Third Arc Bio

Third Arc Bio

Boston, MA, USA
37 employees
Biotech
Series A · $217M

About Third Arc Bio

Third Arc Bio is a clinical-stage biotech company developing multifunctional antibodies that generate immune synapses to precisely activate or inhibit T cells for oncology and immunology & inflammation diseases. Its lead program, ARC101, is a bispecific T cell engager targeting CLDN6 in Phase 1 trials for solid tumors. The company leverages two proprietary platforms — the ARCStim Platform for solid tumors and the ARCTag Platform for I&I — to deliver superior biologics with best-in-class T cell engagement.

Company details

Team Size37
LocationBoston, MA, USA
IndustryBiotech

Funding

Total raised

$217M

Last stage

Series A

Investors

Andreessen Horowitz
OOmega Funds
Vida Ventures
CCormorant Asset Management
Hillhouse Investment

Founders

Sanjaya Singh

Sanjaya Singh

PhD in molecular biology; co-inventor of Risankizumab (Skyrizi) and other immunology/oncology compounds; former Global Head of Janssen Biotherapeutics at J&J; founded Third Arc Bio in 2022.

LinkedIn
PF

Peter F. Lebowitz

MD, PhD; joined Third Arc Bio as CEO in January 2024; former Global Head of Oncology R&D at Johnson & Johnson, where he oversaw 13 major drug approvals.

LinkedIn
JE

Joe Erhardt

PhD; joined Third Arc Bio in 2023; formerly VP and Global Head of Oncology Discovery and External Innovation at Johnson & Johnson.

What happens next.

No applications, no recruiter spam. Just the intro.

01

Confirm the fit

A few questions to make sure this role is the right shape for you. Two minutes.

02

I pitch you to the company

I write the intro, send it to the founder, and handle the back-and-forth.

03

A meeting lands on your calendar

If they’re a yes, I book the chat. You show up — that’s the whole job-hunt.