Pricing Supplement No. U420 To the Underlying Supplement dated June 24, 2010, Product Supplement No. U-I dated October 18, 2010, Prospectus Supplement dated March 25, 2009 and Prospectus dated March 25, 2009 Filed Pursuant to Rule 424(b)(2) Registration Statement No. 333-158199-10 May 23, 2011

Financial Products
	$514,000
	11.30% per annum Callable Yield Notes due May 29, 2012 Linked to the Performance of the Russell 2000® Index, the SPDR® S&P® Homebuilders ETF and the United States Natural Gas Fund, LP

General

• The securities are designed for investors who are mildly bearish, neutral or mildly bullish on the Underlyings. Investors should be willing to lose some or all of their investment if a Knock-In Event occurs with respect to any Underlying. Any payment on the securities is subject to our ability to pay our obligations as they become due.

• Interest will be paid monthly in arrears at a rate of 11.30% per annum, subject to Early Redemption. Interest will be calculated on a 30/360 basis.

• The Issuer may redeem the securities, in whole but not in part, on any Interest Payment Date scheduled to occur on or after August 29, 2011. No interest will accrue or be payable following an Early Redemption.

• Senior unsecured obligations of Credit Suisse AG, acting through its Nassau Branch, maturing May 29, 2012.†

• Minimum purchase of $1,000. Minimum denominations of $1,000 and integral multiples of $1,000 in excess thereof.

• The securities priced on May 23, 2011 (the “Trade Date”) and are expected to settle on May 26, 2011. Delivery of the securities in book-entry form only will be made through The Depository Trust Company.

Key Terms

Issuer:	Credit Suisse AG (“Credit Suisse”), acting through its Nassau Branch
Underlyings:	Each Underlying is identified in the table below, together with its Bloomberg ticker symbol, Initial Level and Knock-In Level:

Underlying	Ticker	Initial Level	Knock-In Level
Russell 2000® Index (“RTY”)	RTY	814.04	569.828
SPDR® S&P® Homebuilders ETF (“XHB”)	XHB UP	18.20	12.740
United States Natural Gas Fund, LP (“UNG”)	UNG UP	11.13	7.791

Interest Rate:	11.30% per annum. Interest will be calculated on a 30/360 basis.
Interest Payment Dates:	Unless redeemed earlier, interest will be paid monthly in arrears on June 29, 2011, July 29, 2011, August 29, 2011, September 29, 2011, October 31, 2011, November 29, 2011, December 29, 2011, January 30, 2012, February 29, 2012, March 29, 2012, April 30, 2012 and the Maturity Date, subject to the modified following business day convention. No interest will accrue or be payable following an Early Redemption.
Redemption Amount:	At maturity, the Redemption Amount you will be entitled to receive will depend on the individual performance of each Underlying and whether a Knock-In Event occurs. If the securities are not subject to Early Redemption, the Redemption Amount will be determined as follows:
	•  If a Knock-In Event occurs during the Observation Period, the Redemption Amount will equal the principal amount of the securities you hold multiplied by the sum of one plus the Underlying Return of the Lowest Performing Underlying. In this case, the maximum Redemption Amount will equal the principal amount of the securities. Therefore, unless the Final Level of each of the Underlyings is greater than or equal to its Initial Level, the Redemption Amount will be less than the principal amount of the securities and you could lose your entire investment.
	•  If a Knock-In Event does not occur during the Observation Period, the Redemption Amount will equal the principal amount of the securities you hold.
	Any payment on the securities is subject to our ability to pay our obligations as they become due.
Early Redemption:	The Issuer may redeem the securities in whole, but not in part, on any Interest Payment Date scheduled to occur on or after August 29, 2011, upon at least three business days notice at 100% of the principal amount of the securities, together with the interest payable on that Interest Payment Date.
Knock-In Event:	A Knock-In Event will occur if the closing level of any Underlying reaches or falls below the Knock-In Level for that Underlying on any trading day during the Observation Period.
Knock-In Level:	For each Underlying, as set forth in the table above.
Lowest Performing Underlying:	The Underlying with the lowest Underlying Return.
Underlying Return:	For each Underlying, the Underlying Return will be calculated as follows:

Final Level – Initial Level Initial Level , subject to a maximum of zero

Initial Level:	For each Underlying, as set forth in the table above.
Final Level:	For each Underlying, the closing level of such Underlying on the Valuation Date.
Observation Period:	The period from but excluding the Trade Date to and including the Valuation Date.
Valuation Date:†	May 23, 2012
Maturity Date:†	May 29, 2012
Listing:	The securities will not be listed on any securities exchange.
CUSIP:	22546E7B4

† The Valuation Date for any Underlying is subject to postponement if such date is not an underlying business day for such Underlying or as a result of a market disruption event in respect to such Underlying and the Maturity Date is subject to postponement if such date is not a business day or if the Valuation Date for any Underlying is postponed, in each case as described in the accompanying product supplement under ‘‘Description of the Securities—Market disruption events.”

Investing in the securities involves a number of risks. See “Selected Risk Considerations” in this pricing supplement and “Risk Factors” beginning on page PS-3 of the accompanying product supplement.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of the securities or passed upon the accuracy or the adequacy of this pricing supplement or the accompanying underlying supplement, the product supplement, the prospectus supplement and the prospectus. Any representation to the contrary is a criminal offense.

