Convene Staff & Executive Team
Marketing and Chair Development Consultant
Paul is a Convene Chair as well as a marketing and chair development consultant to Convene. His diverse background as a successful corporate executive, business owner, men’s ministry pastor, and published author gives him a well-balanced and robust set of experiences to draw from as he mentors and develops Christian business leaders in his roles at Convene.
Paul is originally from New England and spent most of his younger years on Long Island just outside of New York City. He attended The Ohio State University for his undergraduate degree and then attended Duke Business School for post-graduate studies. He moved to Orange County, California in 1981 where he currently resides with his beautiful wife Margaret. They are blessed with 7 children and 5 grandchildren.
Prior to joining Convene, Brenn worked in the Marketing Communications department at George Fox University for four years in a variety of creative roles. He served their team as a web developer, designer, photographer and videographer. In addition to his work at George Fox, Brenn worked as a freelance digital artist. Brenn graduated with a degree in Marketing from George Fox University.
Brenn lives in Fullerton, CA with his wife, Ashley, who is attending Rosemead School of Psychology at Biola Univeristy. In their free time they enjoy traveling, hiking and spending time at the beach.
Sheryl has more than 20 years leadership experience, and over the course of 13 years served in the roles of President, CFO and COO for a start-up software company, helping to grow sales to $20 million, and eventually negotiating its sale on behalf of the company owners.
Sheryl’s passion for business and serving others led her to start a consulting practice where she has worked with numerous organizations, assisting them with strategic planning, implementation and business process review. She also serves on the Board of Directors for a privately held software company and a non-profit community based youth sports organization.
Sheryl and her husband, Don, worship at Calvary Chapel East Anaheim. They have one daughter who is currently attending Biola University.
Manager, Community Engagement and Accounting
Before coming to Convene, Nolan graduated from Corban University in Salem, OR where he received a Bachelor’s Degree in Business Administration with a Minor in Biblical Studies. While attending Corban, he served as the captain of the Men’s Soccer Team and worked at a local bank in town. Working at multiple financial institutions, in a variety of different roles, Nolan brings to Convene a passion to serve others.
Nolan and his wife, Hilary, attend church at EV Free Fullerton, in Fullerton, CA. In their free time, they enjoy traveling, attending sporting events, and spending time with friends and family.
CEO & Board Member
Greg Leith is the CEO of Convene. He was born in Canada and lived in all four corners of North America. His career spans over 35 years of senior leadership roles in corporate, non-profit and academic sectors. Recently, he served as Director of Strategic Alliances for 13 years at Biola University in California.
Greg has served the persecuted church with food, brought relief and long term jobs to Orissa, India, assisted mission agencies in China with strategy and helped envision a School of Journalism in Haiti. He and Shelley, his wife of 38 years, have crisscrossed Canada for over a decade speaking on marriage and parenting for FamilyLife helping thousands of marriages.
Greg was a senior executive for 20 years with the $9 billion ServiceMaster Company, serving in various leadership capacities. He was Vice President of Arrow Leadership and Director of Leadership Development for Christian Leadership Alliance, creating learning experiences for the most influential Christian organizations in the world. Married for over 38 years to his wife Shelley, he’s the father and friend to five thriving young adults.
Leader Learning Initiatives
Helen is a significant voice in the national workplace faith movement. She is currently the Director of the Talbot Seminary Center for Faith, Work and Economics at Biola University and is a faculty member in the Crowell School of Business MBA program at Biola where she teaches leadership and innovation. Helen holds a Masters in Organizational Leadership from Biola University and a Masters in Biblical and Theological Studies from the Talbot School of Theology at Biola. She started her business career with AT&T and served as Vice President of a half billion-dollar branch at age 35. From her joint platforms at Biola University and Saddleback Church, she co-founded and directed the 2,000+ member workplace small group ministry. Helen recently served as Vice President on the National Board of Directors for the Association for Strategic Planning and previously was an officer on the Board of Directors for The YMCA of Orange County.
Marc has more than 30 years of leadership experience and served as President of ProSound & Stage Lighting for 10 years. ProSound is a company utilizing catalog and web channels for sound and lighting products delivered to schools, churches, military and the musician/dj market. He grew that organization into a recognized national niche leader and sold it in 2005. Today he maintains minority positions at ProSound and Convene.
Marc left ProSound at the end of 2002 to join Convene. He serves in business development where he focuses on finding excellent group leaders and helping them launch groups across the nation.
Marc came to Christ in 1987 and worships at North Hills Church in Brea, CA where he leads the men’s ministry. Marc is married to Kasey. They have three children and a desire to live the abundant life of followers that pray, listen and obey our Lord Jesus Christ.
VP of Business Development and Strategic Alliances
Brett has served in a variety of key executive roles including most recently as Global COO of Biblica, Inc., The International Bible Society where he had direct reports including the Global CFO, VP of IT/ Digital Strategy, and VP Operations.
