UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number 811-21780 - ------------------------------------------------------------------------------- MFS SERIES TRUST XII - ------------------------------------------------------------------------------- (Exact name of registrant as specified in charter) 500 Boylston Street, Boston, Massachusetts 02116 - ------------------------------------------------------------------------------- (Address of principal executive offices) (Zip code) Susan S. Newton Massachusetts Financial Services Company 500 Boylston Street Boston, Massachusetts 02116 - ------------------------------------------------------------------------------- (Name and address of agents for service) Registrant's telephone number, including area code: (617) 954-5000 - ------------------------------------------------------------------------------- Date of fiscal year end: April 30 - ------------------------------------------------------------------------------- Date of reporting period: April 30, 2006 - ------------------------------------------------------------------------------- This Form N-CSR is being filed for the purpose of amending and restating the Form N-CSR filed on July 7, 2006 (Accession No. 0000950156-06-000290), which as a result of a filing error, contained the report of another registrant. M F S(SM) INVESTMENT MANAGEMENT(R) ITEM 1. REPORTS TO STOCKHOLDERS. MFS(R) Mutual Funds 04/30/06 ANNUAL REPORT - ----------------------- --------------------------- 4/30/06 MFS(R) Lifetime Funds - ----------------------- --------------------------- - ---------------------------------------------------------- - ---------------------------------------------------------- - -------------------------------------------------------------------------------------------------- NOT FDIC INSURED MAY LOSE VALUE NO BANK OR CREDIT UNION GUARANTEE NOT A DEPOSIT NOT INSURED BY ANY FEDERAL GOVERNMENT AGENCY OR NCUA/NCUSIF - -------------------------------------------------------------------------------------------------- MFS(R) LIFETIME FUNDS 4/30/06 MFS Lifetime Retirement Income Fund The fund seeks total return through a combination of current income and capital appreciation. MFS Lifetime 2010 Fund The fund seeks a high level of total return consistent with its asset allocation until the approximate retirement year in the fund's name; thereafter, the fund will seek total return through a combination of current income and capital appreciation. MFS Lifetime 2020 Fund The fund seeks a high level of total return consistent with its asset allocation until the approximate retirement year in the fund's name; thereafter, the fund will seek total return through a combination of current income and capital appreciation. MFS Lifetime 2030 Fund The fund seeks a high level of total return consistent with its asset allocation until the approximate retirement year in the fund's name; thereafter, the fund will seek total return through a combination of current income and capital appreciation. MFS Lifetime 2040 Fund The fund seeks a high level of total return consistent with its asset allocation until the approximate retirement year in the fund's name; thereafter, the fund will seek total return through a combination of current income and capital appreciation. THIS REPORT HAS BEEN PREPARED FOR THE GENERAL INFORMATION OF SHAREHOLDERS. IT IS AUTHORIZED FOR DISTRIBUTION TO PROSPECTIVE INVESTORS ONLY WHEN PRECEDED OR ACCOMPANIED BY A CURRENT PROSPECTUS. TABLE OF CONTENTS ---------------------------------------------------- LETTER FROM THE CEO 1 ---------------------------------------------------- PORTFOLIO COMPOSITION 2 ---------------------------------------------------- MANAGEMENT REVIEW 4 ---------------------------------------------------- PERFORMANCE SUMMARY 6 ---------------------------------------------------- EXPENSE TABLES 12 ---------------------------------------------------- PORTFOLIO OF INVESTMENTS 16 ---------------------------------------------------- FINANCIAL STATEMENTS 19 ---------------------------------------------------- NOTES TO FINANCIAL STATEMENTS 28 ---------------------------------------------------- REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM 36 ---------------------------------------------------- TRUSTEES AND OFFICERS 37 ---------------------------------------------------- BOARD REVIEW OF INVESTMENT ADVISORY AGREEMENT 39 ---------------------------------------------------- PROXY VOTING POLICIES AND INFORMATION 39 ---------------------------------------------------- QUARTERLY PORTFOLIO DISCLOSURE 39 ---------------------------------------------------- FEDERAL TAX INFORMATION 39 ---------------------------------------------------- CONTACT INFORMATION BACK COVER LETTER FROM THE CEO [Photo of Robert J. Manning] Dear Shareholders, It has been said that change is the only constant in life. As investors have seen, that theme is still accurate today as we recently have experienced shifting economic cycles because of natural disasters and political instability around the globe. Markets worldwide have fluctuated in the past year as devastating hurricanes had a dramatic effect on the international economy, particularly on oil prices. We witnessed political unrest in the Middle East, highlighted by instability in Iraq, and in Africa, the usually stable Nigeria also experienced violence. As a result, energy prices have bounced up and down, with crude oil prices at one point topping a record $70 per barrel. Such cycles are not uncommon and in fact have almost become the norm in our everyday lives. What does all of this mean to you as an investor? In times like these, it helps to know that you're working with a seasoned investment professional who has experience to guide you through difficult times. At MFS(R), we believe our investment management team has the knowledge and confidence to navigate through difficult cycles and at the same time see through adversity to find investment opportunities for our clients and shareholders. Our investment management process, honed over 80 years, combines a unique concept of teamwork with our unwavering focus on the long term. We firmly believe that the best way to realize long-term financial goals - be it a college education, a comfortable retirement, or a secure family legacy - is to follow a three-pronged approach that focuses on longer time horizons. Allocate holdings across the major asset classes - including stocks, bonds, and cash. Diversify within each class to take advantage of different market segments and investing styles. Rebalance assets regularly to maintain a desired asset allocation. Of course, these strategies cannot guarantee a profit or protect against a loss. This long-term approach requires diligence and patience, two traits that in our experience are essential to capitalizing on the many opportunities the financial markets can offer - through both up and down economic cycles. Respectfully, /s/ Robert J. Manning Robert J. Manning Chief Executive Officer and Chief Investment Officer MFS Investment Management(R) June 15, 2006 The opinions expressed in this letter are those of MFS, and no forecasts can be guaranteed. PORTFOLIO COMPOSITION MFS Lifetime Retirement Income Fund PORTFOLIO TARGET ALLOCATION U.S. Bond Funds 70.0% U.S. Stock Funds 20.0% Money Market Funds 10.0% PORTFOLIO ACTUAL ALLOCATION U.S. Bond Funds 70.8% U.S. Stock Funds 20.2% Money Market Funds 10.1% Cash & Other Net Assets -1.1% PORTFOLIO HOLDINGS MFS Limited Maturity Fund 20.2% ------------------------------------------------ MFS Intermediate Investment Grade Bond Fund 15.2% ------------------------------------------------ MFS Money Market Fund 10.1% ------------------------------------------------ MFS Inflation-Adjusted Bond Fund 10.1% ------------------------------------------------ MFS Government Securities Fund 10.1% ------------------------------------------------ MFS Floating Rate High Income Fund 10.1% ------------------------------------------------ MFS Value Fund 10.1% ------------------------------------------------ MFS Research Fund 10.1% ------------------------------------------------ MFS Research Bond Fund 5.1% ------------------------------------------------ Cash & Other Net Assets -1.1% ------------------------------------------------ MFS Lifetime 2010 Fund PORTFOLIO TARGET ALLOCATION U.S. Bond Funds 52.3% U.S. Stock Funds 33.3% Money Market Funds 10.0% International Stock Funds 4.4% PORTFOLIO ACTUAL ALLOCATION U.S. Bond Funds 52.5% U.S. Stock Funds 33.4% Money Market Funds 10.0% International Stock Funds 4.4% Cash & Other Net Assets -0.3% PORTFOLIO HOLDINGS MFS Limited Maturity Fund 20.1% ------------------------------------------------ MFS Intermediate Investment Grade Bond Fund 15.0% ------------------------------------------------ MFS Value Fund 14.5% ------------------------------------------------ MFS Research Fund 14.5% ------------------------------------------------ MFS Government Securities Fund 10.0% ------------------------------------------------ MFS Money Market Fund 10.0% ------------------------------------------------ MFS Research Bond Fund 5.0% ------------------------------------------------ MFS Strategic Growth Fund 4.4% ------------------------------------------------ MFS Research International Fund 4.4% ------------------------------------------------ MFS Floating Rate High Income Fund 1.2% ------------------------------------------------ MFS Inflation-Adjusted Bond Fund 1.2% ------------------------------------------------ Cash & Other Net Assets -0.3% ------------------------------------------------ MFS Lifetime 2020 Fund PORTFOLIO TARGET ALLOCATION U.S. Bond Funds 58.9% U.S. Stock Funds 21.7% International Stock Funds 18.8% Money Market Funds 0.6% PORTFOLIO ACTUAL ALLOCATION U.S. Bond Funds 58.9% U.S. Stock Funds 21.8% International Stock Funds 18.9% Money Market Funds 0.6% Cash & Other Net Assets -0.2% PORTFOLIO HOLDINGS MFS Value Fund 15.0% ------------------------------------------------ MFS Stategic Growth Fund 14.5% ------------------------------------------------ MFS Research International Fund 14.5% ------------------------------------------------ MFS Research Fund 10.6% ------------------------------------------------ MFS Research Bond Fund 10.0% ------------------------------------------------ MFS Mid Cap Growth Fund 9.4% ------------------------------------------------ MFS Mid Cap Value Fund 9.4% ------------------------------------------------ MFS Government Securities Fund 5.6% ------------------------------------------------ MFS High Income Fund 5.0% ------------------------------------------------ MFS International New Discovery Fund 4.4% ------------------------------------------------ MFS Intermediate Investment Grade Bond Fund 1.2% ------------------------------------------------ MFS Money Market Fund 0.6% ------------------------------------------------ Cash & Other Net Assets -0.2% ------------------------------------------------ PORTFOLIO COMPOSITION MFS Lifetime 2030 Fund PORTFOLIO TARGET ALLOCATION U.S. Stock Funds 78.9% International Stock Funds 20.0% U.S. Bond Funds 1.1% PORTFOLIO ACTUAL ALLOCATION U.S. Stock Funds 79.3% International Stock Funds 20.2% U.S. Bond Funds 1.2% Cash & Other Net Assets -0.7% PORTFOLIO HOLDINGS MFS Strategic Growth Fund 19.8% ------------------------------------------------ MFS Value Fund 15.1% ------------------------------------------------ MFS Mid Cap Growth Fund 14.8% ------------------------------------------------ MFS Mid Cap Value Fund 14.8% ------------------------------------------------ MFS Research International Fund 10.4% ------------------------------------------------ MFS Research Fund 10.1% ------------------------------------------------ MFS International New Discovery Fund 9.8% ------------------------------------------------ MFS New Discovery Fund 4.7% ------------------------------------------------ MFS Research Bond Fund 0.6% ------------------------------------------------ MFS Government Securities Fund 0.3% ------------------------------------------------ MFS High Income Fund 0.3% ------------------------------------------------ Cash & Other Net Assets -0.7% ------------------------------------------------ MFS Lifetime 2040 Fund PORTFOLIO TARGET ALLOCATION U.S. Stock Funds 80.0% International Stock Funds 20.0% PORTFOLIO ACTUAL ALLOCATION U.S. Stock Funds 80.6% International Stock Funds 20.2% Cash & Other Net Assets -0.8% PORTFOLIO HOLDINGS MFS Strategic Growth Fund 20.2% ------------------------------------------------ MFS Value Fund 15.1% ------------------------------------------------ MFS Mid Cap Growth Fund 15.1% ------------------------------------------------ MFS Mid Cap Value Fund 15.1% ------------------------------------------------ MFS International New Discovery Fund 