Our people


Triple Value Leadership works with a network of senior coaches, consultants, facilitators and experts

Sander Tideman

Director and Founder


Sander Tideman is founder of Triple Value Leadership. A former international lawyer and finance executive, he is a specialist in leadership development and organizational transformation, motivated by building the capacity to address the unprecedented social and ecological challenges of this age. Tideman is Executive Director of Garrison Institute International and serves on the faculty of Mobius Executive Leadership in Boston and Rotterdam School of Management, Erasmus University in the Netherlands.

More info on Sander, including previous books and presentations, can be found here.

Annemieke van der Werff

Director USA and co-Founder


Annemieke van der Werff is a strategic human resources executive with deep global experience in the financial services industry. She currently is the US Director at “Triple Value Leadership,” a newly established center dedicated to develop sustainable and compassionate leadership for next generation leaders. Prior to this, Annemieke co-led the Compassionate Leadership in Finance (CLiF) program at the Garrison Institute in New York. She is the former Chief Human Resources Officer (CHRO) at MUFG for the Americas, and global head of talent management and talent acquisition functions for the Tokyo-based organization. Annemieke played a crucial role in driving the mindfulness movement within the bank, acting as a catalyst and executive sponsor. She was the global head of HR at HSBC Holdings Plc., leading the HR function for the global retail bank and global corporate functions. Her career began at ABN AMRO Bank, where she ultimately served as the CHRO for ABN AMRO North America and LaSalle Bank Corporation. With her experience living and working in the Netherlands, the United Kingdom, Latin America, and the United States, Annemieke brings a diverse perspective to her work.

She obtained her B.S. in Human Resources and Labor Market Policies at the Amsterdam/Haarlem Business School. She is also certified in organizational development and change management at the SIOO Institute in The Netherlands. She completed the Advanced Human Resources Executive Program at the University of Michigan, Ross Executive Education.

Emiel van Sambeek


Trained as a biologist and environmental scientist, Emiel van Sambeek has been working in the sustainable energy transition in research, consultancy, finance, as a leader and entrepreneur for over two decades. His experience took him across Europe, Africa, U.S. and Asia, in particular China, where he lived from 2008 to 2013 and where he was also introduced to ancient contemplative traditions and practices. Emiel is deeply connected with nature and loves to share his passion for nature through nature education and conservation activities. Bringing together his insights from the energy transition and nature Emiel currently focuses on helping leaders and organisations navigate the enormous environmental challenges and transitions ahead of us.

Linda van Aken


Linda on linkedIn.

More will follow.

Jeroen Drontmann


For the last 30 years Jeroen specialized in the areas of organizational chance, team effectiveness, leadership development and executive coaching.
Jeroen started his career as a management consultant at Holland Consulting Group and Coopers & Lybrand. In 1994 he started his independent practice Heart Matters because the heart matters! His passion is to connect people with themselves (head, heart and hands) and with each other. He published several articles on this topic as well as two books, Persoonlijk Succes (Personal Success) in 1993 and Hoofd ontmoet Hart (Head meets Heart) in 2002. He studied law and holds a postgraduate degree in management consultancy. He is certified in tools such as The Leadership Circle, Leadership Style Inventory, FiroB and Barrett Cultural Transformation.

Reinier Tilanus


Reinier Tilanus is executive coach and facilitator with many years of business experience, of which sixteen years with Unilever in Supply Chain. He has lived and worked in Holland, Germany and Vietnam and extensively travelled in Asia. He has been a dedicated Buddhist practitioner for over twenty years with several teachers and is also a certified mindfulness trainer.

Isabel d’Arenberg


Isabel d’Arenberg, a catalyst for inner transformation, is a professional coach, trainer and IFS therapist. She empowers individuals to develop self-leadership and enhance their authentic communication and relational skills. Through community circles for women, she encourages personal and spiritual growth and fosters commitment to be a force for good in the world.
She derives meaning from aiding others to connect to their deepest selves, empowering them to make conscious decisions when facing any situation in life rather than being guided by automatic, reactive patterns. She does this on a pro-bono basis as a way to give back to the community.

Edie Farwell


Deploying a whole-systems approach to address the climate crisis, Edie leverages decades of experience building close-knit international networks for environment, sustainability, and social justice. She coaches sustainability champions to advance high impact climate and social justice initiatives. Edie co-founded the Donella Meadows Leadership Fellows Program where she designed transformative leadership skills through a focus on systems thinking, reflective conversation, the discipline of vision, and coaching. To expand this work she founded and directs the Sustainability Leaders Network,

Early in her career Edie was the executive director of the Association for Progressive Communications, where facilitated the early adoption of information and communications technologies through a global network of civil society organizations. This included leading international teams to provide the newly created internet services at several United Nations world conferences, including the 1992 U.N. Earth Summit in Brazil, the 1993 U.N. Human Rights Conference in Austria, and the 1995 U.N. Women’s Conference in China — for which she was profiled in the 2020 book They Didn’t See Us Coming: The Hidden History of Feminism in the Nineties.

