Terrestrial Bio

Drug Delivery · Woburn, MA · Founded 2011 · Privately Held (backing)

Developer of novel therapies designed to help in oncology care and infectious diseases. Terrestrial Bio is based in Woburn, MA and was founded in 2011. Its last reported valuation was $96.1 million in Jul 2023. It has raised $136 million across 5 recorded rounds; the latest was a $57.3 million later-stage round in Mar 2026.

Last reported valuation
$96.1M
Oct 2026
Priced at
—
Total raised
$136.2M
Last round
Later Stage VC
Mar 2026
What is Terrestrial Bio worth?
$96.1Mlast reported valuation · Oct 2026

Terrestrial Bio's last reported valuation, Jul 2023. Nothing priced has surfaced since.

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Valuation timeline

0 priced rounds · 32 daily marks since · Sep 2026 – Oct 2026
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Terrestrial Bio funding history

5 rounds
DateRoundRaisedPost-money
Mar 2026Later Stage VC$57.3M▮
Apr 2025Later Stage VC$9.0M▮
May 2024Later Stage VC$12.0M▮
Jul 2023Later Stage VC (Series B1)$11.1M▮
Jan 2023Later Stage VC (Series B)$37.0M▮
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Terrestrial Bio valuation

Terrestrial Bio's last reported valuation was $96.1 million in Jul 2023. No priced round, secondary trade or fund mark has surfaced since.

How much has Terrestrial Bio raised?

Terrestrial Bio has raised $136 million across 5 recorded rounds since 2023. The largest was a $9 million later-stage round in Apr 2025; the most recent was a $57.3 million later-stage round in Mar 2026.

Comparable companies

Comparable drug delivery names by valuation on PrivateMarketView: Zag Bio ($25 million) and Calla Lily Clinical Care ($14.4 million).

How Terrestrial Bio's valuation is determined

Private company valuations aren’t quoted on an exchange — they’re established in moments: a priced funding round sets a post-money valuation, secondary trades print at a price per share, and SEC-registered funds holding the stock report fair-value marks in their N-PORT filings.

For Terrestrial Bio, the most current credible signal sets the number and the older ones confirm it: a live secondary-market price first, then three or more recent prints, then institutional fund marks, and otherwise the last priced round, which never decays. The valuation is the last round’s post-money moved by the price change since that round, so no share count is assumed. Today it is set by last reported valuation. Question about this number? Full methodology →

Frequently asked about Terrestrial Bio

What is Terrestrial Bio worth?
Terrestrial Bio is valued at $96.1M as of Oct 2026. Terrestrial Bio's last reported valuation, Jul 2023. Nothing priced has surfaced since.
How much has Terrestrial Bio raised?
Terrestrial Bio has raised $136.2M in total funding across 5 recorded rounds.
When did Terrestrial Bio last raise?
Terrestrial Bio last raised in Mar 2026 (Later Stage VC), raising $57.3M.