Crimson was founded by Mark Feldner, David Strömbäck in 2025.

Who are Crimson's investors?

Crimson's investors include Y Combinator, Twenty Two Ventures, Eight Capital, Acquisition.com, Amino Capital, Eight Capital, Progressive Ventures, Sand Hill Angels and 3 more.

How much funding has Crimson raised?

Crimson has disclosed $2.5M raised across 1 of its 2 known rounds.

Where is Crimson headquartered?

Crimson is headquartered in London, GB.

Crimson

YC X25

London, GB · Founded 2025 · 6 employees · 13 known investors

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Crimson uses AI to automate document review, evidence sorting, and case file organization for litigation and arbitration teams. The platform is designed to free lawyers from tedious administrative tasks so they can focus on case strategy and advocacy.

Also known as Crimson LegalTech Inc.

AI & Machine Learning Enterprise Software LegalTech SaaS Legal AIUnited KingdomEurope

Founders & leadership· Y Combinator alumni (X25)

Crimson was founded in 2025 by Mark Feldner and David Strömbäck.

Mark Feldner CEOMark Feldner worked as a litigator at a major law firm before founding Crimson, which builds AI tools for litigation workflows.

David Strömbäck CTODavid Strömbäck is the founder of Crimson, an AI platform that automates document review and case file organization for litigation and arbitration teams.

Amine Amor

Investors · 13

Y Combinator✓ confirmed by CrimsonSan Francisco · $500K

How we know: the company's own site · the Y Combinator directory · funding news · lawfuel.com · open dataset · 5k.vc investor directory · Not right? Tell us

Twenty Two Ventures✓ confirmed by CrimsonPalo Alto · $50K – $250K

How we know: the company's own site · lawfuel.com · Y Combinator's founder network · Not right? Tell us

Eight Capitallisted by Eight CapitalNorwalk

How we know: Y Combinator's founder network · eightcapital.com · Not right? Tell us

Acquisition.comreported

How we know: Y Combinator's founder network · Not right? Tell us

Amino CapitalreportedPalo Alto · $100K – $10M

How we know: lawfuel.com · Y Combinator's founder network · Not right? Tell us

Eight CapitalreportedCaguas

How we know: lawfuel.com · Not right? Tell us

Progressive VenturesreportedPalo Alto

How we know: lawfuel.com · Y Combinator's founder network · Not right? Tell us

Sand Hill AngelsreportedMenlo Park · $50K – $2M

How we know: Y Combinator's founder network · Not right? Tell us

SAV (Scale Asia Ventures)reportedPalo Alto

How we know: Y Combinator's founder network · Not right? Tell us

Symphony Venturesreported

How we know: lawfuel.com · Y Combinator's founder network · Not right? Tell us

Team IgnitereportedFolsom · $15M

How we know: Y Combinator's founder network · Not right? Tell us

Also in the syndicate · 2

ACQ VenturesScale Asia Ventures

Funding

SEC filings, press & company announcements

$2.5M disclosed across 1 of 2 rounds · 2026

$2.5Mseed roundMay 2026 · 5 sources
Y Combinator (lead), ACQ Ventures, Amino Capital, Eight Capital, Progressive Ventures, Scale Asia Ventures, Symphony Ventures, Twenty Two Ventures
Source ↗

Source: company announcements and press reports — follow each round's link for the claim.

Related companies · 5

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PointOnePointOne automates administrative and time-tracking tasks for large law firms to improve operational efficiency. The company provides data insights to help legal firms make data-driven decisions around staffing, pricing, and innovation as the industry adapts to AI.

Cognition IPCognition IP provides fixed-fee intellectual property protection services for fast-growing enterprises and startups, combining legal expertise with technology to handle patent, trademark, and copyright matters.

Pearson LabsPearson Labs develops AI agents that automate corporate transactions for law firms, helping them manage large business operations more efficiently and reduce delivery costs.

AbelAbel provides independent reviews of UK money management apps and budgeting tools, helping users in their 20s to 40s evaluate financial apps through hands-on testing and transparent reporting of fees, features, and safety practices.

Companies working in the same space as Crimson.

Legal entities · 1

corporate structure

Crimson LegalTech Inc.

In the news

Crimson Raises $2.5M Seedthesaasnews.com · May 2026

Crimson Raises $2.5M in Seed Fundingfinsmes.com · May 2026

YC-Backed Crimson Raises Oversubscribed $2.5M Seed Round to Bring Case Intelligence to Litigation | Crimsoncrimson.law · May 2026

Crimson: The AI Associate for Litigation Lawyersycombinator.com · May 2025

Frequently asked questions

What does Crimson do?: Crimson uses AI to automate document review, evidence sorting, and case file organization for litigation and arbitration teams. The platform is designed to free lawyers from tedious administrative tasks so they can focus on case strategy and advocacy.
Who founded Crimson?: Crimson was founded by Mark Feldner, David Strömbäck in 2025.
Who are Crimson's investors?: Crimson's investors include Y Combinator, Twenty Two Ventures, Eight Capital, Acquisition.com, Amino Capital, Eight Capital, Progressive Ventures, Sand Hill Angels and 3 more.
How much funding has Crimson raised?: Crimson has disclosed $2.5M raised across 1 of its 2 known rounds.
Where is Crimson headquartered?: Crimson is headquartered in London, GB.