Our Story

Over the last 25 years, Mary Stelletello has worked in the nonprofit, philanthropic, and corporate sectors. She led five different nonprofit organizations focused on children and youth development, domestically and internationally. Mary began her consulting career in 2007 with La Piana Consulting based in the San Francisco Bay Area.

Mary founded Vista Global Coaching & Consulting in 2010. Vista Global became Wisconsin’s first certified B Corp in 2012, partnering with organizations and individuals to make meaningful change in the world. She has worked with more than 200 organizations and individuals in 30 countries across six continents fostering organizational transformation.

Other accomplishments include an International Fellowship in Community Development sponsored by the W.K. Kellogg Foundation and participation in the Salzburg Seminar in Austria on the topic of Engaging Youth in Community Development. Mary is a contributor to The Leadership Challenge Activities Book, by James Kouzes and Barry Posner. She is a co-author of the eBook, Proactively Plan for the Inevitable: A Guide to Leadership Transition and Succession.

Mary holds an MA in Latin American Studies and an MBA in International Management from the University of New Mexico. She received a BA in Political Economics with a minor in Spanish from the University of California, Berkeley. Mary is a PCC credentialed coach through the International Coach Federation and a Conversational Intelligence Enhanced Practitioner. She is proficient in Spanish and speaks some Portuguese.

Mary’s Thoughts on Finding Her Purpose…

My leadership journey began when I was 9 years old, as the first girl to play little league in a town outside Chicago. At age 21, I traveled to Ecuador as a volunteer with Amigos de las Américas. Since then, I have spent time in 12 Latin American countries, deepening my connection to the Latin American culture. My husband and I now spend four months every year living in Oaxaca, Mexico. I currently serve on the board of Puente a la Salud Comunitaria, an organization based in Oaxaca.

“My work has led me on paths from the rural areas of Hawaii to the cities of Macedonia and South Africa. I have worked with community-based organizations, multinational corporations, and United States Congressional members. These experiences have shaped the lens that I have on the world and the work that I do.

“The change we want to see in the world starts with how we engage adults with our young people today. Not only do young people need the opportunity to develop and demonstrate their greatness, adults need to build their confidence in young people to lead. My approach to my work incorporates both aspects of this audacious social change agenda.”


Vista Global collaborates with like-minded organizations committed to using business as a force for positive change in the world. Together, we can have a greater impact within our communities, catalyzing the change we wish to see.


Mary is a certified professional Co-Active coach and certified Conversational Intelligence® coach.  

Conversational Intelligence® is a revolutionary body of work leveraging the power of neuroscience to create profound and lasting transformation for individuals, teams and entire organizational cultures. Combining science and intuition, Conversational Intelligence (C-IQ) aspires to shift our world from I-Centric to WE-Centric and architect Conversational Transformation on a neuro-chemical level.

She is PCC credentialed with the International Coach Federation.  She has completed more than 500 hours of experiential training with master coaches. Mary uses these skills with executives, social entrepreneurs, and rising leaders to strengthen their abilities and skills to guide organizations to excellence.




Upcoming Events:

We offer webinars, presentations, and workshops on a variety of topics. Most are free or at low cost. We would love for you to join us!

Past Events:

Iso-Learning Series: Business as a Force for Good: Building Purpose into Your Business DNA

May 21, 2020

Odyssey Plan Webcast: The First Step in the Next Phase of Your Life

September 25, 2019

Webcast and Live Chat: Conversational Intelligence 

September 18, 2019

Social Enterprises and Entrepreneurship, Connections, and Cocktails

September 12, 2019

Webcast and Live Chat: Cultural Competence Across Borders

September 11, 2019

Webcast and Live Chat: Personal Strengths/Values

September 4, 2019

Odyssey Plan Webcast: The First Step in the Next Phase of Your Life

August 28, 2019

Webcast and Live Chat: Conversational Intelligence 

August 21, 2019

Webcast and Live Chat: Cultural Competence Across Borders

August 14, 2019

Webcast and Live Chat: Personal Strengths/Values

August 7, 2019

Cardinal Stritch University Leadership Institute

June 24, 2019

Milwaukee May 2019 Connect-Doyenne Group

May 8, 2019, Milwaukee, WI

Business as a Force for Good: What’s a B Corp?

April 11, 2019, Madison, WI

Impact of Cultural Identity on Creating Awareness in Coaching Webinar

April 8, 2019

Understanding Certified B Corps Workshop

September 18, 2018, Milwaukee, WI

ED & Board Member Training-Collaboration & Consolidation

September 13, 2018, Appleton, WI

Cardinal Stritch University Mission Fuel Program

May 2018, Milwaukee, WI