Announcements
Sidley Represents Sensei Biotherapeutics in Acquisition of Faeth Therapeutics
February 18, 2026
Sidley represented Sensei Biotherapeutics, Inc. (Nasdaq: SNSE), a clinical-stage biotechnology company focused on the discovery and development of next-generation therapeutics for cancer patients, in its acquisition of Faeth Therapeutics Inc., a clinical-stage biotechnology company developing multi-node therapies targeting tumor metabolism and signaling.
Concurrent with the acquisition, Sidley also represented Sensei in its definitive agreement for the sale of Series B non-voting convertible preferred stock in a private placement expected to result in gross proceeds of approximately US$200 million.
The Sidley team was led by Asher Rubin (Technology and Life Sciences Transactions), John Butler (M&A), Istvan Hajdu (Capital Markets), and Nikita Ponomarev (M&A), and included Michael Rohr, Emily Chazen, Xi Zhao, and law clerk Christine Seo (M&A); Nick DeAngelis, Sonia Gupta Barros, Kendell Lee, and Eric Carlson (Capital Markets); Adriana Tibbitts, Collin Marshall, and Kayla Nguyen (Technology and Life Sciences Transactions); Gregory Marrs, Christian Pilhofer, Ryan McLeod, and Madeline Clasen (Employee Benefits and Executive Compensation); Christian Brause and Tyler Combest (Tax); Eric Hoffman (Labor, Employment and Immigration); and IP Transactions Specialist Raza Siddiqui.
Concurrent with the acquisition, Sidley also represented Sensei in its definitive agreement for the sale of Series B non-voting convertible preferred stock in a private placement expected to result in gross proceeds of approximately US$200 million.
The Sidley team was led by Asher Rubin (Technology and Life Sciences Transactions), John Butler (M&A), Istvan Hajdu (Capital Markets), and Nikita Ponomarev (M&A), and included Michael Rohr, Emily Chazen, Xi Zhao, and law clerk Christine Seo (M&A); Nick DeAngelis, Sonia Gupta Barros, Kendell Lee, and Eric Carlson (Capital Markets); Adriana Tibbitts, Collin Marshall, and Kayla Nguyen (Technology and Life Sciences Transactions); Gregory Marrs, Christian Pilhofer, Ryan McLeod, and Madeline Clasen (Employee Benefits and Executive Compensation); Christian Brause and Tyler Combest (Tax); Eric Hoffman (Labor, Employment and Immigration); and IP Transactions Specialist Raza Siddiqui.
Contacts
Baltimore
+1 410 559 2881Baltimore
2850 Quarry Lake Drive, Suite 301
Baltimore, MD 21209
Capabilities
Suggested News & Insights
Sidley Represents Bonaccord Capital in Minority Investment in Prime FinanceMarch 26, 2026Sidley Advises Shield AI on Acquisition of AechelonMarch 26, 2026Sidley Represented Thompson Street Capital Partners in Its Investment in Karpel Computer SystemsMarch 25, 2026Sidley Represents Diversis Capital in Its Acquisition of LTi Technology SolutionsMarch 25, 2026Sidley Represents Apollo Funds in Minority Investment in SyntegonMarch 23, 2026Sidley Advises Verdane in Its Partnership With SmartboxMarch 12, 2026
- Stay Up To DateSubscribe to Sidley Publications
- Follow Sidley on Social MediaSocial Media Directory




