Arch Insurance Australia and Willis have announced separate leadership changes, with Arch adding an underwriter to its Southern Region professional indemnity (PI) team and Willis splitting its Victorian construction leadership into two distinct roles.
Arch Insurance Australia has brought on Arion Reuter (pictured) as senior professional indemnity underwriter, according to a June 2 announcement. The appointment takes effect immediately. Reuter is stationed in Melbourne and will report to Carey Sturgiss, who oversees PI underwriting for the Southern Region. His responsibilities centre on growing the PI book across Tasmania, South Australia, and Western Australia. The Southern Region PI team writes coverage for a range of occupational groups, among them accountants, consultants, engineers, lawyers, and design and construction professionals, as well as environmental professionals.
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Before joining Arch, Reuter was a PI underwriter at Newline Group. He previously held a financial lines underwriting position at Chubb and, earlier in his career, worked on the broking side at IBG Insurance Brokers. Sturgiss said of the hire: “We’re delighted to welcome Arion to our PI team. His extensive market knowledge and well-established network of regional broker relationships make him ideally positioned to support the continued growth of our relevance and development of Arch’s Southern Region PI portfolio.”
Willis, which operates as part of WTW, announced on June 1 that it is making two changes to how its Victorian construction practice is led, with both taking effect Aug. 25, 2026. Vinh Ngo has been named head of construction, Victoria, a role that carries day-to-day leadership of the team. Bill Callan, who has run the Victorian construction practice since 2019, is stepping into a newly created position titled director, strategic client management. That role is focused on senior-level engagement with the firm’s key Victorian accounts.
Ngo’s background includes more than 15 years working across construction and real estate insurance at a range of brokers and companies. His previous employers include Lockton, Honan, Marsh, Toll Group, and Aon. He was most recently at Lockton, where he held the positions of client director and Victorian manager within the global real estate & construction practice. Callan’s tenure at Willis spans 13 years, during which he built the Victorian construction team into one of its current forms. His work has covered major infrastructure projects, complex programme structuring, and the management of long-term client relationships. Under the restructure, he will continue working with the firm’s most significant Victorian clients, with his time redirected toward advisory and technical work rather than team management.
Callan said of the change: “After 13 years at Willis, I am genuinely excited about this next chapter. The new role gives me the opportunity to spend more time alongside the clients I have worked with for many years, doing the technical and advisory work I love most. I am equally delighted to welcome Vinh to the team. He is an outstanding appointment, and I look forward to working closely with him as he takes our Victorian team forward. Our clients can expect the same level of service, the same faces, and even greater depth of support from us.”
Iain Drennan, who leads construction for Asia-Pacific and LATAM at Willis, addressed both sides of the transition in a separate statement. “I would like to thank Bill for his incredible leadership of our Victorian construction team over the past 13 years. The platform he has built is the reason this is such an exciting next chapter for our business. With Bill taking on the role of director, strategic client management, it will allow him to do more of what he does best, working directly with our most important clients,” Drennan said. On Ngo’s arrival, Drennan said: “At the same time, I am thrilled to welcome Vinh to Willis. Vinh’s capability, market reputation, and commercial mindset align exactly with where we are taking this business. Together with Bill and the wider team, I am confident Vinh will lead our Victorian construction business through its next phase of growth.”
