RINGEL GROUP - Key Persons


Alexander Caillet

Job Titles:
  • Coach
  • Executive
  • Founder of One21Five, Inc
Alexander is the founder of One21Five, Inc., an organizational consulting and coaching firm dedicated to helping leaders and leadership teams to achieve significant organizational transformations by balancing the business and people aspects of change. Engagements focus on strategy development, organization redesigns and restructurings, mergers and acquisitions, continuous improvement programs, business turnarounds, team-based structures, change leadership programs and organization culture change. Alexander is also an executive coach and performs high-performance team coaching, process facilitation, leadership coaching and management training with his clients. His work is founded on the integration of numerous disciplines and methods acquired from the fields of leadership, management development, organizational psychology, neuroscience, executive and team coaching, high performance training and cardiac coherence. His goal is to blend human resilience and performance with the achievement of meaningful business results. Alexander has been helping his clients for two decades - his clients includes: Amway, AREVA, BNP Paribas, Boehringer Ingelheim, BP, Bristow Helicaopters, Capital One, Cardinal Health, Chevron Oronite, Citigroup, CNA Insurance, Coca-Cola Enterprises, The Congressional Management Foundation, DKNY, Dow Chemical, Duracell, Eli Lilly, FMC, Gillette, General Mills, Harrah's, Holiday Inn Worldwide, International Paper, JDRF, Julius Baer, Liz Claiborne, McKinsey & Co., L'Oréal USA, Losinger, MITRE, NASA, Oxfam America, PartnerRe, Pertuy Construction, Partners In Health, Pfizer, Schroders plc, Sears, US Cellular, SNCF, Vertex Pharmaceuticals, VFC, Vodafone UK. Alexander is also an Adjunct Professor on the faculty of Georgetown University's Leadership Coaching Certificate program, a guest lecturer at the American University and a frequent international speaker on the subjects of change, teams, coaching and leadership. He is certified in Team Management Systems (TMSDI) and the Hogan Personality Inventory, and as a Health Realization practitioner and a HeartMath 1-on-1 Provider. Alexander is a dual citizen of France and the United States, has lived in Europe, the United States and Mexico, and is fluent in English, French and Spanish. He received a B.S. in Psychology from the University of Michigan and a Master in Organization Psychology from Columbia University. Alexander lives in Boston with his wife Janice and his daughters Chloé, Léanna and Alexia.

Brian Tarallo

Job Titles:
  • Managing Director of Lizard Brain
Brian Tarallo is the managing director of Lizard Brain. He is a facilitator who specializes in visual methods and virtual meetings. He facilitates clients through illustrating their visions, seeing their strategies, and mapping their futures. Brian brings facilitation to federal agencies, national associations, and companies in the healthcare, defense, engineering, and consulting industries. His TEDx talk, "What's Wrong with This Picture," on the power of visual note taking in education, has over 16,000 combined views. He is a contributor to the soon-to-be released book, The Visual Facilitation Field Guide. He has served as a business process improvement manager for a federal agency, an operations manager and later a senior consultant for a Washington, DC-based consulting firm, an associate and later an associate partner for a Washington, DC-based engineering firm, a project manager and an operations manager for a national development firm, and a development volunteer for the U.S. Peace Corps.

Karen Siff

Job Titles:
  • Founder and CEO of KAS Consulting Inc / Speak on
Karen Siff Exkorn is founder and CEO of KAS Consulting Inc/Speak On. An internationally acclaimed speaker and author, Karen has appeared on Good Morning America, Today Show, The View, CNN, ABC's Nightline, NBC Nightly News, CBS News, PBS, NPR, and has been featured in The New York Times and The Wall Street Journal. With over 20 years of experience, Karen has created and led customized corporate training programs and executive retreats for clients that include: Alloy Digital and Media, American Management Association, Ann Taylor, Armani, Barneys New York, Bloomingdales, Deloitte & Touche, Equinox Fitness Club, GE Capital, Jaeger, Louis Vuitton, Macy's, Moschino, New York University, PricewaterhouseCoopers, Radio City Music Hall, Saks, Sean John, Sony, Tommy Hilfiger and the United Nations. She has lectured at Brown University, New York University, UMass Medical School, and Columbia University. Karen is the author of the bestselling book, The Autism Sourcebook: Everything You Need to Know About Diagnosis, Treatment, Coping and Healing-From A Mother Whose Child Recovered. (HarperCollins 2005). Karen has a B.A. in Psychology from Brown University and an M.A. in Performance Studies from the Gallatin School of Individualized Studies at New York University.