	Price to Public	Underwriting Discounts and Commissions(1)	Proceeds to Issuer
Per security	$1,000.00	$20.00	$980.00
Total	$514,000.00	$10,280.00	$503,720.00

(1) We or one of our affiliates will pay discounts and commissions of $20.00 per $1,000 principal amount of securities. In addition, an affiliate of ours may pay referral fees of up to $7.50 per $1,000 principal amount of securities. For more detailed information, please see “Supplemental Plan of Distribution (Conflicts of Interest)” on the last page of this pricing supplement.

The agent for this offering, Credit Suisse Securities (USA) LLC (“CSSU”), is our affiliate. For more information, see “Supplemental Plan of Distribution (Conflicts of Interest)” on the last page of this pricing supplement.

The securities are not deposit liabilities and are not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency of the United States, Switzerland or any other jurisdiction.

CALCULATION OF REGISTRATION FEE

Title of Each Class of Securities Offered	Maximum Aggregate Offering Price	Amount of Registration Fee
Notes	$514,000.00	$59.67

Credit Suisse

May 23, 2011

Additional Terms Specific to the Securities

You should read this pricing supplement together with the underlying supplement dated June 24, 2010, the product supplement dated October 18, 2010, the prospectus supplement dated March 25, 2009 and the prospectus dated March 25, 2009 relating to our Medium Term Notes of which these securities are a part. You may access these documents on the SEC website at www.sec.gov as follows (or if such address has changed, by reviewing our filings for the relevant date on the SEC website):

• Underlying supplement dated June 24, 2010:

http://www.sec.gov/Archives/edgar/data/1053092/000104746910006110/a2199225z424b2.htm

• Product supplement No. U-I dated October 18, 2010:

http://www.sec.gov/Archives/edgar/data/1053092/000095010310003007/dp19604_424b2-ui.htm

• Prospectus supplement dated March 25, 2009:

http://www.sec.gov/Archives/edgar/data/1053092/000104746909003093/a2191799z424b2.htm

• Prospectus dated March 25, 2009:

http://www.sec.gov/Archives/edgar/data/1053092/000104746909003289/a2191966z424b2.htm

Our Central Index Key, or CIK, on the SEC website is 1053092. As used in this pricing supplement, the “Company,” “we,” “us,” or “our” refers to Credit Suisse.

This pricing supplement, together with the documents listed above, contains the terms of the securities and supersedes all other prior or contemporaneous oral statements as well as any other written materials including preliminary or indicative pricing terms, fact sheets, correspondence, trade ideas, structures for implementation, sample structures, brochures or other educational materials of ours. You should carefully consider, among other things, the matters set forth in “Risk Factors” in the product supplement and “Selected Risk Considerations” in this pricing supplement, as the securities involve risks not associated with conventional debt securities. You should consult your investment, legal, tax, accounting and other advisors before deciding to invest in the securities.

1

Hypothetical Redemption Amounts and Total Payments on the Securities

The tables and examples below illustrate hypothetical Redemption Amounts payable at maturity and, in the case of the tables, total payments over the term of the securities (which include both payments at maturity and the total interest paid on the securities) on a $1,000 investment in the securities for a range of Underlying Returns for the Lowest Performing Underlying, both in the event a Knock-In Event does not occur and in the event a Knock-In Event does occur. The tables and examples reflect that the Interest Rate applicable to the securities is 11.30% per annum, and assume that (i) the securities are not redeemed prior to maturity, (ii) the term of the securities is exactly one year and (iii) the Knock-In Level for each Underlying is 70% of the Initial Level for such Underlying. In addition, the examples below assume that the Initial Level is 840 for RTY, $19 for XHB and $11 for UNG. The examples are intended to illustrate hypothetical calculations of only the Redemption Amount and do not illustrate the calculation or payment of any individual interest payment. The Redemption Amounts and total payment amounts set forth below are provided for illustration purposes only. The actual Redemption Amounts and total payments applicable to a purchaser of the securities will depend on several variables, including, but not limited to (a) whether the closing level of any Underlying is less than or equal to its respective Knock-In Level on any trading day during the Observation Period and (b) the Final Level of the Lowest Performing Underlying determined on the Valuation Date. It is not possible to predict whether a Knock-In Event will occur, and in the event that there is a Knock-In Event, whether and by how much the Final Level of the Lowest Performing Underlying will decrease in comparison to its Initial Level. Any payment on the securities is subject to our ability to pay our obligations as they become due. The numbers appearing in the following tables and examples have been rounded for ease of analysis.

TABLE 1: A Knock-In Event DOES NOT occur during the Observation Period.

Percentage Change from the Initial Level to the Final Level for the Lowest Performing Underlying	Underlying Return of the Lowest Performing Underlying	Redemption Amount per $1,000 Principal Amount of Securities (Knock-In Event does not occur)	Total Interest Payment per $1,000 Principal Amount of Securities	Total Payment per $1,000 Principal Amount of Securities
50.00%	0.00%	$1,000.00	$113.00	$1,113.00
40.00%	0.00%	$1,000.00	$113.00	$1,113.00
30.00%	0.00%	$1,000.00	$113.00	$1,113.00
20.00%	0.00%	$1,000.00	$113.00	$1,113.00
10.00%	0.00%	$1,000.00	$113.00	$1,113.00
0.00%	0.00%	$1,000.00	$113.00	$1,113.00
-10.00%	-10.00%	$1,000.00	$113.00	$1,113.00
-20.00%	-20.00%	$1,000.00	$113.00	$1,113.00
-29.99%	-29.99%	$1,000.00	$113.00	$1,113.00

2

TABLE 2: A Knock-In Event DOES occur during the Observation Period.

