Convex Group Limited, the international specialty insurer and reinsurer, has announced a new long-term ownership structure in which Onex Corporation will take a leading 63% stake and AIG will become a strategic minority investor with a 35% equity interest.
With the exception of management, Convex’s founding equity investors, including Onex’s Partners V private equity fund, will sell their stakes in full, in a transaction that values Convex’s common equity at $7 billion.
In addition to its equity investment in Convex, AIG will reportedly write a whole account quota share of Convex’s business from 1st January 2026.
As part of the broader strategic relationship, AIG will also acquire a 9.9% ownership stake in Onex Corporation for approximately $646 million.
Furthermore, AIG will invest $2 billion over three years in a diversified set of Onex Corporation’s investment funds with preferred access.
“This new relationship is a strong endorsement of the quality of Convex’s leadership and underwriting capabilities,” Convex explained.
Onex and AIG will both have representation on the Convex board, though the firm will continue to operate an independent strategy and underwriting approach.
These transactions are subject to customary regulatory approvals, with closing expected in the first half of 2026.
Stephen Catlin, Chairman of Convex, commented, “In six years, the team at Convex has built an extraordinary business. We have become a major player in global specialty insurance and reinsurance, with annual premium income of up to $6 billion and operations in a range of global jurisdictions.
“We’ve known Peter Zaffino for over 20 years in numerous leadership roles. We greatly admire the contribution he has made to the industry as a whole and, together with the outstanding team he has built at AIG, the successful execution of his strategic vision, positioning AIG for growth and delivering attractive risk-adjusted returns for AIG shareholders.
“This transaction secures the long-term independence of Convex and presents a range of exciting strategic opportunities.
“We would like to thank our founding shareholders, including Onex, for their unwavering support in establishing and growing the business, and our other supporters within the insurance market. Without them, we would not be where we are today.”
Paul Brand, CEO of Convex, said, “This is a hugely exciting development for Convex. The Convex team have worked incredibly hard over the last six years to build a world-renowned insurance company, and we see this transaction as the start of the next chapter in our journey.
“We are delighted to continue our productive partnership with Onex, and that they have decided to make this considerable investment from their own balance sheet. We are also excited to begin a new relationship with AIG. This transaction positions us better than ever to service our clients and brokers and take advantage of future market opportunities.”
Bobby Le Blanc, CEO of Onex, noted, “Having been a partner to Convex through our private equity funds and balance sheet since 2019, we are delighted to be making a long-term strategic investment in the business, and to welcome AIG as a strategic investor.
“In a small number of years, the Convex team, led by Stephen and Paul, has created a leading specialty insurance and reinsurance business writing the most complex risks across the globe. We are excited to work with the Convex team to deliver sustainable long-term growth, leading underwriting returns, and to compound capital for Onex shareholders.”
Peter Zaffino, Chairman & CEO, AIG, added, “This is a very unique opportunity to invest in a top-performing global specialty company that we believe will drive incremental earnings growth for AIG.
“AIG’s investment reflects our confidence in Convex’s ability to consistently deliver outstanding results, strong returns and sustained revenue growth. I have followed the Convex story closely since the Company’s formation in 2019, and I have known its founders, Stephen Catlin, Executive Chairman, and Paul Brand, CEO, for over 20 years.
“I have deep respect for their expertise, leadership and the culture they have built at Convex. Stephen and Paul have earned a reputation for building exceptional underwriting teams, and this is reflected in the company’s impressive performance.
“Through this strategic relationship, AIG will support Stephen and Paul’s continued independent management of Convex.
“As we look to the future, we will utilise our significant financial flexibility to support Convex through a meaningful equity investment and a whole account quota share structure that allows AIG to take part in the success of Convex’s profitable portfolio, which we believe has significant potential for further growth.”
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