Brian Balfour
InvestorVenture Partner at Long Journey Ventures
San Francisco
Writes $100K – $1M checks · typically $500K
About
Brian Balfour is the Founder and CEO of Reforge. Before that, he served as VP of Growth at HubSpot, where he worked on new product initiatives including HubSpot Sales and HubSpot CRM, and earlier was an EIR at Trinity Ventures. He has co-founded four companies over the past decade, including Boundless (acquired by Valore) and Viximo (acquired by Tapjoy). Today he writes deeply researched essays on AI, product, and growth, co-hosts the Unsolicited Feedback podcast with Fareed Mosavat, and invests in and advises startups such as Drift, Loom, and Pipefy.
Contact· published on Brian's own website
Invests in
AI & Machine LearningDeep TechFintechHardwareHealthtechSaaS
Beyond investing
- Founded
- Founded/co-founded Reforge, Boundless, Viximo, reCatalyze, PopSignal, Unique Production, and Celestine Inc.
- Education
- Studied Sports Business, Statistics, and Economics at the University of Michigan.
- Communities
- Co-hosts the Unsolicited Feedback podcast with Fareed Mosavat.
- Hobbies
- Enjoys University of Michigan football games, Bud Light, and BBQ.
- Family
- A self-described midwesterner, born and raised in Michigan.
- More
- Based in San Francisco but frequently spends time in LA, Chicago, Boston, and Michigan.
From Brian's own website — common ground for a warm intro.
Experience
- ReforgeFounder/CEOcurrent2016 — presentSan Francisco Bay Area
- Long Journey VenturesVenture Partnercurrent2020 — presentSan Francisco Bay Area
- Multiple StartupsGrowth Advisor/Investorcurrent2012 — presentGreater Boston
- Harvard Business SchoolGuest Lecturer2016 — 2018
- HubSpotVP Growth, Sales Product Division2014 — 2016Greater Boston
- Trinity VenturesEIR2012 — 2013San Francisco Bay Area
- Boundless LearningCo-Founder, CMO2011 — 2012Greater Boston
- Viximo Inc.Founder, VP of Growth2007 — 2011
- Zoom InformationProduct Manager2006 — 2007Greater Boston
- Unique ProductionsFounder, President2004 — 2006Chicago, IL
- Celestine Inc.Co-Founder, CEO2003 — 2005Ann Arbor, MI
Skills & more
+12 more
Start-upsViral MarketingStrategySEMSocial NetworkingCustomer AcquisitionAngel InvestingStartup MarketingConsumer MarketingSocial Media MarketingFacebook MarketingFundraisingFrom Brian's professional profile.
Investments
Investor
Blue Bottle CoffeeDriftGametimeGrabcadHelpscoutKettle & FireLoomNamo MediaPipefyVoiceOpsWonder School
Per the investor's own website.
Writing
All posts ↗Brian Balfour has recently been writing about how AI is reshaping growth strategy, including an updated version of his Four Fits framework, a new Reforge AI Growth course, and an analysis of Atlassian's acquisition of The Browser Company as a response to AI-driven changes in enterprise software.
Announcement of Reforge's four-week AI Growth course starting October 15th, outlining its curriculum on adapting growth frameworks like the Four Fits and risk assessment for AI-driven markets.
An updated version of the author's Four Fits framework (Product Market, Product Channel, Channel Model, Model Market), explaining how AI expands problem and solution spaces and reshapes markets.
Analysis of Atlassian's $610 million acquisition of The Browser Company, arguing browsers offer a new enterprise entry point as AI agents threaten Atlassian's cross-sell model.
Colleagues at Long Journey Ventures
Network15
▶3 more connections
Investors connected to Brian in public investor directories — a warm-intro map.
Frequently asked questions
- Who is Brian Balfour?
- Brian Balfour is the Founder and CEO of Reforge. Before that, he served as VP of Growth at HubSpot, where he worked on new product initiatives including HubSpot Sales and HubSpot CRM, and earlier was an EIR at Trinity Ventures. He has co-founded four companies over the past decade, including Boundless (acquired by Valore) and Viximo (acquired by Tapjoy). Today he writes deeply researched essays on AI, product, and growth, co-hosts the Unsolicited Feedback podcast with Fareed Mosavat, and invests in and advises startups such as Drift, Loom, and Pipefy.
- Where does Brian Balfour work?
- Brian Balfour is Venture Partner at Long Journey Ventures.
- What does Brian Balfour invest in?
- Brian Balfour invests in AI & Machine Learning, Deep Tech, Fintech, Hardware, Healthtech, SaaS.
- What check size does Brian Balfour write?
- Brian Balfour typically writes checks of $100K – $1M.
- What companies has Brian Balfour invested in?
- Investments tracked here include Blue Bottle Coffee, Drift, Gametime, Grabcad, Helpscout, Kettle & Fire, Loom, Namo Media, Pipefy, VoiceOps, Wonder School.
- Where did Brian Balfour go to school?
- Brian Balfour studied at University of Michigan (B.A., Sports Management and Communication, Economics, Applied Statistics).
- What has Brian Balfour written?
- Brian Balfour has 3 tracked posts on blog.brianbalfour.com, including "AI Growth", "The Four Fits: A Growth Framework for the AI Era", "The new entry point: Why Atlassian Acquired The Browser Company".
Same school
Also attended University of Michigan516
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Shared employers
Also worked at Harvard Business School227
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Also worked at HubSpot60
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Also worked at Trinity Ventures35
+ 29 more
Also worked at Zoom Information8
+ 2 more