Master Trainer

Samuel Mattioli

Sam is an active Master Trainer, Global Digital Trainer/Producer, and is certified to deliver all programs for Dale Carnegie & Assoc. Sam spends his free time with his family of five children and eight grandchildren. He enjoys the outdoors, writing, surfing, and playing tennis in Southern California.

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Sam Mattioli is a Performance Management Architect. As a consultant and CEO of Graystone Corporation, he is a ‘Training and Development’ entrepreneur, and an experienced creator of corporate Universities, with a track record that includes helping companies reach new levels of success.

Work Experience

  • Currently President and CEO of Graystone Corporation
  • Teacher of MBA Programs at Fremont College & Cambridge College
  •  Teacher at the University of Leicester 2007-2018
  • 21 years of consulting, corporate leadership training, sales, and course design and delivery
  • 7 years with Dale Carnegie and 3 years as a Master Trainer


Industry Experience

  • Manufacturing
  • Retail
  • Department of Defense
  • Pharmaceutical
  • Financial
  • Commercial Real Estate
  • Aviation
  • State Department
  • All the following International Degrees are from the University of Leicester, UK:
    • Masters of Science in Performance Management & Training, Social Services
    • Diploma In Training and Development, Social Sciences
    • Certificate in Training Practice, Social Sciences


  • Dale Carnegie Master Trainer- Certified in all programs-Digital Trainer & Producer.


  • Certified in the following curriculum areas:
    • Situational Leadership
    • Resilience Testing
    • Meyers-Briggs Testing
    • DISC
    • Performance Based Instruction
    • Emotional Intelligence
    • SPIN Selling
    • Design
    • Develop and Deliver MBA Courses
    • ADDIE Method
    • Project Management
    • Managing Across Generations
  • FedEx
  • Caterpillar
  • Ford, Mazda & Hyundai
  • Starbucks
  • Department of Homeland Security & TSA
  • US Navy Leadership-Guam
  • Southwest Airlines
  • Northrupp Grumman & Boeing
  • Kimberly-Clark
  • Johnson Controls
  • Reliance Steel & Aluminum
  • CBRE Group
  • Goodyear Tire & Rubber
  • Bristol-Meyers Squib