Treeline Biosciences

Watertown, MA · Founded 2021 · Privately Held (backing)

Developer of transformative precision medicines intended to treat cancer and other serious conditions. Treeline Biosciences is based in Watertown, MA and was founded in 2021. It is valued at about $1.3 billion as of Oct 2026, set by institutional fund marks. It has raised $1.1 billion across 2 recorded rounds; the latest was a $200 million later-stage round in Aug 2025.

PMV mark · valuation
$1.3B
Oct 2026
Priced at
—
Total raised
$1.1B
Last round
Later Stage VC
Aug 2025

Who backs Treeline Biosciences?

14 investors
InvestorType
GVVenture capital
OrbiMedGrowth equity
ARCH Venture PartnersVenture capital
T. Rowe Price Group—
Fidelity—
Casdin CapitalVenture capital
Arc Ventures (United States)—
Rock Springs CapitalHedge fund
Access IndustriesOther
Aisling CapitalVenture capital
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Treeline Biosciences investors

14 investors are on record for Treeline Biosciences, including GV, OrbiMed, ARCH Venture Partners and T. Rowe Price Group. By type, the record holds 4 venture capital firms, 1 hedge fund and 1 growth equity firm. The later-stage round in Aug 2025 drew 22 investors.

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