ABOUT US
Transform Your Leadership Impact
For over a decade, Corsum Next Generation Leaders has equiped managers and leaders at all levels of an organization with the essential skills to lead with confidence in today’s complex business environment.
Why Choose Our Leadership Training?
Employers
You need exceptional leaders throughout your organization. We help you create them.
Leaders
Fast track your leadership skills, learn how to inspire and motivate your team to achieve the highest results.
Distributors
Be apart of the leadership revolution. Expand your training portfolio with leadership programs that work.
PROGRAM DEVELOPERS
- Denise O’Neill
- Martin O’Neill
- Mike Cook
Denise O’Neill
Owner/Principal Next Generations Leader Facilitator and Developer
Denise has close to 2 decades leadership experience with Fortune 500 Firms and has been consulting on leadership development with privately held companies for 13 years. She has been building and facilitating Next Generation Leaders development training workshops for close to a decade and has authored several workshops. In her role as owner of The Alternative Board, she has personally coached and mentored over 500 business owners focusing on growing their skills to achieve their business vision. Denise is a TAB certified executive coach and facilitator and owner of The Alternative Board Baltimore Washington.
Denise was a recognized leader in the consumer packaged goods industry and was Vice President of Sales and Marketing for the Foods Division of Nabisco as well as Director of Sales, Reckitt & Colman and Division Manager, Frito-Lay. She is also the founder of the award winning, Survivors Offering Support program for breast cancer survivors, assisting thousands of breast cancer patients in the Mid-Atlantic area.
Martin O’Neill
With more than 30 years of experience in the business realm, Martin O’Neill has acquired the perspective and depth of experience needed to guide leaders in both industry and the public sector. He is the author of “Next Generation Leaders,” (a 2016 Foreword INDIES Winner), “The Power of an Internal Franchise,” “Building Business Value,” and “Act Like an Owner.”
After facilitating more than 100 meetings and planning sessions with companies including Boeing, Constellation Energy and Northrop Grumman, O’Neill created a 12-course online leadership development program, “Next Generation Leaders.”
Mike Cook
Mike Cook has over 5 decades of leadership experience including Executive Vice President at Hughes Network Systems and over 7 years deeply invested as a Principal Trainer and Executive Coach, with a focus on building the next generation of business leaders.
Mike is the principal developer of the Next Generation Leaders LevelUP program, which has been pivotal in transforming managers into innovative leaders who thrive in nurturing and developing their teams. Mike is also the principal developer of the Executive Edge program.
Graduating students have demonstrated significant increases in their Emotional Intelligence scores, enhanced leadership and management behaviors and value to their organizations.
What You'll Master
Our leadership development covers three critical dimensions:
Personal Leadership
- Strategic thinking and decision-making
- Executive presence and influence
- Leading through change and uncertainty
Team Leadership
- Building High-Performing Teams
- Coaching & Motivating
- Conflict Management
- Goal Setting & Accountability
Organizational Leadership
- Engagement in a Complex Workplace
- Communications in a Multi-Dimensional World
- Project Management
- Client relationship excellence
The Result?
Leaders who don’t just manage—they inspire, innovate, and create lasting impact within their organizations and industries.
Training That Fits Your World
Maximum flexibility. Zero compromise on quality. Choose from in-person intensive sessions or convenient online programs—or blend both to create the perfect learning experience for your team.
In-Person Training
- Deep-dive workshops with hands-on collaboration
- Customized to your team dynamics and challenges
- Perfect for team building and intensive skill development
Online Training
- Learn at your pace, on your schedule
- Cost-effective for distributed teams
- Interactive sessions that deliver real engagement
- Choose from single company or multi-company format
Your Schedule. Your Team. Your Success. We adapt to your business needs—whether that’s a two hour executive coaching session, a 15 month team development program, or participation by selected leaders in any one of Corsum’s Next Generation Leaders programs.
Connect with a local distributor to discuss your team’s specific leadership training needs and design a customized program that delivers results.
Can’t find a local distributor? No problem—explore our online training options for immediate access to our comprehensive leadership curriculum by contacting us.
We’re here to help you, your team, and your organization lead with confidence.
