Bay
The AI security platform building the trust layer for agentic enterprises bay.io
Funding
- $37 million Series A, announced November 10, 2026. Led by Battery Ventures. Bay's $50 million total includes this $37 million Series A and a previously undisclosed $13 million seed led by YL Ventures and Striker. Micron Ventures, M12 and Assaf Rappaport also joined the Series A. Listed in the AI startup funding roster for November 8–14, 2026. Sources: Bay announcement, BankInfoSecurity.
Of the 90 Series A rounds with exactly stated amounts in dollars on Presspool's weekly rosters since September 21, 2026, Bay's $37 million is the 20th largest; their median is $20.85 million.
Whether AI names Bay
- Machine Relations Index: Not cited in any Machine Relations Index answer, May 10, 2026 to November 14, 2026.
Related records
Closest rounds in the roster for November 8–14, 2026: Graphon Labs ($35 million Series A, November 10, 2026), Orakl Oncology ($34 million Series A, November 12, 2026), SE3 ($30 million Series A, November 12, 2026), Luminal ($25 million Series A, November 12, 2026), Lumbra ($25 million Series A, November 10, 2026), Hatz AI ($24 million Series A, November 12, 2026).
Battery Ventures, which led this round, also led Shackleton AI ($5 million seed, November 4, 2026) and Miter ($40 million Series B, September 30, 2026).