Company: SNY
Filing Date: 2025-10-29
Form Type: 424B5
Source: 0001193125-25-255563
Chunk: 111

Company: Sanofi
Filing Date: 2025-10-29
Form: 424B5
Chunk 111
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 France has entered into estate and gift tax treaties with a number of countries pursuant to which, assuming certain conditions are met, residents of the treaty country may be exempted from such tax or
obtain a tax credit.

Under the Convention between the Government of the United States of America and the Government of French Republic
for the Avoidance of Double Taxation and the Prevention of Fiscal Evasion with Respect to Taxes and Estates and Gifts dated November 24, 1978 (as further amended), a transfer of debt securities by gift or by reason of the death of a U.S. holder
entitled to benefits under that convention generally will not be subject to French gift or inheritance tax, so long as the donor or decedent was not domiciled in France at the time of making the gift or at the time of his or her death and the debt
securities were not used or held for use in the conduct of a business or profession through a permanent establishment or fixed base in France.

United States Taxation

This subsection does not purport to be a complete analysis of the potential U.S. tax considerations relating to an
investment in our debt securities. It deals only with debt securities that are issued in registered form for U.S. tax purposes, are due to mature 30 years or less from the date on which they are issued, and are not issued as part of a
“qualified reopening” for U.S. tax purposes (generally, a reopening of a prior series of debt securities that is treated for U.S. tax purposes as having the same issue price as the original series). The U.S. federal income tax
consequences of owning debt securities, if any, that are issued in bearer form for U.S. tax purposes, debt securities, if any, that are to mature more than 30 years from their date of issue or debt securities, if any, that are issued in a qualified
reopening, and any other special U.S. federal income tax consequences applicable to a particular series of debt securities will be discussed in the related prospectus supplement. Prospective investors should consult their own tax advisors as to the
particular tax considerations applicable to them relating to the purchase, ownership and disposition of our debt securities, including the applicability of the U.S. federal, state and local tax laws, foreign tax laws, and any changes in applicable
tax laws and any pending or proposed legislation or regulations.

The following discussion summarizes certain U.S. federal income tax
considerations that may be relevant to you if