X0609 4 2026-10-20 0 0000826675 DYNEX CAPITAL INC DX 0001283563 BOSTON BYRON L false C/O DYNEX CAPITAL, INC. 140 EASTSHORE DRIVE, SUITE 100 GLEN ALLEN VA 23059 1 1 0 0 Co-CEO & Chairman of the Board 0 Common Stock 2026-10-20 4 P 0 9180 10.89 A 892747 D Common Stock 3095 I By spouse and son jointly Common Stock 1500 I By son Common Stock 1500 I By 2nd son The price reported is a weighted average. These shares were purchased in multiple transactions at prices ranging from $10.87 to $10.92, inclusive. The Reporting Person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range. Includes unvested restricted stock units. /s/ Kathy E. Rhodes, as attorney-in-fact for Byron L. Boston 2026-10-21