Zag Bio

Raised $80M in a Series A round, announced 28 October 2025.

Total raised
$80M

Latest round Series ACountry United StatesSector Health

Round

$80MSeries A, 28 October 2025

$80M launch financing including a Series A advances lead candidate ZAG-101 for type 1 diabetes toward the clinic.

Amount
$80M
Stage
Series A
Announced
28 October 2025
Lead
Polaris Partners
Other investors
T1D Fund, Mission BioCapital, AbbVie Ventures, Lightspeed Ventures, Sanofi Ventures, Regeneron Ventures, Boxer Capital
Use of funds
$80M launch financing including a Series A advances lead candidate ZAG-101 for type 1 diabetes toward the clinic.
Checked
Announced by the company
Sources
Zag Bio closes $80M Series A (thymus-targeted medicines) (date approx) drug-dev.com
Zag Bio closes $80M Series A (thymus-targeted medicines) (date approx) news.crunchbase.com
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Company

Thymus-targeting antibodies to restore immune tolerance in autoimmune disease

Based in
Cambridge, United States
Sector
Health
Website
zagbio.com ↗

Links

Website
zagbio.com ↗

Questions

How much has Zag Bio raised?

Zag Bio raised $80M in a Series A round, announced on 28 October 2025.

Who invested in Zag Bio?

Polaris Partners led. Investors include Polaris Partners, T1D Fund, Mission BioCapital, AbbVie Ventures, Lightspeed Ventures and Sanofi Ventures.