10.1% ------------------------------------------------ MFS Research International Fund 10.1% ------------------------------------------------ MFS Research Fund 10.1% ------------------------------------------------ MFS New Discovery Fund 5.0% ------------------------------------------------ Cash & Other Net Assets -0.8% ------------------------------------------------ From time to time "Cash & Other Net Assets" may be negative due to timing of cash receipts. Percentages are based on net assets as of 4/30/06. The portfolios are actively managed, and current holdings may be different. MANAGEMENT REVIEW MFS LIFETIME RETIREMENT INCOME FUND SUMMARY OF RESULTS For the period ended April 30, 2006, Class A shares of the MFS Lifetime Retirement Income Fund provided a total return of 2.27%, at net asset value. In comparison, the fund's benchmark, the Lehman Brothers U.S. Aggregate Bond Index, returned -0.54%. The fund's other benchmark, a blended benchmark (MFS Lifetime Retirement Income Fund Custom Blend) comprised at period end of 70% Lehman Brothers U.S. Aggregate Bond Index, 20% Standard & Poor's 500 Stock Index, and 10% Lehman Brothers Three-Month Treasury Bill Index, returned 1.60%. CONTRIBUTORS TO PERFORMANCE During the period the fund benefited from its allocation to equity funds. The major contributors to performance relative to the blended benchmark over the period were our investments in large capitalization core and value funds. Our positions in the MFS Value Fund and MFS Research Fund led to positive relative results. Other funds that contributed to relative results included the MFS Floating Rate High Income Fund and the MFS Limited Maturity Fund, both of which outperformed the broad fixed income market, as measured by the Lehman Brothers U.S. Aggregate Bond Index, as interest rates rose during the period. DETRACTORS FROM PERFORMANCE The primary detractors from relative performance over the period were our allocations to fixed income funds, as equity markets outperformed fixed income and cash markets. Our positioning in the MFS Inflation-Adjusted Bond Fund, a longer duration(d) fund, hurt results as interest rates rose during the period. MFS LIFETIME 2010 FUND SUMMARY OF RESULTS For the period ended April 30, 2006, Class A shares of the MFS Lifetime 2010 Fund provided a total return of 4.67%, at net asset value. In comparison, the fund's benchmark, the Lehman Brothers U.S. Aggregate Bond Index, returned - -0.54%. The fund's other benchmark, a blended benchmark (MFS Lifetime Fund 2010 Custom Blend) comprised at period end of 52% Lehman Brothers U.S. Aggregate Bond Index, 33.5% Standard & Poor's 500 Stock Index, 4.5% MSCI EAFE Index, and 10% Lehman Brothers Three-Month Treasury Bill Index, returned 3.88%. CONTRIBUTORS TO PERFORMANCE During the period the fund benefited from its allocation to equity funds. The major contributors to performance relative to the blended benchmark over the period were our investments in large capitalization growth, value, core, and particularly international funds. Our positions in the MFS Strategic Growth Fund, MFS Value Fund, MFS Research Fund, and MFS Research International Fund led to positive relative results. Other funds that contributed to relative results included the MFS Floating Rate High Income Fund and the MFS Limited Maturity Fund, both of which outperformed the broad fixed income market, as measured by the Lehman Brothers U.S. Aggregate Bond Index, as interest rates rose during the period. DETRACTORS FROM PERFORMANCE The primary detractors from relative performance over the period were our allocations to fixed income funds, as equity markets outperformed fixed income and cash markets. Our positioning in the MFS Inflation-Adjusted Bond Fund, a longer duration fund, hurt results as interest rates rose during the period. MFS LIFETIME 2020 FUND SUMMARY OF RESULTS For the period ended April 30, 2006, Class A shares of the MFS Lifetime 2020 Fund provided a total return of 10.14%, at net asset value. In comparison, the fund's benchmark, the Standard & Poor's 500 Stock Index, returned 8.87%. The fund's other benchmark, a blended benchmark (MFS Lifetime Fund 2020 Custom Blend) comprised at period end of 59% Standard & Poor's 500 Stock Index, 19% MSCI EAFE Index, 21.5% Lehman Brothers U.S. Aggregate Bond Index, and 0.5% Lehman Brothers Three-Month Treasury Bill Index, returned 9.00%. CONTRIBUTORS TO PERFORMANCE During the period the fund benefited from its allocation to equity funds. The major contributors to performance relative to the blended benchmark over the period were our investments in international funds. Our positions in the MFS Research International Fund and the MFS International New Discovery Fund were the largest contributors to relative results. Performance of international funds was aided by the depreciation of the U.S. dollar relative to foreign currencies over the time period. Other equity funds that added to results included the MFS Value Fund, MFS Mid Cap Growth Fund, and the MFS Mid Cap Value Fund. Management review - continued DETRACTORS FROM PERFORMANCE The primary detractor from relative performance over the period was our positioning in fixed income funds that underperformed the broad equity markets. MFS LIFETIME 2030 FUND SUMMARY OF RESULTS For the period ended April 30, 2006, Class A shares of the MFS Lifetime 2030 Fund provided a total return of 12.73%, at net asset value. In comparison, the fund's benchmark, the Standard & Poor's 500 Stock Index, returned 8.87%. The fund's other benchmark, a blended benchmark (MFS Lifetime Fund 2030 Custom Blend) comprised at period end of 79% Standard & Poor's 500 Stock Index, 20% MSCI EAFE Index, and 1.00% Lehman Brothers U.S. Aggregate Bond Index, returned 11.08%. CONTRIBUTORS TO PERFORMANCE The major contributors to performance relative to the blended benchmark over the period were the fund's investments in international funds. The fund's allocations to MFS Research International Fund and MFS International New Discovery Fund bolstered relative results. Performance of international funds was aided by the depreciation of the U.S. dollar relative to foreign currencies over the time period. DETRACTORS FROM PERFORMANCE Detractors from relative performance included equity funds that underperformed their respective segments of the market. Although these funds had positive absolute returns, on a relative basis they held back performance. These funds included MFS Research Fund, MFS Mid Cap Value Fund, and MFS Strategic Growth Fund. MFS LIFETIME 2040 FUND SUMMARY OF RESULTS For the period ended April 30, 2006, Class A shares of the MFS Lifetime 2040 Fund provided a total return of 12.76%, at net asset value. In comparison, the fund's benchmark, the Standard & Poor's 500 Stock Index, returned 8.87%. The fund's other benchmark, a blended benchmark (MFS Lifetime Fund 2040 Custom Blend) comprised at period end of 80% Standard & Poor's 500 Stock Index and 20% MSCI EAFE Index, returned 11.14%. CONTRIBUTORS TO PERFORMANCE Major contributors to performance relative to the blended benchmark over the period were the fund's investments in international funds. The fund's allocations to MFS Research International Fund and MFS International New Discovery Fund were the largest contributors to relative results. Performance of international funds was aided by the depreciation of the U.S. dollar relative to foreign currencies over the time period. DETRACTORS FROM PERFORMANCE Detractors from relative performance included equity funds that underperformed their respective segments of the market. Although these funds had positive absolute returns, on a relative basis they held back performance. These funds included MFS Research Fund, MFS Mid Cap Value Fund, and MFS Strategic Growth Fund. Respectfully, Joseph C. Flaherty, Jr. Portfolio Manager (d) Duration is a measure of how much a bond's price is likely to fluctuate with general changes in interest rates, e.g., if rates rise 1.00%, a bond with a 5-year duration is likely to lose about 5.00% of its value. The views expressed in this report are those of the portfolio manager only through the end of the period of the report as stated on the cover and do not necessarily reflect the views of MFS or any other person in the MFS organization. These views are subject to change at any time based on market and other conditions, and MFS disclaims any responsibility to update such views. These views may not be relied upon as investment advice or an indication of trading intent on behalf of any MFS portfolio. References to specific securities are not recommendations of such securities, and may not be representative of any MFS portfolio's current or future investments. The portfolios are actively managed, and current holdings may be different. PERFORMANCE SUMMARY THROUGH 4/30/06 The following charts illustrate the historical performance of each fund's Class A shares in comparison to its benchmarks. Performance results include the deduction of the maximum applicable sales charge and reflect the percentage change in net asset value, including reinvestment of dividends and capital gains distributions. The performance of other share classes will be greater than or less than that of the class depicted below. Benchmark comparisons are unmanaged; do not reflect sales charges, commissions or expenses; and cannot be invested in directly. (See Notes to Performance Summary.) PERFORMANCE DATA SHOWN REPRESENTS PAST PERFORMANCE AND IS NO GUARANTEE OF FUTURE RESULTS. INVESTMENT RETURN AND PRINCIPAL VALUE FLUCTUATE SO YOUR SHARES, WHEN SOLD, MAY BE WORTH MORE OR LESS THAN THE ORIGINAL COST; CURRENT PERFORMANCE MAY BE LOWER OR HIGHER THAN QUOTED. FOR MOST RECENT MONTH-END PERFORMANCE, PLEASE VISIT MFS.COM. (FOR THE MOST RECENT MONTH-END PERFORMANCE FOR CLASS I SHARES CALL 1-888-808-6374.) THE PERFORMANCE SHOWN DOES NOT REFLECT THE DEDUCTION OF TAXES, IF ANY, THAT A SHAREHOLDER WOULD PAY ON FUND DISTRIBUTIONS OR THE REDEMPTION OF FUND SHARES. MFS LIFETIME RETIREMENT INCOME FUND GROWTH OF A HYPOTHETICAL $10,000 INVESTMENT MFS Lifetime Retirement Income Lehman Brothers MFS Lifetime Fund Custom U.S. Aggregate Retirement Income Blend Bond Index Fund -- Class A 9/05 $10,000 $10,000 $ 9,500 4/06 10,160 9,946 9,639 TOTAL RETURNS THROUGH 4/30/06 AVERAGE ANNUAL WITHOUT SALES CHARGE Share class Class inception date Life (t) - -------------------------------------------------------------------------- A 9/29/05 2.27% - -------------------------------------------------------------------------- B 9/29/05 1.88% - -------------------------------------------------------------------------- C 9/29/05 1.88% - -------------------------------------------------------------------------- I 9/29/05 2.48% - -------------------------------------------------------------------------- R1 9/29/05 1.82% - -------------------------------------------------------------------------- R2 9/29/05 2.03% - -------------------------------------------------------------------------- R3 9/29/05 2.09% - -------------------------------------------------------------------------- R4 9/29/05 2.24% - -------------------------------------------------------------------------- R5 9/29/05 2.42% - -------------------------------------------------------------------------- AVERAGE ANNUAL Comparative benchmarks - -------------------------------------------------------------------------- Lehman Brothers U.S. Aggregate Bond Index (f) -0.54% - -------------------------------------------------------------------------- MFS Lifetime Retirement Income Fund Custom Blend (f)* 1.60% - -------------------------------------------------------------------------- AVERAGE ANNUAL WITH SALES CHARGE Share class - -------------------------------------------------------------------------- A -3.61% With Initial Sales Charge (5.75%) - -------------------------------------------------------------------------- B -2.12% With CDSC (Declining over six years from 4% to 0%) - -------------------------------------------------------------------------- C 0.88% With CDSC (1% for 12 months) - -------------------------------------------------------------------------- Class I, R1, R2, R3, R4 and R5 shares do not have a sales charge. Please see Notes to Performance Summary for more details. CDSC - Contingent Deferred Sales Charge. (f) Source: FactSet Research Systems, Inc. (t) For the period from the commencement of the fund's investment operations, September 29, 2005 through the stated period end. * The weights of the components of the blended benchmark (MFS Income Fund Custom Blended Index) are 70% Lehman Brothers U.S. Aggregate Bond Index, 20% Standard & Poor's 500 Stock Index, and 10% Lehman Brothers Three-Month Treasury Bill Index. Performance Summary - continued MFS LIFETIME 2010 FUND GROWTH OF A HYPOTHETICAL $10,000 INVESTMENT MFS Lifetime Lehman