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16 January 2026Re/insurance

Mosaic ramps up tax-liability team amid rising demand

Bermuda-based specialty insurer Mosaic Insurance has expanded its transactional tax-liability platform, adding four tax-risk specialists across North America and the UK as demand for the product continues to build.

In the US, Heather Eskey has joined the company as a senior vice president, supporting on tax risks in North America. She brings underwriting experience from her previous role leading Chubb’s transactional risk tax group. She also served as a tax attorney at top global law and accounting firms, and as in-house corporate tax counsel at AIG.

Caleb Smith also joins Mosaic’s New York office as a vice president in the tax-liability unit. He previously worked as a tax attorney with law firm Davis Polk Wardwell.

Ze’ev Deutsch, who joined Mosaic’s New York office in 2022, has stepped up to SVP in the tax team. Previously an attorney at Fried, Frank, Harris, Shriver & Jacobson, he is experienced in evaluating tax risks in the US and Canada, in areas ranging from tax credits for investment in renewable energy projects and characterisation of income from inbound investments to historical treatment of tax positions taken by targets in public M&A transactions. Roktim Kaushik, VP, a former tax attorney at KPMG, also supports the New York-based team.

In the UK, Mosaic’s international tax underwriting team has welcomed Byron Thomas, SVP, and Li Hong Gosen , AVP, as tax underwriters. Thomas, a barrister, previously led the international tax underwriting team at Themis Underwriting. Prior, he spent more than 10 years as an international and M&A tax advisor at EY, most recently as a director based in London.

Gosen comes to tax underwriting after M&A tax lawyer roles at KPMG and EY in the Netherlands and London. In those posts, she specialised in cross-border structures and transactions for listed, large cap, and mid-market businesses.

Mosaic’s tax team now comprises nine specialists who focus on a range of M&A-related and standalone tax risks, for which the product indemnifies policyholders against financial loss, providing certainty during deal-making. 

Bill Monat, global head of transactional liability, said: “Growth of our global tax business is a strategic priority for Mosaic as we further build our market-leading underwriting capabilities to meet demand in this growing sector. This product class requires deep expertise to evaluate risk, and we’re thrilled to have more exceptional specialists join our team.”

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