Lauren Brownstein

Lauren Brownstein has been working in philanthropy for more than 20 years as a fundraiser, educator, program manager, and administrator. She helps non-profit organizations, philanthropists, and grant makers achieve their goals through PITCH: Fundraising and Philanthropy Consulting, her fundraising and philanthropy consulting practice. She has raised millions of dollars for museums, workforce development programs, student support organizations, community centers, and more. Her areas of expertise include: foundation relations (grant writing, prospect research, cultivation and stewardship), corporate sponsorship, campaigns, and staff and board training. In addition, Lauren helps clients with a variety of writing projects, such as annual reports and staff training materials. She has a knack for clean, concise, and compelling writing, finding a way to make each client's unique story jump off the page. Lauren has led numerous workshops to help individual donors define their philanthropic goals and create charitable giving plans that reflect their values, passions, and priorities. She manages the grant making process for the Tranquil Space Foundation, a grant maker that supports programs for women and girls. She has taken part in philanthropic advisor training through 21/64, an organization devoted to advising family philanthropies. As a reflection of her commitment to philanthropy and volunteerism, Lauren has served on the boards of several nonprofits and volunteers each week with cancer patients at a local hospital. She earned a Masters in Teaching in Museum Education from the George Washington University (where she has served as a lecturer on museum fundraising) and a Bachelors with High Distinction from the University of Virginia.

Lisa Kay Solomon

Lisa Kay Solomon works with leaders to build more expansive and creative futures. She helps leaders address today's most vexing business challenges, while also accelerating possibility and progress on their greatest opportunities. Lisa has brought her discipline on design-led innovation to organizations such as ING, Toyota Financial Services, Andreesen Horowitz, Singularity University, Packard Foundation, Department of Education, PBS, Stanford University, Citrix Systems, and Kauffman Program from Venture Capitalists, and teaches innovation in the ground-breaking MBA in Design Strategy program at the California College of the Arts. As a TEDx speaker, Lisa keynotes at global conferences in innovation, leadership and design and lectures at leading business schools across the country. Lisa coauthored the Wall Street Journal Bestseller, Moments of Impact: How to Design Strategic Conversations that Accelerate Change (Simon & Schuster, Feb. 2014) and her work has been covered by The Wall Street Journal, Inc., Forbes, Huffington Post, Business Week, and more. Lisa earned a BA from Cornell University and an MBA from New York University-Stern School of Business. She resides in Menlo Park with her husband and two daughters.

Rob McKinnon

Rob McKinnon writes and speaks on leadership, and is a coach and advisor to CEOs and their executive teams. He focuses on helping leaders improve their effectiveness and, ultimately, the bottom-line growth in their companies. Rob is passionate about his work. Rob knows first-hand the challenges facing leaders at the top. He led companies in a variety of industries - financial services, banking, commercial construction, technology, entertainment, biotech - for nearly 20 years. He has shepherded organizations through start-up, turned around troubled companies, and infused new vision into established, mature businesses. Having "seen it all," Rob draws on his experience to help leaders craft tools and solutions unique to their personal style of leadership. After receiving a degree in Business from Wheaton College, Rob served four years as an Army Armor officer, leading combat-ready forces in Europe. He earned an MBA from the Smith School of Business, University of Maryland, and has completed postgraduate studies in Leadership Coaching at Georgetown University in Washington, DC. Rob is a recipient of the Master Certified Coach (MCC) from the International Coaching Federation.

Yonatan Gordis

Job Titles:
  • Partner at ChangeCraft