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Securities registered pursuant to Section 12(b) of the Act:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter).

Emerging growth company ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. ☐

On March 3, 2025, the Board of Directors (the “Board”) of James River Group Holdings, Ltd. (the “Company”) approved the use of discretion to increase the cash incentive award amounts for the 2024 performance period under the Company’s Short-Term Incentive Plan (the “STI Plan”) above those that would have otherwise been payable based on the actual achievement of the applicable performance targets under the plan. The Board’s approval follows the recommendation of members of the Compensation and Human Capital Committee to exercise such discretion.

The exercise of discretion, which is permitted under the STI Plan, involved the Company’s Adjusted EBIT and group Adjusted Combined Ratio metrics of the STI Plan, which were negatively impacted by multiple strategic activities undertaken by the Company. The strategic activities included the Company’s exploration of strategic alternatives and the execution of two retroactive reinsurance transactions on the business of the Company’s Excess & Surplus Lines segment (the “E&S ADCs”). Specifically, the calculation of the Adjusted EBIT and, except with respect to the Excess & Surplus Lines segment leader, the group Adjusted Combined Ratio performance measures were adjusted to exclude (i) actual expenses pertaining to the strategic activities, (ii) the reinsurance premiums paid for the E&S ADCs, and (iii) the aggregate value of employee retention awards paid in light of the Company’s exploration of strategic alternatives, in each case to the extent that such items would have been included in the calculation of the 2024 Adjusted EBIT and group Adjusted Combined Ratio performance measures. The segment Adjusted Combined Ratio performance goals applicable to segment business leaders were not adjusted.

Below are the amounts of modified payouts for the executive officers who are expected to be the named executive officers in our 2025 compensation disclosure and analysis:

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.