Additionally, Brett has been both an entrepreneur as an owner of a marketing and advertising organization, CMS, that served both for-profit and non-profit clients. He has also operated a boutique consulting firm serving organizations ranging from startups to Fortune 100 clients. Services included applications of best business practice including: C-Suite staff coaching, strategic plan design, HR issues, corporate culture and financial assessments and turn-around analysis and implementation. He has also served as SR. VP of Sales and Marketing with a division of Fortune 60 organization, ConAgra Foods.
Throughout Brett’s career, he has been migrating his business acumen to non-profits and ministries and Biblical wisdom in for-profit organizations. He is passionate about serving persons struggling with drug and alcohol addiction and mental illness.
Major accomplishments include serving as a Staff Pastor of Saddleback Church and the Director of Strategic Alliances of The Purpose-Driven Life Campaign as well as the Inaugural Graduate from Rockbridge Seminary where he earned his Master’s Degree in Ministry Leadership. He has also served ask Rockbridge Seminary’s President of Student Alumni and Board of Directors.
Brett resides in Dana Point, CA with his wife of over 30 years, Cindi. They have two adult children, Elizabeth and Bailey.
Brian Thatcher has 31 years of experience in working with Christian CEOs. He founded Convene in 1996 (as BBL Forum) and as a Southern California Chair of Convene, he currently leads two teams one in South Orange County and one in Long Beach. He motivates and mentors CEO’s, presidents, and business owners to increase their leadership impact and grow their profitability through peer to peer collaboration and one-to-one coaching. He is leading the Convene initiative in the Pasadena/Los Angeles Area.
Mark L. Vincent
Director of Convene Consulting Network, Advisory Board Chairman
Out of a life spent building an enterprise and walking beside his first wife during her long cancer battle, Mark pared and honed and answered the question, “If there is just one thing to which you give your life, what will it be?” The answer for Mark is to love enterprise leaders while they claim their vocation as stewards.
Mark holds deep experience in process consultation, group process and process design, especially with franchised businesses and associational systems. He has provided extensive assistance to businesses, nonprofits, and ministry organizations in guiding leadership transitions, untying organizational knots, and moving forward in mission.
Mark is author, contributor or co-author of a number of books, including, Becoming a Steward Leader, A Christian View of Money, The Selfless Leader, and Fighting Disease, Not Death: Finding a Way Through Lifelong Struggle. He regularly contributes to the Convene blog, the CLA blog, and The Organizational Muse.
Prior to working for Convene, Kimberly was a student at Biola University where she received a degree in Sociology with a Minor in Biblical Studies. Through her studies and past job experiences, Kimberly was able to develop and strengthen skills in service, leadership, communication and organization.
Kimberly is passionate about serving her family, friends, colleagues and community. Her passion for service is what led her to work for Convene where, she felt she could put her strengths and passions to work.
In her free time, Kimberly enjoys reading, journaling, and spending time with her close friends and family.
Board of Directors
Bob is the president and owner of Omni Duct Systems, a manufacturer of sheet metal for the air conditioning industry, with locations in Anaheim, Sacramento, Ontario and San Diego, California, Everett Wa., Coeur D’ Alene Id. and Chandler Az. Bob leads Omni Duct with the primary goal of honoring God in all that is done, based on the company’s core values of Integrity, Caring and Stewardship.
Bob has been a member of Calvary Church of Santa Ana since 1983. He has served on the board of The Sheepfold, a ministry for battered and abused women and children, since 1993. He also serves on the boards of The Pocket Testament League, Project Hangout, The Barnabas Group and Convene.
Bob graduated from the University of Southern California with a degree in Architecture. He is also a graduate of The Masters Program and was a member of TEC/Vistage for four years.
Dean Del Sesto
Dean is Principal and Chief Creative Officer at Venthio – an award winning business branding agency in Laguna Niguel, CA and is a partner at VeracityColab – a video marketing agency in Aliso Viejo, CA. He is also an author on the topics of personal and business branding and speaks at companies, groups and event venues to help improve individual and corporate performance, (deandelsesto.com).
Ric started, built and sold a multi-state, $150+ million distribution business through acquisitions and strategic partnering. Additionally, he built a water management business, which uses computers and high-tech communication technology to control and manage large public institutional water use. He is experienced in and has done consulting in the areas of strategic planning, partnering, turnarounds, operations management and growth through acquisitions.
Ric graduated from Cal Poly University with a degree in engineering and later earned an MBA from the University of Southern California, with an emphasis in marketing and finance. He was also a member of TEC/Vistage for 17 years and is currently in a business partnership with his son. Ric has been actively involved with Saddleback church for over 27 years.
Entrepreneurial executive with a track record of creating innovative businesses and generating significant enterprise value. Demonstrated results in strategic and business planning to achieve dominant position in market niches. Experienced in building and leading innovative teams to achieve operational and financial results. Over 20 years of experience providing management consulting and strategic technology services to organizations from Startups to Fortune 50 companies in North and South America, the Middle-East and Asia. Proven track record in serving the healthcare Provider, Managed, Coordinated Care and Accountable Care, Hospital and Government markets. Values and principle based leader with a penchant for leading businesses that impact the community.