Percentage Change from the Initial Level to the Final Level for the Lowest Performing Underlying	Underlying Return of the Lowest Performing Underlying	Redemption Amount per $1,000 Principal Amount of Securities (Knock-In Event occurs)	Total Interest Payment per $1,000 Principal Amount of Securities	Total Payment per $1,000 Principal Amount of Securities
50.00%	0.00%	$1,000.00	$113.00	$1,113.00
40.00%	0.00%	$1,000.00	$113.00	$1,113.00
30.00%	0.00%	$1,000.00	$113.00	$1,113.00
20.00%	0.00%	$1,000.00	$113.00	$1,113.00
10.00%	0.00%	$1,000.00	$113.00	$1,113.00
0.00%	0.00%	$1,000.00	$113.00	$1,113.00
-10.00%	-10.00%	$900.00	$113.00	$1,013.00
-20.00%	-20.00%	$800.00	$113.00	$913.00
-30.00%	-30.00%	$700.00	$113.00	$813.00
-40.00%	-40.00%	$600.00	$113.00	$713.00
-50.00%	-50.00%	$500.00	$113.00	$613.00

Example 1: A Knock-In Event occurs because the closing level of one Underlying reaches its Knock-In Level during the Observation Period; and the Final Level of the Lowest Performing Underlying is less than its Initial Level.

Underlying	Initial Level	Lowest closing level of the Underlying during the Observation Period	Final Level on the Valuation Date
RTY	840.00	840.00 (100% of Initial Level)	924.00 (110% of Initial Level)
XHB	$19.00	$19.00 (100% of Initial Level)	$20.90 (110% of Initial Level)
UNG	$11.00	$7.70 (70% of Initial Level)	$7.70 (70% of Initial Level)

Since the closing level of UNG reaches its Knock-In Level during the Observation Period, a Knock-In Event occurs. UNG is also the Lowest Performing Underlying.

Therefore, the Underlying Return of the Lowest Performing Underlying will equal:

Final Level of UNG―Initial Level of UNG	; subject to a maximum of 0.00
Initial Level of UNG

= ($7.70 – $11.00)/$11.00 = -0.30

Redemption Amount = principal amount of the securities × (1 + Underlying Return of the Lowest Performing Underlying)

= $1,000 x (1 – 0.30) = $700

Example 2: A Knock-In Event occurs because the closing level of one Underlying reaches its Knock-In Level during the Observation Period; the Lowest Performing Underlying never reaches or falls below its Knock-In Level during the Observation Period; and the Final Level of the Lowest Performing Underlying is less than its Initial Level.

Underlying	Initial Level	Lowest closing level of the Underlying during the Observation Period	Final Level on the Valuation Date
RTY	840.00	672.00 (80% of Initial Level)	924.00 (110% of Initial Level)
XHB	$19.00	$13.30 (70% of Initial Level)	$20.90 (110% of Initial Level)
UNG	$11.00	$8.47 (77% of Initial Level)	$8.47 (77% of Initial Level)

3

Since the closing level of XHB reaches its Knock-In Level during the Observation Period, a Knock-In Event occurs. UNG is the Lowest Performing Underlying, even though its closing level never reaches or falls below its Knock-In Level during the Observation Period.

Therefore, the Underlying Return of the Lowest Performing Underlying will equal:

Final Level of UNG―Initial Level of UNG	; subject to a maximum of 0.00
Initial Level of UNG

= ($8.47 – $11.00)/$11.00 = -0.23

Redemption Amount = principal amount of the securities × (1 + Underlying Return of the Lowest Performing Underlying)

= $1,000 x (1 – 0.23) = $770

Example 3: A Knock-In Event occurs because the closing level of one Underlying reaches its Knock-In Level during the Observation Period; and the Final Level of the Lowest Performing Underlying is greater than its Initial Level.

Underlying	Initial Level	Lowest closing level of the Underlying during the Observation Period	Final Level on the Valuation Date
RTY	840.00	588.00 (70% of Initial Level)	924.00 (110% of Initial Level)
XHB	$19.00	$13.30 (70% of Initial Level)	$21.85 (115% of Initial Level)
UNG	$11.00	$10.45 (95% of Initial Level)	$13.20 (120% of Initial Level)

Since the closing level of RTY reaches its Knock-In Level, a Knock-In Event occurs. RTY is also the Lowest Performing Underlying.

Therefore, the Underlying Return of the Lowest Performing Underlying will equal:

Final Level of RTY―Initial Level of RTY	; subject to a maximum of 0.00
Initial Level of RTY

= (924 – 840)/840 = 0.10

BUT 0.10 is greater than the maximum of 0.00, so the Underlying Return of the Lowest Performing Underlying is 0.00.

Redemption Amount = principal amount of the securities × (1 + Underlying Return of the Lowest Performing Underlying)

= $1,000 x (1 + 0.00) = $1,000

Example 4: A Knock-In Event does not occur.

