Company: SNY
Filing Date: 2025-10-29
Form Type: 424B5
Source: 0001193125-25-255563
Chunk: 116

Company: Sanofi
Filing Date: 2025-10-29
Form: 424B5
Chunk 116
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 as discussed below with respect to market discount and foreign currency gain or loss, the gain or loss that you recognize on the sale,
exchange or retirement of a debt security generally will be capital gain or loss. The gain or loss on the sale, exchange or retirement of a debt security will be long-term capital gain or loss if you have held the debt security for more than one
year on the date of disposition. Under current law, net long- term capital gain recognized by an individual U.S. holder generally will be subject to tax at the preferable tax rates applicable to long-term capital gains, rather than the maximum rate
applicable to net short-term capital gain or ordinary income. The ability of individual U.S. holders to offset capital losses against ordinary income is limited.

Despite the foregoing, the gain or loss that you recognize on the sale, exchange or retirement or other disposition of a foreign currency debt
security generally will be treated as ordinary income or loss (rather than capital gain or loss) to the extent that the gain or loss is attributable to changes in exchange rates during the

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period in which you held the debt security. This foreign currency gain or loss should not be treated as an adjustment to interest income that you receive on the debt security. Original Issue Discount If we issue debt securities at a discount from their stated redemption price at maturity, and the discount is equal to or more than the product of one-fourthof one percent (0.25%) of the stated redemption price at maturity of the debt securities multiplied by the number of full years to their maturity, the debt securities will generally be “Original Issue Discount Debt Securities.” The difference between the issue price and the stated redemption price at maturity of the debt securities will be the “original issue discount.” The “issue price” of the debt securities will generally be the first price at which a substantial amount of the debt securities are sold to the public (i.e., excluding sales of debt securities to underwriters, placement agents, wholesalers, or similar persons). The “stated redemption price at maturity” should include all payments under the debt securities other than payments of qualified stated interest. The term “qualified stated interest” generally means stated interest that is unconditionally payable in cash or property (other than debt instruments issued by us) at least annually during the entire term of a debt security at a single fixed interest rate or, subject to certain conditions, based on one or more interest indices. If you invest in an Original Issue Discount Debt Security, you generally will be subject to the special tax