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Stairwell

Stairwell

Private
Sunnyvale, CaliforniaCybersecurityhttps://stairwell.com/

Last Round

Series B

Oct 11, 2022

Total Funding Raised

$69.5M

Momentum

Top 50%

of companies Caplight tracks

Company Overview

Stairwell is a cybersecurity company that provides a continuous intelligence, detection, and response platform designed to help security teams identify and respond to threats by offering deep visibility into internal and external data sources.

Sector

Cybersecurity

Verticals

Threat Intelligence, Cloud Security, Incident Response

Business Model

B2B

Customer Profile

Subscription SaaS, Usage-Based SaaS

AI Layer

Application

Keywords

threat detectionmalware analysiszero-day threatsthreat huntingthreat intelSOCsecurity operations centermalware huntingalert fatigueMSSPmanaged security service providerautomated triagecybersecurity platformsecurity automationincident response

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Caplight Momentum Score

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Stairwell Comparables

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Stairwell comparables — related companies by embedding similarity
CompanySimilarityMarket Cap
Intezer
86%
VMRay
76%
Mastercard
74%

Stairwell Funding Rounds

Historical fundraising activity

Data table
RoundDateAmount RaisedValuationInvestorsSources
Series BOct 11, 2022
Series ASep 21, 2021
SeedNov 5, 2020

Key People

Founding team and executive leadership

Emmy Linder

Chief Executive Officer

Executive Team

Stairwell Investors

Notable investors and investment history

Stairwell investors
InvestorRounds
S32Series B
Gradient VenturesSeries B, Series A, Seed
Bain Capital VenturesSeries A
Allen & CompanySeed
Upfront VenturesSeed
Lux CapitalSeries B
Allen & Company LLCSeed

Market signals

Structured signals derived from secondary market and firmographic data.

  • Apr 6, 2026

    Added NJ Nature as a new customer.

  • Jul 29, 2025

    Emmy Linder appointed as the new CEO.

Stairwell Filings

SEC and related filings with document metadata.

Data table
TypedDateAmount OfferedAmount SoldFillingPagesDownload
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Stairwell Filings

SEC and related filings with document metadata.

Frequently Asked Questions

Common questions about Stairwell's valuation, stock price, and market status.

Firmographic Details

HeadquartersSunnyvale, California
Employee Range57
Year Founded2019
Last FundingOct 11, 2022

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