RenaissanceRe 2025 Sustainability Report A Message From Our CEO About This Report Sustainability Strategy Our Portfolio Our Partnerships Our People Our Operations Our Communities Our Governance Metrics and Performance Looking Ahead Appendix 14 Technology-Enabled Risk Insight We develop our own view of risk through our REMS© exposure management system, whichallows us to generate differentiated risk distributions and incorporate perils and exposures that may not be fully captured in commercially available models. This platform connects our scientific research, underwriting and portfolio management processes, enabling consistent and data-driven decision- making across the organization. It also allows our underwriters to test how individual transactions affect portfolio risk in real time, supporting more informed decisions on pricing, capacity and risk selection. Underwriting Our Underwriting Approach Underwriting is where our view of risk is applied in practice. We aim to construct diversified portfolios and deploy capital with discipline to maximize risk-adjusted returns across market cycles. Our approach integrates risk selection, portfolio construction and capital allocation within a consistent framework, actively managing exposures to maintain balance across perils, regions and counterparties. Climate-related risks, including physical, transition and liability risks, are incorporated into underwriting through models, analytics and scientific research. These insights inform how we assess exposures, structure programs and price risk. Decisions are guided by defined risk tolerances and portfolio constraints, supporting disciplined capital deployment. RenaissanceRe’s underwriting approach does not typically rely on broad, sector-wide underwriting exclusions. Instead, risks are assessed on a case- by-case basis, informed by scientific analysis, underwriting discipline and portfolio considerations. We believe this approach supports a considered and analytically grounded approach to risk selection while enabling us to engage with clients on evolving sustainability risks, including those associated with the transition to a lower carbon economy. Through disciplined underwriting, we aim to manage the cycle and allocate our capital to the business that will generate the best returns. Portfolio construction is a continuous process that has been bolstered by our ability to participate broadly across our clients’ portfolios. We aim to be a provider of first choice and a trusted partner to our customers to help them manage their risk across portfolios and market cycles. In Focus: Underwriting Our underwriting is powered by proprietary risk science — combining data, modeling and engineering expertise to better understand and price complex risks. Our integrated platform enables us to match risk with the most efficient form of capital, deploying both our own balance sheet and third-party capital.