Offering Circular Supplement OCS

OÅering Circular Supplement (To OÅering Circular Dated January 1, 2007) $1,600,000,000 Freddie Mac Reference REMICSM Series R013 OÅered Classes: REMIC Classes shown below and MACR Classes shown on Appendix A OÅering Terms: The underwriters named below are oÅering the Classes in negotiated transactions at varying prices; we have agreed to buy all of AB, VA, VB and ZA Closing Date: June 19, 2007 REMIC Classes Original Balance Principal Type(1) Class Coupon Interest Type(1) CUSIP Number Final Payment Date AB ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ AX(2) ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ VA ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ VB ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ ZA ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ R ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ RA ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ $1,296,000,000 1,296,000,000 80,000,000 128,000,000 96,000,000 0 0 GMC/SEQ SEQ AD/SEQ SEQ SEQ NPR NPR 6.0% 6.0 6.0 6.0 6.0 0.0 0.0 FIX FIX FIX FIX FIX/Z NPR NPR 31397HNV6 31397HNT1 31397HPB8 31397HPC6 31397HPD4 31397H P 9 3 31397HPA0 December March August October June June December 15, 15, 15, 15, 15, 15, 15, 2021 2035 2017 2026 2037 2037 2021 (1) See Appendix II to the OÅering Circular. (2) This Class backs the Guaranteed Maturity Class and will not be oÅered initially. See General Information Ì Structure of Transaction. The CertiÑcates may not be suitable investments for you. You should not purchase CertiÑcates unless you have carefully considered and are able to bear the associated prepayment, interest rate, yield and market risks of investing in them. Certain Risk Considerations on page S-2 highlights some of these risks. You should purchase CertiÑcates only if you have read and understood this Supplement, the attached OÅering Circular and the documents listed under Available Information. We guarantee principal and interest payments on the CertiÑcates. These payments are not guaranteed by and are not debts or obligations of the United States or any federal agency or instrumentality other than Freddie Mac. The CertiÑcates are not tax-exempt. Because of applicable securities law exemptions, we have not registered the CertiÑcates with any federal or state securities commission. No securities commission has reviewed this Supplement. Lead Underwriters Citi Bear, Stearns & Co. Inc. Credit Suisse Co-Underwriters Morgan Stanley June 15, 2007 JPMorgan UBS Investment Bank CERTAIN RISK CONSIDERATIONS Although we guarantee the payments on the CertiÑcates, and so bear the associated credit risk, as an investor you will bear the other risks of owning mortgage securities. This section highlights some of these risks. You should also read Risk Factors and Prepayment, Yield and Suitability Considerations in the OÅering Circular for further discussions of these risks. The CertiÑcates May Not be Suitable Investments for You. The CertiÑcates are complex securities. You should not purchase CertiÑcates unless you are able to understand and bear the associated prepayment, interest rate, yield and market risks. In particular, the Interest Only, Principal Only, Accrual and Residual Classes have special risks and are not suitable for all investors. Prepayments Can Reduce Your Yield. The yield on your CertiÑcates could be lower than you expect if: ‚ You buy your CertiÑcates at a premium over their principal amount and principal payments are faster than you expect. ‚ You buy your CertiÑcates at a discount to their principal amount and principal payments are slower than you expect. This is especially true for the Principal Only Class. If you buy the Interest Only Class and prepayments are fast, you may not even recover your investment. The CertiÑcates are Subject to Market Risks. You will bear all of the market risks of your investment. The market value of your CertiÑcates will vary over time, primarily in response to changes in prevailing interest rates. If you sell your CertiÑcates when their market value is low, you may experience signiÑcant losses. The underwriters named on the front cover (the ""Underwriters'') intend to make a market for the purchase and sale of the Classes after they are issued, but have no obligation to do so. A secondary market may not develop. Even if one does develop, it may not be liquid enough to allow you to sell your CertiÑcates easily or at your desired price. Our Multiclass CertiÑcates OÅering Circular dated January 1, 2007 (the ""OÅering Circular''), attached to this Supplement, deÑnes many of the terms we use in this Supplement. S-2 TERMS SHEET This Terms Sheet contains selected information about this Series. You should refer to the remainder of this Supplement for further information. In this Supplement, we refer to Classes only by their letter designations. For example, ""R'' refers to the R Class of this Series. Payment Dates We make payments of principal and interest on the CertiÑcates on each monthly Payment Date beginning in July 2007. Form of Classes Regular and MACR Classes: Book-entry on Fed System Residual Classes: CertiÑcated Interest The Fixed Rate Classes bear interest at the Class Coupons shown on the front cover and Appendix A. AO is a Principal Only Class and does not bear interest. See Payments Ì Interest. Notional Class Class Original Notional Principal Amount Reduces Proportionately With AI* * MACR Class. $1,296,000,000 AB (GMC/SEQ) See Payments Ì Interest Ì Notional Class. MACR Classes This Series includes MACR Classes. Appendix A shows the characteristics of the MACR Classes and the Combinations of REMIC and MACR Classes. See Appendix III to the OÅering Circular for a description of MACR CertiÑcates and exchange procedures and fees. Principal REMIC Classes On each Payment Date, we pay: Sequential Pay and Accrual Sequential Pay A B ‚ The Accrual Amount to VA and VB, in that order, until retired, and then to ZA D A B ‚ The Asset Principal Amount to AX, VA, VB and ZA, in that order, until retired D S-3 GMC/ Sequential Pay A ‚‚ On each Payment Date, principal payments allocated to AX, as described above, will B D be distributed to AB, while outstanding See Payments Ì Principal and Prepayment and Yield Analysis. MACR Classes On each Payment Date when MACR CertiÑcates are outstanding, we allocate principal payments from the applicable REMIC CertiÑcates to the related MACR CertiÑcates that are entitled to principal, as described under MACR CertiÑcates in the OÅering Circular. REMIC Status We will form a Single-Tier REMIC Pool and a Guaranteed Maturity REMIC Pool for this Series. We will elect to treat each REMIC Pool as a REMIC under the Code. R and RA will be ""Residual Classes'' and the other Classes shown on the front cover will be ""Regular Classes.'' The Residual Classes will be subject to transfer restrictions. See Certain Federal Income Tax Consequences in this Supplement and the OÅering Circular. Weighted Average Lives (in years)* 