The securities have complex features and investing in the securities involves risks not associated with an investment in conventional debt securities. See “Summary Risk Factors” beginning on page PS-7, “Risk Factors Relating to the Securities” beginning on page EA-7 of the accompanying product supplement and “Risk Factors” beginning on page S-1 of the accompanying prospectus supplement.

Neither the Securities and Exchange Commission (the “SEC”) nor any state securities commission has approved or disapproved of the securities or determined that this pricing supplement or the accompanying product supplement, prospectus supplement and prospectus are truthful or complete. Any representation to the contrary is a criminal offense.

The securities are unsecured debt obligations issued by Citigroup Global Markets Holdings Inc. and guaranteed by Citigroup Inc. All payments due on the securities are subject to the credit risk of Citigroup Global Markets Holdings Inc. and Citigroup Inc. None of Wells Fargo Securities, LLC (“Wells Fargo”) or any of its affiliates will have any liability to the purchasers of the securities in the event Citigroup Global Markets Holdings Inc. defaults on its obligations under the securities and Citigroup Inc. defaults on its guarantee obligations. The securities are not bank deposits and are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency, nor are they obligations of, or guaranteed by, a bank.

(1) On the date of this pricing supplement, the estimated value of the securities is $938.40 per security, which is less than the public offering price. The estimated value of the securities is based on Citigroup Global Market Inc.’s (“CGMI”) proprietary pricing models and our internal funding rate. It is not an indication of actual profit to CGMI or other of our affiliates, nor is it an indication of the price, if any, at which any person may be willing to buy the securities from you at any time after issuance. See “Valuation of the Securities” in this pricing supplement.

(2) CGMI, an affiliate of Citigroup Global Markets Holdings Inc., as the lead agent for the offering, has agreed to sell the securities to Wells Fargo, as agent. Wells Fargo will receive an underwriting discount and commission of 3.10% ($31.00) for each security it sells. Wells Fargo will pay selected dealers, which may include Wells Fargo Advisors (“WFA”) (the trade name of the retail brokerage business of its affiliates, Wells Fargo Clearing Services, LLC and Wells Fargo Advisors Financial Network, LLC), a fixed selling commission of 2.25% ($22.50) for each security they sell. In addition to the selling commission allowed to WFA, Wells Fargo will pay $0.75 per security of the underwriting discount and commission to WFA as a distribution expense fee for each security sold by WFA. The total underwriting discount and commission and proceeds to Citigroup Global Markets Holdings Inc. shown above give effect to the actual underwriting discount and commission provided for the sale of the securities. See “Supplemental Plan of Distribution” below and “Use of Proceeds and Hedging” in the accompanying prospectus for further information regarding how we have hedged our obligations under the securities.

(3) In respect of certain securities sold in this offering, CGMI may pay a fee of up to $4.00 per security to selected securities dealers in consideration for marketing and other services in connection with the distribution of the securities to other securities dealers.

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

The terms of the securities are set forth in the accompanying product supplement, prospectus supplement and prospectus, as supplemented by this pricing supplement. The accompanying product supplement, prospectus supplement and prospectus contain important disclosures that are not repeated in this pricing supplement. For example, the accompanying product supplement contains important information about how the closing value of the underlying will be determined and other specified events with respect to the underlying. It is important that you read the accompanying product supplement, prospectus supplement and prospectus together with this pricing supplement in deciding whether to invest in the securities. Certain terms used but not defined in this pricing supplement are defined in the accompanying product supplement.

When we refer to “we,” “us” and “our” in this pricing supplement, we refer only to Citigroup Global Market Holdings Inc. and not to any of its affiliates, including Citigroup Inc.

You may access the product supplement and prospectus supplement and prospectus on the SEC website www.sec.gov as follows (or if such address has changed, by reviewing our filings for the relevant date on the SEC website):

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

The securities are not designed for, and may not be a suitable investment for, investors who:

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

On the maturity date, you will receive a cash payment per security (the payment at maturity) calculated as follows:

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

The diagram below illustrates your payment at maturity for a range of hypothetical underlying returns. Your actual return will depend on the actual final underlying value and whether you hold your securities to maturity.

Investors in the securities will not receive any dividends with respect to the underlying. The diagram below does not show any effect of lost dividend yield over the term of the securities. See “Summary Risk Factors—You Will Not Receive Dividends Or Have Any Other Rights With Respect To The Underlying” below.

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

An investment in the securities is significantly riskier than an investment in conventional debt securities. The securities are subject to all of the risks associated with an investment in our conventional debt securities (guaranteed by Citigroup Inc.), including the risk that we and Citigroup Inc. may default on our obligations under the securities, and are also subject to risks associated with the underlying. Accordingly, the securities are suitable only for investors who are capable of understanding the complexities and risks of the securities. You should consult your own financial, tax and legal advisors as to the risks of an investment in the securities and the suitability of the securities in light of your particular circumstances.

The following is a summary of certain key risk factors for investors in the securities. You should read this summary together with the more detailed description of risks relating to an investment in the securities contained in the section “Risk Factors Relating to the Securities” beginning on page EA-7 in the accompanying product supplement. You should also carefully read the risk factors included in the accompanying prospectus supplement and in the documents incorporated by reference in the accompanying prospectus, including Citigroup Inc.’s most recent Annual Report on Form 10-K and any subsequent Quarterly Reports on Form 10-Q, which describe risks relating to the business of Citigroup Inc. more generally.

Unlike conventional debt securities, the securities do not repay a fixed amount of principal at maturity. Instead, your payment at maturity will depend on the performance of the underlying. If the final underlying value is less than the final barrier value, you will lose 1% of the stated principal amount of the securities for every 1% by which the underlying has declined from the initial underlying value. There is no minimum payment at maturity on the securities, and you may lose up to all of your investment.

Unlike conventional debt securities, the securities do not pay interest or any other amounts prior to maturity. You should not invest in the securities if you seek current income during the term of the securities.

Your Return Will Be Limited To The Maximum Return And May Be Lower Than The Return On A Direct Investment In The Underlying.

The opportunity to participate in the possible increases in the value of the underlying through an investment in the securities will be limited because any positive return on the securities will not exceed the maximum return.

You Will Not Receive Dividends Or Have Any Other Rights With Respect To The Underlying.

You will not receive any dividends with respect to the underlying. This lost dividend yield may be significant over the term of the securities. The payment scenarios described in this pricing supplement do not show any effect of lost dividend yield over the term of the securities. In addition, you will not have voting rights or any other rights with respect to the underlying.

Your Payment At Maturity Depends On The Value Of The Underlying On A Single Day.

Because your payment at maturity depends on the value of the underlying solely on the valuation date, you are subject to the risk that the value of the underlying on that day may be lower, and possibly significantly lower, than on one or more other dates during the term of the securities. If you had invested in another instrument linked to the underlying that you could sell for full value at a time selected by you, or if the payment at maturity were based on an average of values of the underlying, you might have achieved better returns.

The Securities Are Subject To The Credit Risk Of Citigroup Global Markets Holdings Inc. And Citigroup Inc.

If we default on our obligations under the securities and Citigroup Inc. defaults on its guarantee obligations, you may not receive anything owed to you under the securities.