Brothers MFS Lifetime Fund 2010 U.S. Aggregate 2010 Fund -- Custom Blend Bond Index Class A 9/05 $ 9,425 $10,000 $10,000 4/06 9,865 9,946 10,388 TOTAL RETURNS THROUGH 4/30/06 AVERAGE ANNUAL WITHOUT SALES CHARGE Share class Class inception date Life (t) - -------------------------------------------------------------------------- A 9/29/05 4.67% - -------------------------------------------------------------------------- B 9/29/05 4.32% - -------------------------------------------------------------------------- C 9/29/05 4.28% - -------------------------------------------------------------------------- I 9/29/05 4.94% - -------------------------------------------------------------------------- R1 9/29/05 4.26% - -------------------------------------------------------------------------- R2 9/29/05 4.45% - -------------------------------------------------------------------------- R3 9/29/05 4.47% - -------------------------------------------------------------------------- R4 9/29/05 4.71% - -------------------------------------------------------------------------- R5 9/29/05 4.81% - -------------------------------------------------------------------------- AVERAGE ANNUAL Comparative benchmarks - -------------------------------------------------------------------------- Lehman Brothers U.S. Aggregate Bond Index (f) -0.54% - -------------------------------------------------------------------------- MFS Lifetime Fund 2010 Custom Blend (f)* 3.88% - -------------------------------------------------------------------------- AVERAGE ANNUAL WITH SALES CHARGE Share class - -------------------------------------------------------------------------- A -1.35% With Initial Sales Charge (5.75%) - -------------------------------------------------------------------------- B 0.32% With CDSC (Declining over six years from 4% to 0%) - -------------------------------------------------------------------------- C 3.28% With CDSC (1% for 12 months) - -------------------------------------------------------------------------- Class I, R1, R2, R3, R4 and R5 shares do not have a sales charge. Please see Notes to Performance Summary for more details. CDSC - Contingent Deferred Sales Charge. (f) Source: FactSet Research Systems, Inc. (t) For the period from the commencement of the fund's investment operations, September 29, 2005 through the stated period end. * The weights of the components of the blended benchmark (MFS Fund 2010 Custom Blended Index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: 10/31/2005 4/30/2006 Lehman Brothers U.S. Aggregate Bond Index 50.00 52.00 Standard & Poor's 500 Stock Index 35.00 33.50 Lehman Brothers Three-Month Treasury Bill Index 10.00 10.00 MSCI EAFE Index 5.00 4.50 Performance Summary - continued MFS LIFETIME 2020 FUND GROWTH OF A HYPOTHETICAL $10,000 INVESTMENT MFS Lifetime Standard & MFS Lifetime Fund 2020 Poor's 500 2020 Fund -- Custom Blend Stock Index Class A 9/05 $ 9,425 $ 10,000 $10,000 4/06 10,380 10,887 10,900 TOTAL RETURNS THROUGH 4/30/06 AVERAGE ANNUAL WITHOUT SALES CHARGE Share class Class inception date Life (t) - -------------------------------------------------------------------------- A 9/29/05 10.14% - -------------------------------------------------------------------------- B 9/29/05 9.71% - -------------------------------------------------------------------------- C 9/29/05 9.79% - -------------------------------------------------------------------------- I 9/29/05 10.38% - -------------------------------------------------------------------------- R1 9/29/05 9.68% - -------------------------------------------------------------------------- R2 9/29/05 9.97% - -------------------------------------------------------------------------- R3 9/29/05 9.99% - -------------------------------------------------------------------------- R4 9/29/05 10.24% - -------------------------------------------------------------------------- R5 9/29/05 10.35% - -------------------------------------------------------------------------- AVERAGE ANNUAL Comparative benchmarks - -------------------------------------------------------------------------- Standard & Poor's 500 Stock Index (f) 8.87% - -------------------------------------------------------------------------- MFS Lifetime Fund 2020 Custom Blend (f)* 9.00% - -------------------------------------------------------------------------- AVERAGE ANNUAL WITH SALES CHARGE Share class - -------------------------------------------------------------------------- A 3.80% With Initial Sales Charge (5.75%) - -------------------------------------------------------------------------- B 5.71% With CDSC (Declining over six years from 4% to 0%) - -------------------------------------------------------------------------- C 8.79% With CDSC (1% for 12 months) - -------------------------------------------------------------------------- Class I, R1, R2, R3, R4 and R5 shares do not have a sales charge. Please see Notes to Performance Summary for more details. CDSC - Contingent Deferred Sales Charge. (f) Source: FactSet Research Systems, Inc. (t) For the period from the commencement of the fund's investment operations, September 29, 2005 through the stated period end. * The weights of the components of the blended benchmark (MFS Fund 2020 Custom Blended Index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: 10/31/2005 4/30/2006 Standard & Poor's 500 Stock Index 60.00 59.00 MSCI EAFE Index 20.00 19.00 Lehman Brothers U.S. Aggregate Bond Index 20.00 21.50 Lehman Brothers Three-Month Treasury Bill Index 0.00 0.50 Performance Summary - continued MFS LIFETIME 2030 FUND GROWTH OF A HYPOTHETICAL $10,000 INVESTMENT MFS Lifetime Standard & MFS Lifetime Fund 2030 Poor's 500 2030 Fund -- Custom Blend Stock Index Class A 9/05 $ 9,425 $10,000 $10,000 4/06 10,625 10,887 11,108 TOTAL RETURNS THROUGH 4/30/06 AVERAGE ANNUAL WITHOUT SALES CHARGE Share class Class inception date Life (t) - -------------------------------------------------------------------------- A 9/29/05 12.73% - -------------------------------------------------------------------------- B 9/29/05 12.36% - -------------------------------------------------------------------------- C 9/29/05 12.39% - -------------------------------------------------------------------------- I 9/29/05 12.99% - -------------------------------------------------------------------------- R1 9/29/05 12.29% - -------------------------------------------------------------------------- R2 9/29/05 12.49% - -------------------------------------------------------------------------- R3 9/29/05 12.56% - -------------------------------------------------------------------------- R4 9/29/05 12.72% - -------------------------------------------------------------------------- R5 9/29/05 12.97% - -------------------------------------------------------------------------- AVERAGE ANNUAL Comparative benchmarks - -------------------------------------------------------------------------- Standard & Poor's 500 Stock Index (f) 8.87% - -------------------------------------------------------------------------- MFS Lifetime Fund 2030 Custom Blend (f)* 11.08% - -------------------------------------------------------------------------- AVERAGE ANNUAL WITH SALES CHARGE Share class - -------------------------------------------------------------------------- A 6.25% With Initial Sales Charge (5.75%) - -------------------------------------------------------------------------- B 8.36% With CDSC (Declining over six years from 4% to 0%) - -------------------------------------------------------------------------- C 11.39% With CDSC (1% for 12 months) - -------------------------------------------------------------------------- Class I, R1, R2, R3, R4 and R5 shares do not have a sales charge. Please see Notes to Performance Summary for more details. CDSC - Contingent Deferred Sales Charge. (f) Source: FactSet Research Systems, Inc. (t) For the period from the commencement of the fund's investment operations, September 29, 2005 through the stated period end. * The weights of the components of the blended benchmark (MFS Fund 2030 Custom Blended Index) are designed to change systematically over time on a preset schedule. The table below depicts the individual component weights (in percent) at the beginning and at the end of the reporting period: 10/31/2005 4/30/2006 Standard & Poor's 500 Stock Index 80.00 79.00 MSCI EAFE Index 20.00 20.00 Lehman Brothers U.S. Aggregate Bond Index 0.00 1.00 Performance Summary - continued MFS LIFETIME 2040 FUND GROWTH OF A HYPOTHETICAL $10,000 INVESTMENT 2040 MFS Lifetime Standard & MFS Lifetime Fund 2040 Poor's 500 2040 Fund -- Custom Blend Stock Index Class A 9/05 $ 9,425 $10,000 $10,000 4/06 10,628 10,887 11,114 TOTAL RETURNS THROUGH 4/30/06 AVERAGE ANNUAL WITHOUT SALES CHARGE Share class Class inception date Life (t) - -------------------------------------------------------------------------- A 9/29/05 12.76% - -------------------------------------------------------------------------- B 9/29/05 12.45% - -------------------------------------------------------------------------- C 9/29/05 12.38% - -------------------------------------------------------------------------- I 9/29/05 13.01% - -------------------------------------------------------------------------- R1 9/29/05 12.31% - -------------------------------------------------------------------------- R2 9/29/05 12.61% - -------------------------------------------------------------------------- R3 9/29/05 12.70% - -------------------------------------------------------------------------- R4 9/29/05 12.84% - -------------------------------------------------------------------------- R5 9/29/05 12.99% - -------------------------------------------------------------------------- AVERAGE ANNUAL Comparative benchmarks - -------------------------------------------------------------------------- Standard & Poor's 500 Stock Index (f) 8.87% - -------------------------------------------------------------------------- MFS Lifetime Fund 2040 Custom Blend (f)* 11.14% - -------------------------------------------------------------------------- AVERAGE ANNUAL WITH SALES CHARGE Share class - -------------------------------------------------------------------------- A 6.28% With Initial Sales Charge (5.75%) - -------------------------------------------------------------------------- B 8.45% With CDSC (Declining over six years from 4% to 0%) - -------------------------------------------------------------------------- C 11.38% With CDSC (1% for 12 months) - -------------------------------------------------------------------------- Class I, R1, R2, R3, R4 and R5 shares do not have a sales charge. Please see Notes to Performance Summary for more details. CDSC - Contingent Deferred Sales Charge. (f) Source: FactSet Research Systems, Inc. (t) For the period from the commencement of the fund's investment operations, September 29, 2005 through the stated period end. * The weights of the components of the blended benchmark (MFS Fund 2040 Custom Blended Index) are 80% Standard & Poor's 500 Stock Index and 20% MSCI EAFE Index. Performance Summary - continued INDEX DEFINITIONS Lehman Brothers Three-Month Treasury Bill Index - derived from secondary market Treasury bill rates published by the Federal Reserve Bank. Lehman Brothers U.S. Aggregate Bond Index - measures the U.S. investment grade, fixed rate bond market, with index components for government and corporate securities, mortgage pass-through securities, and asset-backed securities. MSCI EAFE (Europe, Australasia, Far East) Index - a market capitalization index that is designed to measure developed market equity performance, excluding the U.S. & Canada. Standard & Poor's 500 Stock Index - a capitalization-weighted index of 500 widely held equity securities, designed to measure broad U.S. equity performance. It is not possible to invest directly in an index. NOTES TO PERFORMANCE SUMMARY Class I shares are only available to certain eligible investors, and Class R1, R2, R3, R4, and R5 shares are only available to certain retirement plans. Performance results reflect any applicable expense subsidies and waivers in effect during the periods shown. Without such subsidies and waivers the fund's performance results would be less favorable. Please see the prospectus and financial statements for complete details. KEY RISK CONSIDERATIONS Each portfolio is a "portfolio of portfolios", meaning that the portfolio seeks to achieve its objective by investing the majority of its assets in other MFS mutual portfolios, referred to as underlying portfolios. The risks listed below are associated with the underlying portfolios. Stock markets are volatile and can decline due to adverse issuer, political, regulatory or economic conditions. The value of the portfolio's equity investments will fluctuate in response to