The Critical Role of Communication and Standard Definitions in Financial Modeling with John Yeldham

In this episode of Financial Modeler’s Corner, Paul Barnhurst sits down with John Yeldham, a leading expert in financial modeling and founder of Lodeum, a global online financial modeling training platform. John shares his experience leading and training teams of financial modelers across corporate and project finance, and discusses the importance of standardizing language, modular model design, and building trust in complex Excel models.

John Yeldham has 20 years of experience leading and training financial modeling teams in project and corporate finance, supporting deals and valuations for global funds, energy, and infrastructure, as well as smaller businesses. He created and refined modeling methodologies at BDO UK, Forvis Mazars, and for Lodeum, a global financial modeling training platform launching in 2026.

Expect to Learn:

• Models build trust, not just numbers
• Connect finance with operations for better decisions
• AI is a helpful junior analyst, but human judgment matters
• Scenario analysis and storytelling are essential in models

Here are a few quotes from the episode:

• "Standardizing language allows AI and people to understand and use models effectively." – John Yeldham
• "A good modeler breaks down a complex model into functional blocks; this is key to building trust and usability." – John Yeldham

John provides actionable strategies for financial modelers to improve clarity, scalability, and trust in their work while leveraging advanced Excel techniques and modular design principles. This episode is a must-listen for anyone looking to elevate their modeling skills and build reusable frameworks for complex financial analyses.

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Company: https://www.linkedin.com/company/lodeum/

LinkedIn: https://www.linkedin.com/in/johnyeldham/

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In Today’s Episode:

[00:00] – Trailer

[02:28] – Worst Model Horror Story

[05:20] – Transition to Own Business & Lodeum

[08:51] – Communication & Language Challenges in Modeling

[16:03] – Standardizing Language & AI Integration

[24:25] – Lambda Functions & Dynamic Arrays in Excel

[30:19] – Online Modeling Training Advantages

[36:43] – Favorite Excel Shortcuts

[38:22] – Most Challenging or Fun Spreadsheet Created

[39:42] – Rapid Fire: Modeling Opinions

[47:16] – Advice for Becoming a Better Modeler

[49:31] – How to Connect & Learn More