Argenta Syndicate Management Ltd, a Lloyd’s managing agency, has announced the appointment of Simon Saunders as Unit Head Marine Reinsurance, effective July 2026.
In his new role, Saunders will be responsible for underwriting Argenta’s marine reinsurance treaty portfolio, strengthening the business’s position in international markets and building on its established broker relationships.
He will report to Heath Callan, Argenta Divisional Head of Energy and Marine, and will work closely with Stephen Haynes, current Unit Head Marine Reinsurance, to ensure a smooth transition ahead of Haynes’ planned retirement in January 2027.
Saunders brings more than 25 years of reinsurance underwriting experience across marine, energy, aviation, and specialty treaty lines.
He joins Argenta from Swiss Re, where he most recently served as Senior Marine Underwriter, focusing on treaty placements and portfolio evaluation within the London market.
Prior to that, Saunders held several senior leadership roles at Barbican Syndicate 1955 (later Arch), including Head of Reinsurance, Head of Marine Division, and Head of Short Tail Lines, overseeing globally diversified portfolios across multiple specialty classes.
Earlier in his career, he was a Partner at JLT Re and held roles at Aon and Agnew Higgins Pickering.
Callan said, “Simon’s extensive knowledge and many years of senior underwriting experience in Foreign Market Treaty business make him a strong fit for this role. He will work closely with the team to ensure continuity in our treaty portfolio, while bringing additional depth and experience to this important area of the business.”
Ian Burford, Argenta Underwriting Director, added, “We are pleased to welcome Simon to Argenta. He brings significant technical expertise and international experience, along with a strong track record in portfolio management. His appointment further strengthens our underwriting capability in the treaty market.”