many factors including company specific factors as well as general market conditions. Foreign investments can be more volatile than U.S. investments. Investing in emerging markets can involve risks in addition to those generally associated with investing in more developed foreign markets. The portfolio's yield and share prices change daily based on the credit quality of its investments and changes in interest rates. In general, the value of debt securities will decline when interest rates rise and will increase when interest rates fall. Debt securities with longer maturity dates will be subject to greater price fluctuations than those with shorter maturities. Derivatives involve risks different from, and greater than, those of the underlying indicator's in whose value the derivative is based. The value of the derivative can move in unexpected ways and result in unanticipated losses and increased volatility if the value of the underlying indicator(s) does not move in the direction or the extent anticipated. Lower quality debt securities involve substantially greater risk of default and their value can decline significantly over time. When you sell your shares, they may be worth more or less than the amount you paid for them. Please see the prospectus for further information regarding these and other risk considerations. EXPENSE TABLES FUND EXPENSES BORNE BY THE SHAREHOLDERS DURING THE PERIOD, NOVEMBER 1, 2005 THROUGH APRIL 30, 2006. As a shareholder of the funds, you incur two types of costs: (1) transaction costs, including sales charges (loads) on certain purchase or redemption payments and redemption fees on certain exchanges and redemptions, and (2) ongoing costs, including management fees; distribution and service (12b-1) fees; and other fund expenses. These examples are intended to help you understand your ongoing costs (in dollars) of investing in the funds and to compare these costs with the ongoing costs of investing in other mutual funds. The examples are based on an investment of $1,000 invested at the beginning of the period and held for the entire period November 1, 2005 through April 30, 2006. ACTUAL EXPENSES The first line for each share class in the following tables provides information about actual account values and actual expenses. You may use the information in this line, together with the amount you invested, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number in the first line under the heading entitled "Expenses Paid During Period" to estimate the expenses you paid on your account during this period. HYPOTHETICAL EXAMPLE FOR COMPARISON PURPOSES The second line for each share class in the following tables provides information about hypothetical account values and hypothetical expenses based on each fund's actual expense ratio and an assumed rate of return of 5% per year before expenses, which is not each fund's actual return. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period. You may use this information to compare the ongoing costs of investing in each fund and other funds. To do so, compare this 5% hypothetical example with the 5% hypothetical examples that appear in the shareholder reports of the other funds. Please note that the expenses shown in the tables are meant to highlight your ongoing costs only and do not reflect any transactional costs, such as sales charges (loads) or redemption fees. Therefore, the second line for each share class in the tables is useful in comparing ongoing costs only, and will not help you determine the relative total costs of owning different funds. In addition, if these transactional costs were included, your costs would have been higher. In addition to the fees and expenses which each fund bears directly, each fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which each fund invests. Because the underlying funds have varied expenses and fee levels and each fund may own different proportions of the underlying funds at different times, the amount of fees and expenses incurred indirectly by each fund will vary. If these transactional and indirect costs were included, your costs would have been higher. Expense Tables - continued MFS LIFETIME RETIREMENT INCOME FUND - ------------------------------------------------------------------------------- Expenses Paid During Annualized Beginning Ending Period(p) Share Expense Account Value Account Value 11/01/05- Class Ratio 11/01/05 4/30/06 4/30/06 - -------------------------------------------------------------------------------- Actual 0.45% $1,000.00 $1,027.40 $2.26 A ------------------------------------------------------------------------ Hypothetical (h) 0.45% $1,000.00 $1,022.56 $2.26 - -------------------------------------------------------------------------------- Actual 1.10% $1,000.00 $1,024.10 $5.52 B ------------------------------------------------------------------------- Hypothetical (h) 1.10% $1,000.00 $1,019.34 $5.51 - -------------------------------------------------------------------------------- Actual 1.10% $1,000.00 $1,024.10 $5.52 C ------------------------------------------------------------------------ Hypothetical (h) 1.10% $1,000.00 $1,019.34 $5.51 - -------------------------------------------------------------------------------- Actual 0.10% $1,000.00 $1,029.20 $0.50 I ------------------------------------------------------------------------ Hypothetical (h) 0.10% $1,000.00 $1,024.30 $0.50 - -------------------------------------------------------------------------------- Actual 1.20% $1,000.00 $1,023.60 $6.02 R1 ------------------------------------------------------------------------ Hypothetical (h) 1.20% $1,000.00 $1,018.84 $6.01 - -------------------------------------------------------------------------------- Actual 0.85% $1,000.00 $1,025.40 $4.27 R2 ------------------------------------------------------------------------ Hypothetical (h) 0.85% $1,000.00 $1,020.58 $4.26 - -------------------------------------------------------------------------------- Actual 0.75% $1,000.00 $1,025.90 $3.77 R3 ------------------------------------------------------------------------ Hypothetical (h) 0.75% $1,000.00 $1,021.08 $3.76 - -------------------------------------------------------------------------------- Actual 0.50% $1,000.00 $1,027.20 $2.51 R4 ------------------------------------------------------------------------ Hypothetical (h) 0.50% $1,000.00 $1,022.32 $2.51 - -------------------------------------------------------------------------------- Actual 0.20% $1,000.00 $1,028.70 $1.01 R5 ------------------------------------------------------------------------ Hypothetical (h) 0.20% $1,000.00 $1,023.80 $1.00 - -------------------------------------------------------------------------------- MFS LIFETIME 2010 FUND - ------------------------------------------------------------------------------- Expenses Paid During Annualized Beginning Ending Period(p) Share Expense Account Value Account Value 11/01/05- Class Ratio 11/01/05 4/30/06 4/30/06 - -------------------------------------------------------------------------------- Actual 0.45% $1,000.00 $1,050.90 $2.29 A ------------------------------------------------------------------------ Hypothetical (h) 0.45% $1,000.00 $1,022.56 $2.26 - -------------------------------------------------------------------------------- Actual 1.10% $1,000.00 $1,048.40 $5.59 B ------------------------------------------------------------------------- Hypothetical (h) 1.10% $1,000.00 $1,019.34 $5.51 - -------------------------------------------------------------------------------- Actual 1.10% $1,000.00 $1,048.10 $5.59 C ------------------------------------------------------------------------ Hypothetical (h) 1.10% $1,000.00 $1,019.34 $5.51 - -------------------------------------------------------------------------------- Actual 0.10% $1,000.00 $1,053.60 $0.51 I ------------------------------------------------------------------------ Hypothetical (h) 0.10% $1,000.00 $1,024.30 $0.50 - -------------------------------------------------------------------------------- Actual 1.20% $1,000.00 $1,047.80 $6.09 R1 ------------------------------------------------------------------------ Hypothetical (h) 1.20% $1,000.00 $1,018.84 $6.01 - -------------------------------------------------------------------------------- Actual 0.85% $1,000.00 $1,049.70 $4.32 R2 ------------------------------------------------------------------------ Hypothetical (h) 0.85% $1,000.00 $1,020.58 $4.26 - -------------------------------------------------------------------------------- Actual 0.75% $1,000.00 $1,050.00 $3.81 R3 ------------------------------------------------------------------------ Hypothetical (h) 0.75% $1,000.00 $1,021.08 $3.76 - -------------------------------------------------------------------------------- Actual 0.50% $1,000.00 $1,051.30 $2.54 R4 ------------------------------------------------------------------------ Hypothetical (h) 0.50% $1,000.00 $1,022.32 $2.51 - -------------------------------------------------------------------------------- Actual 0.20% $1,000.00 $1,052.30 $1.02 R5 ------------------------------------------------------------------------ Hypothetical (h) 0.20% $1,000.00 $1,023.80 $1.00 - -------------------------------------------------------------------------------- Expense Tables - continued MFS LIFETIME 2020 FUND - ------------------------------------------------------------------------------- Expenses Paid During Annualized Beginning Ending Period(p) Share Expense Account Value Account Value 11/01/05- Class Ratio 11/01/05 4/30/06 4/30/06 - -------------------------------------------------------------------------------- Actual 0.45% $1,000.00 $1,111.40 $2.36 A ------------------------------------------------------------------------ Hypothetical (h) 0.45% $1,000.00 $1,022.56 $2.26 - -------------------------------------------------------------------------------- Actual 1.10% $1,000.00 $1,107.10 $5.75 B ------------------------------------------------------------------------- Hypothetical (h) 1.10% $1,000.00 $1,019.34 $5.51 - -------------------------------------------------------------------------------- Actual 1.10% $1,000.00 $1,107.90 $5.75 C ------------------------------------------------------------------------ Hypothetical (h) 1.10% $1,000.00 $1,019.34 $5.51 - -------------------------------------------------------------------------------- Actual 0.10% $1,000.00 $1,112.70 $0.52 I ------------------------------------------------------------------------ Hypothetical (h) 0.10% $1,000.00 $1,024.30 $0.50 - -------------------------------------------------------------------------------- Actual 1.20% $1,000.00 $1,106.80 $6.27 R1 ------------------------------------------------------------------------ Hypothetical (h) 1.20% $1,000.00 $1,018.84 $6.01 - -------------------------------------------------------------------------------- Actual 0.85% $1,000.00 $1,109.70 $4.45 R2 ------------------------------------------------------------------------ Hypothetical (h) 0.85% $1,000.00 $1,020.58 $4.26 - -------------------------------------------------------------------------------- Actual 0.75% $1,000.00 $1,109.90 $3.92 R3 ------------------------------------------------------------------------ Hypothetical (h) 0.75% $1,000.00 $1,021.08 $3.76 - -------------------------------------------------------------------------------- Actual 0.50% $1,000.00 $1,112.50 $2.62 R4 ------------------------------------------------------------------------ Hypothetical (h) 0.50% $1,000.00 $1,022.32 $2.51 - -------------------------------------------------------------------------------- Actual 0.20% $1,000.00 $1,112.40 $1.05 R5 ------------------------------------------------------------------------ Hypothetical (h) 0.20% $1,000.00 $1,023.80 $1.00 - -------------------------------------------------------------------------------- MFS LIFETIME 2030 FUND - ------------------------------------------------------------------------------- Expenses Paid During Annualized Beginning Ending Period(p) Share Expense Account Value Account Value 11/01/05- Class Ratio 11/01/05 4/30/06 4/30/06 - -------------------------------------------------------------------------------- Actual 0.45% $1,000.00 $1,136.40 $2.38 A ------------------------------------------------------------------------ Hypothetical (h) 0.45% $1,000.00 $1,022.56 $2.26 - -------------------------------------------------------------------------------- Actual 1.10% $1,000.00 $1,133.80 $5.82 B ------------------------------------------------------------------------- Hypothetical (h) 1.10% $1,000.00 $1,019.34 $5.51 - -------------------------------------------------------------------------------- Actual 1.10% $1,000.00 $1,134.10 $5.82 C ------------------------------------------------------------------------ Hypothetical (h) 1.10% $1,000.00 $1,019.34 $5.51 - -------------------------------------------------------------------------------- Actual 0.10% $1,000.00 $1,139.00 $0.53 I ------------------------------------------------------------------------ Hypothetical (h) 0.10% $1,000.00 $1,024.30 $0.50 - -------------------------------------------------------------------------------- Actual 1.20% $1,000.00 $1,133.10 $6.35 R1 ------------------------------------------------------------------------ Hypothetical (h) 1.20% $1,000.00 $1,018.84 $6.01 - -------------------------------------------------------------------------------- Actual 0.85% $1,000.00 $1,133.90 $4.50 R2 ------------------------------------------------------------------------ Hypothetical (h) 0.85% $1,000.00 $1,020.58 $4.26 - -------------------------------------------------------------------------------- Actual 0.75% $1,000.00 $1,134.70 $3.97 R3 ------------------------------------------------------------------------ Hypothetical (h) 0.75% $1,000.00 $1,021.08 $3.76 - -------------------------------------------------------------------------------- Actual 0.50% $1,000.00 $1,136.30 $2.65 R4 ------------------------------------------------------------------------ Hypothetical (h) 0.50% $1,000.00 $1,022.32 $2.51 - -------------------------------------------------------------------------------- Actual 0.20% $1,000.00 $1,138.80 $1.06 R5 ------------------------------------------------------------------------ Hypothetical (h) 0.20% $1,000.00 $1,023.80 $1.00 - -------------------------------------------------------------------------------- Expense Tables - continued MFS LIFETIME 2040 FUND - ------------------------------------------------------------------------------- Expenses Paid During Annualized Beginning Ending Period(p) Share Expense Account Value Account Value 11/01/05- Class Ratio 11/01/05 4/30/06 4/30/06 - -------------------------------------------------------------------------------- Actual 0.45% $1,000.00 $1,136.70 $2.38 A ------------------------------------------------------------------------ Hypothetical (h) 0.45% $1,000.00 $1,022.56 $2.26 - -------------------------------------------------------------------------------- Actual 1.10% $1,000.00 $1,134.70 $5.82 B ------------------------------------------------------------------------- Hypothetical (h) 1.10% $1,000.00 $1,019.34 $5.51 - -------------------------------------------------------------------------------- Actual 1.10% $1,000.00 $1,134.00 $5.82 C ------------------------------------------------------------------------ Hypothetical (h) 1.10% $1,000.00 $1,019.34 $5.51 - -------------------------------------------------------------------------------- Actual 0.10% $1,000.00 $1,139.30 $0.53 I ------------------------------------------------------------------------ Hypothetical (h) 0.10% $1,000.00 $1,024.30 $0.50 - -------------------------------------------------------------------------------- Actual 1.20% $1,000.00 $1,133.30 $6.35 R1 ------------------------------------------------------------------------ Hypothetical (h) 1.20% $1,000.00 $1,018.84 $6.01 - -------------------------------------------------------------------------------- Actual 0.85% $1,000.00 $1,135.20 $4.50 R2 ------------------------------------------------------------------------ Hypothetical (h) 0.85% $1,000.00 $1,020.58 $4.26 - -------------------------------------------------------------------------------- Actual 0.75% $1,000.00 $1,136.10 $3.97 R3 ------------------------------------------------------------------------ Hypothetical (h) 0.75% $1,000.00 $1,021.08 $3.76 - -------------------------------------------------------------------------------- Actual 0.50% $1,000.00 $1,137.50 $2.65 R4 ------------------------------------------------------------------------ Hypothetical (h) 0.50% $1,000.00 $1,022.32 $2.51 - -------------------------------------------------------------------------------- Actual 0.20% $1,000.00 $1,139.00 $1.06 R5 ------------------------------------------------------------------------ Hypothetical (h) 0.20% $1,000.00 $1,023.80 $1.00 - -------------------------------------------------------------------------------- (h) 5% class return per year before expenses. (p) Expenses paid is equal to each class' annualized expense ratio, as shown above, multiplied by the average account value over the period, multiplied by the number of days in the period, divided by the number of days in the year. Expenses paid do not include any applicable sales charges (loads) or redemption fees. If these transaction costs had been included, your costs would have been higher. PORTFOLIO OF INVESTMENTS - 4/30/06 MFS(R) LIFETIME RETIREMENT INCOME FUND The Portfolio of Investments is a complete list of all securities owned by your fund. Mutual Funds - 101.1% - ------------------------------------------------------------------------------------------------------------------------------- ISSUER SHARES/PAR VALUE ($) - ------------------------------------------------------------------------------------------------------------------------------- MFS Floating Rate High Income Fund - Class I 20,431 $ 206,558 MFS Government Securities Fund - Class I 22,259 206,786 MFS Inflation-Adjusted Bond Fund - Class I 21,787 207,409 MFS Intermediate Investment Grade Bond Fund - Class I 31,832 310,047 MFS Limited Maturity Fund - Class I 64,990 413,336 MFS Money Market Fund 206,561 206,561 MFS Research Bond Fund - Class I 10,473 103,364 MFS Research Fund - Class I 8,910 206,530 MFS Value Fund - Class I 8,223 206,798 - ------------------------------------------------------------------------------------------------------------------------------- TOTAL MUTUAL FUNDS (IDENTIFIED COST, $2,067,347) $2,067,389 - ------------------------------------------------------------------------------------------------------------------------------- Short-Term Obligations - 2.1% - ------------------------------------------------------------------------------------------------------------------------------- UBS Finance Delaware LLC, 4.82%, due 5/01/06, at Amortized Cost and Value (y) $ 43,000 $ 43,000 - ------------------------------------------------------------------------------------------------------------------------------- TOTAL INVESTMENTS (IDENTIFIED COST, $2,110,347) $2,110,389 - ------------------------------------------------------------------------------------------------------------------------------- Other Assets, Less Liabilities - (3.2)% (65,753) - ------------------------------------------------------------------------------------------------------------------------------- NET ASSETS - 100.0% $2,044,636 - ------------------------------------------------------------------------------------------------------------------------------- PORTFOLIO OF INVESTMENTS - 4/30/06 MFS(R) LIFETIME 2010 FUND Mutual Funds - 100.3% - ------------------------------------------------------------------------------------------------------------------------------- ISSUER SHARES/PAR VALUE ($) - ------------------------------------------------------------------------------------------------------------------------------- MFS Floating Rate High Income Fund - Class I 2,310 $ 23,354 MFS Government Securities Fund - Class I 21,653 201,157 MFS Inflation-Adjusted Bond Fund - Class I 2,453 23,355 MFS Intermediate Investment Grade Bond Fund - Class I 30,979 301,736 MFS Limited Maturity Fund - Class I 63,257 402,315 MFS Money Market Fund 201,158 201,158 MFS Research Bond Fund - Class I 10,191 100,579 MFS Research Fund - Class I 12,513 290,059 MFS Research International Fund - Class I 4,445 88,901 MFS Strategic Growth Fund - Class I (n) 4,305 88,901 MFS Value Fund - Class I 11,533 290,060 - ------------------------------------------------------------------------------------------------------------------------------- TOTAL MUTUAL FUNDS (IDENTIFIED COST, $1,989,911) $2,011,575 - ------------------------------------------------------------------------------------------------------------------------------- Short-Term Obligations - 8.5% (y) - ------------------------------------------------------------------------------------------------------------------------------- General Electric Capital Corp., 4.82%, due 5/01/06 $ 14,000 $ 14,000 New Center Asset Trust, 4.82%, due 5/01/06 78,000 78,000 UBS Finance Delaware LLC, 4.82%, due 5/01/06 78,000 78,000 - ------------------------------------------------------------------------------------------------------------------------------- TOTAL SHORT-TERM OBLIGATIONS, AT AMORTIZED COST AND VALUE $ 170,000 - ------------------------------------------------------------------------------------------------------------------------------- TOTAL INVESTMENTS (IDENTIFIED COST, $2,159,911) $2,181,575 - ------------------------------------------------------------------------------------------------------------------------------- Other Assets, Less Liabilities - (8.8)% (177,285) - ------------------------------------------------------------------------------------------------------------------------------- NET ASSETS - 100.0% $2,004,290 - ------------------------------------------------------------------------------------------------------------------------------- SEE PORTFOLIO FOOTNOTES AND NOTES TO FINANCIAL STATEMENTS PORTFOLIO OF INVESTMENTS - 4/30/06 MFS(R) LIFETIME 2020 FUND Mutual Funds - 100.2% - ------------------------------------------------------------------------------------------------------------------------------- ISSUER SHARES/PAR VALUE ($) - ------------------------------------------------------------------------------------------------------------------------------- MFS Government Securities Fund - Class I 45,982 $ 427,177 MFS High Income Fund - Class I 99,932 382,740 MFS Intermediate Investment Grade Bond Fund - Class I 9,125 88,873 MFS International New Discovery Fund - Class I 12,065 338,304 MFS Mid Cap Growth Fund - Class I (n) 72,686 721,044 MFS Mid Cap Value Fund - Class I 50,921 721,044 MFS Money Market Fund 44,438 44,438 MFS Research Bond Fund - Class I 77,557 765,483 MFS Research Fund - Class I 34,940 809,917 MFS Research International Fund - Class I 55,190 1,103,790 MFS Strategic Growth Fund - Class I (n) 53,452 1,103,784 MFS Value Fund - Class I 45,655 1,148,221 - ------------------------------------------------------------------------------------------------------------------------------- TOTAL MUTUAL FUNDS (IDENTIFIED COST, $7,444,689) $7,654,815 - ------------------------------------------------------------------------------------------------------------------------------- Short-Term Obligations - 1.0% - ------------------------------------------------------------------------------------------------------------------------------- UBS Finance Delaware LLC, 4.82%, due 5/01/06, at Amortized Cost and Value (y) $ 78,000 $ 78,000 - ------------------------------------------------------------------------------------------------------------------------------- TOTAL INVESTMENTS (IDENTIFIED COST, $7,522,689) $7,732,815 - ------------------------------------------------------------------------------------------------------------------------------- Other Assets, Less Liabilities - (1.2)% (94,314) - ------------------------------------------------------------------------------------------------------------------------------- NET ASSETS - 100.0% $7,638,501 - ------------------------------------------------------------------------------------------------------------------------------- PORTFOLIO OF INVESTMENTS - 4/30/06 MFS(R) LIFETIME 2030 FUND Mutual Funds - 100.7% - ------------------------------------------------------------------------------------------------------------------------------- ISSUER SHARES/PAR VALUE ($) - ------------------------------------------------------------------------------------------------------------------------------- MFS Government Securities Fund - Class I 941 $ 8,742 MFS High Income Fund - Class I 2,282 8,742 MFS International New Discovery Fund - Class I 10,432 292,500 MFS Mid Cap Growth Fund - Class I (n) 44,674 443,162 MFS Mid Cap Value Fund - Class I 31,297 443,160 MFS New Discovery Fund - Class I (n) 7,193 142,136 MFS Research Bond Fund - Class I 1,771 17,483 MFS Research Fund - Class I 12,997 301,276 MFS Research International Fund - Class I 15,499 309,989 MFS Strategic Growth Fund - Class I (n) 28,752 593,737 MFS Value Fund - Class I 17,969 451,909 - ------------------------------------------------------------------------------------------------------------------------------- TOTAL MUTUAL FUNDS (IDENTIFIED COST, $2,899,249) $3,012,836 - ------------------------------------------------------------------------------------------------------------------------------- Short-Term Obligations - 2.0% - ------------------------------------------------------------------------------------------------------------------------------- UBS