Corporate seat Amsterdam First entry in Business Register 12-04-2006 Date of deed of incorporation 11-04-2006 Date of deed of last amendment to the Articles of Association 12-04-2021 Issued capital EUR 19.593,63 Paid-up capital EUR 19.593,63 Filing of the annual accounts The annual accounts for the financial year 2019 were filed on 01-07-2020. Visiting address Stationsplein 8 K, 6221BT Maastricht Telephone number +31437999376 Fax number +31437999333 Internet address www.clariant.com Date of incorporation 11-04-2006 Activities SBI-code: 46751 - Wholesale of basic and industrial chemicals For further information on activities, see Dutch extract. The Chamber of Commerce recommends that this document be viewed in digital form so that its integrity is safeguarded and the signature remains verifiable. 20 21 -0 4- 12 1 4: 06 :2 8 under number CHE-112.279.714 Sole shareholder since 20-10-2015 (registration date: 03-11-2015) Board members Name Borst, Rainer Erich Date of birth 10-10-1961 Date of entry into office 01-07-2020 (registration date: 06-07-2020) Title Director Name Kamalak, Ihsan Date of birth 21-08-1985 Date of entry into office 01-07-2020 (registration date: 06-07-2020) Title Director Name Merklein, Norbert Date of birth 03-05-1964 Date of entry into office 05-03-2021 (registration date: 30-03-2021) Extract was made on 12-04-2021 at 14.06 hours.

Code of Ethics _Sr Financial Officers Revised December 2023 Code of Ethics Applicable to Senior Financial Officers Application and Standards of this Code of Ethics This Code of Ethics applies to Avient’s Chief Executive Officer, Chief Financial Officer, and Corporate Controller. In addition to their responsibilities under this Code of Ethics, these officers must comply with Avient’s Code of Conduct. Each officer must: • avoid potential, real, or perceived conflict of interest situations between personal and professional relationships.

Avient Corporation Chairman, President and Chief Executive Officer, Avient Corporation

Avient is fully committed to protecting the environment by addressing climate change, conserving natural resources and preventing pollution. Avient’s Corporate EH&S Department defines the strategy and monitors performance against related management system standards.

Silcocat™ Peroxide Dispersions can improve your silicone molding process by helping you overcome poor dispersion, slow incorporation, and address safety challenges associated with powdered organic peroxides.  Corporate Literature

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It was developed to address a trend toward creating products that appear more natural and less manufactured. Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers

OnColor BIO solutions address a previously unmet market need by enabling packaging producers to proactively meet toughening legislation, such as France’s new Energy Transition Law. Matt Defosse Marketing Communications Manager, Europe PolyOne Corporation +49 6407-907-0386 matt.defosse@avient.com Company Officers

We’re also directly addressing customer needs and market trends for sustainability and lightweighting.” Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com Company Officers