To participate in the audio-only portion of the call, dial 1-844-835-7433 (domestic) or 1-914-495-8589 (international) and provide conference ID number 2587092.  To access, dial 1-855-859-2056 (domestic) or 1-404-537-3406 (international) and provide conference ID number 2587092. Great Place

Their skills, passion, and dedication are shaping a potent industry leader, a concerned corporate citizen, and a great place to work. © PolyOne® Corporation 2007 FOFS-02–72831-B • Massillon, Ohio: Located in the region known for rubber and polymer research, development, and manufacturing, our modern Massillon plant with 90 employees and 100,000 sq. ft. of manufacturing floor space is home to our latest technology. A line of casein-free dispersions is also available. 17 in 11 in 17.25 in 11.25 in CMYK P1PC-011AquamixFactSheet2.indd REMAY 72831-B Zig trim: 17.000" x 11.000" bleed: .125" Digital/IAM QC˛______ ______ Client˛_____ _____ Date ____/____/____ Proof No.4______ 25 50 100 25 50 100 25 2 2 50 100 25 2 2 50 100 Asset No. 72831-B Antioxidants Dispersions AO 2246 Aquamix 105 40 Irganox® 1010 Aquamix 327 40 Irganox® 1076 Aquamix 683 40 Wingstay® L Aquamix 125 50 Antioxidants Emulsions Wingstay® 29/SN-1 Aquamix 312 50 Wingstay® L/SN-1 Aquamix 289 50 Wingstay® L/SN-1 Aquamix 494 60 Higher concentrated version of Aquamix 289. A line of casein-free dispersions is also available. 17 in 11 in 17.25 in 11.25 in CMYK P1PC-011AquamixFactSheet2.indd REMAY 72831-B Zig trim: 17.000" x 11.000" bleed: .125" Digital/IAM QC˛______ ______ Client˛_____ _____ Date ____/____/____ Proof No.4______ 25 50 100 25 50 100 25 2 2 50 100 25 2 2 50 100 Asset No. 72831-B

Versaflex™ Thermoplastic Elastomers Customized a soft (Shore A) TPE solution that passed strict tests, including thermal deformation (80°C for 2 hours), UV resistance, and assembly resistance

Versaflex™ Thermoplastic Elastomers Customized a soft (Shore A) TPE solution that passed strict tests, including thermal deformation (80°C for 2 hours), UV resistance, and assembly resistance

Versaflex™ Thermoplastic Elastomers Customized a soft (Shore A) TPE solution that passed strict tests, including thermal deformation (80°C for 2 hours), UV resistance, and assembly resistance

Compared to our prior adjusted EPS expectations, raw material deflation as well as improving mix from composites and sustainable solutions positively impacted the quarter and more than offset weaker demand conditions.” 2 “Sequentially, we’ve seen modest improvement in Asia, but demand across other regions remains sluggish, particularly in Europe, as consumers remain cautious with continued inflation and rising interest rates,” Mr. Conference call participants in the question and answer session should pre-register using the link at avient.com/investors, or here, to receive the dial-in numbers and a personal PIN, which are required to access the conference call. They are based on management's expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements.

The underlying growth in these regions helped offset softer demand in Europe and Southeast Asia." 2 2024 Outlook “Looking ahead to the second quarter, we expect adjusted EPS of $0.71, a 13% increase over the prior year," said Jamie Beggs, Senior Vice President and Chief Financial Officer, Avient Corporation. Conference call participants in the question and answer session should pre-register using the link at avient.com/investors, or here, to receive the dial-in numbers and personal PIN. They are based on management’s expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements.

This performance reflects our team's focus to capitalize on growth opportunities across the many end markets we serve, with particular success this quarter in packaging and consumer, our two largest end markets.” 2 Dr. Conference call participants in the question and answer session should pre-register using the link at avient.com/investors, or here, to receive the dial-in numbers and personal PIN. They are based on management's expectations that involve a number of business risks and uncertainties, any of which could cause actual results to differ materially from those expressed in or implied by the forward-looking statements.

Certificate of Amendment Loi canadienne sur les sociétés par actionsCanada Business Corporations Act Certificat de modification Avient Colorants Canada Inc. 942266-8 Corporate name / Dénomination sociale Corporation number / Numéro de société Raymond Edwards Date of amendment (YYYY-MM-DD) Date de modification (AAAA-MM-JJ) Director / Directeur 2021-01-15 I HEREBY CERTIFY that the articles of the above-named corporation are amended under section 178 of the Canada Business Corporations Act as set out in the attached articles of amendment. Corporation number Numéro de la société 2 942266-8 The articles are amended as follows Les statuts sont modifiés de la façon suivante 3 The corporation changes its name to: La dénomination sociale est modifiée pour : Avient Colorants Canada Inc. It will be stored in personal information bank number IC/PPU-049.

A Great Place to Work With all the time, effort and resources we invest to build our culture and support our associates, we have been honored to receive awards that showcase our company and people. In 2022, we were very proud to be certified as a Great Place to Work® by the Great Place to Work Institute.