที(ผูข้ายปฏิบติัตามแบบ ขอ้กาํหนดเฉพาะ หรือคาํสั (งการของผูซื้7 อ และผูซื้7 อจะตอ้งแกต่้าง ชดใชค้วามเสียหาย และคุม้ครองผูข้ายใหป้ลอดพน้จากการเรียกรอ้งใดๆ ดงักล่าว ความรบัผิดทั)งหมดของผูข้ายที�มีต่อผูซื้) อสาํหรบัคา่เสียหาย ไม่ว่าจะเกิดจากการผิดการรบัประกนั หรือสาเหตอืุ�นใด และภายใตส้ญัญานี) หรือโดยประการอื�นใด จะไม่เกินราคาซื) อสินคา้ส่วนที�ผูซื้) อเรียกรอ้งคา่เสียหายนั)น ทั)งนี) คูส่ญัญาแตล่ะฝ่ายไม่ตอ้งรบัผิดตอ่คูส่ญัญาอีกฝ่ายหนึ�งสาํหรบัคา่เสียหาย ที�เกี�ยวขอ้ง คา่เสียหายที�เป็นผลตามมา ค่าเสียหายเชิงลงโทษ หรือค่าเสียหายพิเศษใดๆ - 2 - 3.

Multi-family new construction starts are down roughly 30% YOY, while single-family starts are down over 3% in the same period. 2,100 1,800 1,500 1,200 900 600 300 0 Th ou sa nd s o f U ni ts Sep-19 New Residential Construction (Seasonally Adjusted Annual Rate) Sep-20 Sep-21 Sep-22 Source: U.S. The results were immediate: • Approximately 20% savings on material and labor costs • Lightweight, large-format panels fast-tracked installation, shaving about 30% off the project timeline • With flame resistant chemistry integrated into the panel, the materials met ASTM E84 Class A and passed NFPA 286 room burn standards without added complexity While exact numbers remain confidential, the builder also reported notable reductions in both material waste and overall project costs.

Buyer must give Seller written notice of the existence of each claim involving Product (whether based in contract, breach of warranty, negligence, strict liability, other tort or otherwise) within the earlier of thirty (30) days after receipt of the quantity of Product forming the basis for the claim or applicable shelf- life expiration, if any. If (i) Buyer is in default of performance of its obligations towards Seller and fails to provide adequate assurance of Buyer’s performance before the date of scheduled delivery; or (ii) if Seller has reasonable doubts with respect to Buyer’s performance of its obligations and Buyer fails to provide to Seller adequate assurance of Buyer’s performance before the date of scheduled delivery and in any case within thirty (30) days of Seller’s demand for such assurance; or (iii) if Buyer becomes insolvent or unable to pay its debts as they mature, or goes into liquidation or any bankruptcy proceeding shall be instituted by or against Buyer or if a trustee or receiver or administrator is appointed for all or a substantial part of the assets of Buyer or if Buyer makes any assignment for the benefit of its creditors; or (iv) in case of non-compliance of Buyer with any law, statute ordinance, regulation, code or standard (“Laws and Standards”), then Seller may by notice in writing to Buyer, without prejudice to any of its other rights: (a) demand return and take repossession of any delivered Products which have not been paid for and all costs relating to the recovery of the Products shall be for the account of Buyer; and/or (b) suspend its performance or terminate its order confirmation for pending delivery of Products unless Buyer makes such payment for Products on a cash in advance basis or provides adequate assurance of such payment for Products to Seller.

Buyer must give Seller written notice of the existence of each claim involving Product (whether based in contract, breach of warranty, negligence, strict liability, other tort or otherwise) within the earlier of thirty (30) days after receipt of the quantity of Product forming the basis for the claim or applicable shelf-life expiration, if any. If (i) Buyer is in default of performance of its obligations towards Seller and fails to provide adequate assurance of Buyer’s performance before the date of scheduled delivery; or (ii) if Seller has reasonable doubts with respect to Buyer’s performance of its obligations and Buyer fails to provide to Seller adequate assurance of Buyer’s performance before the date of scheduled delivery and in any case within thirty (30) days of Seller’s demand for such assurance; or (iii) if Buyer becomes insolvent or unable to pay its debts as they mature, or goes into liquidation or any bankruptcy proceeding shall be instituted by or against Buyer or if a trustee or receiver or administrator is appointed for all or a substantial part of the assets of Buyer or if Buyer makes any assignment for the benefit of its creditors; or (iv) in case of non- compliance of Buyer with any law, statute ordinance, regulation, code or standard (“Laws and Standards”), then Seller may by notice in writing to Buyer, without prejudice to any of its other rights: (a) demand return and take repossession of any delivered Products which have not been paid for and all costs relating to the recovery of the Products shall be for the account of Buyer; and/or (b) suspend its performance or terminate its order confirmation for pending delivery of Products unless Buyer makes such payment for Products on a cash in advance basis or provides adequate assurance of such payment for Products to Seller.

Buyer must give Seller written notice of the existence of each claim involving Product (whether based in contract, breach of warranty, negligence, strict liability, other tort or otherwise) within the earlier of thirty (30) days after receipt of the quantity of Product forming the basis for the claim or applicable shelf-life expiration, if any. If (i) Buyer is in default of performance of its obligations towards Seller and fails to provide adequate assurance of Buyer’s performance before the date of scheduled delivery; or (ii) if Seller has reasonable doubts with respect to Buyer’s performance of its obligations and Buyer fails to provide to Seller adequate assurance of Buyer’s performance before the date of scheduled delivery and in any case within thirty (30) days of Seller’s demand for such assurance; or (iii) if Buyer becomes insolvent or unable to pay its debts as they mature, or goes into liquidation or any bankruptcy proceeding shall be instituted by or against Buyer or if a trustee or receiver or administrator is appointed for all or a substantial part of the assets of Buyer or if Buyer makes any assignment for the benefit of its creditors; or (iv) in case of non- compliance of Buyer with any law, statute ordinance, regulation, code or standard (“Laws and Standards”), then Seller may by notice in writing to Buyer, without prejudice to any of its other rights: (a) demand return and take repossession of any delivered Products which have not been paid for and all costs relating to the recovery of the Products shall be for the account of Buyer; and/or (b) suspend its performance or terminate its order confirmation for pending delivery of Products unless Buyer makes such payment for Products on a cash in advance basis or provides adequate assurance of such payment for Products to Seller.