0% PSA Prepayment Assumption 100% 230% 350% 500% AB, AC, AD, AE, AF, AG, AH, AI, AJ, AK and AO ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ AX ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ BA ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ VA ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ VB ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ ZA ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ The AssetsÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 13.0 18.9 28.9 5.6 15.1 28.9 20.8 7.6 7.9 23.3 5.6 15.1 23.4 10.8 4.2 4.2 15.4 5.6 11.5 17.4 6.4 3.0 3.0 10.9 5.1 8.4 13.1 4.5 2.2 2.2 7.7 4.2 6.2 9.6 3.2 * We calculate weighted average lives based on the assumptions described in Prepayment and Yield Analysis. The actual weighted average lives are likely to diÅer from those shown, perhaps signiÑcantly. The Assets The ""Assets'' consist of Freddie Mac Gold PCs and Gold Giant PCs (the ""PCs'') with the following characteristics: Principal Balance Original Term (in years) Interest Rate $1,600,000,000 30 6.0% See General Information Ì Structure of Transaction. We have attached a schedule of the PCs that will constitute the Assets as Schedule I to this Supplement. We have agreed to sell the Assets to the Underwriters for inclusion in this Series. S-4 Assumed Mortgage Characteristics (as of June 1, 2007) Principal Balance Remaining Term to Maturity (in months) Loan Age (in months) Per Annum Interest Rate Per Annum Interest Rate of Related PCs 9,400,000 1,266,000 2,338,000 1,586,996,000 $1,600,000,000 $ 357 344 338 347 347* 2 13 18 10 10* 6.630% 6.490 6.430 6.600 6.600* 6.0% 6.0 6.0 6.0 * Weighted average by principal balance. The actual characteristics of the Mortgages diÅer from those shown, in some cases signiÑcantly. See General Information Ì The Mortgages and Schedule I. S-5 AVAILABLE INFORMATION You should purchase CertiÑcates only if you have read and understood this Supplement, the OÅering Circular and the following documents: ‚ Our Mortgage Participation CertiÑcates OÅering Circular dated March 19, 2007, which describes Gold PCs generally. ‚ Our Giant and Other Pass-Through CertiÑcates OÅering Circular dated February 1, 2007, which describes Gold Giant PCs generally. ‚ Our Information Statement dated March 23, 2007 and any subsequent Information Statement and Information Statement Supplements published through the time of purchase. This Supplement incorporates by reference the documents listed above. You should rely only on the most current information provided or incorporated by reference in this Supplement. You can obtain the documents listed above, the Agreement and current information concerning the Assets and the CertiÑcates from our Investor Inquiry Department or our Internet web-site as described on page 4 of the OÅering Circular. You can also obtain the documents listed above from the lead Underwriters at: Citigroup Global Markets Inc. Credit Suisse Securities (USA) LLC J.P. Morgan Securities Inc. Prospectus Department Prospectus Department c/o Broadridge Financial Solutions Brooklyn Army Terminal 11 Madison Avenue Prospectus Department 140 58th Street, Suite 8G New York, New York 10010-3629 1155 Long Island Avenue Brooklyn, New York 11220 (212) 325-2580 Edgewood, New York 11717 (718) 765-6732 (631) 254-7307 GENERAL INFORMATION The Agreement We will create the CertiÑcates under the Multiclass CertiÑcates Agreement dated January 1, 2007 and a Terms Supplement dated the Closing Date (together, the ""Agreement''). You should refer to the Agreement for a complete description of your rights and obligations and those of Freddie Mac. You will acquire your CertiÑcates subject to the terms and conditions of the Agreement, including the Terms Supplement. Form of CertiÑcates The Regular and MACR Classes are issued, held and transferable on the Fed System. The Residual Classes are issued and held in certiÑcated form and are transferable at the oÇce of the Registrar. Only a Fed Participant can be a Holder of a Regular or MACR Class. As an investor in CertiÑcates, you are not necessarily the Holder. See Description of CertiÑcates Ì Form, Holders and Payment Procedures in the OÅering Circular. S-6 Denominations of CertiÑcates See Description of CertiÑcates Ì Form, Holders and Payment Procedures in the OÅering Circular for the minimum denominations of the Classes. Structure of Transaction General This Series has two REMIC Pools, as follows: REMIC Pool Classes Issued from REMIC Pool REMIC Pool Assets Single-Tier Guaranteed Maturity All Regular Classes (other than AB) and R AB and RA The Assets AX* * Underlying REMIC Class. See Description of CertiÑcates Ì Payments Ì Final Payment Dates Ì Guaranteed Maturity Classes in the OÅering Circular. See Description of CertiÑcates Ì REMIC Pool Structures in the OÅering Circular. The Assets The Assets are Gold PCs and Gold Giant PCs. The Assets are shown on Schedule I. We have attached a glossary of terms used on Schedule I as Schedule II to this Supplement. The Mortgages The Mortgages underlying the Assets (the ""Mortgages'') are Ñxed-rate, Ñrst lien residential mortgages and mortgage participations. For purposes of this Supplement, we have made certain assumptions regarding the Mortgages, as shown under Terms Sheet Ì Assumed Mortgage Characteristics. However, the actual characteristics of most of the Mortgages diÅer from those assumed, perhaps signiÑcantly. This is the case even if the weighted average characteristics of the Mortgages are the same as those of mortgages having the characteristics assumed. We will furnish the Assets from our own portfolio. Assets from our portfolio, or from other sources, may emphasize speciÑc Mortgage characteristics, such as loan purpose, source of origination, geographic distribution or loan size, or speciÑc borrower characteristics, such as credit rating or equity in the property. You can obtain information about the underlying Mortgage characteristics for the Assets from our Internet web-site. PAYMENTS Payment Dates; Record Dates We make payments of principal and interest on the CertiÑcates on each Payment Date, beginning in the month following the Closing Date. A ""Payment Date'' is the 15th of each month or, if the 15th is not a Business Day, the next Business Day. On each Payment Date, any payment on a CertiÑcate is made to the Holder of record as of the end of the preceding calendar month (a ""Record Date''). S-7 Method of Payment You will receive payments on your CertiÑcates in the manner described under Description of CertiÑcates Ì Form, Holders and Payment Procedures in the OÅering Circular. Categories of Classes For purposes of principal and interest payments, we have categorized the Classes as shown under ""Principal Type'' and ""Interest Type'' on the front cover and Appendix A. Appendix II to the OÅering Circular explains the abbreviations used for categories of Classes. Interest We pay 30 days' interest on each Payment Date to the Holders of each Class on which interest