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Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

The Securities Will Not Be Listed On Any Securities Exchange And You May Not Be Able To Sell Them Prior To Maturity.

The securities will not be listed on any securities exchange. Therefore, there may be little or no secondary market for the securities. We have been advised that Wells Fargo currently intends to make a secondary market in relation to the securities. However, Wells Fargo may suspend or terminate making a market without notice, at any time and for any reason. If Wells Fargo suspends or terminates making a market, there may be no secondary market at all for the securities because it is likely that Wells Fargo will be the only broker-dealer that is willing to buy your securities prior to maturity. Accordingly, an investor must be prepared to hold the securities until maturity.

The Estimated Value Of The Securities On The Pricing Date, Based On CGMI’s Proprietary Pricing Models And Our Internal Funding Rate, Is Less Than The Public Offering Price.

The difference is attributable to certain costs associated with selling, structuring and hedging the securities that are included in the public offering price. These costs include (i) any selling concessions or other fees paid in connection with the offering of the securities, (ii) hedging and other costs incurred by us and our affiliates in connection with the offering of the securities and (iii) the expected profit (which may be more or less than actual profit) to CGMI or other of our affiliates and/or Wells Fargo or its affiliates in connection with hedging our obligations under the securities. These costs adversely affect the economic terms of the securities because, if they were lower, the economic terms of the securities would be more favorable to you. The economic terms of the securities are also likely to be adversely affected by the use of our internal funding rate, rather than our secondary market rate, to price the securities. See “The Estimated Value Of The Securities Would Be Lower If It Were Calculated Based On Our Secondary Market Rate” below.

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

CGMI derived the estimated value disclosed on the cover page of this pricing supplement from its proprietary pricing models. In doing so, it may have made discretionary judgments about the inputs to its models, such as the volatility of the underlying, the dividend yields on the underlying and interest rates. CGMI’s views on these inputs may differ from your or others’ views, and as an underwriter in this offering, CGMI’s interests may conflict with yours. Both the models and the inputs to the models may prove to be wrong and therefore not an accurate reflection of the value of the securities. Moreover, the estimated value of the securities set forth on the cover page of this pricing supplement may differ from the value that we or our affiliates may determine for the securities for other purposes, including for accounting purposes. You should not invest in the securities because of the estimated value of the securities. Instead, you should be willing to hold the securities to maturity irrespective of the initial estimated value.

The Estimated Value Of The Securities Would Be Lower If It Were Calculated Based On Wells Fargo’s Determination of The Secondary Market Rate With Respect To Us.

The estimated value of the securities included in this pricing supplement is calculated based on our internal funding rate, which is the rate at which we are willing to borrow funds through the issuance of the securities. We expect that our internal funding rate is generally lower than Wells Fargo’s determination of the secondary market rate with respect to us, which is the rate that we expect Wells Fargo will use in determining the value of the securities for purposes of any purchases of the securities from you in the secondary market. If the estimated value included in this pricing supplement were based on Wells Fargo’s determination of the secondary market rate with respect to us, rather than our internal funding rate, it would likely be lower. We determine our internal funding rate based on factors such as the costs associated with the securities, which are generally higher than the costs associated with conventional debt securities, and our liquidity needs and preferences. Our internal funding rate is not an interest rate that is payable on the securities.

Because there is not an active market for traded instruments referencing our outstanding debt obligations, Wells Fargo may determine the secondary market rate with respect to us for purposes of any purchase of the securities from you in the secondary market based on the market price of traded instruments referencing the debt obligations of Citigroup Inc., our parent company and the guarantor of all payments due on the securities, but subject to adjustments that Wells Fargo may deem appropriate.

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

Any such secondary market price will fluctuate over the term of the securities based on the market and other factors described in the next risk factor. Moreover, unlike the estimated value included in this pricing supplement, we expect that any value of the securities determined for purposes of a secondary market transaction will be based on Wells Fargo’s determination of the secondary market rate with respect to us, which will likely result in a lower value for the securities than if our internal funding rate were used. In addition, we expect that any secondary market price for the securities will be reduced by a bid-ask spread, which may vary depending on the

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Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

aggregate stated principal amount of the securities to be purchased in the secondary market transaction, and may be reduced by the expected cost of unwinding related hedging transactions. As a result, it is likely that any secondary market price for the securities will be less than the public offering price.

The Value Of The Securities Prior To Maturity Will Fluctuate Based On Many Unpredictable Factors.

The value of your securities prior to maturity will fluctuate based on the closing value of the underlying, the volatility of the closing value of the underlying, dividend yields on the underlying, interest rates generally, the time remaining to maturity and our and Citigroup Inc.’s creditworthiness, as reflected in our secondary market rate, among other factors described under “Risk Factors Relating to the Securities—Risk Factors Relating to All Securities—The value of your securities prior to maturity will fluctuate based on many unpredictable factors” in the accompanying product supplement. Changes in the closing value of the underlying may not result in a comparable change in the value of your securities. You should understand that the value of your securities at any time prior to maturity may be significantly less than the public offering price.

We Have Been Advised That, Immediately Following Issuance, Any Secondary Market Bid Price Provided By Wells Fargo, And The Value That Will Be Indicated On Any Brokerage Account Statements Prepared By Wells Fargo Or Its Affiliates, Will Reflect A Temporary Upward Adjustment.

The amount of this temporary upward adjustment will steadily decline to zero over the temporary adjustment period. See “Valuation of the Securities” in this pricing supplement.

The KraneShares CSI China Internet ETF Is Subject To Risks Associated With A Single Emerging Market.

The stocks included in the KraneShares CSI China Internet ETF have been issued by companies in a foreign emerging market. Investment linked to the value of non-U.S. stocks involved risks associated with the securities markets in those countries, including risks of volatility in those markets, governmental intervention in those markets and cross-shareholdings in companies in certain countries. Also, there is generally less publicly available information about foreign companies than about U.S. companies that are subject to the reporting requirements of the SEC. Further, non-U.S. companies are generally subject to accounting, auditing and financial reporting standards and requirements and securities trading rules that are different from those applicable to U.S. reporting companies. The prices of securities in foreign markets may be affected by political, economic, financial and social factors in those countries, or global regions, including changes in government, economic and fiscal policies and currency exchange laws. Stocks issued by companies in emerging markets may be subject to heightened risks, including risks of relatively unstable governments, nationalization of businesses, restrictions on foreign ownership, prohibitions on the repatriation of assets and less protection of property rights. The economies of countries with emerging markets may be based on only a few industries, be highly vulnerable to changes in local or global trade conditions and suffer from extreme and volatile debt burdens or inflation rates. Local securities markets may trade a small number of securities and be unable to respond effectively to increases in trading volume, potentially increasing price volatility. Moreover, the economies in such countries may differ favorably or unfavorably from the economy of the United States in such respects as growth of gross national product, rate of inflation, capital reinvestment, resources and self-sufficiency.

Fluctuations In Exchange Rates Will Affect The Closing Value Of The KraneShares CSI China Internet ETF.