Finance Delaware LLC, 4.82%, due 5/01/06, at Amortized Cost and Value (y) $ 61,000 $ 61,000 - ------------------------------------------------------------------------------------------------------------------------------- TOTAL INVESTMENTS (IDENTIFIED COST, $2,960,249) $3,073,836 - ------------------------------------------------------------------------------------------------------------------------------- Other Assets, Less Liabilities - (2.7)% (81,152) - ------------------------------------------------------------------------------------------------------------------------------- NET ASSETS - 100.0% $2,992,684 - ------------------------------------------------------------------------------------------------------------------------------- SEE PORTFOLIO FOOTNOTES AND NOTES TO FINANCIAL STATEMENTS PORTFOLIO OF INVESTMENTS - 4/30/06 MFS(R) LIFETIME 2040 FUND Mutual Funds - 100.8% - ------------------------------------------------------------------------------------------------------------------------------- ISSUER SHARES/PAR VALUE ($) - ------------------------------------------------------------------------------------------------------------------------------- MFS International New Discovery Fund - Class I 8,861 $ 248,462 MFS Mid Cap Growth Fund - Class I (n) 37,570 372,693 MFS Mid Cap Value Fund - Class I 26,320 372,693 MFS New Discovery Fund - Class I (n) 6,287 124,231 MFS Research Fund - Class I 10,719 248,462 MFS Research International Fund - Class I 12,423 248,462 MFS Strategic Growth Fund - Class I (n) 24,064 496,926 MFS Value Fund - Class I 14,819 372,708 - ------------------------------------------------------------------------------------------------------------------------------- TOTAL MUTUAL FUNDS (IDENTIFIED COST, $2,362,314) $2,484,637 - ------------------------------------------------------------------------------------------------------------------------------- Short-Term Obligations - 2.6% - ------------------------------------------------------------------------------------------------------------------------------- UBS Finance Delaware LLC, 4.82%, due 5/01/06, at Amortized Cost and Value (y) $ 63,000 $ 63,000 - ------------------------------------------------------------------------------------------------------------------------------- TOTAL INVESTMENTS (IDENTIFIED COST, $2,425,314) $2,547,637 - ------------------------------------------------------------------------------------------------------------------------------- Other Assets, Less Liabilities - (3.4)% (82,697) - ------------------------------------------------------------------------------------------------------------------------------- NET ASSETS - 100.0% $2,464,940 - ------------------------------------------------------------------------------------------------------------------------------- PORTFOLIO FOOTNOTES: (n) Non-income producing security. (y) The rate shown represents an annualized yield at time of purchase. SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS STATEMENTS OF ASSETS AND LIABILITIES This statement represents your fund's balance sheet, which details the assets and liabilities comprising the total value of the fund. MFS LIFETIME MFS MFS MFS MFS RETIREMENT LIFETIME LIFETIME LIFETIME LIFETIME AT 4/30/06 INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND ASSETS - ----------------------------------------------------------------------------------------------------------------------------------- Investments, at value (identified cost, $2,110,347, $2,159,911, $7,522,689, $2,960,249 and $2,425,314, respectively) $2,110,389 $2,181,575 $7,732,815 $3,073,836 $2,547,637 Cash 777 719 747 347 204 Receivable for investments sold 2,101 -- -- 3,583 -- Receivable for fund shares sold 1,621 31,850 290,037 13,010 28,796 Dividends receivable 6,203 4,275 6,564 137 -- - ----------------------------------------------------------------------------------------------------------------------------------- Total assets $2,121,091 $2,218,419 $8,030,163 $3,090,913 $2,576,637 - ----------------------------------------------------------------------------------------------------------------------------------- LIABILITIES - ----------------------------------------------------------------------------------------------------------------------------------- Distributions payable $617 $-- $-- $-- $-- Payable for investments purchased 7,668 147,372 326,358 30,687 44,418 Payable for fund shares reacquired -- -- -- -- 371 Payable to affiliates Investment adviser 30,745 26,801 22,802 27,989 28,892 Shareholder servicing costs 34 53 128 74 70 Distribution and service fees 108 68 291 108 93 Administrative services fee 144 144 144 144 144 Retirement plan administration and services fees 14 16 51 20 12 Payable for independent trustees' compensation 206 355 300 182 206 Accrued expenses and other liabilities 36,919 39,320 41,588 39,025 37,491 - ------------------------------------------------------------------------------------------------------------------------------------ Total liabilities $76,455 $214,129 $391,662 $98,229 $111,697 - ------------------------------------------------------------------------------------------------------------------------------------ Net assets $2,044,636 $2,004,290 $7,638,501 $2,992,684 $2,464,940 - ------------------------------------------------------------------------------------------------------------------------------------ NET ASSETS CONSIST OF - ------------------------------------------------------------------------------------------------------------------------------------ Paid-in capital $2,043,243 $1,962,670 $7,377,215 $2,864,519 $2,338,081 Unrealized appreciation (depreciation) on investments 42 21,664 210,126 113,587 122,323 Accumulated net realized gain (loss) on investments 1,002 6,527 38,412 14,578 4,536 Undistributed net investment income 349 13,429 12,748 -- -- - ------------------------------------------------------------------------------------------------------------------------------------ Net assets $2,044,636 $2,004,290 $7,638,501 $2,992,684 $2,464,940 - ------------------------------------------------------------------------------------------------------------------------------------ Net assets Class A $723,677 $467,879 $2,718,238 $686,219 $599,113 Class B 367,363 137,690 1,009,030 381,790 466,069 Class C 378,735 95,719 142,582 114,090 86,066 Class I 51,236 264,441 324,136 700,945 581,555 Class R1 127,277 85,521 548,807 305,875 127,003 Class R2 51,014 90,277 89,710 62,081 56,280 Class R3 240,860 260,854 1,270,621 330,961 323,018 Class R4 53,266 549,488 1,480,197 354,251 169,342 Class R5 51,208 52,421 55,180 56,472 56,494 - ------------------------------------------------------------------------------------------------------------------------------------ Total net assets $2,044,636 $2,004,290 $7,638,501 $2,992,684 $2,464,940 - ------------------------------------------------------------------------------------------------------------------------------------ Statements of Assets and Liabilities - continued MFS LIFETIME MFS MFS MFS MFS RETIREMENT LIFETIME LIFETIME LIFETIME LIFETIME AT 4/30/06 INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND Shares of beneficial interest outstanding Class A 72,358 45,028 250,487 61,797 53,956 Class B 36,733 13,278 93,240 34,479 42,074 Class C 37,860 9,229 13,168 10,298 7,767 Class I 5,124 25,406 29,811 63,017 52,285 Class R1 12,731 8,249 50,673 27,599 11,459 Class R2 5,102 8,696 8,270 5,596 5,072 Class R3 24,075 25,126 117,188 29,846 29,112 Class R4 5,327 52,901 136,340 31,907 15,247 Class R5 5,121 5,039 5,076 5,079 5,080 - ----------------------------------------------------------------------------------------------------------------------------------- Total shares of beneficial interest outstanding 204,431 192,952 704,253 269,618 222,052 - ----------------------------------------------------------------------------------------------------------------------------------- Class A shares - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value per share (net assets/shares of beneficial interest outstanding) $10.00 $10.39 $10.85 $11.10 $11.10 - ----------------------------------------------------------------------------------------------------------------------------------- Offering price per share (100/94.25Xnet asset value per share) $10.61 $11.02 $11.51 $11.78 $11.78 - ----------------------------------------------------------------------------------------------------------------------------------- Class B shares - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value and offering price per share (net assets/shares of beneficial interest outstanding) $10.00 $10.37 $10.82 $11.07 $11.08 - ----------------------------------------------------------------------------------------------------------------------------------- Class C shares - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value and offering price per share (net assets/shares of beneficial interest outstanding) $10.00 $10.37 $10.83 $11.08 $11.08 - ----------------------------------------------------------------------------------------------------------------------------------- Class I shares - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, offering price, and redemption price per share (net assets/shares of beneficial interest outstanding) $10.00 $10.41 $10.87 $11.12 $11.12 - ----------------------------------------------------------------------------------------------------------------------------------- Class R1 shares - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, offering price, and redemption price per share (net assets/shares of beneficial interest outstanding) $10.00 $10.37 $10.83 $11.08 $11.08 - ----------------------------------------------------------------------------------------------------------------------------------- Class R2 shares - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, offering price, and redemption price per share (net assets/shares of beneficial interest outstanding) $10.00 $10.38 $10.85 $11.09 $11.10 - ----------------------------------------------------------------------------------------------------------------------------------- Class R3 shares - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, offering price, and redemption price per share (net assets/shares of beneficial interest outstanding) $10.00 $10.38 $10.84 $11.09 $11.10 - ----------------------------------------------------------------------------------------------------------------------------------- Class R4 shares - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, offering price, and redemption price per share (net assets/shares of beneficial interest outstanding) $10.00 $10.39 $10.86 $11.10 $11.11 - ----------------------------------------------------------------------------------------------------------------------------------- Class R5 shares - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, offering price, and redemption price per share (net assets/shares of beneficial interest outstanding) $10.00 $10.40 $10.87 $11.12 $11.12 - ----------------------------------------------------------------------------------------------------------------------------------- On sales of $50,000 or more, the offering price of Class A shares is reduced. A contingent deferred sales charge may be imposed on redemptions of Class A, Class B, and Class C shares. SEE NOTES TO FINANCIAL STATEMENTS. FINANCIAL STATEMENTS STATEMENTS OF OPERATIONS This is a summary of the investment income your fund earned as well as gains and (losses) for the period. Fund expenses are spelled out. MFS LIFETIME MFS MFS MFS MFS RETIREMENT LIFETIME LIFETIME LIFETIME LIFETIME FOR THE PERIOD ENDED 4/30/06 (c) INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND NET INVESTMENT INCOME - ----------------------------------------------------------------------------------------------------------------------------------- Income Dividends $23,172 $19,989 $30,521 $3,399 $3,333 Interest 1,813 2,014 4,549 2,281 2,061 - ----------------------------------------------------------------------------------------------------------------------------------- Total investment income $24,985 $22,003 $35,070 $5,680 $5,394 - ----------------------------------------------------------------------------------------------------------------------------------- Expenses Distribution and service fees $3,309 $2,326 $8,250 $3,237 $3,156 Shareholder servicing costs 103 166 378 276 289 Administrative services fee 6,526 6,451 6,529 6,455 6,540 Retirement plan administration and services fees 527 746 2,028 754 645 Independent trustees' compensation 1,051 1,200 1,147 1,027 1,051 Custodian fee 5,577 5,857 7,020 6,868 5,639 Shareholder communications 2,868 3,637 3,997 3,256 3,962 Auditing fees 29,800 29,800 