About Us
Why IMIANZ exists, origins, and mission.
Our Story
The Interim Management Institute of Australia and New Zealand (IMIANZ) exists to champion and support the value of interim leadership. We represent a community of highly skilled, senior executives who step into organisations at pivotal moments—whether to bridge leadership gaps, drive transformation, manage mergers and acquisitions, or lead through complex restructures and turnarounds. Our members are situational leaders: experienced, adaptable, and focused on delivering results without compromise.
Consulting Partners at a Recent Meeting in Europe
IMIANZ provides a professional home for interim managers and those who engage them. We offer ongoing development, accreditation, and access to exclusive benefits, alongside opportunities to connect with peers, sponsors, and organisations seeking trusted leadership solutions. By promoting best practice and fostering excellence, IMIANZ ensures interim management is recognised as a vital force for organisational success across Australia and New Zealand.
Champion interim management
What we do
Leadership Team
Leadership & Governance
Interim leaders who are Experienced, Overqualified and Wise. IMIANZ supports executives and organisations with development, benefits, and trusted leadership solutions.
Andrew Thoseby BA Hons, MRCSA, MAHRI, FIML
CEO and Director at 1st Executive Global Board Director at NPAworldwide Non-Executive Chair – IXPA effective Jan 2026.
30+ years’ corporate and entrepreneurial experience across retail, services, technology, FMCG, and global markets.
Fellow – Institute of Managers and Leaders (FIML)
Member – Australian Human Resources Institute (MAHRI)
Member RCSA (MRCSA)
Suzanne Whitmarsh MAHRI, FIML
Founder and Managing Director at 1st Executive
Suzanne has been a successful Human Resources professional for the last 25 years. Her main focus at 1st Executive is on executive recruitment, professional and personal development, coaching and mentoring, employment practices, team performance and facilitation. Suzanne is also a double syndicate Chair at the CEO Institute
Fellow – Institute of Managers and Leaders (FIML)
Member – Australian Human Resources Institute (MAHRI)
IMIANZ champions interim managers and leaders who are Experienced, Overqualified and Wise. We provide professional development, accreditation, and exclusive benefits while promoting the value of interim leadership across Australia and New Zealand.
Accounting Services
Values
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