Zag Bio: Funding, Investors & Team (Sep 2026)
Zag Bio is a biotechnology company that designs thymus-targeting bifunctional antibody medicines to treat and prevent autoimmune diseases.
Zag Bio has raised $80.0M across 1 funding round on record, the most recent a Series A of $80.0M announced in Oct 2025.
That round is above the $15M median round size for Biotechnology companies tracked on FundedIQ over the last two years.
Zag Bio Company Profile and Key Stats
Latest funding round on record: Oct 2025.
Zag Bio Funding Rounds
Zag Bio Founders and Leadership Team
Contact details for the Zag Bio team: 1 of 1 has an email address on file, 1 has a LinkedIn profile.
Start 14-day free trial →Zag Bio Funding Compared to Other Biotechnology Startups
Zag Bio's latest round of $80.0M is above the median round in Biotechnology. Medians cover the last 24 months of disclosed rounds.
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Zag Bio Funding FAQs
What does Zag Bio do?
Zag Bio is a biotechnology company that designs thymus-targeting bifunctional antibody medicines to treat and prevent autoimmune diseases.
How much funding has Zag Bio raised?
Zag Bio has raised $80.0M across 1 round on record. The most recent is a Series A of $80.0M announced in Oct 2025.
When did Zag Bio last raise funding?
Zag Bio's most recent funding round on record is a Series A of $80.0M, announced in Oct 2025.
Who is the CEO of Zag Bio?
Jason Cole is listed as CEO at Zag Bio.
Where is Zag Bio headquartered?
Zag Bio is based in Cambridge, United States.
How many employees does Zag Bio have?
Zag Bio is in the 11-50 employee band.
How does Zag Bio's funding compare to other Biotechnology startups?
Zag Bio's latest round of $80.0M is above the $15M median round size for Biotechnology companies on FundedIQ across 16 tracked companies over the last two years.
About FundedIQ's Zag Bio Funding Data
FundedIQ tracks announced funding rounds and refreshes this profile every week. Round dates, stages and amounts are normalised to a single format, converted to US dollars, and de-duplicated: two records of the same round announced days apart are merged, and two genuinely different rounds are kept apart on the amounts they disclose. Amounts shown are the disclosed figures only — a round announced without a number is listed and excluded from the total rather than estimated.
Employee counts are reported bands, not exact headcounts. Founder and executive names carry the job title on record. Anything we do not hold for Zag Bio is left off this page rather than filled in.
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