Behind the Site

Linear

linear.app

Project and issue-tracking software built for high-performance software teams and product development.

  • Software / SaaS
  • active
  • Founded 2019
  • Researched Sep 2026
Confirmed
Age7 yearsDomain registered 2018
Confirmed
Based inSan Francisco, California
Unverified
Employees100-280Aggregator estimates vary widely (Getlatka: ~118, Pitchbook: ~141, Tracxn: ~280), all dated 2026; no official headcount disclosed by the company
Confirmed
Funding$134M raisedSeed $4.2M · Series A $13M · Series B $35M · Series C $82M
Confirmed
PlatformsWeb, iPhone, Android, Mac, Windows, API
Confirmed
Founders3 foundersKarri Saarinen, Tuomas Artman, Jori Lallo

The story

Linear was founded in San Francisco in 2019 by designer Karri Saarinen and engineers Tuomas Artman and Jori Lallo, who had worked at companies like Airbnb, Coinbase, and Uber. It grew from a $4.2M Sequoia-backed seed round into an $82M Series C at a $1.25B valuation in 2025, and now positions itself as an AI-era 'system for product development' used by companies such as OpenAI, Ramp, and Vercel.

Timeline

  1. Founded2019

    Company founded

    Founded in San Francisco by Saarinen, Artman, and Lallo

  2. FundingNov 2019

    Seed round raised

    $4.2M seed led by Sequoia Capital

  3. FundingDec 2020

    Series A raised

    $13M led by Sequoia Capital

  4. FundingSep 2023

    Series B raised

    $35M led by Accel

  5. New platformSep 2024

    Linear Mobile launched

    Native iOS and Android app released

  6. FundingJun 2025

    Series C at $1.25B

    $82M led by Accel, valuation $1.25 billion

Founders

  • Karri Saarinen

    Co-founder & CEO

    Previously Head of Design at Coinbase; earlier design roles at Airbnb

    linkedin.comcrunchbase.com

  • Tuomas Artman

    Co-founder

    Co-founded Linear in 2019; prior roles at high-growth tech companies

  • Jori Lallo

    Co-founder

    Co-founded Linear in 2019; listed as a producer on Linear Mobile

17 sourcesEvery fact above links back to these.
  1. Linear - Crunchbase Company Profile & Fundingcrunchbase.com
  2. Karri Saarinen - Crunchbase Person Profilecrunchbase.com
  3. Karri Saarinen - Co-Founder, CEO at Linear (LinkedIn)linkedin.com
  4. Linear Orbit Inc. - Automation Company | Automation Atlasautomationatlas.io
  5. Inside Linear: Why craft and focus still win in product buildingreview.firstround.com
  6. Linear revenue, valuation & funding | Sacrasacra.com
  7. Atlassian competitor Linear raises funding at $1.25-billion valuationfinance.yahoo.com
  8. Building our way: Announcing our Series Clinear.app
  9. Linear raises $13M in Series A funding from Sequoia Capitallinear.app
  10. Linear's Next Chapter: Announcing our $4.2M Seed Roundmedium.com
  11. Linear App Revenue 2025: $100M ARR, $1.3B Valuation | Latkagetlatka.com
  12. Linear Company Profile | PitchBookpitchbook.com
  13. Linear - 2026 Company Profile, Team, Funding & Competitors | Tracxntracxn.com
  14. Linear Mobile – Available for iOS and Androidlinear.app
  15. Download Linearlinear.app
  16. Domain RDAP registration record for linear.app
  17. Linear Mobile on the App Store (seller: Linear Orbit, Inc.)apps.apple.com
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