Edie and her family were early pioneers of the Cobb Hill eco-village experiment in sustainable living in Hartland, Vermont.

Myra Pieters-Engelkes


A licensed psychotherapist in private practice for three decades, Myra has ample experience in reading people and their motivations. She has developed a unique style of therapy based in the traditional psychoanalytic school, supplemented with many years of Buddhist studies (specifically Tibetan Buddhism) with several expert teachers, as well as knowledge about the human energy field.
With a deep longing to serve humans in all their endeavors in creating a meaningful and valuable life, she embarked on a Vision Quest to Lapland in 2022. She experienced there what a meticulous teacher Nature is in mirroring back our own true Nature. In her work with clients, she loves to really meet people where they are, and to be present in such a way that the other feels maximally invited to show their true being.

John van Giels


More than 25 years I support business and sustainable development goals by focus on the ‘Human Factor’, from middle management to executive and board level.
Selection of right people and teams, matching motivational drives with competences and task. Getting the right people on the train. Strategic HR. Decision making. Risk management. Leadership development.
On competence and motivational drive level.
On mental skills.
Certified facilitator of Profile Dynamics value/motivational drives assesment.
Nature as great teacher.

Motivational speaker on themes as leadership, risk management & managing uncertainty, team engineering, and strategy and global transitions
Active mountain and polar explorer.
Certified UIMLA International Mountain Leader.

Specialties:leadership training, organizational development, organizational learning, sparring & coaching value based management and strategic goal setting, action learning / outdoor training, motivational speaking, mountain guiding


Anders Ferguson


Anders Ferguson is a founding principal of Veris Wealth Partners and previously led the company’s strategic marketing and business development. He is a seasoned entrepreneur and financier building sustainable companies and nonprofits since 1978. Anders specializes in sustainable alternative assets, capital formation, and business strategy. Prior to Veris, Anders chaired Uplift Equity Partners, a firm specializing in sustainable private equity. He speaks frequently about sustainable leadership and investing.

Daniel Siegel


Daniel Siegel, M.D. is an author, Founding Co-Director of the Mindful Awareness Research Center and Mindsight Institute

Joe Loizzo


Joseph (Joe) Loizzo, MD, PhD, is a Harvard-trained psychiatrist and Columbia-trained Buddhist scholar with over forty years’ experience studying the beneficial effects of contemplative practices on healing, learning and development. He is Assistant Professor of Clinical Psychiatry in Integrative Medicine at Weill Cornell Medical College, where he researches and teaches contemplative self-healing and optimal health. He has taught the philosophy of science and religion, the scientific study of contemplative states, and the Indo-Tibetan mind and health sciences at Columbia University, where he is Adjunct Assistant Professor at the Columbia Center for Buddhist Studies.

Matthias Birk


Matthias Birk is a psychologist with a PhD in business and a Zen dharma holder in the White Plum Lineage at Still Mind Zendo in New York. He teaches leadership and mindfulness as an Adjunct Professor at NYU and at Columbia Business School’s Executive program and has worked as a consultant at McKinsey & Co., Senior Director of Professional Development at Ralph Lauren, Vice President of Partner Development at Goldman Sachs and currently as Global Director of Partner Development at White & Case, LLP. He has introduced executives to the practice of mindfulness at each of those organizations and also taught mindfulness to organizations like Amazon, Deutsche Bank, Google, SoftBank and the United Nations.

Peter Blom

Peter Blom became Director at Triodos Bank in 1989, where he had been working since its inception in 1980. He served as CEO from 1997 until May 2021, and played a key role in the founding of SFL alongside Klaas van Egmond and Herman Wijffels. Peter currently serves as Co-Chair of the Sustainable Finance Lab (alongside Dirk Schoenmaker), and was the founder and Chair of the Global Alliance for Banking on Values (GABV.org) until March 2021. He is now a member of the Supervisory Board of DNB and Chair of the CPC (CPB Oversight Authority). Additionally, he is a member and director at the Club of Rome and Chair of the Supervisory Board of MVO Nederland.

Volkert Engelsman


Founder Resilience Hub and Robin Food Coalition, two networks uniting for impact and fostering a food transition for a healthier and fairer world.

Over 40 years of experience in innovation development, corporate social responsibility and business strategy, with a focus on one health, social inclusion, organic food and agriculture. I am passionate about future proofing boards, business, brands, and promoting the true cost of food.

“To align the interests of business, society and the planet, we need to become sustainability warriors, and this requires a groundbreaking mind-shift for most of us. Grounded in first hand experience, filled with inspiring stories and practical tools, Triple Value Leadership talks to the mind, the heart and the soul. It takes a deep and compassionate approach to supporting companies and their leaders in the journey towards Triple Value Creation. It is also a well written book that leaves the reader grateful and energized!“

Laurence Debroux, Non Executive Board Member (Novo Nordisk, Exor, Juventus, Kite Inisghts, HEC Business School) and former CFO (Heineken, JCDecaux, Sanofi).

For more information, please contact us through one of these options:

Call: +31 (0) 6 29 03 51 70

Email: info@triplevalueleadership.com

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