Pharma BD Deal Intelligence

Sanofi SA / Kali Therapeutics, Inc.

2026 · Licensing/Option · $1.2B · Complete

Outcome grade pending — assessed 5 years post-close.

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The coverage arc

Mar 23, 2026 BioCentury Neutral

Sanofi taps Kali for rights to clinical trispecific for immunology: Deals Report. Sanofi obtained exclusive worldwide rights to Kali Therapeutics' KT501 for…

Mar 23, 2026 Fierce Biotech Neutral

Sanofi returns to T-cell engager territory with $1.2B pact for phase 1-stage trispecific. The deal reflects Sanofi's continued push into immune-depletion…

May 18, 2026 PR Newswire (Kali Therapeutics) Bullish

Released May 18, 2026: KT502, a high-potency CD19 x CD3 bispecific T-cell engager, earned an oral presentation at EULAR 2026 (London, June 4). The release…

Source summaries from our enrichment pipeline; follow links for originals.

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Sanofi obtained exclusive worldwide rights to Kali Therapeutics' KT501, a Phase 1 tri-specific T-cell engager targeting CD3/CD19/BCMA for B-cell autoimmune diseases. Kali receives $180M upfront/near-term plus up to $1.05B in milestones and tiered royalties. Deal reflects Sanofi's continued push into immune-depletion strategies for autoimmune disease.

Key facts

Related deals — scored

DealYearValueOutcome
Sanofi SA / Kali Therapeutics, Inc. (this deal)2026$1.2B
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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