Company: SNY
Filing Date: 2025-07-17
Form Type: SC TO-T/A
Source: 0001193125-25-160176
Chunk: 2

Company: Sanofi
Filing Date: 2025-07-17
Form: SC TO-T/A
Chunk 2
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 Item 11 of this Schedule TO and is supplemented by the information specifically provided in this Amendment, except as otherwise set forth below. This Amendment should be read together with the
Schedule TO. Capitalized terms used and not otherwise defined in this Amendment have the meanings given to such terms in the Offer to Purchase.

Items 1 through 9 and Item 11.

The Offer to
Purchase and Items 1 through 9 and Item 11 of the Schedule TO, to the extent such Items incorporate by reference the information contained in the Offer to Purchase, are hereby amended and supplemented as follows:

“On July 17, 2025, Purchaser announced an extension of the Expiration Time until 5:00 p.m., Eastern time, on July 17, 2025, unless the Offer is
further extended or earlier terminated as permitted by the Merger Agreement. The Offer was previously scheduled to expire at one minute following 11:59 p.m., Eastern time, on July 16, 2025.

The Depositary has advised Purchaser that, as of 11:59 p.m., Eastern time, on July 16, 2025, approximately 29,742,419 Shares have been validly tendered
and not properly withdrawn pursuant to the Offer, representing approximately 45.85% of the outstanding Shares and approximately 23,400,152 Shares have been tendered by notice of guaranteed delivery, representing approximately 36.08% of the
outstanding Shares. Shares tendered by notice of guaranteed delivery are not deemed validly tendered for purposes of satisfying the Minimum Tender Condition unless and until the Shares underlying such notice of guaranteed delivery are delivered to
and “received” (as such term is defined in 251(h) of the DGCL) by the Depositary prior to the Offer Expiration Time. The procedures for the guaranteed delivery of Shares require as a condition to the tender of such Shares that such Shares
are delivered to the Depositary within one (1) NASDAQ trading day after the date of execution of the notice of guaranteed delivery.

The press
release announcing the extension of the Offer is attached hereto as Exhibit (a)(5)(I) and incorporated herein by reference.”

Amendments to the Offer to Purchase and Exhibits to the Schedule TO All references to “one minute following 11:59 p.m., Eastern time, on July 16, 2025” set forth in the Offer to Purchase (Exhibit (a)(1)(A)),