has accrued, except that the Accrual Class receives payments as described below. We calculate each interest payment on the outstanding balance of the Class as of the related Record Date and on the basis of a 360-day year of twelve 30-day months. Accrual Period The ""Accrual Period'' for each Payment Date is the preceding calendar month. Fixed Rate Classes The Fixed Rate Classes bear interest at the Class Coupons shown on the front cover and Appendix A. Principal Only Class The Principal Only Class is shown under Terms Sheet Ì Interest. It does not bear interest. Notional Class The Notional Class does not receive principal payments. For calculating interest payments, it has a notional principal amount that will reduce as shown under Terms Sheet Ì Notional Class. Accrual Class ZA is an Accrual Class. The Accrual Class does not receive interest payments; rather, interest accrued on the Accrual Class during each Accrual Period is added to its principal amount on the related Payment Date. We pay principal on the Accrual Class, including accrued interest that has been added to its principal amount, as described under Terms Sheet Ì Principal. Principal We pay principal on each Payment Date to the Holders of the Classes on which principal is then due. Holders receive principal payments on a pro rata basis among the CertiÑcates of their Class. S-8 Amount of Payments The principal payments on the CertiÑcates on each Payment Date equal: ‚ The amount of interest accrued on the Accrual Class during the related Accrual Period and not payable as interest on that Payment Date (the ""Accrual Amount''). ‚ The amount of principal required to be paid in the same month on the Assets (the ""Asset Principal Amount''). Allocation of Payments On each Payment Date, we pay the Accrual Amount and the Asset Principal Amount for that Payment Date as described under Terms Sheet Ì Principal. Class Factors General We make Class Factors available on or about the Ñfth business day of each month after the Closing Date. See Description of CertiÑcates Ì Payments Ì Class Factors in the OÅering Circular. Use of Factors You can calculate principal and interest payments by using the Class Factors. For example, the reduction (or for the Accrual Class, the increase) in the balance of a CertiÑcate in February will equal its original balance times the diÅerence between its January and February Class Factors. The amount of interest to be paid on (or for the Accrual Class, added to the principal amount of) a CertiÑcate in February will equal 30 days' interest at its Class Coupon, accrued during the related Accrual Period, on the balance of that CertiÑcate determined by its January Class Factor. Guarantees We guarantee to each Holder of a CertiÑcate the timely payment of interest at its Class Coupon and the payment of its principal amount as described in this Supplement. See Description of CertiÑcates Ì Payments Ì Guarantees in the OÅering Circular. 1% Clean-up Call We have a 1% Clean-up Call Right as to the Single-Tier REMIC Pool. If we exercise this right, all of the Classes then outstanding will be paid in full and will retire. See Description of CertiÑcates Ì Payments Ì 1% Clean-up Call in the OÅering Circular. Residual Proceeds Upon surrender of their CertiÑcates to the Registrar, the Holders of each Residual Class will receive the proceeds of any remaining assets of the related REMIC Pool after all required principal and interest payments on the Classes have been made. Any remaining assets are likely to be insigniÑcant. See Description of CertiÑcates Ì Payments Ì Residual Classes in the OÅering Circular. S-9 PREPAYMENT AND YIELD ANALYSIS General Mortgage Prepayments The rates of principal payments on the Assets and the CertiÑcates will depend on the rates of principal payments, including prepayments, on the underlying Mortgages. The Mortgages are subject to prepayment at any time without penalty. Mortgage prepayment rates Öuctuate continuously and, in some market conditions, substantially. See Prepayment, Yield and Suitability Considerations Ì Prepayments in the OÅering Circular for a discussion of Mortgage prepayment considerations and risks. Yield As an investor in the CertiÑcates, your yield will depend on: ‚ Your purchase price. ‚ The rate of principal payments on the underlying Mortgages. ‚ The actual characteristics of the underlying Mortgages. ‚ If you own an interest-bearing Class, the delay between its Accrual Period and the related Payment Date. See Prepayment, Yield and Suitability Considerations Ì Yields in the OÅering Circular for a discussion of yield considerations and risks. Suitability The CertiÑcates may not be suitable investments for you. See Prepayment, Yield and Suitability Considerations Ì Suitability in the OÅering Circular for a discussion of suitability considerations and risks. Modeling Assumptions To prepare the tables in this Supplement, we have made several assumptions. Unless otherwise noted, each table employs the following assumptions (the ""Modeling Assumptions''), among others: ‚ The Mortgages have the characteristics shown under Terms Sheet Ì Assumed Mortgage Characteristics. ‚ The Classes and Assets always receive payments on the 15th of the month, whether or not a Business Day. ‚ We do not exercise our 1% Clean-up Call Right. ‚ Each Class is outstanding from the Closing Date to retirement and no exchanges occur. The Modeling Assumptions, like any other stated assumptions, are likely to diÅer from actual experience in many cases. For example, the Mortgages have characteristics more diverse than those assumed, many Payment Dates will occur on a Business Day after the dates assumed and we may exercise our 1% Clean-up Call Right. Moreover, Mortgage prepayment rates will diÅer from the S-10 percentages of PSA shown in the tables. These diÅerences will aÅect the actual payment behavior, weighted average lives and yields of the Classes, perhaps signiÑcantly. See Prepayment, Yield and Suitability Considerations Ì Tabular Information in Supplements in the OÅering Circular for descriptions of weighted average life and yield calculations and the PSA prepayment model. Prepayment and Weighted Average Life Considerations Accretion Directed Class Payments of principal on the Accretion Directed Class should be stable under relatively slow prepayment scenarios because the Accrual Amount will be dedicated to making principal payments on that Class until it retires. The weighted average life of the Accretion Directed Class cannot exceed its weighted average life as shown in the following table under any prepayment scenario, even a scenario where there are no prepayments. Based on the Modeling Assumptions, the Accretion Directed Class would retire on, but not before, its Final Payment Date if the underlying Mortgages prepay at any constant rate at or below the rate shown for that Class until it retires. The principal payment stability of the Accretion Directed Class is supported primarily by its receipt of the