Global specialty insurer Mosaic Insurance has named Toby Smith as Americas Chief Executive Officer (CEO), effective immediately, based in New York.
As part of the firm’s leadership team, Smith will be tasked with spearheading market engagement and profitable growth across the US, Canada, and the wider Americas region.
Additionally, he will direct new product development and oversee Americas-focused lines of business, including the company’s three largest divisions, namely transactional liability, cyber, and environmental liability.
Mitch Blaser, Co-CEO, Mosaic, commented, “Toby is a longtime colleague with an exceptional track record that has seen him build the largest environmental business in the market.
“He will be instrumental in continuing our growth trajectory and accelerating our strategic ambitions across specialty product lines globally and in the critical US region. As he joins our impressive team, we look forward to creating significant value for our stakeholders, partners, and customers.”
Smith has more than two decades of specialty insurance experience, most recently as Chief Underwriting Officer, North America specialty lines, for Liberty Mutual.
He previously worked with Mosaic’s leadership at Ironshore Inc. from 2009, launching its environmental business, and holding various roles, including president of environmental and president of E&S casualty.
Smith began his career at AIG, managing a team in its environmental claims and coverage unit, eventually moving to underwriting.
Mark Wheeler, Co-CEO, Mosaic, added, “Our unique underwriting agency structure and syndicated products are delivering an impact across global markets, and the appointment of a high-caliber leader like Toby demonstrates our commitment to driving further profitable expansion through the Americas.
“As we gather momentum, he is the right person at the right time to scale up our business and help us seize the great opportunities ahead, and we look forward to working with him again.”
Smith commented, “I’m thrilled to join Mosaic at this stage of its tremendous growth, and I look forward to working with its dynamic team—including Mitch, Mark, and other former colleagues—to deliver expansion, innovation, and success.
“Mosaic is a young company that in a short time span has won recognition and market respect for its differentiated model, leading underwriters, and highly specialized business lines. The opportunity to join that journey and help shape its roadmap for the future is energizing.”





