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Mary Mesaglio
Distinguished VP Analyst
Gartner
Speaker Topics
- Executive Leadership
- Culture
Speaker Bio
Mary Mesaglio is a Distinguished Vice President, Analyst. Her research focuses on how to help global enterprises execute transformations in the real world, with all the human behavioural messiness that real-world change implies. She works with enterprises on how to create clear principes, how to scale change messages, how to be rigorous about the behavioural side of transformation and how to make change real.
Mary is a frequent keynote speaker for Gartner and externally. In 2023, she co-led the creation of the opening keynote for IT Symposium Xpo, delivered in five geographies across the world. The keynote focused on Generative AI and the giant leap it represents in how humans and machines interact. Recent work includes: Lighthouse Principles: Charting a Course Through the Chaos; In an AI World, We Need Better Humans; What if your Most Human-Centric Leader is a Machine? and Why WonâÂÂt They Just Change? How Behavioral Science is the Key to Transformation.
Mary is Canadian and lives in Barcelona, Spain. She is fluent in English, Spanish, French and also speaks Catalan. She is learning Japanese.
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Mary is a frequent keynote speaker for Gartner and externally. In 2023, she co-led the creation of the opening keynote for IT Symposium Xpo, delivered in five geographies across the world. The keynote focused on Generative AI and the giant leap it represents in how humans and machines interact. Recent work includes: Lighthouse Principles: Charting a Course Through the Chaos; In an AI World, We Need Better Humans; What if your Most Human-Centric Leader is a Machine? and Why WonâÂÂt They Just Change? How Behavioral Science is the Key to Transformation.
Mary is Canadian and lives in Barcelona, Spain. She is fluent in English, Spanish, French and also speaks Catalan. She is learning Japanese.
Sessions
Monday, October 20, 2025 11:30 AM - 12:00 PM EDT
Your Culture Is Shaped by the Worst Behaviors You Tolerate
Mary Mesaglio,
Distinguished VP Analyst, Gartner
As a leader, it's your responsibility to define the culture you wish to establish. When you notice behaviors that don't align with this culture, silence isn't an option — inaction equals acceptance. Culture is shaped by daily actions. So, shifting to a new culture begins with addressing small issues, like lax time management or unfulfilled commitments, and modeling desired behaviors. Culture change is a micro activity. This session guides you to initiate real change, one action at a time.
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Wednesday, October 22, 2025 10:30 AM - 11:00 AM EDT
In an Uncertain World, Focus on What’s Not Changing
Mary Mesaglio,
Distinguished VP Analyst, Gartner
In the tumult of the past year, it may seem like everything's changed, but that's not entirely true.
Many important aspects remain stable, such as your leadership principles, personal priorities and organizational goals. Now, more than ever, it's crucial to assert your team's identity — what you stand for and what makes you unique. This session offers a way to discover and communicate this identity, reinforcing it even as the world evolves. ... Show More Show Less
Many important aspects remain stable, such as your leadership principles, personal priorities and organizational goals. Now, more than ever, it's crucial to assert your team's identity — what you stand for and what makes you unique. This session offers a way to discover and communicate this identity, reinforcing it even as the world evolves. ... Show More Show Less