Accrual Amount. It is protected against early retirement by the Classes shown in the table. When those Classes retire, however, the Accretion Directed Class, if outstanding, will become sensitive to Mortgage prepayments and may retire before its Final Payment Date. Accretion Directed Class Maximum Weighted Average Life (in years) Prepayment Rate at or below Class Final Payment Date Protected By VA ÏÏÏÏÏ 5.6 August 15, 2017 239% PSA AX and the Guaranteed Maturity Classes The underlying Mortgages have characteristics that diÅer from the Modeling Assumptions. As a result, even if the Mortgages prepay at a rate at or somewhat below the rate shown for the Accretion Directed Class, that Class could retire before its Final Payment Date and its weighted average life could shorten. Sequential Pay Classes The Sequential Pay Classes receive principal payments from the Asset Principal Amount in a prescribed sequence. MACR Classes The payment characteristics of the MACR Classes reÖect the payment characteristics of their related REMIC Classes. S-11 Declining Balances Table The following table shows: ‚ Percentages of original balances (as of the Closing Date) that would be outstanding after each of the Payment Dates shown at various percentages of PSA. ‚ Corresponding weighted average lives. We have prepared this table using the Modeling Assumptions. However, for 0% PSA we have assumed that each Mortgage (a) has an interest rate 2.5% higher than that of the PCs and (b) has a remaining term to maturity of 360 months and a loan age of 0 months. We have calculated weighted average lives for the Notional Class assuming that a reduction in its notional principal amount is a reduction in principal balance. S-12 Percentages of Original Balances Outstanding* and Weighted Average Lives AB, AC, AD, AE, AF, AG, AH, AI, AJ, AK and AO Date PSA Prepayment Assumption 0% 100% 230% 350% 500% AX PSA Prepayment Assumption 0% 100% 230% 350% 500% BA PSA Prepayment Assumption 0% 100% 230% 350% 500% VA PSA Prepayment Assumption 0% 100% 230% 350% 500% Closing Date ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 100 June 15, 2008ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 99 June 15, 2009ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 98 June 15, 2010ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 97 June 15, 2011ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 96 June 15, 2012ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 94 June 15, 2013ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 93 June 15, 2014ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 91 June 15, 2015ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 90 June 15, 2016ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 88 June 15, 2017ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 86 June 15, 2018ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 84 June 15, 2019ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 81 June 15, 2020ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 79 June 15, 2021ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 76 June 15, 2022ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2023ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2024ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2025ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2026ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2027ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2028ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2029ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2030ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2031ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2032ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2033ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2034ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2035ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2036ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 June 15, 2037ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 0 Weighted Average Life (Years)ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 13.0 100 95 87 79 71 64 57 51 45 39 34 29 24 20 16 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7.6 100 89 74 59 47 36 27 19 12 7 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.2 100 84 62 43 29 17 8 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3.0 100 78 49 27 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 100 99 98 97 96 94 93 91 90 88 86 84 81 79 76 73 70 66 62 58 53 48 43 36 30 23 15 7 0 0 0 18.9 100 95 87 79 71 64 57 51 45 39 34 29 24 20 16 12 8 5 2 0 0 0 0 0 0 0 0 0 0 0 0 7.9 100 89 74 59 47 36 27 19 12 7 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.2 100 84 62 43 29 17 8 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3.0 100 78 49 27 11 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2.2 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 89 46 0 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 95 82 71 60 50 40 31 22 14 7 0 0 100 100 100 100 100 100 100 100 100 100 100 91 76 63 53 43 36 29 24 19 15 12 9 7 5 4 2 1 1 0 0 100 100 100 100 100 100 100 100 80 62 48 37 28 21 16 12 9 7 5 4 3 2 1 1 1 0 0 0 0 0 0 100 100 100 100 100 100 70 48 33 22 15 10 7 5 3 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 7.7 100 93 85 76 68 58 48 38 26 14 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5.6 100 93 85 76 68 58 48 38 26 14 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5.6 100 93 85 76 68 58 48 38 26 14 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5.6 100 93 85 76 68 58 48 38 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5.1 100 93 85 76 68 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4.2 28.9 23.3 15.4 10.9 VB Date PSA Prepayment Assumption 0% 100% 230% 350% 500% ZA PSA Prepayment Assumption 0% 100% 230% 350% 500% The Assets PSA Prepayment Assumption 0% 100% 230% 350% 500% Closing Date ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2008ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2009ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2010ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2011ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2012ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2013ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2014ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2015ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2016ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2017ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2018ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2019ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2020ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2021ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2022ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2023ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2024ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2025ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2026ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2027ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2028ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2029ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2030ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2031ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2032ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2033ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2034ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2035ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2036ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ June 15, 2037ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 100 100 100 100 100 100 100 100 100 100 100 93 84 74 64 53 42 30 17 4 0 0 0 0 0 0 0 0 0 0 0 100 100 100 100 100 100 100 100 100 100 100 93 84 74 64 53 42 30 17 0 0 0 0 0 0 0 0 0 0 0 0 15.1 100 100 100 100 100 100 100 100 100 100 100 71 26 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11.5 100 100 100 100 100 100 100 100 69 18 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8.4 100 100 100 100 100 100 58 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6.2 100 106 113 120 127 135 143 152 161 171 182 193 205 218 231 245 261 277 294 312 317 317 317 317 317 317 317 317 282 147 0 28.9 100 106 113 120 127 135 143 152 161 171 182 193 205 218 231 245 261 277 294 300 261 224 190 157 127 98 71 45 21 0 0 23.4 100 106 113 120 127 135 143 152 161 171 182 193 205 200 166 138 113 93 75 61 48 38 30 23 17 12 8 5 2 0 0 17.4 100 106 113 120 127 135 143 152 161 171 151 116 89 68 52 39 30 22 16 12 9 6 5 3 2 1 1 0 0 0 0 13.1 100 106 113 120 127 135 143 152 104 71 49 33 22 15 10 7 5 3 2 1 1 1 0 0 0 0 0 0 0 0 0 9.6 100 99 98 98 97 95 94 93 92 90 89 87 85 83 81 78 75 72 69 66 62 58 53 49 43 37 31 24 17 9 0 20.8 100 96 89 83 76 71 65 60 55 51 47 43 39 35 32 29 26 23 20 18 16 13 11 9 8 6 4 3 1 0 0 10.8 100 91 79 67 57 48 41 34 29 24 21 17 14 12 10 8 7 6 5 4 3 2 2 1 1 1 0 0 0 0 0 6.4 100 87 70 54 42 33 25 20 15 12 9 7 5 4 3 2 2 1 1 1 1 0 0 0 0 0 0 0 0 0 0 4.5 100 82 59 41 28 19 13 9 6 4 3 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3.2 Weighted Average Life (Years)ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 15.1 * Rounded to nearest whole percentage. S-13 Yield Tables The following tables show pre-tax yields to maturity (corporate bond equivalent) of speciÑed Classes at various percentages of PSA. We have prepared these tables using the Modeling Assumptions and the assumed prices in the table captions, plus accrued interest, if any. Actual sales will not necessarily occur at the assumed prices. Pre-Tax Yields AI Class (Assumed Price: 20.0%) 100% PSA 230% PSA 302% PSA 350% PSA 500% PSA 21.1% 8.2% 0.0% AO Class (Assumed Price: 80.0%) (5.8)% (24.3)% 100% PSA 230% PSA 350% PSA 500% PSA 3.1% 5.6% 8.0% 10.9% S-14 FINAL PAYMENT DATES The Final Payment Date for each Class is the latest date by which it will be paid in full and will retire. Except in the case of the Guaranteed Maturity Classes, we calculate Final Payment Dates using highly conservative assumptions. The actual retirement of each Class may occur earlier than its Final Payment Date. See Description of CertiÑcates Ì Payments Ì Final Payment Dates in the OÅering Circular. CERTAIN FEDERAL INCOME TAX CONSEQUENCES General Any discussion of tax matters herein and in the OÅering Circular was not intended or written to be used, and cannot be used, by any person for the purpose of avoiding tax penalties that may be imposed on such person. Such discussion was written to support the promotion and marketing of the CertiÑcates. Investors should consult their own independent tax advisors regarding the CertiÑcates and each investor's particular circumstances. Subject to the assumptions described under Certain Federal Income Tax Consequences Ì REMIC Election in the OÅering Circular, the Single-Tier REMIC Pool and the Guaranteed Maturity REMIC Pool will each qualify as a REMIC for federal income tax purposes. Regular Classes The Regular Classes are ""regular interests'' in the Single-Tier REMIC Pool and the Guaranteed Maturity REMIC Pool, as applicable. See General Information Ì Structure of Transaction. They are treated as debt instruments for federal income tax purposes and may be issued with original issue discount (""OID'') or at a premium. Based in part on information provided by the Underwriters regarding the initial prices at which they would have expected to sell or will sell substantial portions of the Regular Classes, we expect to report income to the Internal Revenue Service and to Holders of the Regular Classes (other than the Underlying REMIC Class) assuming they are issued as follows: ‚ OID: ZA. ‚ De Minimis OID: AB and VB. ‚ Premium: VA. OID generally results in recognition of taxable income in advance of the receipt of cash attributable to that income. The Pricing Speed used for OID and premium calculations is 230% PSA. For purposes of OID and premium calculations with respect to the Guaranteed Maturity Class, however, we will also take into account the mandatory retirement of that Class on its Final Payment Date. See Certain Federal Income Tax Consequences Ì Taxation of Regular Classes Ì Original Issue Discount and Ì Premium in the OÅering Circular. Mortgage prepayment rates will diÅer, perhaps signiÑcantly, from the Pricing Speed. Residual Classes Each Residual Class is the ""residual interest'' in its related REMIC Pool. See General Information Ì Structure of Transaction. Special tax considerations apply to the Residual Classes. S-15 The taxation of the Residual Classes can produce a signiÑcantly less favorable after-tax return than if (a) the Residual Classes were taxable as debt instruments or (b) no portion of the taxable income on the Residual Classes were treated as ""excess inclusions.'' In certain periods, taxable income and the resulting tax liability on a Residual Class may exceed any payments on that Class. See Certain Federal Income Tax Consequences Ì Taxation of Residual Classes in the OÅering Circular. A substantial tax may be imposed on certain transferors of a Residual Class and certain beneÑcial owners of a Residual Class that are ""pass-through entities.'' See Certain Federal Income Tax Consequences Ì Transfers of Interests in a Residual Class Ì DisqualiÑed Organizations in the OÅering Circular. You should not purchase a Residual Class before consulting your tax advisor. We will report with respect to the Guaranteed Maturity REMIC Pool assuming that such REMIC Pool owns an undivided interest in the Underlying REMIC Class and that the basis of such REMIC Pool in the Underlying REMIC Class includes any value associated with Freddie Mac's obligation to make a contribution to that REMIC Pool on the Final Payment Date for the Guaranteed Maturity Class pursuant to Freddie Mac's guarantee. We do not expect the Holders of RA to have any material adverse tax consequences as a result of this treatment, but investors should consult their tax advisors regarding