Because the KraneShares CSI China Internet ETF includes stocks that trade outside the United States and the closing value of the KraneShares CSI China Internet ETF is based on the U.S. dollar value of those stocks, the KraneShares CSI China Internet ETF is subject to currency exchange rate risk with respect to the currency in which such stocks trade. Exchange rate movements may be volatile and may be driven by numerous factors specific to the relevant countries, including the supply of, and the demand for, the applicable currencies, as well as government policy and intervention and macroeconomic factors. Exchange rate movements may also be influenced significantly by speculative trading. In general, if the U.S. dollar strengthens against the currency in which the stocks included in the KraneShares CSI China Internet ETF trade, the closing value of the KraneShares CSI China Internet ETF will be adversely affected for that reason alone.

The KraneShares CSI China Internet ETF Is Subject To Concentrated Risks Associated With The Internet Sector In China.

The securities held by the KraneShares CSI China Internet ETF are concentrated in China-based companies whose primary business or businesses are in the internet and internet-related sectors. Companies in these sectors are subject to concentrated risks, including risks of changes in technology, the competitive environment and government regulation. The underlying shares of the KraneShares CSI China Internet ETF may be more volatile and be more adversely affected by a single negative economic, political or regulatory occurrence affecting the internet and internet-related sectors in China than a different investment in a more broadly diversified group of industries.

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Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

The fact that we are offering the securities does not mean that we or Wells Fargo or its affiliates believe that investing in an instrument linked to the underlying is likely to achieve favorable returns. In fact, as we and Wells Fargo and its affiliates are each part of respective global financial institutions, our affiliates and affiliates of Wells Fargo may have positions (including short positions) in the underlying or in instruments related to the underlying, and may publish research or express opinions, that in each case are inconsistent with an investment linked to the underlying. These and other activities of our affiliates or of Wells Fargo or its affiliates may affect the closing values of the underlying in a way that negatively affects the value of and your return on the securities.

The Closing Value Of The Underlying May Be Adversely Affected By Our Or Our Affiliates’, Or By Wells Fargo And Its Affiliates’, Hedging And Other Trading Activities.

We expect to hedge our obligations under the securities through CGMI or other of our affiliates and/or Wells Fargo or its affiliates, who may take positions in the underlying or in financial instruments related to the underlying and may adjust such positions during the term of the securities. Our affiliates and Wells Fargo and its affiliates also take positions in the underlying or in financial instruments related to the underlying on a regular basis (taking long or short positions or both), for their accounts, for other accounts under their management or to facilitate transactions on behalf of customers. These activities could affect the closing value of the underlying in a way that negatively affects the value of and your return on the securities. They could also result in substantial returns for us or our affiliates or Wells Fargo and its affiliates while the value of the securities declines.

We And Our Affiliates And Wells Fargo And Its Affiliates May Have Economic Interests That Are Adverse To Yours As A Result Of Our And Their Respective Business Activities.

Our affiliates and Wells Fargo and its affiliates engage in business activities with a wide range of companies. These activities include extending loans, making and facilitating investments, underwriting securities offerings and providing advisory services. These activities could involve or affect the underlying in a way that negatively affects the value of and your return on the securities. They could also result in substantial returns for us or our affiliates or Wells Fargo or its affiliates while the value of the securities declines. In addition, in the course of this business, we or our affiliates or Wells Fargo or its affiliates may acquire non-public information, which will not be disclosed to you.

The Calculation Agent, Which Is An Affiliate Of Ours, Will Make Important Determinations With Respect To The Securities.

If certain events occur during the term of the securities, such as market disruption events and other events with respect to an underlying, CGMI, as calculation agent, will be required to make discretionary judgments that could significantly affect your return on the securities. In making these judgments, the calculation agent’s interests as an affiliate of ours could be adverse to your interests as a holder of the securities. See “ Risk Factors Relating to the Securities—Risk Factors Relating to All Securities—The calculation agent, which is an affiliate of ours, will make important determinations with respect to the securities” in the accompanying product supplement.

Even If The Underlying Pays A Dividend That It Identifies As Special Or Extraordinary, No Adjustment Will Be Required Under The Securities For That Dividend Unless It Meets The Criteria Specified In The Accompanying Product Supplement.

In general, an adjustment will not be made under the terms of the securities for any cash dividend paid by the underlying unless the amount of the dividend per share, together with any other dividends paid in the same quarter, exceeds the dividend paid per share in the most recent quarter by an amount equal to at least 10% of the closing value of the underlying on the date of declaration of the dividend. Any dividend will reduce the closing value of the underlying by the amount of the dividend per share. If the underlying pays any dividend for which an adjustment is not made under the terms of the securities, holders of the securities will be adversely affected. See “Description of the Securities—Certain Additional Terms for Securities Linked to an Underlying Company or an Underlying ETF—Dilution and Reorganization Adjustments—Certain Extraordinary Cash Dividends” in the accompanying product supplement.

The Securities Will Not Be Adjusted For All Events That May Have A Dilutive Effect On Or Otherwise Adversely Affect The Closing Value Of The Underlying.

For example, we will not make any adjustment for ordinary dividends or extraordinary dividends that do not meet the criteria described above, partial tender offers or additional underlying share issuances. Moreover, the adjustments we do make may not fully offset the dilutive or adverse effect of the particular event. Investors in the securities may be adversely affected by such an event in a circumstance in which a direct holder of the underlying shares would not.

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Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

The Securities May Become Linked To An Underlying Other Than The Original Underlying Upon The Occurrence Of A Reorganization Event Or Upon The Delisting Of The Underlying Shares.

For example, if the underlying enters into a merger agreement that provides for holders of the underlying shares to receive shares of another entity and such shares are marketable securities, the closing value of the underlying following consummation of the merger will be based on the value of such other shares. Additionally, if the underlying shares are delisted, the calculation agent may select a successor underlying. See “Description of the Securities—Certain Additional Terms for Securities Linked to an Underlying Company or an Underlying ETF” in the accompanying product supplement.

The Value And Performance Of The Underlying Shares May Not Completely Track The Performance Of The Underlying Index That The Underlying Seeks To Track Or The Net Asset Value Per Share Of The Underlying.

The underlying does not fully replicate the underlying index that it seeks to track and may hold securities different from those included in its underlying index. In addition, the performance of the underlying will reflect additional transaction costs and fees that are not included in the calculation of its underlying index. All of these factors may lead to a lack of correlation between the performance of the underlying and its underlying index. In addition, corporate actions with respect to the equity securities held by the underlying (such as mergers and spin-offs) may impact the variance between the performance of the underlying and its underlying index. Finally, because the underlying shares are traded on an exchange and are subject to market supply and investor demand, the closing value of the underlying may differ from the net asset value per share of the underlying.

During periods of market volatility, securities included in the underlying’s underlying index may be unavailable in the secondary market, market participants may be unable to calculate accurately the net asset value per share of the underlying and the liquidity of the underlying may be adversely affected. This kind of market volatility may also disrupt the ability of market participants to create and redeem shares of the underlying. Further, market volatility may adversely affect, sometimes materially, the price at which market participants are willing to buy and sell the underlying shares. As a result, under these circumstances, the closing value of the underlying may vary substantially from the net asset value per share of the underlying. For all of the foregoing reasons, the performance of the underlying may not correlate with the performance of its underlying index and/or its net asset value per share, which could materially and adversely affect the value of the securities and/or reduce your return on the securities.

