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Stairwell

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A new cybersecurity company that seeks to empower any team to defend against every attacker

Sunnyvale, United StatesFounded 2019Cybersecurity
Valuation $250–500M Last recorded · 2022
Headcount <100 Current team size
Total funding $50–100M Disclosed equity funding
Unlock exact values This page shows ranges. Dealroom has the exact numbers for Stairwell and the history behind them.

About Stairwell

Stairwell is a cybersecurity startup that operates in the digital security market, providing automated threat detection and response solutions. The company's primary offering is a cloud-based platform that uses static and dynamic analysis at the binary level to automatically detect threats. This technology allows businesses to build queries and utilize a library of over 4,200 YARA rules to identify patterns across all their files, effectively hunting for threats at the source of an attack.

Stairwell's platform is designed to serve a wide range of clients, from small businesses to large enterprises, by eliminating endpoint constraints and providing continuous analysis that doesn't slow down their systems. This means that the platform can detect threats without any limitations on scale or impact to the organization.

The company's business model is centered around empowering security teams and reducing the time and costs associated with investigations, threat assessments, and both threat hunting and incident response efforts. By providing visibility and confidence in an organization's security, Stairwell aims to render expensive threat assessments obsolete.

Stairwell generates revenue by charging its clients for access to its platform and its suite of security tools. The platform's automated malware analysis and reference data allow clients to detect and triage threats with greater confidence, speed, and understanding.

In summary, Stairwell is a cybersecurity startup that provides automated threat detection and response solutions to businesses of all sizes. Its cloud-based platform uses advanced analysis techniques to hunt for threats, empowering security teams and reducing security costs.

Source: Dealroom company data

At a glance

Status
Operational
Founded
2019
Headquarters
Sunnyvale, United States
Employees
57
Open positions
2
Dealroom signal
30.5/100
Industry
Security
Sub-industry
Data protection, Device security & Antivirus
Sector
Cybersecurity
Client focus
b2b

Funding history

5 recorded events

Company financing events and reported valuations.

Deal typeDateAmountValuationInvestorsSource
SERIES BOther financing Oct 2022 $45M $180M Accel · Sequoia · Michael Ovitz · Eric Schmidt ↗
SERIES AOther financing Sep 2021 $20M $80M Sequoia · Accel —
Showing the latest 2 of 5 recorded eventsBook a demo for the full funding history →

Growth signals

Stairwell website traffic

Latest recorded traffic for Stairwell is 13K monthly website visits, up 80.6% over the last three months. Stairwell's team declined 3.4% over the past year.

Latest monthly visits13K 3-month web change+80.6% 1-year team growth-3.4%
Summary metrics are public; monthly history is available with a demoCompare with peers →

Investments and acquisitions

Capital deployed

Recent portfolio relationships for companies that also act as investors or acquirers.

Investors

8 investors on the cap table

From Dealroom's funding and investor records, grouped by the round each investor first entered.

Seed3 investors entered at this stage

Series A5 investors entered at this stage

Team profiled 9 named & role-tagged
Founders Hidden — book a demo/100 quality score
Key operators 3 quality Hidden — book a demo/100
Potential founders Hidden — book a demo likely future founders
Startup mafia Hidden — book a demo alumni-founded startups
Talent movements Hidden — book a demo in · Hidden — book a demo out past 12 months

Source: Dealroom Talent Intelligence.

Global footprint

Workforce and web traffic by country
Workforce by country
1 countries with
team presence
🇺🇸 United States100%
1 country shown

Market sentiment

Posts on X, past 7 days

An AI-synthesised read of the highest-engagement posts about Stairwell on X, ranked by likes and reposts, corporate channels excluded.

Reading the room on X — pulling top posts and synthesizing themes…

Source: X recent search ranked by engagement (likes + retweets) · Synthesis by Claude · Cached for 1 hour

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