Drug Delivery · Cambridge, MA · Founded 2022 · Privately Held (backing)
Operator of a therapeutic platform intended to offer precise medicines for immune-mediated diseases. Zag Bio is based in Cambridge, MA and was founded in 2022. Its last reported valuation was $25 million in Jul 2023. It has raised $102 million across 1 recorded round; the latest was an $80 million Series A in Oct 2025.
Last reported valuation
$25.0M
Oct 2026
Priced at
—
Total raised
$102.0M
Last round
Early Stage VC (Series A)
Oct 2025
Team — not yet on record
No current team members for Zag Bio are on record yet. People surface from round filings, company disclosures, and coverage sessions.
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·The complete investor list: 17 names
·Watch Zag Bio: the Monday email on marks, rounds and moves