The sponsor of the underlying may at any time make methodological changes or other changes in the manner in which it operates that could affect the value of the underlying. We are not affiliated with such underlying sponsor and, accordingly, we have no control over any changes any sponsor may make. Such changes could adversely affect the performance of the underlying and the value of and your return on the securities.

The Stated Maturity Date May Be Postponed If The Valuation Date is Postponed.

The valuation date will be postponed if the originally scheduled valuation date is not a trading day or if the calculation agent determines that a market disruption event has occurred or is continuing on the valuation date. If such a postponement occurs, the stated maturity date will be the later of (i) the initial stated maturity date and (ii) three business days after the valuation date as postponed.

The U.S. Federal Tax Consequences Of An Investment In The Securities Are Unclear.

There is no direct legal authority regarding the proper U.S. federal tax treatment of the securities, and we do not plan to request a ruling from the Internal Revenue Service (the “IRS”). Consequently, significant aspects of the tax treatment of the securities are uncertain, and the IRS or a court might not agree with the treatment of the securities as prepaid forward contracts. If the IRS were successful in asserting an alternative treatment of the securities, the tax consequences of the ownership and disposition of the securities might be materially and adversely affected. Even if the treatment of the securities as prepaid forward contracts is respected, a security may be treated as a “constructive ownership transaction,” with potentially adverse consequences described below under “United States Federal Tax Considerations.” Moreover, future legislation, Treasury regulations or IRS guidance could adversely affect the U.S. federal tax treatment of the securities, possibly retroactively.

If you are a non-U.S. investor, you should review the discussion of withholding tax issues in “United States Federal Tax Considerations—Non-U.S. Holders” below.

You should read carefully the discussion under “United States Federal Tax Considerations” and “Risk Factors Relating to the Securities” in the accompanying product supplement and “United States Federal Tax Considerations” in this pricing supplement. You

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should also consult your tax adviser regarding the U.S. federal tax consequences of an investment in the securities, as well as tax consequences arising under the laws of any state, local or non-U.S. taxing jurisdiction.

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

The table below is based on a range of hypothetical underlying returns and illustrates:

The table below is based on a hypothetical initial underlying value of $100 and does not reflect the actual initial underlying value.

The above figures are for purposes of illustration only and may have been rounded for ease of analysis.

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Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

The examples below illustrate how to determine the payment at maturity on the securities, assuming the various hypothetical final underlying values indicated below. The examples are solely for illustrative purposes, do not show all possible outcomes and are not a prediction of what the actual payment at maturity on the securities will be. The actual payment at maturity will depend on the actual final underlying value.

The examples below are based on a hypothetical initial underlying value of $100, rather than the actual initial underlying value or final barrier value. For the actual initial underlying value and final barrier value, see “Terms of the Securities” above. We have used these hypothetical values, rather than the actual values, to simplify the calculations and aid understanding of how the securities work. However, you should understand that the actual payment at maturity on the securities will be calculated based on the actual initial underlying value and final barrier value, and not the hypothetical values indicated below.

Example 1—Upside Scenario A. The hypothetical final underlying value is $110 (a 10% increase from the initial underlying value), which is greater than the initial underlying value, and the hypothetical underlying return multiplied by the participation rate is 10%, which is less than the maximum return.

(i) $1,000 × underlying return × participation rate = $1,000 × 10% × 150% = $150; and

Because the underlying appreciated from the initial underlying value to the hypothetical final underlying value and the hypothetical underlying return multiplied by the participation rate is less than the maximum return at maturity, your payment at maturity in this scenario would reflect leveraged exposure to the positive performance of the underlying.

Example 2—Upside Scenario B. The hypothetical final underlying value is $190 (a 90% increase from the initial underlying value), which is greater than the initial underlying value, and the hypothetical underlying return multiplied by the participation rate is 90%, which is greater than the maximum return.

(i) $1,000 × underlying return × participation rate = $1,000 × 90% × 150% = $1,350; and

Because the underlying appreciated from the initial underlying value to the hypothetical final underlying value but the hypothetical underlying return multiplied by the participation rate is greater than the maximum return at maturity, you would receive a total return at maturity equal to the maximum return at maturity. As a result, an investment in the securities would underperform a hypothetical alternative investment providing 1-to-1 exposure to the appreciation of the underlying without a maximum return.

Example 3—Par Scenario. The hypothetical final underlying value is $95 (a 5% decrease from the initial underlying value), which is less than the initial underlying value but greater than the final barrier value.

Because the hypothetical final underlying value is less than the initial underlying value but greater than the final barrier value, you would be repaid the stated principal amount of your securities at maturity but would not receive any positive return on your investment.

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Example 4—Downside Scenario. The hypothetical final underlying value is $30 (a 70% decrease from the initial underlying value), which is less than the final barrier value.

Because the underlying depreciated from the initial underlying value to the hypothetical final underlying value and the hypothetical final underlying value is less than the final barrier value, your payment at maturity in this scenario would reflect 1-to-1 exposure to the negative performance of the underlying.

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The following provisions supersede the provisions in the product supplement to the extent that they are inconsistent from those provisions.

The “closing value” of the underlying on any date is the closing price of its underlying shares on such date, subject to adjustment as provided in the accompanying product supplement. The “underlying shares” of the underlying are its shares that are traded on a U.S. national securities exchange on the pricing date. Please see the accompanying product supplement for more information.

“Closing price” means, with respect to the underlying shares (or any other securities in the circumstances described under “Description of the Securities—Certain Additional Terms for Securities Linked to an Underlying Company or an Underlying ETF—Dilution and Reorganization Adjustments” in the accompanying product supplement), on any date of determination, the official closing price of the underlying shares on the relevant stock exchange or, if such price is not available on the relevant stock exchange, on any other U.S. national securities exchange on which the underlying shares (or such other securities) are listed or admitted to trading, as determined by the calculation agent. If no such price is available pursuant to the immediately preceding sentence, the closing price with respect to the underlying shares (or such other securities) on the applicable date of determination will be the arithmetic mean, as determined by the calculation agent, of the bid prices of the underlying shares (or such other securities) obtained from as many dealers in the underlying shares (or such other securities) (which may include CGMI or any of our other affiliates or subsidiaries), but not exceeding three such dealers, as will make such bid prices available to the calculation agent. If no bid prices are provided from any third party dealers, the closing price will be determined by the calculation agent in its sole and absolute discretion (acting in good faith) taking into account any information that it deems relevant. If a market disruption event occurs with respect to the underlying shares (or such other securities) on the applicable date of determination, the calculation agent may, in its sole discretion, determine the closing price thereof on such date either (x) pursuant to the two immediately preceding sentences or (y) if available, pursuant to the first sentence of this paragraph.

The “then-current market price” of the underlying shares, for the purpose of applying any dilution adjustment set forth in “Description of the Securities—Certain Additional Terms for Securities Linked to an Underlying Company or an Underlying ETF—Dilution and Reorganization Adjustments” in the accompanying product supplement, means the closing price per such underlying share on the scheduled trading day immediately preceding the related adjustment date (as defined in such section of the accompanying product supplement).

A “trading day” means a day, as determined by the calculation agent, on which the relevant stock exchange and each related futures or options exchange with respect to the underlying or any successor thereto, if applicable, are scheduled to be open for trading for their respective regular trading sessions.

