Executive Directors

Executive Networks

Mark Naidicz
Executive Director, Global Human Resource Leaders Network (“GHRLN”)

Mark is Vice President, Human Resources of AbbVie, a global biopharmaceutical company employing approximately 28,000 people and marketing medicines in more than 170 countries.  He has extensive experience in organizational transformation during periods of rapid growth, turnarounds, acquisitions and successful company separations (spin-offs)

Mark has held numerous senior level Human Resources roles in international and global functions of Business Human Resources, Labor and Employee Relations, HR Mergers and Acquisitions, Talent Management, Talent Acquisitions and Diversity and Inclusions at AbbVie, Abbott and SC Johnson.  He started his career at Northern Trust Bank in a variety of recruiting roles.  Mark has diverse experience in the Pharmaceutical, Medical Devices, Diagnostics, Hospital Products and Consumer Products sectors.

Mark is a passionate, high energy leader who drives alignment and engagement to build the talent capability and culture to deliver strong results for the business.

Mark graduated with a Bachelor of Arts degree in Communications from Marquette University in Milwaukee, Wisconsin.

Kerttu Tuomas
Executive Director, Global Human Resource Leaders Network (“GHRLN”) EMEA

Kerttu Tuomas is a business-driven Human Resources executive with a strong track record in talent management, strategy building, deployment, change management and culture building.  In 2017, after 25 years in operational leadership roles, Kerttu pursued non-executive duties and left her position as Executive Vice President for Human Resources and Board member at KONE Corporation, a leading elevator manufacturer.  She also served as Chief Human Resources Officer (CHRO) and Board member at international manufacturing firm Elcoteq Network.

Kerttu graduated with a Bachelor of Arts degree in Marketing from the Vaasa School of Economics complemented by studies in political sciences.

Kerttu’s career before Elcoteq Network and KONE included roles in marketing, sales and consulting in the consumer goods and manufacturing industries.

Currently, Kerttu holds several Board member roles in global public companies Huhtamaki, the Finnish National Opera and Ballet and the Vice Chairman role at Kamira.  She also engages in non-profit work and pro bono mentoring assignments.

Jerry Warren
Executive Director, Global Total Rewards Network (“GTRN”)

Jerry Warren has recently retired from McKesson Corporation after more than eleven years in a senior HR leadership role.  As the Senior Vice President, Total Rewards, he led the compensation, health & wellness, and retirement programs for McKesson globally.

Over his 30+ year professional career in human resources, Jerry has been in a number of compensation, benefits and human resources business partner leadership roles in large complex global organizations like Amgen, Safeway, and Applied Materials.  Jerry also spent a number of years with Cadence Design Systems where he started as Corporate Compensation & Benefits Manager and progressed up to the head of HR for their Global Services organization as well as a multi-year assignment in the United Kingdom with responsibility for overall European & Middle East HR operations.

As an active member in WorldatWork since 1985, Jerry currently serves as an editorial reviewer for the association’s publications and is an Executive Compensation Advisory Board member.  A frequent speaker on total reward topics at professional association meetings and conferences, he is also a member of the Executive Compensation Council for the Conference Board, Global Total Rewards Executive Network, the Bay Area Compensation Association, SHRM, and HRPI.  Jerry has also played active roles on a number of Client Advisory Boards for companies like Fidelity Investments, AonHewitt, and Aetna.

Mandy Chooi
Executive Director, Global Talent Innovation Network (“GTIN”) EMEA

Mandy is a global leader with broad business and cultural acumen and a focus on organizational culture, talent strategy and leadership impact. She has partnered with top leaders in Fortune 500s, including technology, professional services, manufacturing, banking and FMCG firms on their transformation journey. With 20 years in global leadership roles and having lived in the US, Europe, and Asia, Mandy created and implemented bespoke talent strategies that underscore a high-performance culture in complex, high stakes environments where true re-invention is the path to continued relevance.

Most recently, as ING’s Global Head of Strategy & Innovation for HR, Mandy played a pivotal role in architecting ING’s highly successful transformation from a large conventional European Bank to an agile, innovative and digital culture. She helped the Board and top leadership to establish and execute the people transformation strategy, including reinventing major people processes. The outcomes include a unifying set of Behaviors and Leadership Capabilities, a transformed performance management approach, and a bold leadership development strategy anchored in self-awareness, authentic leadership and individual purpose, collaboration, and a continuous performance coaching & conversation culture.

As the Enterprise Head of Talent, Learning & Org Effectiveness for a global consumer products company Mandy led the efforts to create a unified transformation strategy focused on speeding up the pace of innovation and build an Innovation DNA. The two main tenets of her work are purpose and change. Helping organizations to be grounded in their purpose, and helping leaders dare to be authentic and lead from purpose so that they bring out the best in themselves and others. And change; building capabilities that position the organization to innovate, respond with agility and stay a step ahead. A management consultant, executive coach, and speaker based in Amsterdam, Mandy helps leaders build purpose-led organizations and design and implement their transformation journeys, focusing on culture, employee experience, and leadership.

Dr. Anna Tavis
Facilitator & Subject Matter Expert, Innovation Radar Network – Performance Management

Dr. Tavis is a Senior Organizational Consultant and Partner at Global Lab Plus with an extensive global practice in business, academia, and consulting. Anna’s corporate career spans a broad variety of industries including financial services (banking and insurance), technology, manufacturing and pharmaceutical firms. Most recently, her consulting practice expanded in the nonprofit sector.

Dr. Tavis is currently on the faculty at New York University teaching graduate and senior level courses in the departments of Organizational Behavior and Change and in Master’s Program in HR Management. She is the Executive Editor of People and Strategy Journal, a highly regarded strategic practitioner focused publication of HRPS, a SHRM affiliate.

Her publications include:

Collection of edited essays: Point Counterpoint, New Perspectives on People and Strategy (SHRM in 2012.)

Co-author of Practicing Internal OD in Practicing Organizational Development (Pfeiffer, 2008)

RM Rilke’s Russia. A Cross Cultural Encounter. (Northwestern University Press 1994)

Dr. Tavis is on the Board of Human Resource People and Strategy Association; a member of the Brain Trust at NeuroLeadership Institute and an Advisory Board member at East West Institute. She holds a M.A. and Ph.D. in Comparative Literature from Princeton University and an Executive MBA certificate in International Business from University of South Carolina School of Business.


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