Board Members and Executive Management


Lachlan McIntosh

Executive Chairman

B.Comm, Chartered Accountant

Lachlan brings extensive expertise to Onterran in his role as Executive Chairman. He has more than 25 years’ experience in managing corporate finance, mergers and acquisitions in the mining services, real estate and retirement accommodation industries. Lachlan’s track record in business turnaround and profit enhancement is evidenced by his pivotal involvement of some of Queensland’s largest insolvencies, including Fincorp Investments Ltd and Dreamworld. Lachlan is also a Non-Executive Director of Eureka Group Holdings (ASX: EGH).

Heather Gardner

Non-Executive Director


Heather has almost 30 years’ experience in company management, the majority of which has been spent in the construction industry. She has an impressive background in senior executive roles with some of Australia’s most successful companies, including FK Gardner Group, CSR and ANZ Banking Group. 

Pat McMahon



Pat is a qualified Chartered Accountant with more than 15 years' experience in the corporate sector. He has held senior finance roles with leading international organisations across many industries, including mining and construction. Pat’s high-level financial expertise is complemented by his analytical, strategic and managerial skills. His in-depth commercial insight and knowledge of corporate governance makes him an excellent guardian of Onterran's financial integrity.

David Rosenblum

Non-executive Director

David has over 20 years' of corporate advisory experience specialising in corporate turnaround and development. He holds a Bachelor of Commerce degree from the University of Queensland and has enjoyed substantial experience across many industries, particularly in retail, services industries, marine, manufacturing, new technology and franchising.