Form 4 Filing for Jefferies Financial Group Inc.

Michael O'Kane, a director at Jefferies Financial Group Inc., acquired 538 shares of Common Stock on May 29, 2026, at a price of $52.72 per share. This acquisition was part of a dividend reinvestment and is considered an exempt transaction under Rule 16b-3(d)(1) & (2). Following this transaction, O'Kane now holds 132,492 shares of Common Stock. The filing, designated as Form 4, was signed by Joanna Jia under power of attorney.