Seaspire

Cambridge, MA · Founded 2018 · Privately Held (backing)

Operator of multifunctional performance colorants and an active development firm intended to treat chronic and cosmetic hair and skin conditions and replace harmful ingredients in sunscreens. Seaspire is based in Cambridge, MA and was founded in 2018. It was valued at $9 million at its seed round in Mar 2022, the last priced event on record. It has raised $4.1 million across 2 recorded rounds; the latest was a $3 million seed round in Mar 2022.

PMV mark · valuation
$9.0M
Oct 2026
Priced at
its seed round
Mar 2022
Total raised
$4.1M
Last round
Seed Round
Mar 2022
What is Seaspire worth?
$9.0MPrivateMarketView mark · Oct 2026

Valued at $9.0M at its seed round, Mar 2022. Nothing has traded since.

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Valuation timeline

0 priced rounds · 32 daily marks since · Sep 2026 – Oct 2026
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Markrounds hold their value until the next priced eventMark, today
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Seaspire funding history

2 rounds
DateRoundRaisedPost-money
Mar 2022Seed Round$3.0M▮
Jan 2020Debt$600K▮
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Seaspire valuation

Seaspire was valued at $9 million at its seed round in Mar 2022. That is the last priced event on record: no secondary trade or institutional fund mark has moved the figure since.

How much has Seaspire raised?

Seaspire has raised $4.1 million across 2 recorded rounds since 2020. The largest was a $600,000 debt round in Jan 2020; the most recent was a $3 million seed round in Mar 2022.

Seaspire has filed 2 Form Ds with the SEC since 2020, most recently in Apr 2022 ($3 million sold to 7 investors).

How Seaspire'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 Seaspire, 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 its last priced round. Question about this number? Full methodology →

Frequently asked about Seaspire

What is Seaspire worth?
Seaspire is valued at $9.0M as of Oct 2026. Valued at $9.0M at its seed round, Mar 2022. Nothing has traded since.
How much has Seaspire raised?
Seaspire has raised $4.1M in total funding across 2 recorded rounds.
When did Seaspire last raise?
Seaspire last raised in Mar 2022 (Seed Round), raising $3.0M.