Gray Swan raises $40M series a
Gray Swan raised $40M in series a funding, announced on 28 May 2026, led by Wing Venture Capital, Madrona, with participation from Obvious Ventures, Snowflake Ventures, Hudson River Trading, Samsung Next, Magarac Venture Partners. The round is tracked live by Fusion42 as part of the Raise fund database and the Scout startup database.
AI security startup that builds tools to safety-test AI models and agents for vulnerabilities. Gray Swan is based in United States and currently at series a stage, operating in deeptech, AI security, SaaS.
This funding event is a citable node in Fusion42's market graph: it links Gray Swan's Scout profile to the funds behind the round and to related Wire analysis, and is refreshed from public announcements as the round is confirmed or extended. It is the same live market data Arthur, Fusion42's AI co-founder, reasons over when benchmarking a founder's own raise against what is closing in the market right now.
Round details
| Company | Gray Swan |
| Stage | series a |
| Amount | $40M |
| Announced | 28 May 2026 |
| Lead | Wing Venture Capital, Madrona |
| Participation | Obvious Ventures, Snowflake Ventures, Hudson River Trading, Samsung Next, Magarac Venture Partners |
| Source | announcement ↗ |
Explore: Series A · United States
Frequently asked questions
- How much did Gray Swan raise?
- Gray Swan raised $40M in its series-a round, announced 2026-05-28.
- Who invested in Gray Swan's series-a round?
- The round was led by Wing Venture Capital and Madrona, with participation from Obvious Ventures, Snowflake Ventures, Hudson River Trading, Samsung Next and Magarac Venture Partners.
- What does Gray Swan do?
- AI security startup that builds tools to safety-test AI models and agents for vulnerabilities.
Verified 28 May 2026 · Sources: public filings