Company: SNY
Filing Date: 2025-10-27
Form Type: 424B5
Source: 0001193125-25-250786
Chunk: 15

Company: Sanofi
Filing Date: 2025-10-27
Form: 424B5
Chunk 15
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 received had such withholding or deduction not been required, subject to certain exceptions and limitations set forth under “Description of the              
 Notes—Payment of Additional Amounts” in this prospectus supplement. If we merge with an entity in a jurisdiction other than France, then the same will apply if withholding taxes are imposed by that other jurisdiction.                             |

| Optional Tax Redemption | Under certain circumstances, the notes may be redeemed, in whole but not in part, at our option at a redemption price equal to 100% of the principal amount of the notes, together with interest accrued to (but excluding) the date fixed for 
 redemption, if we would be required to pay additional amounts with respect to the notes. See “Description of the Notes—Redemption—Tax Redemption” herein and “Description of Debt Securities We May Offer—Special                              
 Situations—Optional Tax Redemption” in the attached prospectus, and “Description of the Notes—Payment of Additional Amounts” in this prospectus supplement.                                                                                    |

| Covenants and Events of Default | The terms and conditions of the notes provide for a limited negative pledge and limited conditions on certain merger and consolidation transactions and our ability to transfer our respective assets substantially as an entirety as well as for 
 certain events of default.                                                                                                                                                                                                                        |

| There are no covenants restricting our (including our subsidiaries’) ability to make payments, incur indebtedness, dispose of assets, issue and sell capital stock, enter into transactions with affiliates or engage 
 in business other than our present business. For further information, see “Description of Notes—Events of Default” in this prospectus supplement and “Description of Debt Securities We May Offer—Special             
 Situations—Mergers and Similar Events” and “Description of Debt Securities We May Offer—Special Situations—Negative Pledge” in the attached prospectus, “Description of the Notes—Special                             
 Situations—Negative Pledge” in this prospectus supplement and “Description of Debt Securities We May Offer—Default and Related Matters—Events of Default” in the attached prospectus.                                 |

| Book-entry Issuance, Settlement and Clearance | We will issue the notes solely in book-entry form in minimum denominations of $2,000 and integral multiples of $1,000 in excess |

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| thereof. The notes will be represented by one or more global securities deposited with DTC and registered in the name of Cede & Co., as nominee of DTC. You will hold beneficial interests                                                             
 in the notes through DTC,