this matter. Certain Transfers of Residual Classes The REMIC Regulations disregard: 1. A transfer of a ""noneconomic residual'' unless no signiÑcant purpose of the transfer is to impede the assessment or collection of tax. 2. Except in certain cases, a transfer of a residual interest to a foreign investor or a transfer of a residual interest from a foreign investor to a U.S. investor. Accordingly, the Agreement prohibits the transfer of an interest in a Residual Class to or from a foreign investor without our written consent. See Certain Federal Income Tax Consequences Ì Transfers of Interests in a Residual Class Ì Additional Transfer Restrictions in the OÅering Circular. In the case of a transfer that is disregarded, the transferor would continue to be treated as the owner of the residual interest and thus would continue to be subject to tax on its allocable portion of the net income of the REMIC. MACR Classes The arrangement under which the MACR Classes are created (the ""MACR Pool'') will be classiÑed as a grantor trust under subpart E, part I of subchapter J of the Internal Revenue Code. The interests in the Regular Classes that have been exchanged for the MACR Classes will be the assets of the MACR Pool and the MACR Classes will represent beneÑcial ownership of these assets. For a discussion of certain federal income tax consequences applicable to the MACR Classes, see Certain Federal Income Tax Consequences Ì Taxation of MACR Classes, Ì Exchanges of MACR Classes and Regular Classes and Ì Taxation of Certain Foreign Investors in the OÅering Circular. S-16 ERISA CONSIDERATIONS Fiduciaries of ERISA plans should review ERISA Considerations in the OÅering Circular. ACCOUNTING CONSIDERATIONS You should consult your accountant for advice on the appropriate accounting treatment for your CertiÑcates. See Accounting Considerations in the OÅering Circular. LEGAL INVESTMENT CONSIDERATIONS You should consult your legal advisor to determine whether the CertiÑcates are a legal investment for you and whether you can use the CertiÑcates as collateral for borrowings. See Legal Investment Considerations in the OÅering Circular. PLAN OF DISTRIBUTION Under an agreement with the Underwriters, we have agreed to sell all of the REMIC CertiÑcates to the Underwriters in exchange for the Assets. We have agreed to buy all of AB, VA, VB and ZA from the Underwriters. We expect that we will oÅer AB (or one or more related MACR Classes) to the public through one or more underwriters in the future. We will describe any such oÅering in a Supplement to this OÅering Circular Supplement. The Underwriters intend to: ‚ Redeliver the Underlying REMIC Class to us for inclusion in the Guaranteed Maturity REMIC Pool. ‚ OÅer the Residual Classes in negotiated transactions at varying prices to be determined at the time of sale. The Underwriters are oÅering the Residual Classes subject to their issuance by us and subject to the Underwriters' right to reject any order. The Underwriters may make sales to or through securities dealers. These dealers may receive compensation in the form of discounts, concessions or commissions from the Underwriters and commissions from any purchasers for which they act as agents. Our agreement with the Underwriters provides that we will indemnify them against certain liabilities. The CertiÑcates are not being oÅered in any jurisdiction that prohibits their oÅer. See Appendix B for more information on jurisdictional restrictions. LEGAL MATTERS Our General Counsel (or one of our Deputy General Counsels) will render an opinion on the legality of the CertiÑcates. Cleary Gottlieb Steen & Hamilton LLP is representing the Underwriters on legal matters concerning the CertiÑcates. S-17 Appendix A Available Combinations Exchange Proportions(1) MACR Class Maximum Original Balance Exchange Proportions(1) MACR CertiÑcates Class Principal Type(2) Coupon Interest Type(2) CUSIP Number Final Payment Date REMIC CertiÑcates REMIC Class Original Balance Combination 1 AB 100% AC AD AE AF AG AH AI AJ AK AO BA $ 304,000,000 100% SEQ 6.0% FIX $1,296,000,000 1,296,000,000 1,296,000,000 1,296,000,000 1,269,551,020 1,244,160,000 1,296,000,000 1,219,764,705 1,196,307,692 1,296,000,000 N/A N/A N/A N/A N/A N/A N/A N/A N/A N/A GMC/SEQ GMC/SEQ GMC/SEQ GMC/SEQ GMC/SEQ GMC/SEQ NTL(GMC/SEQ) GMC/SEQ GMC/SEQ GMC/SEQ 5.5% 5.625 5.75 5.875 6.125 6.25 6.0 6.375 6.5 0.0 FIX FIX FIX FIX FIX FIX FIX/IO FIX FIX PO 31397HNW4 31397HNX2 31397HNY0 31397H NZ7 31397H P 2 8 31397H P 3 6 31397H P 4 4 31397H P 5 1 31397H P 6 9 31397H P 7 7 31397H P 8 5 $1,296,000,000 December December December December December December December December December December 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 2021 2021 2021 2021 2021 2021 2021 2021 2021 2021 June 15, 2037 Combination 2 VA VB ZA 26.3157894737% 42.1052631579 31.5789473684 $ 80,000,000 128,000,000 96,000,000 (1) Exchange proportions are constant proportions of the original balances of the REMIC Classes or MACR Classes, as applicable. In accordance with the exchange proportions, you may exchange REMIC CertiÑcates for MACR CertiÑcates, and vice versa. The exchange proportions are not applicable to the MACR Classes designated by ""N/A.'' See Appendix III to the OÅering Circular for a description of ""ratio-stripping'' MACR Classes of this type. (2) See Appendix II to the OÅering Circular. A-1 Appendix B JURISDICTIONAL RESTRICTIONS General This oÅering may be made and the CertiÑcates may be oÅered or sold only where it is legal to do so. The Underwriters have represented and agreed that they will comply with all applicable laws and regulations in each jurisdiction outside of the United States in which they may conduct an oÅering of CertiÑcates. The OÅering Circular and this Supplement do not constitute an oÅer to sell or buy or a solicitation of an oÅer to buy or sell any securities other than the CertiÑcates or an oÅer to sell or buy or a solicitation of an oÅer to buy or sell CertiÑcates in any jurisdiction or in any other circumstance in which such an oÅer or solicitation is unlawful or not authorized. Hong Kong Each Underwriter has represented and agreed that: (a) it has not oÅered or sold, and will not oÅer or sell, in Hong Kong, by means of any document, any CertiÑcates other than (i) to ""professional investors'' as deÑned in the Securities and Futures Ordinance (Cap. 571) of Hong Kong and any rules made under that Ordinance or (ii) in other circumstances which do not result in the document being a ""prospectus'' as deÑned in the Companies Ordinance (Cap. 32) of Hong Kong or which do not constitute an oÅer to the public within the meaning of that Ordinance; and (b) it has not issued, or had in its possession for the purposes of issuing, and will not issue, or have in its possession for the purposes of issue, whether in Hong Kong or elsewhere, any advertisement, invitation or document relating to the CertiÑcates, which is directed at, or the contents of which are likely to be accessed