UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 8-K

CURRENT REPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of report (Date of earliest event reported: May 23, 2018

JEFFERIES FINANCIAL GROUP INC.

(Exact name of registrant as specified in its charter)

Registrant’s telephone number, including area code: 212-460-1900

(Former name or former address, if changed since last report)

Leucadia National Corporation

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§240.12b-2 of this chapter). Emerging growth company:  ☐

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.   ☐

On May 23, 2018, our shareholders voted to approve an amendment to our Certificate of Incorporation changing our corporate name from Leucadia National Corporation to Jefferies Financial Group Inc. Our By-Laws will also reflect our new name. Our name change to Jefferies Financial Group was effective May 23, 2018.

We held our Annual Meeting of Shareholders on May 23, 2018.

Our shareholders approved our amendment to our Certificate of Incorporation changing our corporate name from Leucadia National Corporation to Jefferies Financial Group Inc.

The vote on our name change to Jefferies Financial Group Inc. was approved by our shareholders based on total shares outstanding on the record date. Voting results were as follows:

Our incumbent directors were re-elected to our Board of Directors and received the following votes:

The advisory vote on executive compensation was approved by our shareholders. Voting results were as follows:

Our shareholders ratified the selection of Deloitte & Touche LLP as our independent auditors for the year ended December 31, 2018. Voting results were as follows:

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.