Sensei Biotherapeutics Announces Acquisition of Faeth Therapeutics
San Diego – February 18, 2026
Cooley advised Faeth Therapeutics (Faeth), a clinical-stage biotechnology company developing multi-node therapies that target tumor metabolism and signaling, on its acquisition by Sensei Biotherapeutics. This acquisition brings Faeth’s lead asset, PIKTOR – a proprietary investigational all-oral combination of serabelisib and sapanisertib that inhibits multiple nodes of the PI3K/AKT/mTOR pathway through PI3K-alpha and dual mTORC1/2 targeting – into Sensei’s pipeline.
The Cooley corporate and M&A team advising Faeth included partners Rama Padmanabhan, Ariel Rom, Madison Jones and Div Gupta, special counsel Justin Kisner, and associates Rajdeep Roger Bains, Brittany Wightman, Lexi Arnold, John DelMastro, Jessica Kocinski, Noah Goldman, Caolinn Mejza, Joe Perry and Heather McShea.
Partner Nyron Persaud and associates Mark Cornillez-Ty and Breanna Qin provided compensation and benefits advice. Partner Charity Williams and associate John Forrest provided advice on intellectual property matters. Partner Ross Eberly and associate Jacob Lahana advised on labor and employment matters. Partner Jeffrey Tolin and associate Hardy Zhou provided advice on tax matters. Special counsel Andrew Epstein and associate Christopher Suhler advised on cyber data and privacy matters.
Cooley previously advised Faeth on its strategic raise in October 2025.
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