Neo launched July 20, 2026 with $100M total from Andreessen Horowitz and Bessemer Venture Partners, plus Craft Ventures and Merlin Ventures. Reporting describes a ~$75M Series A co-led by a16z and Bessemer after a ~$25M seed in 2025.

SecOps and CISO teams that need to know which agentic apps employees run, whether those agents are configured safely, and how to enforce guardrails in real time on the endpoint — not only via API telemetry after the fact.

Why raise from both a16z and Bessemer?

a16z framed the antivirus→EDR replay for agentic endpoints at seed; Bessemer’s cyber franchise and CISO advisory network help Neo win enterprise design partners at Series A. Co-leads signal category importance and reduce single-firm key-person risk for a crowded AI-security race.

How is Neo different from Onyx?

Neo’s hard bet is an endpoint sensor that can intercept agent behavior in real time. Onyx positions as a broader agent control plane across SaaS/cloud/endpoints with steer-vs-block runtime. Same mega-theme, different primary control point.

Neo’s $100M Launch: Why a16z and Bessemer Co-Led Agentic Endpoint Security

Neo emerged from stealth on July 20, 2026 with $100 million from Andreessen Horowitz and Bessemer Venture Partners — building agentic software control where it is hardest: the endpoint.

Related short take: /2026-a16z-neo-agentic-security-why-it-matters. Startup stub: /startup/neo-agentic-security.

Key facts

Company: Neo (agentic software control / endpoint AI security)
Capital: $100M disclosed at launch (~$25M seed + ~$75M Series A per Calcalist)
Leads: a16z + Bessemer (Craft Ventures, Merlin Ventures participate)
Date: July 20, 2026
Team: Nick Warner (CEO; ex-SentinelOne CRO/COO), Shlomi Salem (CPO; Unit 8200 / SentinelOne), Eran Shirazi (CTO)
HQ: Boston

Who uses Neo — and why

Buyers are CISOs and SecOps watching coding agents and workplace automation land on laptops faster than policy can keep up.

Neo’s product answers three CISO questions Bessemer highlights:

What agentic software are employees using — and should it be allowed?
What is the security posture of what we found?
How do we enforce guardrails without writing a novel of static rules?

Differentiator: Neo observes traffic, proposes policy, and lets teams extend policy in plain language via a built-in LLM — then enforces from an actual endpoint sensor, not only agentless API views.

Why now

Gartner-style projections (Bessemer cites 40% of enterprise apps embedding agents) collide with CyberArk-style findings that most enterprises lack agent identity controls. Bessemer’s own CISO advisory group reportedly flipped from “agents are not the topic” (mid-2025) to “agent security is the top concern” (early 2026). That is a fundraising climate change.

Why these two funds together

Firm	What Neo gets
a16z	Category-defining seed narrative (antivirus → EDR → agentic endpoint); American Dynamism / infra + security gravity
Bessemer	Decades of cyber GTM pattern recognition; CISO network; parallel bets (Onyx, Act) that make Bessemer a theme lead

Likely founder reason for a dual lead: enterprise security sales cycles reward two top logos on the deck, and the product needs both “category story” (a16z) and “CISO trust” (Bessemer). Warner’s SentinelOne IPO path is the commercial proof point investors underwrote.

Portfolio fit check

a16z: Continues the agentic security book already signaled in its Neo seed note; pairs with other endpoint/AI security names in the firm’s coverage.
Bessemer: Stacks with Onyx (control plane) and Act (cloud access prevention) — a layered thesis, not a single-company whim.

Practical takeaway

Founders: Endpoint sensors are hard to deploy; that difficulty is the moat if you can ship. API-only peers will pitch faster time-to-value — win on enforcement, not dashboards.
Investors: Ask for proof of policy-from-observation quality and false-positive rates on real agent workloads (Cursor/Claude Code-class tools), not only malware-style EDR benchmarks.

Sources

Neo — $100M launch (Jul 20, 2026): https://www.neo.ai/news/neo-launches-100m/
Bessemer — Neo note: https://www.bvp.com/news/neo-security-securing-ai-agents-at-the-endpoint
a16z — Investing in Neo: https://a16z.com/announcement/investing-in-neo/

Venture Capital Tracker