Dow Announces TDI Increase, Too

September 22, 2017

TDI Price Action

Dear Valued Customer:

Effective October 1, or as contracts allow, The Dow Chemical Company (“Dow”) will
increase its price $0.12/pound for all market segments in the United States for the
following products:

• VORANATE

Your Dow sales representative will be contacting you in order to answer any questions
you might have and to review your sales plan volumes.

Dow appreciates your business, and we look forward to our continued relationship.