Underlying	Initial Level	Lowest closing level of the Underlying during the Observation Period	Final Level on the Valuation Date
RTY	840.00	646.80 (77% of Initial Level)	924.00 (110% of Initial Level)
XHB	$19.00	$13.68 (72% of Initial Level)	$20.90 (110% of Initial Level)
UNG	$11.00	$8.58 (78% of Initial Level)	$12.10 (110% of Initial Level)

Since the closing level of each Underlying did not reach or fall below its Knock-In Level during the Observation Period, a Knock-In Event does not occur.

Therefore, the Redemption Amount equals $1,000.

4

Selected Risk Considerations

An investment in the securities involves significant risks. Investing in the securities is not equivalent to investing directly in the Underlyings. These risks are explained in more detail in the “Risk Factors” section of the accompanying product supplement.

• YOU MAY RECEIVE LESS THAN THE PRINCIPAL AMOUNT AT MATURITY — You may receive less at maturity than you originally invested in the securities, or you may receive nothing, excluding any accrued or unpaid interest. If a Knock-In Event occurs during the Observation Period and the Final Level of the Lowest Performing Underlying is less than its Initial Level, you will be fully exposed to any depreciation in the Lowest Performing Underlying. In this case, the Redemption Amount you will be entitled to receive will be less than the principal amount of the securities and you could lose your entire investment. It is not possible to predict whether a Knock-In Event will occur, and in the event that there is a Knock-In Event, whether and by how much the Final Level of the Lowest Performing Underlying will decrease in comparison to its Initial Level. Any payment on the securities is subject to our ability to pay our obligations as they become due.

• THE SECURITIES WILL NOT PAY MORE THAN THE PRINCIPAL AMOUNT, PLUS ACCRUED AND UNPAID INTEREST, AT MATURITY OR UPON EARLY REDEMPTION — The securities will not pay more than the principal amount, plus accrued and unpaid interest, at maturity or upon early redemption. If the Final Level of each Underlying is greater than its respective Initial Level (regardless of whether a Knock-In Event has occurred), you will not receive the appreciation of any Underlying. Assuming the securities are held to maturity and the term of the securities is exactly one year, the maximum amount payable with respect to the securities will not exceed $1,113.00 for each $1,000 principal amount of the securities.

• THE SECURITIES ARE SUBJECT TO THE CREDIT RISK OF CREDIT SUISSE — Although the return on the securities will be based on the performance of the Underlyings, the payment of any amount due on the securities, including any applicable interest payments, early redemption payment or payment at maturity, is subject to the credit risk of Credit Suisse. Investors are dependent on our ability to pay all amounts due on the securities and, therefore, investors are subject to our credit risk. In addition, any decline in our credit ratings, any adverse changes in the market’s view of our creditworthiness or any increase in our credit spreads is likely to adversely affect the value of the securities prior to maturity.

• THE REDEMPTION AMOUNT PAYABLE AT MATURITY WILL BE LESS THAN THE PRINCIPAL AMOUNT OF THE SECURITIES EVEN IF A KNOCK-IN EVENT OCCURS WITH RESPECT TO ONLY ONE UNDERLYING AND THE FINAL LEVEL OF ONLY ONE UNDERLYING FALLS BELOW ITS INITIAL LEVEL — Even if the closing level of only one Underlying reaches or falls below its Knock-In Level on any trading day during the Observation Period, a Knock-In Event will have occurred. In this case, the Redemption Amount payable at maturity will be less than the principal amount of the securities if, in addition to the occurrence of a Knock-In Event, the Final Level of just one Underlying falls below its Initial Level. This will be true even if the closing level of the Lowest Performing Underlying never reached or fell below its Knock-In Level on any trading day during the Observation Period.

• THE SECURITIES ARE SUBJECT TO A POTENTIAL EARLY REDEMPTION, WHICH WOULD LIMIT YOUR ABILITY TO ACCRUE INTEREST OVER THE FULL TERM OF THE SECURITIES —The securities are subject to a potential early redemption. The securities may be redeemed on any Interest Payment Date scheduled to occur on or after August 29, 2011 upon at least three business days notice. If the securities are redeemed prior to the Maturity Date, you will be entitled to receive the principal amount of your securities and any accrued but unpaid interest payable on that Interest Payment Date. In this case, you will lose the opportunity to continue to accrue and be paid interest from the date of Early Redemption to the scheduled Maturity Date. If the securities are redeemed prior to the Maturity Date, you may be unable to invest in other securities with a similar level of risk that yield as much interest as the securities.

5

• SINCE THE SECURITIES ARE LINKED TO THE PERFORMANCE OF MORE THAN ONE UNDERLYING, YOU WILL BE FULLY EXPOSED TO THE RISK OF FLUCTUATIONS IN THE LEVEL OF EACH UNDERLYING — Since the securities are linked to the performance of more than one Underlying, the securities will be linked to the individual performance of each Underlying. Because the securities are not linked to a basket, in which case the risk is mitigated and diversified among all of the components of a basket, you will be exposed to the risk of fluctuations in the levels of the Underlyings to the same degree for each Underlying. For example, in the case of securities linked to a basket, the return would depend on the weighted aggregate performance of the basket components as reflected by the basket return. Thus, the depreciation of any basket component could be mitigated by the appreciation of another basket component, to the extent of the weightings of such components in the basket. However, in the case of securities linked to the lowest performing of each of three Underlyings, the individual performance of each Underlying is not combined to calculate your return and the depreciation of any Underlying is not mitigated by the appreciation of any other Underlying. Instead, if a Knock-In Event occurs, the Redemption Amount payable at maturity will depend on the lowest performing of the three Underlyings to which the securities are linked.

