AM Best Warns of Tightening Pressure in Directors & Officers Liability Market

AM Best, the leading insurance-focused credit rating agency, has issued a cautionary assessment of the directors and officers (D&O) liability insurance market, warning that the segment is poised to tighten after an extended period of softening rates and abundant capacity. The D&O market — which provides liability coverage for corporate executives and board members against claims arising from their management decisions — has been one of the most competitive commercial insurance lines in recent years, with rates falling steadily as new capacity entered the market.

According to AM Best's analysis, several converging pressures are now threatening D&O profitability and are likely to prompt a market correction. Rising litigation activity is a primary driver, with securities class-action filings and shareholder derivative suits increasing as market volatility, corporate governance disputes, and the heightened scrutiny of executive decision-making create more grounds for claims. Elevated settlement costs — reflecting the broader social-inflation environment of expanding jury awards, aggressive plaintiff litigation, and growing third-party litigation funding — are pushing up the severity of D&O claims even where frequency remains stable.

The warning fits within a broader pattern of casualty-line stress that has been a recurring theme in 2026 industry analysis. While property and personal auto lines have delivered record profitability (US P&C insurers posted an 89.5 combined ratio in Q1 2026), casualty and liability lines have been the persistent area of concern. S&P Global Market Intelligence specifically flagged that 'other liability' loss ratios reached concerning levels, and the same social-inflation forces pressuring commercial auto, general liability, and umbrella coverage are now bearing down on the D&O segment.

The geopolitical and macroeconomic environment compounds the risk. The Middle East conflict, financial market volatility, and economic uncertainty create conditions in which corporate distress, restructurings, and bankruptcies become more likely — each of which can trigger D&O claims. Additionally, emerging risk areas such as AI governance, cybersecurity oversight, climate-related disclosure, and ESG-related litigation are expanding the universe of potential D&O exposures that boards and their insurers must contend with.

For corporate buyers of D&O coverage, AM Best's warning signals that the favourable pricing and broad terms of recent years may be coming to an end, with renewals likely to feature firmer pricing, tighter terms, and more rigorous underwriting scrutiny. For D&O insurers, the analysis underscores the need for disciplined underwriting, careful reserve management, and selective risk appetite as the line transitions from a buyer's market toward a more balanced or hardening environment. The D&O market's trajectory will be an important barometer of broader casualty-line health through the remainder of 2026.