Company description

In this Annual Report, unless the context otherwise dictates, the terms (i) “we,” “us,” “our,” “Sensei,” the “Company” and other similar terms refer to the business and operations of Sensei Biotherapeutics, Inc. and its consolidated subsidiaries for periods prior to the Acquisition (as defined below) and to Sensei Biotherapeutics, Inc. and its consolidated subsidiaries, including Faeth Therapeutics for periods after the Acquisition; (ii) “Faeth HoldCo” refers to Faeth Holdings Therapeutics, Inc., (iii) “Faeth Subsidiary” refers to Faeth Therapeutics, LLC, a wholly owned subsidiary of Faeth HoldCo, (iv) “Faeth” or “Faeth Therapeutics” refer collectively to Faeth HoldCo and Faeth Subsidiary and (v) “Acquisition” refers to the acquisition by the Company of Faeth Therapeutics pursuant to that Agreement and Plan of Merger, dated February 17, 2026, by and among the Company, Sapphire First Merger Sub, Inc., a Delaware corporation and a wholly owned subsidiary of the Company, Sapphire Second Merger Sub, LLC, a Delaware limited liability company and wholly owned subsidiary of the Company, Faeth HoldCo and Faeth Subsidiary. Overview We are a clinical-stage biotechnology company focused on improving outcomes for cancer patients through multi-node inhibition of critical oncogenic pathways. On February 17, 2026, we completed the acquisition of Faeth Therapeutics, a clinical-stage biotechnology company developing multi-node therapies that target tumor metabolism and signaling.

Read the full filing description · filed 30 Mar 2026

At a glance

Sector

Healthcare

Industry

Pharmaceutical Preparations

Employees (2026)