LOCATIONS
Threhan Stenton is a Senior Next Generation Leader Facilitator, with 4 years’ experience teaching rising stars and first level business managers core leadership principles that revolutionize their skills at communicating, managing change, leading teams and building the business. Trehan also is certified as a LevelUP Facilitator for Next Generation Leaders working with mid -managers to build capabilities to lead in senior positions within organizations.
Trehan has broad mentoring and coaching expertise from large corporate environments to midmarket and small businesses that he brings to his training facilitation. He has over 30 years’ experience in marketing, sales, operations, finance and human resources. Trehan is a seasoned consultant and entrepreneur who ran his own business in the healthcare sector, prior to successfully selling his business.
Mark Knudsen is the Co-Founder of Wealth Building Business Solutions and the owner of The Alternative Board | TAB Ventura County, CA. He is a leadership advocate and a facilitator of the Next Generation Leaders program.
Don Maranca is an Expert EOS Implementer and Advisor, and coach to business owners and their leadership teams. Don is the President of JDSM Enterprises. He is also the former President of The Alternative Board |TAB San Antonio, TX.
Todd Ringler is a Partner at The Alternative Board, Suffolk County, NY and works with senior business leaders to overcome challenges , grow their businesses and increase profitability. Todd is an Executive Coach and Facilitator and distributor of Next Generation Leaders. He is also the Founder and Owner of Calm Waters Consulting providing business appraisal services and consultative services to improve business value.
Jackie Gernaey is the Chief Executive Officer and Founder of SevenStar HR, providing fractional HR Services to small and midmarket businesses. She is also the CEO and Founder of The Alternative Board |TAB Suffolk County, NY and a distributor for Next Generation Leaders Training programs.
Rick Lundgren is the Founder of the FIN Group and the owner of The Alternative Board | TAB Nashville, TN. Rick provides CEOs and business Presidents Peer Advisory services and insights, as well as Executive Coaching to overcome challenges and identify and seize new opportunities.
The FIN Group specializes in strategic planning, fractional HR, and leadership training through Next Generation Leaders.
Barry Gleeson is the leader of The Kelsey Group, and the President of The Alternative Board |TAB St. Louis, MO. He is an Executive Coach and Business Advisor to privately held companies. Barry’s services include building and facilitating advisory boards, leadership coaching and training, strategic planning and organization alignment.
John Mousseau is the Owner/CEO The Alternative Board |TAB Jersey Shore North, serving established small and mid-market companies with peer advisory, strategic planning and executive coaching services. John is a certified Allen Training Center Executive Coach. He is also the owner of Moose Consulting providing marketing, management consulting and leadership training including the Next Generation Leaders curriculum.
Brian White is the owner of White Stone Solutions and is an Expert Worldwide EOS and Implementer and Speaker. White Stone Solutions helps companies build cohesive high functioning leadership teams. White Stone Solutions is a distributor of the Next Generation Leaders program.
Matthew Saline is the Founder and President of The Alternative Board |TAB Philadelphia, PA. helping business leaders chart the course to not only business growth but vision achievement as well. Matthew is also the CEO of Big Door Open, providing marketing expertise, and providing advice on brand positioning and marketability to achieve growth. The Big Door Open works with leaders and their teams providing Next Generation Leaders training and aligns values, mission and purpose to achieve objectives.
Sigi Loya is president of The Alternative Board |TAB Pittsburgh, PA. working with business owners and leaders to implement TAB tools and processes to improve their business successes. TAB Pittsburgh assists companies to develop succession planning and exit strategies.
TAB Pittsburgh is a distributor for the Next Generation Leaders program. Sigi is also the President of The Hormone Center and The IV Center.
Kelly Shy is the Vice President of JDSM Enterprises helping entrepreneurs and leaders break through self-imposed ceilings. Kelly has enabled hundreds of front, mid-level and executive leaders in industries from the trades to professional services to grow their skills through Next Generation Leaders training.
Diane Knudsen is the Co-Founder of Wealth Building Business Solutions and owner of The Alternative Board | TAB Ventura County, CA. She is a certified Executive Coach and facilitator of peer advisory boards. Diane is a leadership advocate and a distributor and instructor of the Next Generation Leaders program.
TAKE IT FROM US
BUSINESSES WE’VE HELPED
READY TO GET STARTED?
Wherever you are on your leadership journey—just getting started, preparing for the next step, or guiding others—we’re here to help. Connect with us to explore how our programs, tools, and community can support your growth and goals.