Trefoil Therapeutics

San Diego, CA · Founded 2013 · Privately Held (backing)

Developer of corneal therapeutics designed to facilitate the treatment of ophthalmic diseases. Trefoil Therapeutics is based in San Diego, CA and was founded in 2013. It was valued at $59.5 million at its later-stage round in May 2025, the last priced event on record. It has raised $49.7 million across 4 recorded rounds; the latest was a $4.6 million seed round in Apr 2025.

PMV mark · valuation
$59.5M
Oct 2026
Priced at
its later-stage round
May 2025
Total raised
$49.7M
Last round
Seed Round
Apr 2025

Trefoil Therapeutics key facts

as of Oct 2026
  • Developer of corneal therapeutics designed to facilitate the treatment of ophthalmic diseases.
  • Trefoil Therapeutics is valued at approximately $59.5M as of Oct 2026, set at its later-stage round, May 2025; nothing has traded since, per PrivateMarketView’s mark.
  • It has raised $49.7M across 4 recorded rounds; the latest was Seed Round ($4.6M) in Apr 2025.
  • Notable investors include National Institutes of Health, CONNECT(San Diego), Correlation Ventures, Hatteras Venture Partners, FemHealth Ventures — 12 tracked in total.
  • Trefoil Therapeutics has filed 5 Form Ds with the SEC since 2016, most recently May 2025 ($4.6M sold to 16 investors).
  • Status: Privately Held (backing).
PrivateMarketView mark
LOW confidence
$59.5M

Valued at $59.5M at its later-stage round, May 2025. Nothing has traded since.

set by its last priced roundas of Oct 2026question about this number?
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Trefoil Therapeutics funding rounds

4 rounds
Apr 2025Seed Round$4.6MSEC filing▮
Mar 2022Early Stage VC$12.0MSEC filing▮
Jul 2019Early Stage VC$12.6MSEC filing▮
Dec 2016Seed Round$4.2MSEC filing▮

Trefoil Therapeutics valuation

Trefoil Therapeutics was valued at $59.5 million at its later-stage round in May 2025. That is the last priced event on record: no secondary trade or institutional fund mark has moved the figure since.

How much has Trefoil Therapeutics raised?

Trefoil Therapeutics has raised $49.7 million across 4 recorded rounds since 2016. The largest was a $4.6 million seed round in Apr 2025.

Trefoil Therapeutics has filed 5 Form Ds with the SEC since 2016, most recently in May 2025 ($4.6 million sold to 16 investors).

Trefoil Therapeutics investors

12 investors are on record for Trefoil Therapeutics, including National Institutes of Health, CONNECT(San Diego), Correlation Ventures and Hatteras Venture Partners. The seed round in Apr 2025 drew 16 investors.

About Trefoil Therapeutics

Developer of corneal therapeutics designed to facilitate the treatment of ophthalmic diseases. The company's therapy is focused on leveraging its engineered fibroblast growth factor-one protein technology platform to develop first-in-class regenerative pharmacologic treatments for corneal diseases and help regenerate the endothelial cell layer and eliminate the symptoms associated with this condition that leads to the loss of vision, enabling ophthalmologists to treat patients with severe corneal endothelial diseases and epithelial disorders.

Sector
Healthcare
HQ
San Diego, CA, United States
Founded
2013
Employees
10
Ownership
Privately Held (backing)

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