---
title: "Bay"
description: "The AI security platform building the trust layer for agentic enterprises"
canonical: "https://presspool.ai/companies/bay-io"
last-updated: "2026-11-14"
---

# Bay

The AI security platform building the trust layer for agentic enterprises [bay.io](https://bay.io)

Company record · Updated November 14, 2026 · Presspool · https://presspool.ai/companies/bay-io

## Funding

Latest announced financing: $37 million, Series A, led by Battery Ventures, announced November 10, 2026.

- **$37 million Series A**, announced November 10, 2026. Led by [Battery Ventures](https://presspool.ai/investors/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](https://presspool.ai/ai-startup-funding/week-of-2026-11-09). Sources: [Bay announcement](https://www.bay.io/blog/bay-emerges-from-stealth-with-50m-after-fortune-100-companies-used-its-platform-to-triple-autonomous-ai-agent-use-2), [BankInfoSecurity](https://www.bankinfosecurity.com/bay-security-raises-50m-to-stop-rogue-ai-agent-actions-a-33343).

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.

A company counts when an AI answer names it or cites its website. Answers vary from run to run, so each count is a dated sample.

## Related records

- Closest rounds in the [roster for November 8–14, 2026](https://presspool.ai/ai-startup-funding/week-of-2026-11-09): [Graphon Labs](https://presspool.ai/companies/graphonlabs-ai) ($35 million Series A, November 10, 2026), [Orakl Oncology](https://presspool.ai/companies/orakl-oncology-com) ($34 million Series A, November 12, 2026), [SE3](https://presspool.ai/companies/se3-ai) ($30 million Series A, November 12, 2026), [Luminal](https://presspool.ai/companies/luminal-com) ($25 million Series A, November 12, 2026), [Lumbra](https://presspool.ai/companies/lumbra-ai) ($25 million Series A, November 10, 2026), [Hatz AI](https://presspool.ai/companies/hatz-ai) ($24 million Series A, November 12, 2026).
- [Battery Ventures](https://presspool.ai/investors/battery-ventures), which led this round, also led [Shackleton AI](https://presspool.ai/companies/shackleton-ai) ($5 million seed, November 4, 2026) and [Miter](https://presspool.ai/companies/miter-com) ($40 million Series B, September 30, 2026).

## Sources

- [Bay announcement](https://www.bay.io/blog/bay-emerges-from-stealth-with-50m-after-fortune-100-companies-used-its-platform-to-triple-autonomous-ai-agent-use-2)
- [BankInfoSecurity](https://www.bankinfosecurity.com/bay-security-raises-50m-to-stop-rogue-ai-agent-actions-a-33343)

---

Presspool is a sourced record of AI startup funding. Rounds are listed because they were publicly announced, and no company pays to be listed.

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