| DATED MAY 22, 2012                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          |                                                                                                                                                                                                                                                                                                                                                                                                            |
|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|-----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
| FILED PURSUANT TO RULE 433                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| REGISTRATION NO. 333-173364                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 |
| CATERPILLAR FINANCIAL SERVICES CORPORATION                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  |
| MEDIUM-TERM NOTES, SERIES G, 2.85% NOTES DUE 2022                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |
| SUBJECT                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | FINAL PRICING DETAILS                                                                                                                                                                                                                                                                                                                                                                                           |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        |                                                                                                                                                                                                                                                                                                                                                                                                            |
| Issuer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | Caterpillar Financial Services Corporation                                                                                                                                                                                                                                                                                                                                                                      |
| Title of Securities:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | Medium-Term Notes, Series G, 2.85% Notes Due 2022                                                                                                                                                                                                                                                                                                                                                               |
| Format:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | SEC Registered-Registration Statement Number 333-173364                                                                                                                                                                                                                                                                                                                                                         |
| Trade Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | May 22, 2012                                                                                                                                                                                                                                                                                                                                                                                                    |
| Settlement Date (Original Issue Date):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | May 30, 2012, which is the fifth business day following the Trade Date. Accordingly, purchasers who wish to trade the Medium-Term Notes on the date hereof or the next business day will be required, because the Medium-Term Notes will not initially settle in T+3, to specify an alternative settlement date at the time of such trade to prevent a failed settlement and should consult their own advisors. |
| Maturity Date:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | June 1, 2022                                                                                                                                                                                                                                                                                                                                                                                                    |
| Principal Amount:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | $500,000,000                                                                                                                                                                                                                                                                                                                                                                                                    |
| Price to Public (Issue Price):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | 99.836%                                                                                                                                                                                                                                                                                                                                                                                                         |
| All-in-price:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                               | 99.361%                                                                                                                                                                                                                                                                                                                                                                                                         |
| Pricing Benchmark:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | UST 1.750% Notes due May 15, 2022                                                                                                                                                                                                                                                                                                                                                                               |
| UST Spot (Yield):                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                           | 1.769%                                                                                                                                                                                                                                                                                                                                                                                                          |
| Spread to Benchmark:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | +110 basis points (1.10%)                                                                                                                                                                                                                                                                                                                                                                                       |
| Yield to Maturity:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                          | 2.869%                                                                                                                                                                                                                                                                                                                                                                                                          |
| Net Proceeds to Issuer:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | $496,805,000                                                                                                                                                                                                                                                                                                                                                                                                    |
| Coupon:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | 2.85%                                                                                                                                                                                                                                                                                                                                                                                                           |
| Interest Payment Dates:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                     | Interest will be paid semi-annually on the 1st of each June and December of each year, commencing December 1, 2012 and ending on the Maturity Date                                                                                                                                                                                                                                                              |
| Day Count Convention:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       | 30/360                                                                                                                                                                                                                                                                                                                                                                                                          |
| Denominations:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              | Minimum denominations of $1,000 with increments of $1,000 thereafter                                                                                                                                                                                                                                                                                                                                            |
| Joint Lead Managers & Bookrunners:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | Merrill Lynch, Pierce, Fenner & Smith                     Incorporated (35.00%)                                                                                                                                                                                                                    |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | Citigroup Global Markets Inc. (35.00%)                                                                                                                                                                                                                                                                                                                                                                          |
| Co-Managers:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                | BNP Paribas Securities Corp. (3.00%)                                                                                                                                                                                                                                                                                                                                                                            |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | BNY Mellon Capital Markets, LLC (3.00%)                                                                                                                                                                                                                                                                                                                                                                         |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | Commerz Markets LLC (3.00%)                                                                                                                                                                                                                                                                                                                                                                                     |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | Deutsche Bank Securities Inc. (3.00%)                                                                                                                                                                                                                                                                                                                                                                           |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | HSBC Securities (USA) Inc. (3.00%)                                                                                                                                                                                                                                                                                                                                                                              |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | ING Financial Markets LLC (3.00%)                                                                                                                                                                                                                                                                                                                                                                               |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | Lloyds Securities Inc. (3.00%)                                                                                                                                                                                                                                                                                                                                                                                  |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | Mitsubishi UFJ Securities (USA), Inc. (3.00%)                                                                                                                                                                                                                                                                                                                                                                   |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | Standard Chartered Bank (3.00%)                                                                                                                                                                                                                                                                                                                                                                                 |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | U.S. Bancorp Investments, Inc. (3.00%)                                                                                                                                                                                                                                                                                                                                                                          |
|                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                        | Standard Chartered Bank will not effect any offers or sales of any notes in the United States unless it is through one or more U.S. registered broker-dealers as permitted by the regulations of FINRA.                                                                                                                                                                                                         |
| Billing and Delivery Agent:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                 | Merrill Lynch, Pierce, Fenner & Smith                     Incorporated                                                                                                                                                                                                                             |
| CUSIP:                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                      | 14912L5F4                                                                                                                                                                                                                                                                                                                                                                                                       |
| The issuer has filed a registration statement (including a prospectus) with the SEC for the offering to which this communication relates.  Before you invest, you should read the prospectus in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering.  You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov.  Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling Merrill Lynch, Pierce, Fenner & Smith Incorporated toll free at (800) 294-1322 or Citigroup Global Markets Inc. toll free at (877) 858-5407. |