or read by, the public in Hong Kong (except if permitted to do so under the securities laws of Hong Kong) other than with respect to CertiÑcates which are, or are intended to be, disposed of only to persons outside Hong Kong or only to ""professional investors'' as deÑned by the Securities and Futures Ordinance (Cap. 571) of Hong Kong and any rules made under that Ordinance. Japan The CertiÑcates have not been and will not be registered under the Securities and Exchange Law of Japan. Each Underwriter has represented and agreed that it has not oÅered or sold, and will not oÅer or sell, directly or indirectly, any of the CertiÑcates in Japan or to or for the beneÑt of any resident of Japan (which term means any person having his place of residence or domicile in Japan, any corporation or other legal entity organized under the laws of Japan except for its branches or other oÇces located outside Japan and, with respect to any corporation or other legal entity organized under the laws of a jurisdiction other than Japan, its branches and oÇces located in Japan) or to any person for reoÅering or resale, directly or indirectly, in Japan or to any resident of Japan except under an exemption from the registration requirements of and in compliance with the Securities and Exchange Law of Japan and any other applicable laws, regulations and ministerial guidelines of Japan. B-1 People's Republic of China The Underwriters have acknowledged that the CertiÑcates have not been, and will not be, registered under the relevant laws of the People's Republic of China. Accordingly, each Underwriter has represented, warranted and agreed to and with Freddie Mac that it has not made, and will not make, any oÅers, promotions, solicitations for sales of or for, as the case may be, any CertiÑcates in the People's Republic of China, except where permitted by the China Securities Regulatory Commission or where the activity otherwise is permitted under the laws of the People's Republic of China. B-2 Schedule I PC Schedule(1) Original PC UPB (Whole Pool) Original PC UPB Current PC UPB WAC PC Coupon Issue Date Final Payment Date WARM WALA PC Pool Number PC CUSIP $ $ $ I-1 A38582 A42200 A42675 A44178 A44236 A44350 A50838 A51316 A51348 A51607 A52536 A52880 A53164 A54039 A54224 A57703 A57765 A57989 A58223 A58275 A58317 A58610 A59376 A59383 A60058 A60271 A60424 A60452 A60841 A60973 A61683 A61712 A61734 A61828 A62165 A62685 G01989 G02343 G02391 G02422 G02470 G02471 G02513 G02650 31297URB8 3128K2NR6 3128K26L8 3128K4UB9 3128K4V51 3128K4ZP3 3128KC4X2 3128KDN92 3128KDP90 3128KDYC3 3128KEY98 3128KFFV7 3128KFQR4 3128KGPY8 3128KGVR6 3128KLRY5 3128KLTW7 3128KL2W6 3128KMD44 3128KMFQ3 3128KMG25 3128KMR72 3128KNMZ3 3128KNM83 3128KQB39 3128KQJQ0 3128KQPH3 3128KQQD1 3128KQ5A0 3128KRCJ1 3128KR2Q6 3128KR3V4 3128KR4T8 3128KSA51 3128KSMN9 3128KS6W7 3128LXF62 3128LXS84 3128LXUQ1 3128M4AX1 3128M4CF8 3128M4CG6 3128M4DS9 3128M4H30 4,818,984 1,778,651 18,508,613 51,026,057 11,082,762 10,000,018 21,416,993 182,943,640 18,273,323 397,650,966 279,591,437 7,967,902 42,993,164 68,937,382 37,189,175 3,987,120 1,191,443 4,229,554 61,963,040 2,162,698 33,796,436 61,203,231 1,499,321 1,477,301 105,480,365 48,280,769 32,287,264 1,899,541 5,382,214 9,517,147 5,112,937 2,884,710 91,805,078 2,988,695 21,174,191 8,792,498 54,532,529 1,000,000,000 1,800,000,000 2,300,000,000 1,263,005,000 1,500,000,000 1,329,936 33,028,375 775,916 247,320 400,000 50,944 75,000 50,321 115,206 126,437 183,708 480,032 467,212 1,671,619 940,000 55,366 350,027 430,394 187,293 514,070 274,811 55,229 315,120 493,849 78,784 955,140 146,822 685,892 274,192 599,541 844,399 578,610 62,922 500,050 606,836 1,000,813 707,058 192,498 300,000 602,780,199 597,434,328 183,109,494 2,186,387 338,841,232 1,329,936 9,978,375 695,203 179,186 356,985 45,326 67,435 45,653 99,893 109,793 159,934 428,656 393,218 1,537,074 899,288 49,370 330,000 428,108 186,519 512,278 263,358 55,041 308,829 486,671 78,634 953,409 146,179 685,146 273,942 599,010 843,667 578,110 62,868 499,613 604,447 1,000,000 707,058 192,498 254,254 538,461,665 538,467,393 166,094,859 1,996,418 311,877,189 1,304,730 9,480,263 6.367% 6.750 6.420 6.375 6.543 6.308 6.500 6.577 6.875 6.568 6.750 6.801 6.550 6.625 6.548 6.625 6.727 6.813 6.446 6.338 6.756 6.355 6.512 6.612 6.440 6.358 6.472 6.615 6.806 6.735 6.765 6.739 6.623 7.079 6.250 6.597 6.434 6.625 6.606 6.578 6.622 6.539 6.435 6.575 6.0% 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 6.0 October January February March March March July August August August September September October November November February February February March March March March April April May May May May May May May May May May June June December September October November December December December February 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2005 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2006 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2007 2005 2006 2006 2006 2006 2006 2006 2007 October January February March April April July August August August September October October November November February February March March February March March February March May May May May May May May April May May June July December October November December November November November January 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 2035 2036 2036 2036 2036 2036 2036 2036 2036 2036 2036 2036 2036 2036 2036 2037 2037 2037 2037 2037 2037 2037 2037 2037 2037 2037 2037 2037 2037 2037 2037 2037 2037 2037 2037 2037 2035 2036 2036 2036 2036 2036 2036 2037 337 338 339 342 339 339 347 347 348 347 348 347 350 351 351 353 355 356 354 342 355 356 352 357 358 358 358 359 357 359 358 357 358 358 360 360 337 347 347 348 347 347 343 349 20 17 16 15 15 15 11 11 10 11 10 9 8 8 7 5 5 4 4 4 3 3 4 3 2 1 2 1 1 1 2 3 2 1 0 0 19 10 10 10 10 10 7 9 (1) Information is as of June 1, 2007. PC Pool Number Original PC UPB Current PC UPB WAC PC Coupon Issue Date WARM PC CUSIP Original PC UPB (Whole Pool) Final Payment Date WALA G03010 G08101 G08106 G08123 G08140 G08187 3128M4VB6 3128MJDF4 3128MJDL1 3128MJD56 3128MJEN6 3128MJF54 $ 15,160,230 745,639,160 923,642,991 1,056,079,615 1,368,044,336 646,074,947 $ 15,160,230 261,113 945,000 533,607 104,397 667,672 14,943,217 221,407 810,689 475,062 91,532 658,927 $1,600,000,000(2) $ 6.536% 6.389 6.424 6.404 6.518 6.450 6.595(3) 6.0% 6.0 6.0 6.0 6.0 6.0 May December January April July March 1, 1, 1, 1, 1, 1, 2007 2005 2006 2006 2006 2007 February December January April July March 1, 1, 1, 1, 1, 1, 2037 2035 2036 2036 2036 2037 348 337 338 341 345 355 347(3) 10 18 18 14 11 4 10(3) (2) Total may not equal sum of column due to rounding. (3) Weighted average by current principal balance. I-2 Schedule II GLOSSARY OF TERMS USED IN THE PC SCHEDULE Capitalized terms used but not deÑned in this Glossary are deÑned in our Mortgage Participation CertiÑcates OÅering Circular, dated March 19, 2007, or in any related pool supplements. PC Pool Number Ì Unique six-character