0000883948 us-gaap:SeriesAPreferredStockMember 2026-10-20 2026-10-20 0000883948 us-gaap:CommonStockMember 2026-10-20 2026-10-20 0000883948 2026-10-20 2026-10-20 0000883948 false 8-K 2026-10-20 ATLANTIC UNION BANKSHARES CORPORATION VA 001-39325 54-1598552 4300 Cox Road Glen Allen VA 23060 (804) 633-5031 false false false false Common Stock, par value $1.33 per share AUB NYSE Depositary Shares, Each Representing a 1/400th Interest in a Share of 6.875% Perpetual Non-Cumulative Preferred Stock, Series A AUB.PRA NYSE false