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Zag Bio competitors & alternatives
The 12 closest competitors and alternatives to Zag Bio among biotechnology companies — ranked by similarity to what Zag Bio actually does, not by market-cap band.
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About Zag Bio
Zag Bio is a biotechnology research company headquartered in Cambridge, Massachusetts. The enterprise focuses on developing innovative therapies for autoimmune diseases by targeting the thymus gland to engage the body's natural T cell central tolerance mechanisms.
Zag Bio at a glance
Zag Bio is a biotechnology company headquartered in United States. Its most recent funding round, Series A, raised $80M in October 2025. Xcout tracks 11 named people at Zag Bio, including Jason Cole (CEO).
Zag Bio leadership
- Jason ColeCEO
- Jason F. ColeChief Executive Officer and Board Member
- Alison ConlonChief Operating Officer
- Jan HillsonChief Medical Officer
- John KulmanChief Scientific Officer
- John D. KulmanChief Scientific Officer and Co-Founder
5 more named people on record for Zag Bio, with roles, board committees and tenure — see the full roster →
Zag Bio funding rounds
Every round on record:
| Date | Round | Amount | Investors |
|---|---|---|---|
| Series A | $80M | 12 named |
Who invested in each round, lead investors, valuations and the co-investor graph — open the full funding history →
Top 12 Zag Bio competitors
Ranked by semantic similarity — how close each company is to Zag Bio by what it does, using Xcout's live company graph. Click any company for its full profile, or its competitor set.
Similar biotechnology company
Oblenio Bio is a biotechnology research company headquartered in Lexington, Massachusetts, focused on transforming the treatment of refractory autoimmune diseases by delivering a broad immune system reset.
Biotech
TECregen AG is a biotechnology company headquartered in Basel, Switzerland. The company is dedicated to advancing immuno-rejuvenation through the development of next-generation therapies designed to regenerate the thymus.
Similar biotechnology company
Ethyreal Bio is a biotechnology company headquartered in Cambridge, Massachusetts, focused on developing precision therapies for thyroid diseases with high unmet medical needs.
Similar biotechnology company
TRex Bio, Inc. is a clinical-stage biotechnology company headquartered in South San Francisco, California. The company focuses on discovering and developing precision therapeutics to treat moderate-to-severe immune-mediated diseases by targeting regulatory T cells.
Biotech
Zenas BioPharma, Inc. functions as a clinical-stage biopharmaceutical firm, concentrating on the creation and market introduction of innovative, immunology-based treatments. The company's primary investigational therapy is obexelimab, a distinctive bifunctional monoclonal antibody intended to address multiple diseases such as immunoglobulin G4-related disease, multiple sclerosis, systemic lupus erythematosus, and warm autoimmune hemolytic anemia. Its developmental portfolio also features ZB002, an anti-TNFa monoclonal antibody; ZB004, a cytotoxic T-lymphocyte-associated antigen 4-immunoglobulin fusion; ZB001, an anti-insulin-like growth factor-1 receptor monoclonal antibody; and ZB005, an anti-active complement component 1s monoclonal antibody. Established in 2019, the entity was formerly recognized as Zenas BioPharma (Cayman) Limited before adopting its current name, Zenas BioPharma, Inc., in August 2023. Its headquarters are located in Waltham, Massachusetts.
Biotech
Egle Therapeutics SAS is a clinical-stage biotechnology company headquartered in Paris, France, that develops precision medicines designed to modulate regulatory T cells.
Similar biotechnology company
Be Biopharma is a biopharmaceutical company headquartered in Cambridge, Massachusetts, focused on developing engineered B cell therapies.
Similar biotechnology company
Kanyos Bio, Inc. is a biotechnology company located in Cambridge, Massachusetts, created as a subsidiary of Anokion SA to develop clinical candidates for immune tolerance.
Biotech
Repertoire Immune Medicines is a clinical-stage biotechnology company headquartered in Cambridge, Massachusetts. The firm works to unlock and direct the power of the human immune system to develop novel therapeutics and medicines.
Biotech
HiFiBio Therapeutics is a clinical-stage immune modulation biotechnology company headquartered in Cambridge, Massachusetts. The company focuses on discovering and developing novel precision antibody therapeutics for immunology and oncology applications.
Similar biotechnology company
Artax Biopharma, Inc. is a clinical-stage biotechnology company founded in 2013 and headquartered in Cambridge, Massachusetts. The company is focused on transforming the treatment of immune system diseases and recently raised $8 million ahead of a Phase 2a clinical trial.
Similar biotechnology company
Immunitas Therapeutics, Inc. is a US-based biotechnology company established in 2019 and headquartered in Waltham, Massachusetts. The company focuses on pioneering novel therapeutic treatments in immunology and oncology.
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