Private Market View

Seaport Therapeutics

Boston, MA · Founded 2020 · Privately Held (backing)

PA Mark · $/share
$18
Sep 2026
Implied valuation
$740.0M
Total raised
$329.9M
Last round
Later Stage VC
Oct 2024
What is Seaport Therapeutics worth?
$740.0Mlast known valuation

Seaport Therapeutics last raised $225.9M in its Later Stage VC (Oct 2024).

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Funding history

1 rounds
DateRoundRaisedPost-money
Oct 2024Later Stage VC$225.9M

How Seaport Therapeutics'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 Seaport Therapeutics, we compose those signals into the PA Mark — a weighted composite of 1 recent pricing inputs, decayed by age and reset on new rounds. The implied valuation multiplies the mark by shares outstanding. Full methodology →

Frequently asked

What is Seaport Therapeutics worth?
Seaport Therapeutics's implied valuation is $740.0M, based on the PA Mark composite price of about $18 per share as of Sep 2026.
How much has Seaport Therapeutics raised?
Seaport Therapeutics has raised $329.9M in total funding across 1 recorded rounds.
When did Seaport Therapeutics last raise?
Seaport Therapeutics last raised in Oct 2024 (Later Stage VC), raising $225.9M.