0001620459 2021-10-26 2021-10-26 0001620459 false 8-K 2021-10-26 JAMES RIVER GROUP HOLDINGS, LTD. D0 001-36777 98-0585280 Wellesley House 2nd Floor 90 Pitts Bay Road Pembroke HM08 BM 441 278-4580 false false false false Common Shares, par value $0.0002 per share JRVR NASDAQ false