X0609 4 2026-11-09 0 0001620459 James River Group Holdings, Inc. JRVR 0002007137 McCoy James Paul false C/O JAMES RIVER GROUP HOLDINGS, INC. 1414 RALEIGH ROAD, SUITE 405 CHAPEL HILL NC 27517 0 1 0 0 Senior Vice President 0 Common Stock 2026-11-09 4 F 0 1163 3.77 D 66763 D The shares disposed of were withheld by James River Group Holdings, Inc. for payment of the tax liability incident to the vesting of 3,394 restricted share units on November 9, 2026. /s/ Jeanette Miller, Attorney-in-Fact for James P. McCoy 2026-11-12