• CERTAIN BUILT-IN COSTS ARE LIKELY TO ADVERSELY AFFECT THE VALUE OF THE SECURITIES PRIOR TO MATURITY — While the payment at maturity described in this pricing supplement is based on the full principal amount of your securities, the original issue price of the securities includes the agent’s commission and the cost of hedging our obligations under the securities through one or more of our affiliates. As a result, the price, if any, at which Credit Suisse (or its affiliates), will be willing to purchase securities from you in secondary market transactions, if at all, will likely be lower than the original issue price, and any sale prior to the Maturity Date could result in a substantial loss to you. The securities are not designed to be short-term trading instruments. Accordingly, you should be able and willing to hold your securities to maturity.

• LACK OF LIQUIDITY — The securities will not be listed on any securities exchange. Credit Suisse (or its affiliates) intends to offer to purchase the securities in the secondary market but is not required to do so. Even if there is a secondary market, it may not provide enough liquidity to allow you to trade or sell the securities when you wish to do so. Because other dealers are not likely to make a secondary market for the securities, the price at which you may be able to trade your securities is likely to depend on the price, if any, at which Credit Suisse (or its affiliates) is willing to buy the securities. If you have to sell your securities prior to maturity, you may not be able to do so or you may have to sell them at a substantial loss.

• POTENTIAL CONFLICTS — We and our affiliates play a variety of roles in connection with the issuance of the securities, including acting as calculation agent and hedging our obligations under the securities. In performing these duties, the economic interests of the calculation agent and other affiliates of ours are potentially adverse to your interests as an investor in the securities.

• MANY ECONOMIC AND MARKET FACTORS WILL AFFECT THE VALUE OF THE SECURITIES —  In addition to the levels of the Underlyings on any trading day during the Observation Period, the value of the securities will be affected by a number of economic and market factors that may either offset or magnify each other, including:

o   the expected volatility of the Underlyings;

o   the time to maturity of the securities;

o   the Early Redemption feature, which is likely to limit the value of the securities;

o   interest and yield rates in the market generally;

o   supply and demand for natural gas and housing;

o   investors’ expectations with respect to the rate of inflation;

6

o   geopolitical conditions and a variety of economic, financial, political, regulatory or judicial events that affect the components comprising the Underlyings, or markets generally and which may affect the levels of the Underlyings; and

o   our creditworthiness, including actual or anticipated downgrades in our credit ratings.

Some or all of these factors may influence the price that you will receive if you choose to sell your securities prior to maturity. The impact of any of the factors set forth above may enhance or offset some or all of any change resulting from another factor or factors.

• NO OWNERSHIP RIGHTS RELATING TO THE UNDERLYINGS — Your return on the securities will not reflect the return you would realize if you actually owned shares of the SPDR® S&P® Homebuilders ETF or the United States Natural Gas Fund, LP (each, a “Reference Fund”) or the assets that comprise the Underlyings. The return on your investment, which is based on the percentage change in the Underlyings, is not the same as the total return you would receive based on the purchase of the shares of the Reference Funds or the assets that comprise the Underlyings.

• NO DIVIDEND PAYMENTS OR VOTING RIGHTS — As a holder of the securities, you will not have voting rights or rights to receive cash dividends or other distributions or other rights with respect to shares of the Reference Funds and the assets that comprise the Underlyings.

• ANTI-DILUTION PROTECTION IS LIMITED — The calculation agent will make anti-dilution adjustments for certain events affecting the shares of each Reference Fund. However, the calculation agent will not make an adjustment in response to all events that could affect the shares of each Reference Fund. If an event occurs that does not require the calculation agent to make an adjustment, the value of the securities may be materially and adversely affected. For additional information, see “Description of the Securities—Adjustments—For reference funds” in the accompanying product supplement.

• THERE ARE RISKS ASSOCIATED WITH THE REFERENCE FUNDS — Although shares of the Reference Funds are listed for trading on a national securities exchange and a number of similar products have been traded on various national securities exchanges for varying periods of time, there is no assurance that an active trading market will continue for the shares of each Reference Fund or that there will be liquidity in the trading market. Each Reference Fund is subject to management risk, which is the risk that a fund’s investment strategy, the implementation of which is subject to a number of constraints, may not produce the intended results. Pursuant to each Reference Fund’s investment strategy or otherwise, its investment advisor may add, delete or substitute the assets held by such Reference Fund. Any of these actions could adversely affect the price of the shares of each Reference Fund and consequently the value of the securities. For additional information about the SPDR® S&P® Homebuilders ETF, see information set forth under “The Reference Funds—The SPDR® Funds—The SPDR® S&P® Homebuilders ETF” in the accompanying underlying supplement, and for additional information about the United States Natural Gas Fund, LP, see “United States Natural Gas Fund, LP” herein.