The “relevant stock exchange” for the underlying means the primary exchange or quotation system on which shares (or other applicable securities) of the underlying are traded, as determined by the calculation agent.

The “related futures or options exchange” for the underlying means an exchange or quotation system where trading has a material effect (as determined by the calculation agent) on the overall market for futures or options contracts relating to the underlying.

If the scheduled valuation date is not a trading day, the valuation date will be postponed to the next succeeding day that is a trading day. The valuation date is also subject to postponement due to the occurrence of a market disruption event. See “—Market Disruption Events.”

A “market disruption event” with respect to the underlying means any of the following events as determined by the calculation agent in its sole discretion:

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

For purposes of determining whether a market disruption event has occurred with respect to the underlying:

If a market disruption event occurs or is continuing on the valuation date, then the valuation date will be postponed to the first succeeding trading day on which a market disruption event has not occurred and is not continuing; however, if such first succeeding trading day has not occurred as of the eighth trading day after the originally scheduled valuation date, that eighth trading day shall be deemed to be the valuation date. If the valuation date has been postponed eight trading days after the originally scheduled valuation date and a market disruption event occurs or is continuing on such eighth trading day, the calculation agent will determine the closing value of the underlying on such eighth trading day based on its good faith estimate of the value of the underlying shares of the underlying as of the close of trading on such eighth trading day.

If the closing value of the underlying is determined by reference to the underlying index as described in the accompanying product supplement in the section “Description of the Securities—Certain Additional Terms for Securities Linked to an Underlying Company or an Underlying ETF—Delisting, Liquidation or Termination of an Underlying ETF”, and at any time the publisher of the underlying index (i) announces that it will make a material change in the formula for or the method of calculating the underlying index or in any other way materially modifies the underlying index (other than a modification prescribed in that formula or method to maintain the underlying index in the event of changes in constituent stock and capitalization and other routine events) or (ii) permanently cancels the underlying index and no successor underlying index is chosen as described in the accompanying product supplement, then the calculation agent will calculate the closing value of the underlying index of the underlying in accordance with the formula last used to calculate such closing value before such event, but using only those securities that were held by the underlying index of the underlying

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

immediately prior to such event without any rebalancing or substitution of such securities following such event. Such value, as calculated by the calculation agent, will be substituted for the relevant value of the underlying index for all purposes. In such event, the calculation agent will make such adjustments, if any, to any level of the underlying index that is used for purposes of the securities as it determines are appropriate in the circumstances.

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

The KraneShares CSI China Internet ETF is an exchange-traded fund that seeks to track the investment results, before fees and expenses, of the CSI Overseas China Internet Index (the “China Internet Index”), a free float market capitalization weighted index consisting of China based companies whose primary business or businesses are in the Internet and Internet-related sectors and are listed outside of Mainland China. However, for purposes of the securities, the performance of the KraneShares CSI China Internet ETF will reflect only its price performance, as any dividends paid on the shares of the KraneShares CSI China Internet ETF will not be factored into a determination of the closing price of the KraneShares CSI China Internet ETF.

Information provided to or filed with the SEC pursuant to the Securities Act of 1933, as amended, and the Investment Company Act of 1940, as amended, can be located by reference to SEC file numbers 333-180870 and 811-22698, respectively, through the SEC’s website at http://www.sec.gov. In addition, information may be obtained from other sources including, but not limited to, press releases, newspaper articles and other publicly disseminated documents. The underlying shares of the KraneShares CSI China Internet ETF trade on the NYSE Arca under the ticker symbol “KWEB.”

We have derived all information regarding the KraneShares CSI China Internet ETF from publicly available information and have not independently verified any information regarding the KraneShares CSI China Internet ETF. This pricing supplement relates only to the securities and not to the KraneShares CSI China Internet ETF. We make no representation as to the performance of the KraneShares CSI China Internet ETF over the term of the securities.

The China Internet Index is a modified free float-adjusted market capitalization-weighted index that is designed to measure the overall performance of overseas listed Chinese Internet companies. All information contained in this pricing supplement regarding the China Internet Index, including, without limitation, its make-up, performance, method of calculation and changes in its components, has been derived from publicly available sources, without independent verification. This information reflects the policies of and is subject to change by China Securities Index Company Limited (“CSI”). The China Internet Index is calculated, maintained and published by CSI. CSI does not have any obligation to continue to publish, and may discontinue the publication of, the China Internet Index. The China Internet Index is reported by Bloomberg L.P. in U.S. dollars under the ticker symbol “H11137.”

Hong Kong listed securities that meet any of the following conditions will be excluded from the eligible universe:

All securities whose average daily trading value in the past year is less than 3 million USD or average daily market capitalization in the past year is less than 2 billion USD are removed from the eligible universe.

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

From the remaining securities, securities are chosen for inclusion in the China Internet Index if they are assigned to one of the following categories, as determined by CSI:

The constituents are ranked by adjusted USD market capitalization subject to a cap of 10%. The weight of constituents is determined according to the following methodology:

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

The China Internet Index is a modified free float-adjusted market capitalization-weighted index. The China Internet Index is calculated using the following formula:

Float Adjustment. CSI defines free-float of a constituent as the shares outstanding and tradable in the security market. The identification and calculation of free float by CSI is based on objective information including prospectuses and listing notices, periodic reports and temporary reports. CSI tracks the changes of free-float shares and adjusts free-float changes resulting from shareholder’s behavior every six months. All restricted shares subject to a lock-in period are deemed to be non-free float. Non-restricted shares will be deemed to be non-free float if (a) they fall into one of the following types of shares: (1) shares held by founders of the company or their families, and by senior executives, by directors, or by supervisors, etc.; (2) shares held by the government or its subsidiaries; (3) shares held by strategic investors for long-term strategic interest; or (4) shares held by employee share plans; and (b) the holdings by shareholders or shareholders acting in concert are 5% or greater; otherwise, they will be deemed to be free float. Restricted shares after the lock-in period are treated in the same way as non-restricted shares. The weight factor is a value between 0 and 1 and is determined as described under “— Constituent Weightings” above.

Exchange Rate. The price of each component stock and the total market capitalization as of the base date are converted into USD equivalents using the relevant exchange rates as of the applicable dates. Exchange rates are sourced from the data providers as designated by CSI from time to time. The real-time calculation of the China Internet Index is based on the real-time price date published by the stock exchanges during trading hours through their quotation system. The real-time exchange rate is used to calculate the real-time index; the exchange rate at the index closing time is used to calculate the index closing level.

Divisor. The purpose of the index divisor is to maintain the continuity of an index level following a change to the constituent list, a capital change in the index constituents or an index constituent’s market value changes due to non-trading factors. The new divisor is derived from the following formula:

The new divisor derived from this formula will be used for the future index calculation.

The China Internet Index is adjusted and rebalanced semi-annually during the last ten days of May and November of each year. The adjustment will be effective as of the next trading day after the second Friday in June and December.

A weight factor is assigned to each constituent at each rebalancing date. The effective date is the same as that of the constituent adjustment. The weight factor stays the same until the next rebalancing date.

