Fundz

Cyber startup Bay raises $37M in Series A led by Battery Ventures. The AI agent security platform will use funds to expand its 35-person team across product, engineering, sales, and marketing.

PRIVATENov 11, 2026

Amount Raised

$37 Million

Round Type

Series A

Artificial IntelligenceCyber Security

Investors

Micron VenturesYL VenturesStrikerAssaf RappaportJeetu PatelManoj ApteBattery Ventures

Description

Bay, a cyber startup focused on securing AI agents, has completed a $37 million Series A funding round led by Battery Ventures, with participation from Micron Ventures. The round brings the company's total investment to $50 million since its founding nine months ago. The company plans to use the funding to expand its 35-person workforce, with focus on product, engineering, sales, marketing, and customer teams in the US and Europe. Bay's platform monitors AI agent actions in real time and decides whether to allow, block, or escalate actions based on organizational security policies.

Quick answer

Bay raised $37 Million in a Series A round, dated November 11, 2026. Investors: Micron Ventures, YL Ventures, Striker, Assaf Rappaport, Jeetu Patel, Manoj Apte and Battery Ventures.

How much did Bay raise?
Bay raised $37 Million in a Series A round on November 11, 2026.
Who invested in Bay?
Micron Ventures, YL Ventures, Striker, Assaf Rappaport, Jeetu Patel, Manoj Apte and Battery Ventures are named as investors in this round.

Source: Fundz verified event record.

Who else raised in Cyber Security and Artificial Intelligence around the same time

Companies in the same sectors as Bay that raised within 45 days of this round, from Fundz verified event records.

  • Daylight raised $80M (Series B) on November 11, 2026.
  • Daylight Security raised $80M (Series B) on November 10, 2026.
  • Applied Compute raised $350M on November 4, 2026.
  • CyberKord raised $3M (Pre-Seed) on November 3, 2026.
  • AvalonX raised $10M on October 30, 2026.
  • Northstar Security raised $7M (Seed) on October 28, 2026.

Who to call at Bay, and when

A new round usually means Bay is about to hire and buy. The teams that reach out first get the meeting.

  • An alert the day Bay raises, hires an executive or expands, scored against what you sell
  • The decision-makers there, with verified emails
  • Who you already know at Bay, from your own LinkedIn network

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Company Information

Company

Bay

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Funding Insights

What this usually means
Typical timeline to Series B
Series A companies typically raise their next round in 10-18 months

Bay raised. Fundz records a round at a median of 3.6 minutes from the SEC filing, with the decision-maker attached.

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