LyondellBasell Update

February 19, 2021
Subject: Update Regarding Severe Winter Storm Freeze impact on Supply

Dear Valued Customer,

As we have communicated over the past several days, all of our Gulf Coast facilities have been adversely impacted by the winter storm that is currently affecting much of the United States. As a result of this
adverse weather event, we were forced to declare force majeure on the supply of most of our intermediate and derivative products.

Plant personnel have returned to each of our facilities, are working through thorough site assessments, and are preparing plans for restart as quickly as possible while ensuring the safety of our employees, our service providers, and our communities.

We wanted to provide the following update to keep you informed of our facilities and logistics status.

 Transportation: Loading of trucks, rail cars, and marine vessels has slowed due to challenges presented from the storm. In addition, the storm has led to lengthened lead-times and limited availability of transportation and terminal capacity.

 Allocation of Product: We are working though our allocation assessment for each facility, and anticipate communicating a product allocation plan next week. Allocation plans will be developed as soon as the anticipated outage period for each facility has been determined and a facility restart schedule developed.

We understand the burden this adverse weather event puts on your company. Rest assured, we are making every effort to return back to normal production as quickly as possible, and we will continue to keep you
updated on our continued site assessments and restart efforts.

We value the trust you place in LyondellBasell as a supplier, and we apologize for any inconvenience this may have on your business. As always, your Account Manager is available to address more specific questions you may have that pertain directly to your business and any order status inquiries.