Pharma BD Deal Intelligence

Sanofi SA / Blueprint Medicines Corporation

2025 · Acquisition/Merger · $9.5B · Complete

Outcome grade pending — assessed 5 years post-close.

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The coverage arc

Jun 02, 2025 BioSpace Bullish

Sanofi has struck a $9.5 billion deal to buy Blueprint Medicines for an approved rare disease drug and an early-stage immunology pipeline. Leerink analyst Andy…

Jun 02, 2025 STAT News Bullish

Sanofi said Monday it plans to buy Blueprint Medicines in a deal worth more than $9 billion, as the French pharma firm expands its immunology pipeline, a key…

Dec 15, 2025 BioSpace Bullish

The companies in June agreed to a $9.5 billion acquisition deal, giving Sanofi the FDA-approved systemic mastocytosis drug Ayvakit and a pipeline of…

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Sanofi agreed to acquire Blueprint for $129.00/share cash ($9.1B equity) plus CVRs of $2 (BLU-808 clinical milestone) and $4 (BLU-808 regulatory milestone), total up to $9.5B. Adds Ayvakit, the only approved therapy for advanced and indolent systemic mastocytosis, plus early-stage immunology pipeline. Completed July 18, 2025.

Key facts

Related deals — scored

DealYearValueOutcome
Sanofi SA / Blueprint Medicines Corporation (this deal)2025$9.5B
Sanofi SA / Regeneron Pharmaceuticals, Inc.2007$1.0B97
Sanofi SA / Synthelabo S.A.1998$11.0B84
Sanofi SA / Genzyme Corporation2011$20.1B84
Sanofi SA / Amunix Pharmaceuticals Inc.2021$1.2B76
Sanofi SA / Genzyme Corporation2010$18.5B75
Sanofi SA / Translate Bio Inc.2018$805M73

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