Form 424B3 DOW CHEMICAL CO /DE/

The information in this preliminary pricing supplement is not complete and may be changed. This preliminary pricing supplement and the accompanying prospectus supplement and prospectus are not offers to sell these securities and are not soliciting an offer to buy these securities in any jurisdiction where the offer or sale is not permitted.

Subject to completion

Preliminary Pricing Supplement dated September 20, 2021

Redemption Information: Callable at 100.000% on 3/15/2022 and any time thereafter.    

Joint Lead Managers and Lead Agents: InspereX, LLC Agents: Citigroup, Morgan Stanley, Wells Fargo Advisors

This tranche of The Dow Chemical Company InterNotes will be subject to redemption at the option of The Dow Chemical Company, in whole or in part, on the interest payment date occurring on 03/15/2022 and any time thereafter at a redemption price equal to 100% of the principal amount of such The Dow Chemical Company InterNotes plus accrued interest thereon, if any, upon not less than 10 nor more than 60 days prior notice to the noteholder and the trustee, as described in the prospectus.

Investment advisers purchasing for the account of their advisory clients and selected dealers purchasing on an agency basis or for their own accounts on a principal or riskless principal basis, may be offered Notes at a 0.8500% discount to the public offering rate. Notes purchased by selected dealers in level-fee and retirement accounts may be sold to such accounts at a discount up to 0.8500% to the public offering price, thereby not retaining any portion of the discount as compensation.

Redemption Information: Callable at 100.000% on 3/15/2022 and any time thereafter.

Joint Lead Managers and Lead Agents: InspereX, LLC Agents: Citigroup, Morgan Stanley, Wells Fargo Advisors

This tranche of The Dow Chemical Company InterNotes will be subject to redemption at the option of The Dow Chemical Company, in whole or in part, on the interest payment date occurring on 03/15/2022 and any time thereafter at a redemption price equal to 100% of the principal amount of such The Dow Chemical Company InterNotes plus accrued interest thereon, if any, upon not less than 10 nor more than 60 days prior notice to the noteholder and the trustee, as described in the prospectus.

Investment advisers purchasing for the account of their advisory clients and selected dealers purchasing on an agency basis or for their own accounts on a principal or riskless principal basis, may be offered Notes at a 1.2500% discount to the public offering rate. Notes purchased by selected dealers in level-fee and retirement accounts may be sold to such accounts at a discount up to 1.2500% to the public offering price, thereby not retaining any portion of the discount as compensation.

Redemption Information: Callable at 100.000% on 3/15/2022 and any time thereafter.

Joint Lead Managers and Lead Agents: InspereX, LLC Agents: Citigroup, Morgan Stanley, Wells Fargo Advisors

This tranche of The Dow Chemical Company InterNotes will be subject to redemption at the option of The Dow Chemical Company, in whole or in part, on the interest payment date occurring on 03/15/2022 and any time thereafter at a redemption price equal to 100% of the principal amount of such The Dow Chemical Company InterNotes plus accrued interest thereon, if any, upon not less than 10 nor more than 60 days prior notice to the noteholder and the trustee, as described in the prospectus.

Investment advisers purchasing for the account of their advisory clients and selected dealers purchasing on an agency basis or for their own accounts on a principal or riskless principal basis, may be offered Notes at a 2.4000% discount to the public offering rate. Notes purchased by selected dealers in level-fee and retirement accounts may be sold to such accounts at a discount up to 2.4000% to the public offering price, thereby not retaining any portion of the discount as compensation.