• COMMODITY PRICES ARE CHARACTERIZED BY HIGH AND UNPREDICTABLE VOLATILITY, WHICH COULD LEAD TO A HIGH AND UNPREDICTABLE VOLATILITY IN THE PRICE FOR UNITS OF THE UNITED STATES NATURAL GAS FUND, LP — Market prices of the commodities and commodity futures contracts comprising the United States Natural Gas Fund, LP tend to be highly volatile. Commodity market prices are not related to the value of a future income or earnings stream, as tends to be the case with fixed income and equity investments, but are subject to rapid fluctuations based on numerous factors, including changes in supply and demand relationships, governmental programs and policies, national and international monetary, trade, political and economic events, changes in interest and exchange rates, speculation and trading activities in commodities and related contracts, weather, and agricultural, trade, fiscal and exchange control policies. The markets for many commodities are also highly cyclical. These factors may have a larger impact on commodity prices and commodity linked instruments than on traditional fixed income and equity securities. These variables may create additional investment risks that cause the value of the securities to be more volatile than the values of traditional securities. These and other factors may affect the price of the United States Natural Gas Fund, LP, and thus the value of your securities, in unpredictable or unanticipated ways. The high volatility and cyclical

7

nature of commodity markets may render such an investment inappropriate as the focus of an investment portfolio.

• GLOBAL ENERGY COMMODITY PRICES ARE PRIMARILY AFFECTED BY THE GLOBAL DEMAND FOR AND SUPPLY OF THESE COMMODITIES, BUT ARE ALSO SIGNIFICANTLY INFLUENCED BY SPECULATIVE ACTIONS AND BY CURRENCY EXCHANGE RATES — Prices for energy commodities, which includes natural gas, crude oil, heating oil, gasoline, and other petroleum-based fuels, are affected by governmental programs and policies, national and international political and economic events, changes in interest and exchange rates, trading activities in commodities and related contracts, trade, fiscal, monetary and exchange control policies and with respect to oil specifically, drought, floods, weather, government intervention, environmental policies, embargoes and tariffs. Demand for natural gas products by consumers, as well as by businesses, affects the price of such commodities. Sudden disruptions in the supplies of energy commodities, such as those caused by war, natural events, accidents or acts of terrorism, may cause prices of energy commodities futures contracts to become extremely volatile and unpredictable. Also, sudden and dramatic changes in the futures market may occur, for example, upon a cessation of hostilities that may exist in countries producing energy commodities, the introduction of new or previously withheld supplies into the market or the introduction of substitute products or commodities. Demand for energy commodities is generally linked to economic activity, and will tend to reflect general economic conditions.

• THE SECURITIES ARE NOT SUBJECT TO REGULATION BY THE COMMODITY FUTURES TRADING COMMISSION — The proceeds to be received by us from the sale of the securities will not be used to purchase or sell any commodities futures contracts or options on futures contracts for your benefit. An investment in the securities thus does not constitute either an investment in futures contracts, options on futures contracts or in a collective investment vehicle that trades in these futures contracts (i.e., the securities will not constitute a direct or indirect investment by you in the futures contracts), and you will not benefit from the regulatory protections of the Commodity Futures Trading Commission, commonly referred to as the “CFTC.” The Issuer is not registered with the CFTC as a futures commission merchant and you will not benefit from the CFTC’s or any other non U.S. regulatory authority’s regulatory protections afforded to persons who trade in futures contracts on a regulated futures exchange through a registered futures commission merchant. Unlike an investment in the securities, an investment in a collective investment vehicle that invests in futures contracts on behalf of its participants may be subject to regulation as a commodity pool and its operator may be required to be registered with and regulated by the CFTC as a commodity pool operator, or qualify for an exemption from the registration requirement. Because the securities will not be interests in a commodity pool, the securities will not be regulated by the CFTC as a commodity pool, we will not be registered with the CFTC as a commodity pool operator, and you will not benefit from the CFTC’s or any non-U.S. regulatory authority’s regulatory protections afforded to persons who invest in regulated commodity pools.

• THE PERFORMANCE OF THE UNITED STATES NATURAL GAS FUND, LP MAY NOT FULLY REPLICATE THE PERFORMANCE OF NATURAL GAS — United States Commodity Funds, LLC, the general partner of the United States Natural Gas Fund, LP, is responsible for investing the assets of the United States Natural Gas Fund, LP in accordance with the objectives and policies of the United States Natural Gas Fund, LP. The assets of the United States Natural Gas Fund, LP consist primarily of investments in futures contracts for natural gas, crude oil, heating oil, gasoline, and other petroleum-based fuels that are traded on the New York Mercantile Exchange, ICE Futures or other U.S. and foreign exchanges (collectively, “natural gas futures contracts”) and other natural gas-related investments such as cash-settled options on natural gas futures contracts and indices (collectively, “other natural gas interests” and together with natural gas futures contracts, “natural gas interests”). The United States Natural Gas Fund, LP seeks to achieve its investment objective by investing in a mix of natural gas futures contracts and other natural gas interests such that changes in the net asset value of the United States Natural Gas Fund, LP will closely track the changes in the price of a specified natural gas futures contract (the “benchmark natural gas futures contract”). The United States Natural Gas Fund, LP’s general partner believes that the benchmark natural gas futures contract historically has exhibited a close correlation with the spot price of natural gas. There is no assurance that the general partner of the United States Natural Gas Fund, LP will successfully implement its investment strategy and there is a risk that changes in the price of United States Natural Gas Fund, LP units will not closely track changes in the spot price of natural gas. This could happen if the price of the units does not correlate closely with the United States Natural Gas Fund, LP’s net

8

asset value; changes in the United States Natural Gas Fund, LP’s net asset value do not closely correlate with changes in the price of the benchmark natural gas futures contract; or changes in the price of the benchmark natural gas futures contract do not closely correlate with changes in the cash or spot price of natural gas.

