“I worked with Oscar over a six-month coaching engagement during a period of significant organisational uncertainty, including restructuring and potential site closure. The coaching helped me draw a clearer line between what I can control and what I cannot, and to articulate my own leadership principles around integrity, transparency, and responsibility. As a result, I have been able to stay grounded, make decisions with greater confidence, and maintain a constructive leadership approach despite external pressures. Oscar combines strong business understanding with the ability to challenge assumptions and create real reflection.”
“Oscar coached me through a significant leadership transition into a senior global role. I shifted from an execution-focused approach to a more strategic orientation, and moved away from taking on too much myself towards actively delegating ownership and building accountability within the team. The coaching also helped me introduce clearer meeting cadences, one-to-one structures, and KPI frameworks, which have strengthened alignment across the organization. Each session led to concrete actions I could apply immediately. I would strongly recommend Oscar as an executive coach at senior level.”
“I worked with Oscar during a period when my role expanded significantly. The coaching focused on shifting from a hands-on, operational approach to a more strategic leadership role. A key change for me has been introducing a deliberate pause before responding to issues, which has improved both my decision-making and how I engage with my team. I have also learned to let go and delegate more effectively, recognizing that my role is to build a team that can operate independently. Oscar combines practical business understanding with the ability to ask questions that make you think differently while keeping the discussion grounded in real situations.”
“I started working with Oscar after several years of intense change, new roles, relocations across continents, and limited time spent on my own development. What drew me to him was that he is genuinely independent, which created a safe space to think out loud without being judged. It helps that we share a similar background — both Dutch, both with long careers in multinationals across many countries — so he understands the context and challenges quickly. He listens carefully and asks questions that make me see situations from a different angle. He also connects the dots between past and present in a way that gives me more clarity. The coaching helped me find a healthier work-life balance, reflect on where I am in my career, and rebuild my energy. I have come away with more peace of mind.”
“Our team coaching workshop in Bangkok brought together 15 of our senior regional leaders to foster deeper collaboration across Asia, strengthen accountability, and challenge the status quo. The session created the right balance between challenge and psychological safety, enabling open dialogue while maintaining a strong focus on practical outcomes. The outcome was a stronger shared understanding of how to grow the business together, not within individual countries or silos, but as one regional team. We left with a shared language, clearer alignment on key objectives, and tangible actions to improve how we work both internally and with our clients.”
“Our two-day team coaching engagement in Hanoi brought together 20 regional and national leaders, supported by 20 individual interviews ahead of the workshop. The objective was to define the Sioux Asia value proposition and to articulate the core of who we are: agile, non-hierarchical, self-independent at each site, while remaining closely connected and people oriented. The team coaching was structured, inclusive, and strategically focused. The combination of individual interviews and collective sessions ensured both depth and alignment, and the facilitation created clarity, ownership, and a strong shared identity across a diverse regional leadership group.”
"Oscar partners with us to deliver team coaching for senior leaders on our executive development programmes. The objectives typically include developing an entrepreneurial mindset, strengthening the ability to navigate complexity, and enabling teams to translate learning into clear business plans with actionable recommendations. His approach is pragmatic and business-oriented, ensuring that learning translates directly into performance. His facilitation encourages active participation and deep understanding and appreciation."
“We engaged Oscar for a two-day workshop with the senior leadership of our paint and coatings division, including myself and the CFO. The objectives were to develop a strategy for additional growth, create alignment on strategic choices and required capabilities, and improve collaboration and decision-making. The coaching was focused, commercially grounded, and facilitated in a way that ensured strong engagement from senior leaders. The sessions translated strategic debate into clear decisions and collective commitment and produced a specific strategic proposal identifying the market segments we intend to grow in the coming years.”
“We engaged Sage for a one-day team coaching intervention with our director team to ensure alignment on the company strategy. Through the structured process we achieved significantly greater clarity on our strategic priorities and stronger ownership of the agreed direction. The session translated strategy into clearer commitments, resulting in more agile and efficient execution. The facilitation balanced structure and challenge, enabling open dialogue while keeping the discussion outcome oriented. The session strengthened alignment at the Director level and created tangible shifts in clarity, accountability, and execution discipline.”
“I worked with Oscar over a 12-month executive coaching assignment as I transitioned into a broader commercial role. The work focused on strengthening my communication and presentation skills, becoming more assertive in putting ideas forward, and improving my ability to influence and collaborate across the organization. Over time, this translated into more independent handling of key customer interactions, more proactive contribution of ideas, and greater confidence presenting to larger groups. My manager noted a clear improvement during the formal progress review, and the company has chosen to continue the coaching; this reflects that both my manager and the organization see continued value in the development process.”