COACHSOURCE - Key Persons


Allegra Sass

Allegra Sass | Allegra joined CoachSource in 2012, serving primarily as Executive Assistant to Stephen Sass. Since then, she has also gained the titles of HR associate... more

Angie Voorhees

Angie Voorhees | Angie has been with CoachSource since the very beginning, serving as Accounting Manager. Previous to joining CoachSource, Angie worked in public accounting for over 20 years. She graduated in 1989 with a B.S. in Accounting, and lives in New Jersey with her family... more

Ann Van de Perre

Ann Van de Perre | Ann has more than 25 years of international corporate experience as Executive coach, strategic HR & Organization Development Executive in Fortune top 500 organisations. Ann is an in-depth guide and catalyst for boosting leader's success... more

Brian O. Underhill - CEO, Founder

Job Titles:
  • CEO
  • Founder
  • Founding Partner & CEO Brian at Coachsource.Com
  • See CoachSource Founder & CEO
CoachSource Founder & CEO, Brian Underhill, and Director of Client Service and Strategic Initiatives, J'Aimee Mission, Ph.D. share some of the key findings from our 2020 industry-wide research study "Executive Coaching for Results" to catalyze conversations on practice implications for organizations and internal/external coaches. See CoachSource Founder & CEO, Brian Underhill, address what organizations can do to combat the country's struggles with race, privilege, and prejudice. He, along with a panel of experts - including CoachSource's own Zia Best, discuss ways to foster a corporate environment that encourages open dialogue and support for Black leaders. CoachSource's Founder and CEO Dr. Brian Underhill speaks about current trends in the executive coaching industry, including what the research says about coaching fees and what executives most want in a coach. This fun and interactive hour-long webinar took place on April 1, 2020, and was hosted by Dr. Terry Hildebrandt and Fielding Graduate University. Brian O. Underhill, Ph.D. | Brian is CoachSource's Founder and CEO, who is an industry-recognized expert in the design and management of worldwide executive coaching implementations. Brian is the author of Executive Coaching for Results: The Definitive Guide to Developing Organizational Leaders (Berrett Koehler... more

Carol Kauffman, Ph.D

Job Titles:
  • Founding Director of the Institute of Coaching
Carol Kauffman, Ph.D. | Carol is the Founding Director of the Institute of Coaching located at McLean Hospital, Harvard Medical School where she is an Assistant Clinical Professor. She launched the annual Harvard Coaching Conferences, now given annually each September as well as...

Dan Feldman

Job Titles:
  • Coach
  • Executive
  • Team Coaching Specialist
Dan Feldman | Dan Feldman is CoachSource's Team Coaching Specialist and an Engagement Manager. Dan is an Executive Coach who helps senior leaders build sustainable leadership and broaden their leadership style to improve influence, resilience, and team performance... more

Dave Dowling - CIO

Job Titles:
  • Chief Information Officer
Dave Dowling | Dave Dowling is Chief Information Officer (CIO) at CoachSource. Working with the Executive team, Dave supports the firm through his technical leadership, vision, and expertise. He is active in and responsible for software development, data... more

Dr. Marshall Goldsmith

Marshall Goldsmith, Ph.D. | Dr. Marshall Goldsmith is a world authority in helping successful leaders achieve positive, lasting change in behavior: for themselves, their people and their teams. Dr. Goldsmith was recently recognized as one of the fifteen most influential... more

Erin O'Connell

Job Titles:
  • Manager
Erin O'Connell | Erin O'Connell is an Engagement Manager, Ph.D, PCC who brings her early work in theater and deep experience consulting in public and private sector organizations to her leadership development programs and coaching clients. She is recognized as a joyful, inquisitive coach effective in aligning business strategy with practical solutions to enhance individual, team, and organization performance.

Eva Kovacs

Job Titles:
  • Head of Internal and Executive Coaching, GSK

Glenda Gasmen

Job Titles:
  • in 2017 As Executive Assistant
Glenda Gasmen | Glenda joined CoachSource in 2017 as Executive Assistant. Glenda has over 20 years of experience in office administration, holding a variety of roles - Office Manager, Events Manager, Program Manager, and Executive Assistant. She helps sustain the mission of leadership and executive development communities and is based in San Diego, California.

Heidi Kraft

Heidi Kraft | Heidi Kraft, is an Engagement Manager, successful entrepreneur, executive leadership/team, coach and accomplished executive. She combines her solid business experience with her passion to help individuals and teams develop the leadership skills... more

Helfried Albrecht

Helfried Albrecht | Helfried Albrecht, Ph.D. is a very experienced executive coach, leadership and organizational development consultant. Over the last 15 years, he worked with hundreds of leaders in many industries in Europe, Middle East and the US... more

Howard J. Morgan

Howard J. Morgan | As an executive coach, Howard Morgan has worked with international executives to successfully drive organizational change initiatives. He was named as one of the 50 top coaches globally, has been recognized as one of five coaches with "a proven track... more

Jeff Nally

Job Titles:
  • Vice President of the Global Coach
Jeff Nally | Jeff Nally is the Vice President of the Global Coach Community, Group Coaching Product Specialist, and Engagement Manager at CoachSource. As the Vice President, Global Coach Community, Jeff leads the strategy, development, and connection for more than 1,100 coaches. He and his team attract, engage, and retain coaches to meet the growing demand for experienced executive coaches... more

