Filed Pursuant to Rule 433
Registration No. 333-271881

Jefferies Financial Group Inc.

Market Linked Securities

Market Linked Securities— Auto-Callable with Fixed Percentage Buffered Downside

Principal at Risk Securities Linked to the S&P 500^® Index due February 4, 2027

Term Sheet to Preliminary Pricing Supplement dated December 28, 2023

Summary of Terms

	Issuer:		Jefferies Financial Group Inc.
	Market Measure:		S&P 500^® Index (the “Index”)
	Pricing Date*:		January 30, 2024
	Issue Date*:		February 2, 2024
	Face Amount and Original Offering Price:		$1,000 per security
	Automatic Call:		If the closing level of the Index on any call date is greater than or equal to starting level, the securities will be automatically called for the face amount plus the call premium applicable to that call date.

Call Dates* and Call	Call Date	Call Premium†
Premiums:	February 3, 2025	At least 7.50% of the face amount
	February 2, 2026	At least 15.00% of the face amount
	February 1, 2027 (the “final calculation day”)	At least 22.50% of the face amount
	† to be determined on the pricing date.

	Call Settlement Date:		Three business days after the applicable call date.
	Maturity Payment Amount (per security) if the securities are not automatically called:		• if the ending level is less than the starting level, but greater than or equal to the threshold level: $1,000; or • if the ending level is less than the threshold level: $1,000 + [$1,000 × (index return + buffer amount)]
	Stated Maturity Date*:		February 4, 2027
	Starting Level:		The closing level of the Index on the pricing date
	Ending Level:		The closing level of the Index on the calculation day
	Threshold Level:		90% of the starting level
	Buffer Amount:		10%
	Index Return:		(ending level – starting level) / starting level
	Calculation Agent:		Jefferies Financial Services Inc. (“JFSI”), a wholly owned subsidiary of Jefferies Financial Group Inc.
	Denominations:		$1,000 and any integral multiple of $1,000
	Agents Discount**:		Up to 2.575%; dealers, including those using the trade name Wells Fargo Advisors (“WFA”), may receive a selling concession of up to 2.00% and WFS may pay 0.075% of the agent’s discount to WFA as a distribution expense fee
	CUSIP:		47233WCW7
	Material Tax Consequences:		See the preliminary pricing supplement.

*subject to change

** In addition, selected dealers may receive a fee of up to 0.10% for marketing and other services

Hypothetical Payout Profile***

***assumes a call premium equal to the lowest possible call premium that may be determined on the pricing date.

If the securities are not automatically called and the ending level is less than the threshold level, you will have 1-to-1 downside exposure to the decrease in the level of the Index in excess of the buffer amount and will lose some, and possibly up to 90%, of the face amount of your securities at maturity.

Any positive return on the securities will be limited to the applicable call premium, even if the closing level of the Index on the applicable call date significantly exceeds the starting level. You will not participate in any appreciation of the Index beyond the applicable call premium.

We estimate that the value of each security on the pricing date will be approximately $966.25, or within $30.00 of that estimate. See “Estimated Value of the Securities” in the accompanying preliminary pricing supplement for more information.

Preliminary Pricing Supplement: https://www.sec.gov/Archives/edgar/data/96223/000114036123059894/ef20017579_424b2.htm

The securities have complex features and investing in the securities involves risks not associated with an investment in conventional debt securities. See “Selected Risk Considerations” in this term sheet and the accompanying preliminary pricing supplement and “Risk Factors” in the accompanying product supplement.

This introductory term sheet does not provide all of the information that an investor should consider prior to making an investment decision.

Investors should carefully review the accompanying preliminary pricing supplement, product supplement, prospectus supplement and prospectus before making a decision to invest in the securities.

NOT A BANK DEPOSIT AND NOT INSURED OR GUARANTEED BY THE FDIC OR ANY OTHER GOVERNMENTAL AGENCY

Selected Risk Considerations

The risks set forth below are discussed in detail in the “Selected Risk Considerations” section in the accompanying preliminary pricing supplement and the “Risk Factors” section in the accompanying product supplement. Please review those risk disclosures carefully.

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If The Securities Are Not Automatically Called And The Ending Level Is Less Than The Threshold Level, You Will Lose Some, And Possibly Up To 90%, Of The Face Amount Of Your Securities At Maturity.

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No Periodic Interest Will Be Paid On The Securities.

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The Potential Return On The Securities Is Limited To The Call Premium.

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The Securities Are Subject To A Potential Automatic Call, Which Would Limit Your Ability To Receive Further Payment On The Securities.

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A Call Settlement Date Or The Stated Maturity Date May Be Postponed If A Call Date Is Postponed.

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The Tax Consequences Of An Investment In Your Securities Are Uncertain.

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The Securities Are Subject To Our Credit Risk.

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The Estimated Value Of The Securities On The Pricing Date, Based On Jefferies LLC Proprietary Pricing Models At That Time And Our Internal Funding Rate, Will Be Less Than The Original Offering Price.

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The Estimated Value Of The Securities Was Determined For Us By Our Subsidiary Using Proprietary Pricing Models.

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The Estimated Value Of The Securities Would Be Lower If It Were Calculated Based On Our Secondary Market Rate.

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The Estimated Value Of The Securities Is Not An Indication Of The Price, If Any, At Which WFS Jefferies LLC Or Any Other Person May Be Willing To Buy The Securities From You In The Secondary Market.

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The Value Of The Securities Prior To Stated Maturity Will Be Affected By Numerous Factors, Some Of Which Are Related In Complex Ways.

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The Securities Will Not Be Listed On Any Securities Exchange And The Issuer Does Not Expect A Trading Market For The Securities To Develop.

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Any Payments On The Securities And Whether The Securities Are Automatically Called Will Depend Upon The Performance Of The Index And Therefore The Securities Are Subject To The Risks Associated With The Index, As Discussed In The Accompanying Pricing Supplement and Product Supplement.

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Our Economic Interests And Those Of Any Dealer Participating In The Offering Are Potentially Adverse To Your Interests.

The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus in that registration statement and other documents that the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC website at www.sec.gov. Alternatively, the issuer, any agent or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling your financial advisor or by calling Jefferies LLC.

Wells Fargo Advisors is a trade name used by Wells Fargo Clearing Services, LLC and Wells Fargo Advisors Financial Network, LLC, members SIPC, separate registered broker-dealers and non-bank affiliates of Wells Fargo Finance LLC and Wells Fargo & Company.