On3
On3 is a startup headquartered in Madison, United States, founded in 2020. It has raised at least $1.1m in outside funding, according to its filings with the US Securities and Exchange Commission (Form D), which puts it at the seed stage.
Part of the 311 Institute Global Startups Directory (311institute.com). Last updated .
Funding
On3 has raised at least $1.1m in outside funding, according to its Form D filings with the US Securities and Exchange Commission. Form D figures are a minimum: not every round is filed.
R&D ecosystem
On3 sits inside the Madison R&D ecosystem in the Global R&D Labs Directory.
Other startups in Madison
- AIQ Global
- aMBR Genomics
- Anada
- Cardamom Health
- Earth RepAIR Global
- Elephas Biosciences
- Optical X
- Protegera
- Pyran
- Realta Fusion
- Slot Check
Related
- Innovation profile of Madison
- United States: economy and key statistics
- Global Investors Directory
- All 311 Indexes
Questions and answers
What does On3 do?
On3 is classed in technology in its filings with the US Securities and Exchange Commission.
How much has On3 raised?
At least $1.1m, according to its Form D filings with the US Securities and Exchange Commission.
Where is On3 based?
On3 is headquartered in Madison, United States.
When was On3 founded?
On3 was founded in 2020.
Source record: SEC EDGAR (Form D filings).
© 311 Institute 2026. Facts from the official sources linked on this page. The selection, classification and links are the proprietary work of the 311 Institute, protected by copyright and database rights.