Suspension. At the periodic index review, if an index constituent is suspended, CSI will determine its treatment as follows:

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

For suspended companies that are not currently constituents of the China Internet Index, CSI determines their treatment as follows:

In the case of exceptional corporate events, CSI will review the China Internet Index and make necessary ongoing adjustments between index reviews in order to maintain the representativeness of the index and ensure it is investable. These corporate events include IPOs, mergers and acquisitions, spin-offs, suspensions, delistings, bankruptcies, cash or stock dividends, stock splits or reverse stock splits, rights issues and secondary offerings.

The China Internet Index has a base date of June 29, 2007, with a base value of 1,000 on that date.

CSI annually reviews the index calculation and maintenance methodology and other index policy documents to ensure that the China Internet Index continues to achieve the stated objectives. After the regular review is completed, an annual review report is produced and presented to the index oversight committee.

CSI may review index methodology documents outside the annual scheduled reviews based on, but not limited to, one of the following: underlying market environment review, market participant feedback, problems identified in index management or unusual corporate events treatment.

The securities represent obligations of Citigroup Global Markets Holdings Inc. (guaranteed by Citigroup Inc.) only. The sponsor of the KraneShares CSI China Internet ETF is not involved in any way in this offering and has no obligation relating to the securities or to holders of the securities.

The closing value of the KraneShares CSI China Internet ETF on October 18, 2021 was $50.82.

The graph below shows the closing value of the KraneShares CSI China Internet ETF for each day such value was available from January 4, 2016 to October 18, 2021. We obtained the closing values from Bloomberg L.P., without independent verification. You should not take historical closing values as an indication of future performance.

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

You should read carefully the discussion under “United States Federal Tax Considerations” and “Risk Factors Relating to the Securities” in the accompanying product supplement and “Summary Risk Factors” in this pricing supplement.

In the opinion of our counsel, Davis Polk & Wardwell LLP, which is based on current market conditions, a security should be treated as a prepaid forward contract for U.S. federal income tax purposes. By purchasing a security, you agree (in the absence of an administrative determination or judicial ruling to the contrary) to this treatment. There is uncertainty regarding this treatment, and the IRS or a court might not agree with it.

Assuming this treatment of the securities is respected and subject to the discussion in “United States Federal Tax Considerations” in the accompanying product supplement, the following U.S. federal income tax consequences should result under current law:

Even if the treatment of the securities as prepaid forward contracts is respected, your purchase of a security may be treated as entry into a “constructive ownership transaction,” within the meaning of Section 1260 of the Code. In that case, all or a portion of any long-term capital gain you would otherwise recognize in respect of your securities would be recharacterized as ordinary income to the extent such gain exceeded the “net underlying long-term capital gain.” Any long-term capital gain recharacterized as ordinary income under Section 1260 would be treated as accruing at a constant rate over the period you held your securities, and you would be subject to an interest charge in respect of the deemed tax liability on the income treated as accruing in prior tax years. Due to the lack of governing authority under Section 1260, our counsel is not able to opine as to whether or how Section 1260 applies to the securities. You should read the section entitled “United States Federal Tax Considerations—Tax Consequences to U.S. Holders—Securities Treated as Prepaid Forward Contracts—Possible Application of Section 1260 of the Code” in the accompanying product supplement for additional information and consult your tax adviser regarding the potential application of the “constructive ownership” rule.

We do not plan to request a ruling from the IRS regarding the treatment of the securities. An alternative characterization of the securities could materially and adversely affect the tax consequences of ownership and disposition of the securities, including the timing and character of income recognized. In addition, the U.S. Treasury Department and the IRS have requested comments on various issues regarding the U.S. federal income tax treatment of “prepaid forward contracts” and similar financial instruments and have indicated that such transactions may be the subject of future regulations or other guidance. Furthermore, members of Congress have proposed legislative changes to the tax treatment of derivative contracts. Any legislation, Treasury regulations or other guidance promulgated after consideration of these issues could materially and adversely affect the tax consequences of an investment in the securities, possibly with retroactive effect. You should consult your tax adviser regarding possible alternative tax treatments of the securities and potential changes in applicable law.

Non-U.S. Holders. Subject to the discussions below and in “United States Federal Tax Considerations” in the accompanying product supplement, if you are a Non-U.S. Holder (as defined in the accompanying product supplement) of the securities, you generally should not be subject to U.S. federal withholding or income tax in respect of any amount paid to you with respect to the securities, provided that (i) income in respect of the securities is not effectively connected with your conduct of a trade or business in the United States, and (ii) you comply with the applicable certification requirements.

As discussed under “United States Federal Tax Considerations—Tax Consequences to Non-U.S. Holders” in the accompanying product supplement, Section 871(m) of the Code and Treasury regulations promulgated thereunder (“Section 871(m)”) generally impose a 30% withholding tax on dividend equivalents paid or deemed paid to Non-U.S. Holders with respect to certain financial instruments linked to U.S. equities (“U.S. Underlying Equities”) or indices that include U.S. Underlying Equities. Section 871(m) generally applies to instruments that substantially replicate the economic performance of one or more U.S. Underlying Equities, as determined based on tests set forth in the applicable Treasury regulations. However, the regulations, as modified by an IRS notice, exempt financial instruments issued prior to January 1, 2023 that do not have a “delta” of one. Based on the terms of the securities and representations provided by us, our counsel is of the opinion that the securities should not be treated as transactions that have a “delta” of one within the meaning of the regulations with respect to any U.S. Underlying Equity and, therefore, should not be subject to withholding tax under Section 871(m).

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

A determination that the securities are not subject to Section 871(m) is not binding on the IRS, and the IRS may disagree with this treatment. Moreover, Section 871(m) is complex and its application may depend on your particular circumstances, including your other transactions. You should consult your tax adviser regarding the potential application of Section 871(m) to the securities.

If withholding tax applies to the securities, we will not be required to pay any additional amounts with respect to amounts withheld.

You should read the section entitled “United States Federal Tax Considerations” in the accompanying product supplement. The preceding discussion, when read in combination with that section, constitutes the full opinion of Davis Polk & Wardwell LLP regarding the material U.S. federal tax consequences of owning and disposing of the securities.

You should also consult your tax adviser regarding all aspects of the U.S. federal income and estate tax consequences of an investment in the securities and any tax consequences arising under the laws of any state, local or non-U.S. taxing jurisdiction.

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

Pursuant to the terms of the Amended and Restated Global Selling Agency Agreement, dated April 7, 2017, CGMI, acting as principal, will purchase the securities from Citigroup Global Markets Holdings Inc. CGMI, as the lead agent for the offering, has agreed to sell the securities to Wells Fargo, as agent. Wells Fargo will receive an underwriting discount and commission of 3.10% ($31.00) for each security it sells. Wells Fargo will pay selected dealers, which may include WFA, a fixed selling commission of 2.25% ($22.50) for each security they sell. In addition to the selling commission allowed to WFA, Wells Fargo will pay $0.75 per security of the underwriting discount and commission to WFA as a distribution expense fee for each security sold by WFA.

In addition, in respect of certain securities sold in this offering, CGMI may pay a fee of up to $4.00 per security to selected securities dealers in consideration for marketing and other services in connection with the distribution of the notes to other securities dealers.

