Brian O’Kelley On Building A .6 Billion Company Acquired By Microsoft And Creating A Protocol To Measure And Lower Carbon Emissions In Digital Supply Chains .6 Billion Company Acquired By Microsoft And Creating A Protocol To Measure And Lower Carbon Emissions In Digital Supply Chains" loading="eager" /> The entrepreneurial path is rarely a straight line, and for Brian O’Kelley, it’s been a winding road of remarkable successes, humbling failures, and surprising turns. He has built multiple companies, one of which was incredibly successful and culminated in a .6B exit. Podcast: Play in new window | DownloadSubscribe: Apple Podcasts | Spotify | TuneIn | RSS | More The entrepreneurial path is rarely a straight line, and for Brian O’Kelley, it’s been a winding road of remarkable successes, humbling failures, and surprising turns. He has built multiple companies, one of which was incredibly successful and culminated in a .6B exit. Brian’s latest venture, Scope3, has attracted funding from top-tier investors like Room40 Ventures, Google Ventures, Craft Venture, and Venrock. In this episode, you will learn: Brian O’Kelley’s entrepreneurial journey shows that failures, like being fired twice, can catalyze profound growth and innovation. His transition from technical brilliance to empathetic leadership highlights the importance of prioritizing people in building successful ventures. Brian’s foresight in real-time data optimization laid the foundation for programmatic advertising, reshaping a 00B industry. Turning down a .5B offer for AppNexus led to a .6B exit, underscoring the power of strategic decision-making in high-stakes negotiations. With Scope3, Brian aims to decarbonize digital ecosystems and align AI efficiency with environmental impact, blending business with a mission. Shifting from CTO to CEO of AppNexus, Brian learned to navigate sales, P&L, and large-scale management to build a 1,000-person global powerhouse. Brian emphasizes scaling for maximum impact in ad tech or sustainability, proving that purpose-driven businesses can thrive. SUBSCRIBE ON: Continue reading the full guide Related guidesHe Built A .6 Billion Company Acquired By Microsoft And Has Now Created A Protocol To Measure And Lower Carbon Emissions In Digital Supply ChainsDavid García Aceves On Raising $60 Million In Equity And Debt To Build A Financial App Helping Prime Customers In LatAm Eliminate Debt And Improve Their FinancesHe Raised $60 Million In Equity And Debt To Build A Financial App Helping Prime Customers In LatAm Eliminate Debt And Improve Their FinancesWhat To Do When A Major Investor Backs OutSpecial Purpose Vehicles (SPV) For Early-Stage Startup Fundraising – How It WorksHe Raised $50 Million To Provide Online Access To Therapy And Holistic Mental Healthcare Services Via A Smartphone App Read on Startup Fundraising · More articles · Browse the Library More from Startup FundraisingDavid YoungCity — Toronto CaBacked By — Chainstay Capital AdvisorsIndustry — EducationBacked By Investor — Nadia CochinwalaIndustry — FintechCity — New York NyIndustry — BiotechCity — San Francisco CaIndustry — Ai InfrastructureBradley O Harris 6409a7Seed Investors In AustinVs — Accel Vs Crosslink CapitalQuestions — Tell Me More About How To Learn Startup Fundraising A Founder S GuideVideos — Tomas Bercovich On Processing Over 7b Via A Latam Fintech Platform For Global CuWhy Silicon Valley Says No 6eabbcMost Active Media Investors In Los Angeles 2026Fintech In New York Ny — Most Backed Startups 2026 Library homeFull library indexArticlesHomeInvestor directoryFounder directoryCompany funding databaseResearch hubPricing The Startup AI Stack AI Applications Tailored For EntrepreneurshipHow Much Stock To Give Friends And Family In StartupsHow To Create A Pitch Deck NarrativeExecutive Summary Of A Business PlanPoints To Consider Before Your Company Is AcquiredWhat Are Board Written Consent AgreementsAutomotiveEdtechLogisticsMost Active SaaS Investors In Denver 2026Most Active SaaS Investors In Lehi 2026Most Active HealthTech Investors In Miami 2026Most Active Climate Investors In Berlin 2026Most Active Biotech Investors In Berkeley 2026Most Active Cybersecurity Investors In Menlo Park 2026