Jeffrey M. Cohen

Jeffrey Cohen | Jeffrey M. Cohen, MBA, has over 30 years of consulting and corporate experience. Having been an executive coach for much of that time, he has been acknowledged for his "pioneering work." While executive coaching is his primary... more

Josette Goldberg

Job Titles:
  • Engagement Manager and Senior Executive Coach
Josette Goldberg | Josette is an Engagement Manager and Senior Executive Coach who specializes in taking already successful business leaders and their teams to the next level of performance... more

Kate Ludeman

Kate Ludeman, Ph.D. | A widely recognized executive coach and author, Kate has coached about 1,000 senior executives in a wide range of industries in the US, in all major Asian and European countries, and in many South American countries. She coached CEOs at Dell... more

Kathleen Diekmann

Job Titles:
  • in 2016 As a Billing Specialist
Kathleen Diekmann | Kathleen joined CoachSource in 2016 as a Billing Specialist. Prior to joining CoachSource, she was Director of Core Systems Operations Support at Visa and worked in Internal Audit for both Charles Schwab and Lockheed Martin. She has a B.S. in Accounting and lives in Northern California with her family.

Kathy Vlietstra

Job Titles:
  • Project Assistant
Kathy Vlietstra | Kathy joined CoachSource in 2019 as a Project Assistant. She has been an Online Business Manager/Virtual Assistant for the past 10 years and is the administrator for ICF Michigan. Prior to that, she held several positions, including website project manager, recruiter, and program manager. Kathy is based in Michigan. In her spare time, she loves to swim, hike, and be outdoors. She enjoys spending time with friends and her son.

Keiko Hsu

Keiko Hsu | Keiko Hsu is the VP of Client Operations, responsible for a team of Engagement Managers serving strategic accounts at CoachSource. She also serves as an executive coach/business coach, coaching senior executives at major Fortune 100 corporations... more J'Aimee Mission | J'Aimee, Director of Client Service and Strategic Initiatives for CoachSource, has a background in analytics, leadership, training, and project management. She has a combination of consulting, and business client service experience from her work at The Spur Group, a business management consulting firm... more

Ken Parekh

Ken Parekh | Ken Parekh brings over twenty five years experience advising global businesses and Boards in highly competitive marketplaces, strengthening organizational capabilities and building and leading high performance teams... more

Laura Parks

Job Titles:
  • Project Assistant
Laura Parks | Laura joined CoachSource in 2019 as a Project Assistant. She has over 30 years of experience in production, project, and program management and is certified in Lean Six Sigma. Prior to CoachSource, Laura worked at HP in Silicon Valley for 20 years. Located in California, Laura enjoys hiking, skiing, sewing, and spending time with family and friends.

Laurence S. Lyons, Ph.D

Job Titles:
  • Founding Director of the Metacorp Group
Laurence S. Lyons, Ph.D. | Laurence is the founding director of The Metacorp Group. He is an accomplished coach, consultant, public speaker, and author, as well as a leading authority on organizational transformation. His thirty years' experience includes senior line and staff...

Louise Buckle

Job Titles:
  • Director, Head of Partner Development & Coaching, KPMG EMA

Mark C. Thompson

Job Titles:
  • Senior Operating Executive
Mark Thompson | Mark C. Thompson is a senior operating executive and New York Times bestselling author with 30 years coaching high-achieving leaders, including Steve Jobs, Richard Branson, Tony Robbins and Charles Schwab. Today he is founding CEO of Sir Richard Branson's Virgin Unite Entrpreneurship Centres...

Patty Ainsworth

Patty Ainsworth | Patty joined CoachSource in 2009, primarily as Brian's executive assistant. Since then she previously supported Kimcee McAnally, and has also become Executive Assistant to Jeff Nally, as well as working directly with clients and coaches, as a Coach Associate... more

Simon Macklin

Job Titles:
  • Vice President, Customer Success UK and Ireland, Salesforce

Stephen E. Sass - CEO, CFO

Job Titles:
  • CFO
  • Founding Partner
  • Manager
  • Managing Partner
  • Managing Partner, COO Steve at Coachsource.Com
Stephen E. Sass | Steve is Managing Partner and CFO of CoachSource, LLC, and President of Sass & Associates, Inc. a performance consulting firm. His 40+ year business career includes 28 years with IBM in customer service and education executive management, and four... more

Teri Frangie

Teri Frangie | Teri handles Global Business Development for CoachSource. She is a business development executive who builds and leverages relationships to achieve two goals: to help organizations develop effective leaders; and to help organizations increase their results through innovative practices... more

Tracey Bertolina

Tracey Bertolina | Tracey leads the finance organization and has 30+ years of experience in accounting, financial planning, and acquisitions. Tracey has worked in a variety of industries and has made it an ongoing priority to improve and enhance all aspects of financial reporting and systems... more

Vera Gramkow

Job Titles:
  • Global Head of Talent and Performance Development, Bayer

Zia Best

Job Titles:
  • Account Service Manager
Zia Best | Zia Best serves as an Account Service Manager and Diversity, Equity & Inclusion Specialist for CoachSource. As an account manager since 2017, she manages 70 corporate clients and oversees more than 200 1:1, group, and team coaching engagements per year. She works directly with global organizations...more