The public offering price of the securities includes the underwriting discount and commission described on the cover page of this pricing supplement and the estimated cost of hedging our obligations under the securities. We expect to hedge our obligations under the securities through affiliated or unaffiliated counterparties, which may include our affiliates or affiliates of Wells Fargo. Our cost of hedging will include the projected profit that such counterparties, which may include our affiliates and affiliates of Wells Fargo, expect to realize in consideration for assuming the risks inherent in hedging our obligations under the securities. Because hedging our obligations entails risks and may be influenced by market forces beyond the control of any counterparty, which may include our affiliates and affiliates of Wells Fargo, such hedging may result in a profit that is more or less than expected, or could result in a loss.

This pricing supplement and the accompanying product supplement, prospectus supplement and prospectus may be used by Wells Fargo or an affiliate of Wells Fargo in connection with offers and sales related to market-making or other transactions in the securities. Wells Fargo or an affiliate of Wells Fargo may act as principal or agent in such transactions. Such sales will be made at prices related to prevailing market prices at the time of sale or otherwise.

No action has been or will be taken by Citigroup Global Markets Holdings Inc., Wells Fargo or any broker-dealer affiliates of any of them that would permit a public offering of the securities or possession or distribution of this pricing supplement or the accompanying product supplement, prospectus supplement or prospectus in any jurisdiction, other than the United States, where action for that purpose is required. No offers, sales or deliveries of the securities, or distribution of this pricing supplement, the accompanying product supplement or prospectus supplement and prospectus, may be made in or from any jurisdiction except in circumstances that will result in compliance with any applicable laws and regulations and will not impose any obligations on Citigroup Global Markets Holdings Inc., Wells Fargo or any broker-dealer affiliates of any of them.

The securities may not be offered, sold or otherwise made available to any retail investor in the European Economic Area (“EEA”). For the purposes of this provision:

Consequently no key information document required by Regulation (EU) No 1286/2014 (the “PRIIPs Regulation”) for offering or selling the securities or otherwise making them available to retail investors in the EEA has been prepared and therefore offering or selling the securities or otherwise making them available to any retail investor in the EEA may be unlawful under the PRIIPs Regulation.

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

The securities may not be offered, sold or otherwise made available to any retail investor in the United Kingdom. For the purposes of this provision:

Consequently no key information document required by Regulation (EU) No 1286/2014 as it forms part of domestic law by virtue of the EUWA (the “UK PRIIPs Regulation”) for offering or selling any securities or otherwise making them available to retail investors in the United Kingdom has been prepared and therefore offering or selling any securities or otherwise making them available to any retail investor in the United Kingdom may be unlawful under the UK PRIIPs Regulation.

CGMI calculated the estimated value of the securities set forth on the cover page of this pricing supplement based on proprietary pricing models. CGMI’s proprietary pricing models generated an estimated value for the securities by estimating the value of a hypothetical package of financial instruments that would replicate the payout on the securities, which consists of a fixed-income bond (the “bond component”) and one or more derivative instruments underlying the economic terms of the securities (the “derivative component”). CGMI calculated the estimated value of the bond component using a discount rate based on our internal funding rate. CGMI calculated the estimated value of the derivative component based on a proprietary derivative-pricing model, which generated a theoretical price for the instruments that constitute the derivative component based on various inputs, including the factors described under “Summary Risk Factors—The Value Of The Securities Prior To Maturity Will Fluctuate Based On Many Unpredictable Factors” in this pricing supplement, but not including our or Citigroup Inc.’s creditworthiness. These inputs may be market-observable or may be based on assumptions made by CGMI in its discretionary judgment.

We have been advised that, for a period of approximately four months following issuance of the securities, the price, if any, at which Wells Fargo would be willing to buy the securities from investors, and the value that will be indicated for the securities on any brokerage account statements prepared by Wells Fargo or its affiliates, will reflect a temporary upward adjustment from the price or value that would otherwise be determined. This temporary upward adjustment represents a portion of the costs associated with selling, structuring and hedging the securities that are included in the public offering price of the securities. The amount of this temporary upward adjustment will decline to zero on a straight-line basis over the four-month temporary adjustment period. However, Wells Fargo is not obligated to buy the securities from investors at any time. See “Summary Risk Factors—The Securities Will Not Be Listed On Any Securities Exchange And You May Not Be Able To Sell Them Prior To Maturity.”

In the opinion of Davis Polk & Wardwell LLP, as special products counsel to Citigroup Global Markets Holdings Inc., when the securities offered by this pricing supplement have been executed and issued by Citigroup Global Markets Holdings Inc. and authenticated by the trustee pursuant to the indenture, and delivered against payment therefor, such securities and the related guarantee of Citigroup Inc. will be valid and binding obligations of Citigroup Global Markets Holdings Inc. and Citigroup Inc., respectively, enforceable in accordance with their respective terms, subject to applicable bankruptcy, insolvency and similar laws affecting creditors’ rights generally, concepts of reasonableness and equitable principles of general applicability (including, without limitation, concepts of good faith, fair dealing and the lack of bad faith), provided that such counsel expresses no opinion as to the effect of

Market Linked Securities—Leveraged Upside Participation to a Cap and Contingent Downside

Principal at Risk Securities Linked to the KraneShares CSI China Internet ETF due October 21, 2025

fraudulent conveyance, fraudulent transfer or similar provision of applicable law on the conclusions expressed above. This opinion is given as of the date of this pricing supplement and is limited to the laws of the State of New York, except that such counsel expresses no opinion as to the application of state securities or Blue Sky laws to the securities.

In giving this opinion, Davis Polk & Wardwell LLP has assumed the legal conclusions expressed in the opinions set forth below of Alexia Breuvart, Secretary and General Counsel of Citigroup Global Markets Holdings Inc., and Barbara Politi, Associate General Counsel—Capital Markets of Citigroup Inc. In addition, this opinion is subject to the assumptions set forth in the letter of Davis Polk & Wardwell LLP dated May 11, 2021, which has been filed as an exhibit to a Current Report on Form 8-K filed by Citigroup Inc. on May 11, 2021, that the indenture has been duly authorized, executed and delivered by, and is a valid, binding and enforceable agreement of, the trustee and that none of the terms of the securities nor the issuance and delivery of the securities and the related guarantee, nor the compliance by Citigroup Global Markets Holdings Inc. and Citigroup Inc. with the terms of the securities and the related guarantee respectively, will result in a violation of any provision of any instrument or agreement then binding upon Citigroup Global Markets Holdings Inc. or Citigroup Inc., as applicable, or any restriction imposed by any court or governmental body having jurisdiction over Citigroup Global Markets Holdings Inc. or Citigroup Inc., as applicable.

In the opinion of Alexia Breuvart, Secretary and General Counsel of Citigroup Global Markets Holdings Inc., (i) the terms of the securities offered by this pricing supplement have been duly established under the indenture and the Board of Directors (or a duly authorized committee thereof) of Citigroup Global Markets Holdings Inc. has duly authorized the issuance and sale of such securities and such authorization has not been modified or rescinded; (ii) Citigroup Global Markets Holdings Inc. is validly existing and in good standing under the laws of the State of New York; (iii) the indenture has been duly authorized, executed and delivered by Citigroup Global Markets Holdings Inc.; and (iv) the execution and delivery of such indenture and of the securities offered by this pricing supplement by Citigroup Global Markets Holdings Inc., and the performance by Citigroup Global Markets Holdings Inc. of its obligations thereunder, are within its corporate powers and do not contravene its certificate of incorporation or bylaws or other constitutive documents. This opinion is given as of the date of this pricing supplement and is limited to the laws of the State of New York.

