Company
Trefoil Therapeutics, Inc.
Trefoil Therapeutics, a clinical-stage biotechnology company focused on restoring sight to people with corneal diseases
Also known as Trefoil Therapeutics
- Status
- Operatingas of 2026-09-18
- Business model
- B2B
- Headquarters
- San Diego, CA, United States
- Legal name
- Trefoil Therapeutics
- trefoiltherapeutics.com (opens in a new tab)
- LinkedIn (opens in a new tab)
- Press page (opens in a new tab)
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Record updated 28 September 2026
About
We are dedicated to restoring sight to the millions of people with corneal diseases through the advancement of therapies based on the inherent regenerative properties of naturally occurring corneal endothelial and epithelial cells.
Funding snapshot
- Total raised
- $33.3MSEC form D sum, as of 2026-09-28Source (opens in a new tab)
- Latest round
- Series A, $28M2021-12-01
Funding rounds
- Round, 2025
- $4.6M2025-04-23, SEC form D sold, 16 investors
- Round, 2022
- $12M2022-03-08, SEC form D sold, 14 investors
- Series A
- $28M2021-12-01, Company stated
- Round, 2019
- $12.6M2019-07-03, SEC form D sold, 13 investors
- Round, 2016
- $4.2M2016-12-01, SEC form D sold, 14 investors
Products
- Other
- TTHX1114 intracameral injection
- Other
- TTHX1114 topical formulation
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