designation assigned to identify each Freddie Mac PC Pool. The Ñrst two or three characters are known as the ""PreÑx.'' Freddie Mac's Internet WebSite (www.freddiemac.com) provides a current list of PreÑxes and their description. PC CUSIP Ì Unique nine-character designation assigned to each PC Pool and used to identify PC pool on book-entry records of Federal Reserve Bank. Original PC UPB (Whole Pool) Ì Original Unpaid Principal Balance (OUPB) of entire PC Pool of which the PCs included in REMIC Pool are a part. The OUPB of a PC Pool is determined as of a certain date. Original PC UPB Ì OUPB of the PCs included in REMIC Pool. Current PC UPB Ì Unpaid Principal Balance (UPB) of the PCs included in REMIC Pool, as of the beginning of the month of formation of the REMIC Pool. WAC Ì Most recently disclosed weighted average of the coupons of mortgages contained in each PC Pool included in REMIC Pool, as of the settlement date of REMIC Pool. PC Coupon Ì Annual rate of interest at which interest is passed through to holder of a PC. Issue Date Ì Corresponds to Ñrst day of the month of formation of the PC Pool. Final Payment Date Ì Corresponds to Ñrst day of the month in which the Final Payment Date for PC Pool occurs. WARM Ì Most recently disclosed, calendar-adjusted weighted average of the remaining terms to maturity (in months) of mortgages contained in each PC Pool included in the REMIC Pool, as of settlement date of REMIC Pool. WALA Ì Most recently disclosed, calendar-adjusted, weighted average of the number of months since note origination of the mortgages contained in each PC Pool included in the REMIC Pool, as of the settlement date of the REMIC Pool. II-1 If you intend to purchase CertiÑcates, you should rely only on the information in this Supplement and the OÅering Circular, including the information in the disclosure documents that we have incorporated by reference. We have not authorized anyone to provide you with diÅerent information. This Supplement, the OÅering Circular and the incorporated documents may not be correct after their dates. We are not oÅering the CertiÑcates in any jurisdiction that prohibits their oÅer. $1,600,000,000 Freddie Mac Reference REMICSM Series R013 TABLE OF CONTENTS Description Page OÅering Circular Supplement Certain Risk Considerations ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Terms Sheet ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Available InformationÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ General Information ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ The Agreement ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Form of CertiÑcates ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Denominations of CertiÑcates ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Structure of Transaction ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ The Mortgages ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Payments ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Payment Dates; Record DatesÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Method of Payment ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Categories of Classes ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Interest ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ PrincipalÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Class Factors ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ GuaranteesÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 1% Clean-up Call ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Residual Proceeds ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Prepayment and Yield Analysis ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ GeneralÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Prepayment and Weighted Average Life Considerations ÏÏÏÏÏÏÏÏÏ Declining Balances TableÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Yield Tables ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Final Payment Dates ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Certain Federal Income Tax ConsequencesÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ GeneralÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Regular Classes ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Residual Classes ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ MACR Classes ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ ERISA Considerations ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Accounting ConsiderationsÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Legal Investment Considerations ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Plan of Distribution ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Legal Matters ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Appendix A Ì Available CombinationsÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Appendix B Ì Jurisdictional Restrictions ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Schedule I Ì PC Schedule ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ Schedule II Ì Glossary of Terms Used in the PC Schedule ÏÏÏÏÏÏÏÏÏ S-2 S-3 S-6 S-6 S-6 S-6 S-7 S-7 S-7 S-7 S-7 S-8 S-8 S-8 S-8 S-9 S-9 S-9 S-9 S-10 S-10 S-11 S-12 S-14 S-15 S-15 S-15 S-15 S-15 S-16 S-17 S-17 S-17 S-17 S-17 A-1 B-1 I-1 II-1 Lead Underwriters Citi Credit Suisse JPMorgan Co-Underwriters Bear, Stearns & Co. Inc. Morgan Stanley UBS Investment Bank OÅering Circular Freddie Mac ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 3 Additional InformationÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 4 Summary ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 5 Risk FactorsÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 8 Description of CertiÑcates ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 10 MACR CertiÑcatesÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 22 Prepayment, Yield and Suitability Considerations ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 23 The Agreement ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 29 Certain Federal Income Tax ConsequencesÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 32 ERISA Considerations ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 47 Accounting ConsiderationsÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 48 Legal Investment Considerations ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 48 Plan of Distribution ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 49 Increase in SizeÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ 49 Appendix I Ì Index of Terms ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ I-1 Appendix II Ì Standard DeÑnitions and Abbreviations for ClassesÏÏÏÏ II-1 Appendix III Ì MACR CertiÑcate Exchanges ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ III-1 Appendix IV Ì Retail Class Principal Payments ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ IV-1 Appendix V Ì Interest Rate Indices ÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏÏ V-1 June 15, 2007