Alexia Breuvart, or other internal attorneys with whom she has consulted, has examined and is familiar with originals, or copies certified or otherwise identified to her satisfaction, of such corporate records of Citigroup Global Markets Holdings Inc., certificates or documents as she has deemed appropriate as a basis for the opinions expressed above. In such examination, she or such persons has assumed the legal capacity of all natural persons, the genuineness of all signatures (other than those of officers of Citigroup Global Markets Holdings Inc.), the authenticity of all documents submitted to her or such persons as originals, the conformity to original documents of all documents submitted to her or such persons as certified or photostatic copies and the authenticity of the originals of such copies.

In the opinion of Barbara Politi, Associate General Counsel—Capital Markets of Citigroup Inc., (i) the Board of Directors (or a duly authorized committee thereof) of Citigroup Inc. has duly authorized the guarantee of such securities by Citigroup Inc. and such authorization has not been modified or rescinded; (ii) Citigroup Inc. is validly existing and in good standing under the laws of the State of Delaware; (iii) the indenture has been duly authorized, executed and delivered by Citigroup Inc.; and (iv) the execution and delivery of such indenture, and the performance by Citigroup Inc. of its obligations thereunder, are within its corporate powers and do not contravene its certificate of incorporation or bylaws or other constitutive documents. This opinion is given as of the date of this pricing supplement and is limited to the General Corporation Law of the State of Delaware.

Barbara Politi, or other internal attorneys with whom she has consulted, has examined and is familiar with originals, or copies certified or otherwise identified to her satisfaction, of such corporate records of Citigroup Inc., certificates or documents as she has deemed appropriate as a basis for the opinions expressed above. In such examination, she or such persons has assumed the legal capacity of all natural persons, the genuineness of all signatures (other than those of officers of Citigroup Inc.), the authenticity of all documents submitted to her or such persons as originals, the conformity to original documents of all documents submitted to her or such persons as certified or photostatic copies and the authenticity of the originals of such copies.

© 2021 Citigroup Global Markets Inc. All rights reserved. Citi and Citi and Arc Design are trademarks and service marks of Citigroup Inc. or its affiliates and are used and registered throughout the world.

n	Linked to the KraneShares CSI China Internet ETF (the “underlying”)
n	Unlike ordinary debt securities, the securities do not pay interest or repay a fixed amount of principal at maturity. Instead, the securities provide for a payment at maturity that may be greater than, equal to or less than the stated principal amount of the securities, depending on the performance of the underlying from the initial underlying value to the final underlying value. The payment at maturity will reflect the following terms:
	n	If the value of the underlying increases, you will receive the stated principal amount plus 150% participation in the upside performance of the underlying, subject to a maximum return at maturity of 74% of the stated principal amount. As a result of the maximum return, the maximum payment at maturity will be $1,740.00 per security.
	n	If the value of the underlying remains unchanged or decreases but the decrease is to a value that is greater than or equal to the final barrier value, you will be repaid the stated principal amount
	n	If the value of the underlying decreases to a value less than the final barrier value, you will lose a significant portion, and possibly all, of the stated principal amount of your securities
n	The final barrier value for the underlying is equal to 75% of the initial underlying value
n	Investors may lose up to 100% of the stated principal amount
n	All payments on the securities are subject to the credit risk of Citigroup Global Markets Holdings Inc. and Citigroup Inc.; if Citigroup Global Markets Holdings Inc. and Citigroup Inc. default on their obligations, you could lose some or all of your investment
n	No periodic interest payments or dividends
n	The securities will not be listed on any securities exchange and, accordingly, may have limited or no liquidity. You should not invest in the securities unless you are willing to hold them to maturity.

	Per Security	Total
Public Offering Price⁽¹⁾	$1,000.00	$5,140,000.00
Underwriting Discount and Commission⁽²⁾⁽³⁾	$31.00	$159,340.00
Proceeds to Citigroup Global Markets Holdings Inc.⁽²⁾	$969.00	$4,980,660.00

Underlying:	The KraneShares CSI China Internet ETF
Issuer:	Citigroup Global Markets Holdings Inc., a wholly owned subsidiary of Citigroup Inc.
Guarantee:	All payments due on the securities are fully and unconditionally guaranteed by Citigroup Inc.
Stated Principal Amount:	$1,000 per security. References in this pricing supplement to a “security” are to a security with a stated principal amount of $1,000.
Pricing Date:	October 18, 2021
Issue Date:	October 21, 2021
Valuation Date:	October 14, 2025, subject to postponement if such date is not a trading day or certain market disruption events occur. See “Additional Terms of the Securities.”
Maturity Date:	October 21, 2025. If the valuation date is postponed, the stated maturity date will be the later of (i) October 21, 2025 and (ii) three business days after the valuation date as postponed. See “Additional Terms of the Securities.”
Payment at Maturity:	For each $1,000 stated principal amount security you hold at maturity: • If the final underlying value is greater than the initial underlying value: $1,000 plus the lesser of: (i) $1,000 × underlying return × participation rate; and (ii) the maximum return; • If the final underlying value is less than or equal to the initial underlying value, but greater than or equal to the final barrier value: $1,000; or • If the final underlying value is less than the final barrier value: $1,000 + ($1,000 × underlying return) If the final underlying value is less than the final barrier value, you will receive significantly less than the stated principal amount of your securities, and possibly nothing, at maturity.
Participation Rate:	150%
Maximum Return:	74% of the stated principal amount per security ($740.00 per security). As a result of the maximum return, the maximum payment at maturity will be $1,740.00 per security.
Final Barrier Value:	$38.115, which is equal to 75% of the initial underlying value.
Initial Underlying Value:	$50.82, the closing value on the pricing date.
Final Underlying Value:	The closing value on the valuation date
Underlying Return:	(Final underlying value – initial underlying value) / initial underlying value
Calculation Agent:	CGMI
Denominations:	$1,000 and any integral multiple of $1,000
CUSIP / ISIN:	17329UCT6 / US17329UCT60

Hypothetical final underlying value	Hypothetical underlying return	Hypothetical payment at maturity per security	Hypothetical total pre-tax rate of return
$200.00	100.00%	$1,740.00	74.00%
$190.00	90.00%	$1,740.00	74.00%
$180.00	80.00%	$1,740.00	74.00%
$170.00	70.00%	$1,740.00	74.00%
$150.00	50.00%	$1,740.00	74.00%
$149.34	49.34%	$1,740.00	74.00%
$125.00	25.00%	$1,375.00	37.50%
$110.00	10.00%	$1,150.00	15.00%
$100.00	0.00%	$1,000.00	0.00%
$90.00	-10.00%	$1,000.00	0.00%
$80.00	-20.00%	$1,000.00	0.00%
$75.00	-25.00%	$1,000.00	0.00%
$74.99	-25.01%	$749.90	-25.01%
$70.00	-30.00%	$700.00	-30.00%
$60.00	-40.00%	$600.00	-40.00%
$50.00	-50.00%	$500.00	-50.00%
$25.00	-75.00%	$250.00	-75.00%
$0.00	-100.00%	$0.00	-100.00%