Dow Announces TDI Increase

August 4, 2017

TDI Price Action

Dear Valued Customer:

Effective August 15, or as contracts allow, The Dow Chemical Company (“Dow”) will
increase its price $0.08/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.