• RISKS ASSOCIATED WITH INVESTMENTS IN SECURITIES WITH CONCENTRATION IN THE NATURAL GAS INDUSTRY — The United States Natural Gas Fund, LP invests in exchange-traded futures contracts for natural gas, crude oil, heating oil, gasoline and other petroleum-based fuels. The shares of the United States Natural Gas Fund, LP may be subject to increased price volatility as they are linked to a single industry, market or sector and may be more susceptible to adverse economic, market, political or regulatory occurrences affecting that industry, market or sector.

The prices of these exchange-traded futures contracts are subject to the risks and hazards inherent in this industry, which that can cause prices to widely fluctuate. The exploration for, and production of, natural gas is an uncertain process with many risks. The cost of drilling, completing and operating wells for natural gas is uncertain, and a number of factors can delay or prevent drilling operations or production, including unexpected drilling conditions, pressure or irregularities in formations, equipment, failures or repairs, fires or other accidents, adverse weather conditions, pipeline ruptures or spills and shortages or delays in the availability of drilling rigs and the delivery of equipment. These prices are also subject to economic factors including supply and demand for natural gas, crude oil, heating oil, gasoline and other petroleum-based fuels; changes in interest rates; governmental, agricultural, trade, fiscal, monetary and exchange control programs and policies; weather and climate conditions; changing supply and demand relationships; changes in balances of payments and trade; U.S. and international rates of inflation; currency devaluations and revaluations; U.S. and international political and economic events; and changes in the views of market participants.

• THE PERFORMANCE OF THE SPDR® S&P® HOMEBUILDERS ETF MAY NOT CORRELATE TO THE PERFORMANCE OF ITS TRACKED INDEX — The SPDR® S&P® Homebuilders ETF will generally invest in all of the equity securities included in the index tracked by the SPDR® S&P® Homebuilders ETF (the “Tracked Index”). There may, however, be instances where the investment advisor for the SPDR® S&P® Homebuilders ETF will choose to overweight a stock in the Tracked Index, purchase securities not included in the Tracked Index that the investment advisor for the SPDR® S&P® Homebuilders ETF believes are appropriate to substitute for a security included in the Tracked Index, or utilize various combinations of other available investment techniques in seeking to track accurately the Tracked Index. In addition, the performance of the SPDR® S&P® Homebuilders ETF will reflect additional transaction costs and fees that are not included in the calculation of its Tracked Index. Also, corporate actions with respect to the equity securities included in the Tracked Index (such as mergers and spin-offs) may impact the variance between the SPDR® S&P® Homebuilders ETF and its Tracked Index. Finally, because the shares of the SPDR® S&P® Homebuilders ETF are traded on the NYSE Arca and are subject to market supply and investor demand, the market value of one share of the SPDR® S&P® Homebuilders ETF may differ from the net asset value per share of the SPDR® S&P® Homebuilders ETF. For these reasons, the performance of the SPDR® S&P® Homebuilders ETF may not correlate with the performance of its Tracked Index.

• RISKS ASSOCIATED WITH INVESTMENTS IN SECURITIES WITH CONCENTRATION IN THE HOMEBUILDING INDUSTRY — All or substantially all of the equity securities held by the SPDR® S&P® Homebuilders ETF are issued by companies whose primary business is directly associated with the following sub-industries: homebuilding, home improvement retail and home furnishings. Issuers of the equity securities held by the SPDR® S&P® Homebuilders ETF can be significantly affected by the national, regional and local real estate markets. The homebuilding industry is also sensitive to interest rate fluctuations that can cause changes in the availability of mortgage capital and directly affect the purchasing power of potential home buyers. The building industry can be significantly affected by changes in government spending, consumer confidence, demographic patterns and the level of new and existing home sales. As a result, the value of the securities may be subject to greater volatility and be more adversely affected by a single economic, political or regulatory occurrence affecting the homebuilding industry than a different investment linked to securities of a more broadly diversified group of issuers or issuers in a less volatile industry.

9

The Underlyings

We have derived all information regarding each Underlying contained in this pricing supplement, including, without limitation, their make-up, method of calculation and changes in their components, from publicly available information. We make no representation or warranty as to the accuracy or completeness of this publicly available information. The information on the Underlyings provided herein is just a summary and should be read together with the additional publicly available information. Information contained in the respective Underlying websites and the Bloomberg pages referenced below is not incorporated by reference herein.

For additional information about the Russell 2000® Index and the SPDR® S&P® Homebuilders ETF, see information set forth under “The Reference Indices—The Russell 2000® Index” and “The Reference Funds—The SPDR®Funds—The SPDR® S&P® Homebuilders ETF” in the accompanying underlying supplement.

The United States Natural Gas Fund, LP

The United States Natural Gas Fund, LP, a Delaware limited partnership, is a commodity pool that issues units that may be purchased and sold on the NYSE Arca, Inc. The United States Natural Gas Fund, LP was organized as a limited partnership under Delaware law on April 18, 2007. It is managed and controlled by United States Commodity Funds, LLC (the “General Partner”), formerly known as Victoria Bay Asset Management, LLC. The General Partner is a single member limited liability company formed in Delaware on May 10, 2006 that is registered as a commodity pool operator with the Commodity Futures Trading Commission and is a member of the National Futures Association.

