This webcast replaces the previously communicated earnings webcast date that was originally scheduled to be held on Wednesday, April 27.

Spartech results reflect results since the date of acquisition

Any forward-looking statement speaks only as of the date on which such statement is made, and we undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

Any forward-looking statement speaks only as of the date on which such statement is made, and we undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

Any forward-looking statement speaks only as of the date on which such statement is made, and we undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.

From time to time, the ICO may issue a revised Approved Addendum which: a. makes reasonable and proportionate changes to the Approved Addendum, including correcting errors in the Approved Addendum; and/or b. reflects changes to UK Data Protection Laws; The revised Approved Addendum will specify the start date from which the changes to the Approved Addendum are effective and whether the Parties need to review this Addendum including the Appendix Information. This Addendum is automatically amended as set out in the revised Approved Addendum from the start date specified. 19. If the ICO issues a revised Approved Addendum under Section 18, if any Party selected in Table 4 “Ending the Addendum when the Approved Addendum changes”, will as a direct result of the changes in the Approved Addendum have a substantial, disproportionate and demonstrable increase in: a its direct costs of performing its obligations under the Addendum; and/or b its risk under the Addendum, and in either case it has first taken reasonable steps to reduce those costs or risks so that it is not substantial and disproportionate, then that Party may end this Addendum at the end of a reasonable notice period, by providing written notice for that period to the other Party before the start date of the revised Approved Addendum. 20.

Avient acquired the Clariant Color business on July 1, 2020 (the “Acquisition Date”). To provide comparable financial results, the Company references “pro forma” financial metrics, which include the business results of Clariant Color for periods prior to the Acquisition Date.

Except in the case of a force majeure, if not satisfied with Seller’s determination, Buyer as its sole remedy shall have a right to terminate this contract without further obligation upon: (i) 10 days written notice; and (ii) payment for all Product received to date. 12.

Synergies Initial Estimate ($ Millions) Revised Estimate ($ Millions) Administrative $ 18 $ 20 Sourcing 24 30 Operational 18 25 Total Synergies $ 60 $ 75 C L A R I A N T I N T E G R AT I O N & C O S T S Y N E RG I E S U P DATE 13 $1.65 $2.00 2020E Organic 2020 PF 2020 PF w/ Synergies The cost synergies from the Clariant Masterbatch acquisition will help drive substantial margin expansion.

Any forward-looking statement speaks only as of the date on which such statement is made, and we undertake no obligation to publicly update forward-looking statements, whether as a result of new information, future events or otherwise.