X0508 4 2026-03-01 0 0001620459 James River Group Holdings, Inc. JRVR 0001473976 D'Orazio Frank C/O JAMES RIVER GROUP HOLDINGS, INC. 1414 RALEIGH ROAD, SUITE 405 CHAPEL HILL NC 27517 1 1 0 0 Chief Executive Officer 0 Common Stock 2026-03-01 4 F 0 2332 7 D 414292 D Common Stock 2026-03-01 4 F 0 6030 7 D 408262 D The shares disposed of were withheld by James River Group Holdings, Inc. for payment of the tax liability incident to the vesting of 6,209 restricted share units on March 1, 2026. The shares disposed of were withheld by James River Group Holdings, Inc. for payment of the tax liability incident to the vesting of 16,439 restricted share units on March 1, 2026. /s/ Jeanette L. Miller, Attorney-in-fact for Frank D'Orazio 2026-03-03