Information provided to or filed with the SEC by the United States Natural Gas Fund, LP pursuant to the Securities Exchange Act of 1934 can be located by reference to SEC file number 001-33096 through the SEC’s website at www.sec.gov. The United States Natural Gas Fund, LP is not a mutual fund or any other type of Investment Company within the meaning of the Investment Company Act of 1940, as amended, and is not subject to regulation thereunder.

The United States Natural Gas Fund, LP invests in exchange-traded futures contracts for natural gas, crude oil, heating oil, gasoline and other petroleum-based fuels, with the objective that changes in percentage terms in the net asset value of the units of United States Natural Gas Fund, LP reflect the changes in percentage terms of the spot price of natural gas delivered at the Henry Hub, in Louisiana as traded on the New York Mercantile Exchange, less the United States Natural Gas Fund, LP’s expenses.

The units of the United States Natural Gas Fund, LP are listed on NYSE Arca, Inc. under the trading symbol “UNG.”

Supplemental Use of Proceeds and Hedging

We intend to use the proceeds of this offering for our general corporate purposes, which may include the refinancing of existing debt outside Switzerland. Some or all of the proceeds we receive from the sale of the securities may be used in connection with hedging our obligations under the securities through one or more of our affiliates. Such hedging or trading activities on or prior to the Trade Date and during the term of the securities (including on the Valuation Date) could adversely affect the value of the Underlyings and, as a result, could decrease the amount you may receive on the securities at maturity. For further information, please refer to “Use of Proceeds and Hedging” in the accompanying product supplement.

10

Historical Information

The following graphs set forth the historical performance of the Russell 2000® Index based on the closing levels of such Underlying from January 1, 2006 through May 23, 2011, the historical performance of the SPDR® S&P® Homebuilders ETF based on the closing levels of one share of such Underlying from January 31, 2006 through May 23, 2011 and the historical performance of the United States Natural Gas Fund, LP based on the closing levels of one share of such Underlying from April 18, 2007 through May 23, 2011. The closing level of the Russell 2000® Index on May 23, 2011 was 814.04. The closing level of one share of the SPDR® S&P® Homebuilders ETF on May 23, 2011 was $18.20. The closing level of one share of the United States Natural Gas Fund, LP on May 23, 2011 was $11.13. We obtained the closing levels below from Bloomberg, without independent verification. We make no representation or warranty as to the accuracy or completeness of the information obtained from Bloomberg. You should not take the historical levels of the Underlyings as an indication of future performance of the Underlyings or the securities. The levels of any of the Underlyings may decrease so that a Knock-In Event occurs and at maturity you will receive a Redemption Amount equal to less than the principal amount of the securities. Any payment on the securities is subject to our ability to pay our obligations as they become due. We cannot give you any assurance that the closing levels of the Underlyings will remain above their respective Knock-In Levels during the Observation Period. If the closing level of any Underlying reaches or falls below its Knock-In Level on any trading day during the Observation Period, and the closing level of the Lowest Performing Underlying on the Valuation Date is less than its Initial Level, then you will lose money on your investment.

For additional information about the Russell 2000® Index and the SPDR® S&P® Homebuilders ETF, see information set forth under “The Reference Indices—The Russell 2000® Index” and “The Reference Funds—The SPDR® Funds—The SPDR® S&P® Homebuilders ETF” in the accompanying underlying supplement, and for additional information about the United States Natural Gas Fund, LP, see “United States Natural Gas Fund, LP” herein.

11

12

Supplemental Information Regarding Certain United States Federal Income Tax Considerations

The amount of the stated interest rate on the security that constitutes interest on the Deposit (as defined in the accompanying product supplement) equals 0.3228%, and the remaining balance constitutes the Option Premium (as defined in the accompanying product supplement). Please refer to “Certain U.S. Federal Income Tax Considerations” in the accompanying product supplement.

Supplemental Plan of Distribution (Conflicts of Interest)

Under the terms and subject to the conditions contained in a distribution agreement dated May 7, 2007, as amended, which we refer to as the distribution agreement, we have agreed to sell the securities to CSSU. The distribution agreement provides that CSSU is obligated to purchase all of the securities if any are purchased.

CSSU proposes to offer the securities at the offering price set forth on the cover page of this pricing supplement and will receive varying underwriting discounts and commissions of $20.00 per $1,000 principal amount of securities. CSSU may re-allow some or all of the discount on the principal amount per security on sales of such securities by other brokers or dealers. If all of the securities are not sold at the initial offering price, CSSU may change the public offering price and other selling terms.

In addition, Credit Suisse International, an affiliate of Credit Suisse may pay referral fees of up to $7.50 per $1,000 principal amount of securities in connection with the distribution of the securities. An affiliate of Credit Suisse has paid or may pay in the future a fixed amount to broker-dealers in connection with the costs of implementing systems to support these securities.

The agent for this offering, CSSU, is our affiliate. In accordance with FINRA Rule 5121, CSSU may not make sales in this offering to any of its discretionary accounts without the prior written approval of the customer. A portion of the net proceeds from the sale of the securities will be used by CSSU or one of its affiliates in connection with hedging our obligations under the securities. For further information, please refer to “Underwriting (Conflicts of Interest)” in the accompanying product supplement.

13

Credit Suisse