Companies / Siren
Siren
San Francisco, United States
Siren Socks help reduce the risk of ulcers through early detection of potential injuries.
Siren, based in San Francisco, United States, has 7 investors on file, among them A-Level Capital, Beni VC and CSC Upshot. Its site was last checked 13 Nov 2026: site answers.
Investors
7 investors on file| Investor | Evidence | Type |
|---|---|---|
| Portfolio page | Venture capital | |
| Portfolio page | Venture capital | |
| Portfolio page | Venture capital | |
| Portfolio page | Venture capital | |
| Portfolio page | Venture capital | |
| Portfolio page | Venture capital | |
| Portfolio page | Investor |
A company is shown only after its own site answers and carries its name. Sites are checked again on a schedule, because domains lapse and get bought. Round stages and dates come from Fundup AI; investor links come from portfolio pages and rounds; other facts name their source when you point at them. How we grade the data
Get Siren and its investors as data
Look up any company's investors, or any investor's full portfolio, through one API key or MCP. A free account also opens Ask AI searches and alerts when A-Level Capital adds a company.
Work email, sign-in link by email. Already have an account? Log in- Ask AI5 plain-English investor searches a day
- Full listsEvery portfolio row and two-firm overlap
- API and MCP100 REST or MCP calls a month, one key
- AlertsFollow 5 investors for portfolio and fund changes
$ curl -H "X-API-Key: YOUR_KEY" \
https://api.vcinfo.io/v1/companies/siren.care/investors
# also
GET /v1/companies/siren.care
GET /v1/companies/siren.care/news