Pharma BD Deal Intelligence

Merck & Co. Inc. / Seagen Inc.

2020 · Licensing/Option · $4.2B · Complete

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The coverage arc

Sep 14, 2020 Bullish

Merck and Seattle Genetics ink two new strategic cancer collaborations covering ladiratuzumab vedotin ADC and TUKYSA regional licensing deal.

Apr 17, 2026 Bullish

Seattle Genetics and Merck announce two strategic oncology collaborations including $600M upfront plus $1B equity for ladiratuzumab vedotin co-development.

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Merck and Seattle Genetics (now Seagen) formed two strategic oncology collaborations. Merck paid $600M upfront and made a $1B equity investment for global co-development/co-commercialization of ladiratuzumab vedotin (LIV-1 targeting ADC), with up to $2.6B in milestones. Separately, Merck licensed TUKYSA (tucatinib) for HER2+ cancers in Asia, Middle East, LatAm.

Key facts

Related deals — scored

DealYearValueOutcome
Merck & Co. Inc. / Seagen Inc. (this deal)2020$4.2B29
Merck & Co. Inc. / Acceleron Pharma Inc.2021$11.5B90
Merck & Co. Inc. / Peloton Therapeutics Inc.2019$2.2B88
Merck & Co. Inc. / AstraZeneca PLC2017$8.5B87
Merck & Co. Inc. / Moderna, Inc.2022$250M86
Merck & Co. Inc. / Moderna, Inc.2016$250M84
Merck & Co. Inc. / Eisai Co., Ltd.2018$5.8B83

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