Zag Bio

Cambridge, United States

Zag Bio is a biotechnology company that designs thymus-targeting bifunctional antibody medicines to treat and prevent autoimmune diseases.

Oct 2025

Series A

Top Investors

Lightspeed Venture PartnersPear VCAbbVieSanofi VenturesPolaris Partners

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Who are Zag Bio's investors?

Zag Bio's investors include Lightspeed Venture Partners, Pear VC, AbbVie, Sanofi Ventures, Polaris Partners.

Where is Zag Bio headquartered?

Zag Bio is headquartered in Cambridge, United States.

What does Zag Bio do?

Zag Bio is a biotechnology company that designs thymus-targeting bifunctional antibody medicines to treat and prevent autoimmune diseases.

What stage is Zag Bio at?

Zag Bio is at the Series A stage.

Cite this page

Free to use in articles, research, and reference works. Stable URL — will not change. Data on this page last updated October 28, 2025.

MLA

"Zag Bio — Funding & Investors." VCBacked, October 28, 2025, https://www.vcbacked.co/company/zag-bio. Accessed July 1, 2026.

APA

VCBacked. (2025). Zag Bio — Funding & Investors. Retrieved July 1, 2026, from https://www.vcbacked.co/company/zag-bio

Wikipedia (cite web)

{{cite web |title=Zag Bio — Funding & Investors |url=https://www.vcbacked.co/company/zag-bio |website=VCBacked |access-date=July 1, 2026}}

Profile data sourced and verified per the VCBacked methodology. Last funding round dated October 28, 2025.