Drug Discovery · Watertown, MA · Founded 2022 · Privately Held (backing)
Operator of a biotech company intended to discover and develop agonist antibodies. Diagonal Therapeutics is based in Watertown, MA and was founded in 2022. It was valued at $459 million at its early-stage round in Jan 2026, the last priced event on record. It has raised $271 million across 2 recorded rounds; the latest was a $125 million Series B in Jan 2026.
PMV mark · valuation
$458.5M
Oct 2026
Priced at
its early-stage round
Jan 2026
Total raised
$271.3M
Last round
Early Stage VC (Series B)
Jan 2026
Cap table — not yet on record
Diagonal Therapeutics's share-class structure hasn't surfaced in our sources yet. Cap tables are assembled from certificates of incorporation, round filings, and disclosures as they land.
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Where does Diagonal Therapeutics's cap table come from?
Share classes are assembled from certificates of incorporation, priced-round filings, and disclosures across Diagonal Therapeutics's 2 recorded funding rounds.