29,800 29,800 29,800 Legal fees 1,726 1,995 2,010 1,996 1,390 Registration fees 31,498 30,289 32,533 32,227 30,047 Miscellaneous 986 4,604 5,496 1,044 3,386 - ----------------------------------------------------------------------------------------------------------------------------------- Total expenses $83,971 $87,071 $99,188 $86,940 $85,905 - ----------------------------------------------------------------------------------------------------------------------------------- Fees paid indirectly (23) (14) (32) (65) (9) - ----------------------------------------------------------------------------------------------------------------------------------- Reduction of expenses by investment adviser (79,695) (83,490) (87,512) (82,391) (81,526) - ----------------------------------------------------------------------------------------------------------------------------------- Net expenses $4,253 $3,567 $11,644 $4,484 $4,370 - ----------------------------------------------------------------------------------------------------------------------------------- Net investment income $20,732 $18,436 $23,426 $1,196 $1,024 - ----------------------------------------------------------------------------------------------------------------------------------- REALIZED AND UNREALIZED GAIN (LOSS) ON INVESTMENTS: - ----------------------------------------------------------------------------------------------------------------------------------- Realized gain (loss) (identified cost basis) Investment transactions $(1,660) $(102) $(3,390) $(602) $(10,446) - ----------------------------------------------------------------------------------------------------------------------------------- Capital gain distributions from underlying funds 2,824 8,511 69,714 26,512 30,987 - ----------------------------------------------------------------------------------------------------------------------------------- Net realized gain (loss) on investments $1,164 $8,409 $66,324 $25,910 $20,541 - ----------------------------------------------------------------------------------------------------------------------------------- Change in unrealized appreciation (depreciation) on investments $42 $21,664 $210,126 $113,587 $122,323 - ----------------------------------------------------------------------------------------------------------------------------------- Net realized and unrealized gain (loss) on investments $1,206 $30,073 $276,450 $139,497 $142,864 - ----------------------------------------------------------------------------------------------------------------------------------- Change in net assets from operations $21,938 $48,509 $299,876 $140,693 $143,888 - ----------------------------------------------------------------------------------------------------------------------------------- (c) For the period from the commencement of the funds' investment operations, September 29, 2005, through April 30, 2006. SEE NOTES TO FINANCIAL STATEMENTS. FINANCIAL STATEMENTS STATEMENTS OF CHANGES IN NET ASSETS This statement describes the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions. MFS LIFETIME MFS MFS MFS MFS RETIREMENT LIFETIME LIFETIME LIFETIME LIFETIME FOR THE PERIOD ENDED 4/30/06 (c) INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND CHANGE IN NET ASSETS OPERATIONS - ----------------------------------------------------------------------------------------------------------------------------------- Net investment income $20,732 $18,436 $23,426 $1,196 $1,024 Net realized gain (loss) on investments 1,164 8,409 66,324 25,910 20,541 Net unrealized gain (loss) on investments 42 21,664 210,126 113,587 122,323 - ----------------------------------------------------------------------------------------------------------------------------------- Change in net assets from operations $21,938 $48,509 $299,876 $140,693 $143,888 - ----------------------------------------------------------------------------------------------------------------------------------- DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ----------------------------------------------------------------------------------------------------------------------------------- From net investment income Class A $(6,552) $(781) $(4,841) $(1,295) $(1,878) Class B (3,895) (359) (4,609) (2,096) (1,753) Class C (1,999) (284) (1,235) (1,286) (864) Class I (1,243) (408) (3,274) (2,768) (3,837) Class R1 (1,217) (271) (650) (692) (663) Class R2 (1,021) (315) (694) (736) (707) Class R3 (2,268) (327) (5,359) (1,374) (2,011) Class R4 (1,134) (3,749) (17,153) (1,464) (1,542) Class R5 (1,216) (395) (775) (817) (788) - ----------------------------------------------------------------------------------------------------------------------------------- From net realized gain on investments Class A $-- $-- $-- $-- $(94) Class B -- -- -- -- (94) Class C -- -- -- -- (49) Class I -- -- -- -- (186) Class R1 -- -- -- -- (39) Class R2 -- -- -- -- (39) Class R3 -- -- -- -- (104) Class R4 -- -- -- -- (78) Class R5 -- -- -- -- (39) - ----------------------------------------------------------------------------------------------------------------------------------- Total distributions declared to shareholders $(20,545) $(6,889) $(38,590) $(12,528) $(14,765) - ----------------------------------------------------------------------------------------------------------------------------------- Change in net assets from fund share transactions $2,043,243 $1,962,670 $7,377,215 $2,864,519 $2,335,817 - ----------------------------------------------------------------------------------------------------------------------------------- Total change in net assets $2,044,636 $2,004,290 $7,638,501 $2,992,684 $2,464,940 - ----------------------------------------------------------------------------------------------------------------------------------- NET ASSETS - ----------------------------------------------------------------------------------------------------------------------------------- At end of period $2,044,636 $2,004,290 $7,638,501 $2,992,684 $2,464,940 - ----------------------------------------------------------------------------------------------------------------------------------- Undistributed net investment income included in net assets at end of period $349 $13,429 $12,748 $-- $-- - ----------------------------------------------------------------------------------------------------------------------------------- (c) For the period from the commencement of the funds' investment operations, September 29, 2005, through April 30, 2006. SEE NOTES TO FINANCIAL STATEMENTS. FINANCIAL STATEMENTS FINANCIAL HIGHLIGHTS, MFS(R) LIFETIME RETIREMENT INCOME FUND The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). Certain information reflects financial results for a single fund share. The total returns in the table represent the rate by which an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period. This information has been audited by the fund's independent registered public accounting firm, whose report, together with the fund's financial statements, are included in this report. YEAR ENDED 4/30/06 (c) CLASS A CLASS B CLASS C CLASS I Net asset value, beginning of period $10.00 $10.00 $10.00 $10.00 - ----------------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - ----------------------------------------------------------------------------------------------------------------------------------- Net investment income (d) $0.24 $0.20 $0.19 $0.25 Net realized and unrealized gain (loss) on investments (0.02)(g) (0.01)(g) 0.00(w) (0.01)(g) - ----------------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.22 $0.19 $0.19 $0.24 - ----------------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ----------------------------------------------------------------------------------------------------------------------------------- From net investment income $(0.22) $(0.19) $(0.19) $(0.24) - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $10.00 $10.00 $10.00 $10.00 - ----------------------------------------------------------------------------------------------------------------------------------- Total return (%) (r) 2.27(n)(t) 1.88(n)(t) 1.88(n)(t) 2.48(n) - ----------------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ----------------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f)(h) 14.17(a) 14.82(a) 14.82(a) 13.82(a) Expenses after expense reductions (f)(h) 0.45(a) 1.10(a) 1.10(a) 0.10(a) Net investment income 3.87(a) 3.21(a) 3.14(a) 4.24(a) Portfolio turnover 14 14 14 14 Net assets at end of period (000 Omitted) $724 $367 $379 $51 - ----------------------------------------------------------------------------------------------------------------------------------- YEAR ENDED 4/30/06 (c) CLASS R1 CLASS R2 CLASS R3 CLASS R4 CLASS R5 Net asset value, beginning of period $10.00 $10.00 $10.00 $10.00 $10.00 - ----------------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - ----------------------------------------------------------------------------------------------------------------------------------- Net investment income (d) $0.18 $0.20 $0.20 $0.22 $0.24 Net realized and unrealized gain (loss) on investments 0.00(w) (0.00)(g)(w) 0.01 (0.00)(g)(w) 0.00(w) - ----------------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.18 $0.20 $0.21 $0.22 $0.24 - ----------------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - ----------------------------------------------------------------------------------------------------------------------------------- From net investment income $(0.18) $(0.20) $(0.21) $(0.22) $(0.24) - ----------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $10.00 $10.00 $10.00 $10.00 $10.00 - ----------------------------------------------------------------------------------------------------------------------------------- Total return (%) (r) 1.82(n) 2.03(n) 2.09(n) 2.24(n) 2.42(n) - ----------------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - ----------------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f)(h) 15.02(a) 14.72(a) 14.57(a) 14.22(a) 13.92(a) Expenses after expense reductions (f)(h) 1.20(a) 0.85(a) 0.75(a) 0.50(a) 0.20(a) Net investment income 3.15(a) 3.49(a) 3.54(a) 3.84(a) 4.14(a) Portfolio turnover 14 14 14 14 14 Net assets at end of period (000 Omitted) $127 $51 $241 $53 $51 - ----------------------------------------------------------------------------------------------------------------------------------- (a) Annualized. (c) For the period from the commencement of the fund's investment operations, September 29, 2005, through April 30, 2006. (d) Per share data are based on average shares outstanding. (f) Ratios do not reflect reductions from fees paid indirectly. (g) The per share amount is not in accordance with the net realized and unrealized gain/loss for the period because of the timing of sales of fund shares and the amount of per share realized and unrealized gains and losses at such time. (h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. Because the underlying funds have varied expense and fee levels and the fund may own different proportions of the underlying funds at different times, the amount of fees and expenses incurred directly by the fund will vary. (n) Not annualized. (r) Certain expenses have been reduced without which performance would have been lower. (t) Total returns do not include any applicable sales charges. (w) Per share amount was less than $0.01. SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS FINANCIAL HIGHLIGHTS, MFS(R) LIFETIME 2010 FUND The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). Certain information reflects financial results for a single fund share. The total returns in the table represent the rate by which an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period. This information has been audited by the fund's independent registered public accounting firm, whose report, together with the fund's financial statements, are included in this report. YEAR ENDED 4/30/06 (c) CLASS A CLASS B CLASS C CLASS I Net asset value, beginning of period $10.00 $10.00 $10.00 $10.00 - -------------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - -------------------------------------------------------------------------------------------------------------------------------- Net investment income (d) $0.18 $0.14 $0.14 $0.22 Net realized and unrealized gain (loss) on investments 0.29 0.29 0.29 0.27 - -------------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.47 $0.43 $0.43 $0.49 - -------------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - -------------------------------------------------------------------------------------------------------------------------------- From net investment income $(0.08) $(0.06) $(0.06) $(0.08) - -------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $10.39 $10.37 $10.37 $10.41 - -------------------------------------------------------------------------------------------------------------------------------- Total return (%) (r) 4.67(n)(t) 4.32(n)(t) 4.28(n)(t) 4.94(n) - -------------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - -------------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f)(h) 13.57(a) 14.22(a) 14.22(a) 13.22(a) Expenses after expense reductions (f)(h) 0.45(a) 1.10(a) 1.10(a) 0.10(a) Net investment income 2.96(a) 2.32(a) 2.33(a) 3.26(a) Portfolio turnover 3 3 3 3 Net assets at end of period (000 Omitted) $468 $138 $96 $264 - -------------------------------------------------------------------------------------------------------------------------------- YEAR ENDED 4/30/06 (c) CLASS R1 CLASS R2 CLASS R3 CLASS R4 CLASS R5 Net asset value, beginning of period $10.00 $10.00 $10.00 $10.00 $10.00 - -------------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - -------------------------------------------------------------------------------------------------------------------------------- Net investment income (d) $0.13 $0.15 $0.14 $0.22 $0.19 Net realized and unrealized gain (loss) on investments 0.29 0.29 0.31 0.25 0.29 - -------------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.42 $0.44 $0.45 $0.47 $0.48 - -------------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - -------------------------------------------------------------------------------------------------------------------------------- From net investment income $(0.05) $(0.06) $(0.07) $(0.08) $(0.08) - -------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $10.37 $10.38 $10.38 $10.39 $10.40 - -------------------------------------------------------------------------------------------------------------------------------- Total return (%) (r) 4.26(n) 4.45(n) 4.47(n) 4.71(n) 4.81(n) - -------------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - -------------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f)(h) 14.42(a) 14.12(a) 13.97(a) 13.62(a) 13.32(a) Expenses after expense reductions (f)(h) 1.20(a) 0.85(a) 0.75(a) 0.50(a) 0.20(a) Net investment income 2.21(a) 2.58(a) 2.71(a) 3.08(a) 3.22(a) Portfolio turnover 3 3 3 3 3 Net assets at end of period (000 Omitted) $86 $90 $261 $549 $52 - -------------------------------------------------------------------------------------------------------------------------------- (a) Annualized. (c) For the period from the commencement of the fund's investment operations, September 29, 2005, through April 30, 2006. (d) Per share data are based on average shares outstanding. (f) Ratios do not reflect reductions from fees paid indirectly. (h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. Because the underlying funds have varied expense and fee levels and the fund may own different proportions of the underlying funds at different times, the amount of fees and expenses incurred directly by the fund will vary. (n) Not annualized. (r) Certain expenses have been reduced without which performance would have been lower. (t) Total returns do not include any applicable sales charges. SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS FINANCIAL HIGHLIGHTS, MFS(R) LIFETIME 2020 FUND The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). Certain information reflects financial results for a single fund share. The total returns in the table represent the rate by which an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period. This information has been audited by the fund's independent registered public accounting firm, whose report, together with the fund's financial statements, are included in this report. YEAR ENDED 4/30/06 (c) CLASS A CLASS B CLASS C CLASS I Net asset value, beginning of period $10.00 $10.00 $10.00 $10.00 - -------------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - -------------------------------------------------------------------------------------------------------------------------------- Net investment income (d) $0.08 $0.06 $0.06 $0.10 Net realized and unrealized gain (loss) on investments 0.92 0.90 0.91 0.93 - -------------------------------------------------------------------------------------------------------------------------------- Total from investment operations $1.00 $0.96 $0.97 $1.03 - -------------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - -------------------------------------------------------------------------------------------------------------------------------- From net investment income $(0.15) $(0.14) $(0.14) $(0.16) - -------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $10.85 $10.82 $10.83 $10.87 - -------------------------------------------------------------------------------------------------------------------------------- Total return (%) (r) 10.14(n)(t) 9.71(n)(t) 9.79(n)(t) 10.38(n) - -------------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - -------------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f)(h) 5.30(a) 5.95(a) 5.95(a) 4.95(a) Expenses after expense reductions (f)(h) 0.45(a) 1.10(a) 1.10(a) 0.10(a) Net investment income 1.34(a) 0.84(a) 0.96(a) 1.60(a) Portfolio turnover 4 4 4 4 Net assets at end of period (000 Omitted) $2,718 $1,009 $143 $324 - -------------------------------------------------------------------------------------------------------------------------------- YEAR ENDED 4/30/06 (c) CLASS R1 CLASS R2 CLASS R3 CLASS R4 CLASS R5 Net asset value, beginning of period $10.00 $10.00 $10.00 $10.00 $10.00 - -------------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - -------------------------------------------------------------------------------------------------------------------------------- Net investment income (d) $0.04 $0.07 $0.08 $0.12 $0.11 Net realized and unrealized gain (loss) on investments 0.92 0.92 0.91 0.89 0.91 - -------------------------------------------------------------------------------------------------------------------------------- Total from investment operations $0.96 $0.99 $0.99 $1.01 $1.02 - -------------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - -------------------------------------------------------------------------------------------------------------------------------- From net investment income $(0.13) $(0.14) $(0.15) $(0.15) $(0.15) - -------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $10.83 $10.85 $10.84 $10.86 $10.87 - -------------------------------------------------------------------------------------------------------------------------------- Total return (%) (r) 9.68(n) 9.97(n) 9.99(n) 10.24(n) 10.35(n) - -------------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - -------------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f)(h) 6.14(a) 5.85(a) 5.69(a) 5.35(a) 5.05(a) Expenses after expense reductions (f)(h) 1.20(a) 0.85(a) 0.75(a) 0.50(a) 0.20(a) Net investment income 0.58(a) 1.19(a) 1.28(a) 1.63(a) 1.87(a) Portfolio turnover 4 4 4 4 4 Net assets at end of period (000 Omitted) $549 $90 $1,271 $1,480 $55 - -------------------------------------------------------------------------------------------------------------------------------- (a) Annualized. (c) For the period from the commencement of the fund's investment operations, September 29, 2005, through April 30, 2006. (d) Per share data are based on average shares outstanding. (f) Ratios do not reflect reductions from fees paid indirectly. (h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. Because the underlying funds have varied expense and fee levels and the fund may own different proportions of the underlying funds at different times, the amount of fees and expenses incurred directly by the fund will vary. (n) Not annualized. (r) Certain expenses have been reduced without which performance would have been lower. (t) Total returns do not include any applicable sales charges. SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS FINANCIAL HIGHLIGHTS, MFS(R) LIFETIME 2030 FUND The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). Certain information reflects financial results for a single fund share. The total returns in the table represent the rate by which an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period. This information has been audited by the fund's independent registered public accounting firm, whose report, together with the fund's financial statements, are included in this report. YEAR ENDED 4/30/06 (c) CLASS A CLASS B CLASS C CLASS I Net asset value, beginning of period $10.00 $10.00 $10.00 $10.00 - -------------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - -------------------------------------------------------------------------------------------------------------------------------- Net investment income (loss) (d) $0.01 $(0.03) $(0.01) $0.04 Net realized and unrealized gain (loss) on investments 1.25 1.25 1.24 1.25 - -------------------------------------------------------------------------------------------------------------------------------- Total from investment operations $1.26 $1.22 $1.23 $1.29 - -------------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - -------------------------------------------------------------------------------------------------------------------------------- From net investment income $(0.16) $(0.15) $(0.15) $(0.17) - -------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $11.10 $11.07 $11.08 $11.12 - -------------------------------------------------------------------------------------------------------------------------------- Total return (%) (r) 12.73(n)(t) 12.36(n)(t) 12.39(n)(t) 12.99(n) - -------------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - -------------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f)(h) 11.40(a) 12.05(a) 12.05(a) 11.05(a) Expenses after expense reductions (f)(h) 0.45(a) 1.10(a) 1.10(a) 0.10(a) Net investment income (loss) 0.20(a) (0.41)(a) (0.13)(a) 0.67(a) Portfolio turnover 4 4 4 4 Net assets at end of period (000 Omitted) $686 $382 $114 $701 - -------------------------------------------------------------------------------------------------------------------------------- YEAR ENDED 4/30/06 (c) CLASS R1 CLASS R2 CLASS R3 CLASS R4 CLASS R5 Net asset value, beginning of period $10.00 $10.00 $10.00 $10.00 $10.00 - -------------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - -------------------------------------------------------------------------------------------------------------------------------- Net investment income (loss) (d) $(0.03) $0.00(w) $0.01 $0.02 $0.04 Net realized and unrealized gain (loss) on investments 1.25 1.24 1.23 1.24 1.24 - -------------------------------------------------------------------------------------------------------------------------------- Total from investment operations $1.22 $1.24 $1.24 $1.26 $1.28 - -------------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - -------------------------------------------------------------------------------------------------------------------------------- From net investment income $(0.14) $(0.15) $(0.15) $(0.16) $(0.16) - -------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $11.08 $11.09 $11.09 $11.10 $11.12 - -------------------------------------------------------------------------------------------------------------------------------- Total return (%) (r) 12.29(n) 12.49(n) 12.56(n) 12.72(n) 12.97(n) - -------------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - -------------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f)(h) 12.25(a) 11.95(a) 11.80(a) 11.45(a) 11.15(a) Expenses after expense reductions (f)(h) 1.20(a) 0.85(a) 0.75(a) 0.50(a) 0.20(a) Net investment income (loss) (0.49)(a) 0.05(a) 0.10(a) 0.33(a) 0.71(a) Portfolio turnover 4 4 4 4 4 Net assets at end of period (000 Omitted) $306 $62 $331 $354 $56 - -------------------------------------------------------------------------------------------------------------------------------- (a) Annualized. (c) For the period from the commencement of the fund's investment operations, September 29, 2005, through April 30, 2006. (d) Per share data are based on average shares outstanding. (f) Ratios do not reflect reductions from fees paid indirectly. (h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. Because the underlying funds have varied expense and fee levels and the fund may own different proportions of the underlying funds at different times, the amount of fees and expenses incurred directly by the fund will vary. (n) Not annualized. (r) Certain expenses have been reduced without which performance would have been lower. (t) Total returns do not include any applicable sales charges. (w) Per share amount is less than $0.01. SEE NOTES TO FINANCIAL STATEMENTS FINANCIAL STATEMENTS FINANCIAL HIGHLIGHTS, MFS(R) LIFETIME 2040 FUND The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years (or life of a particular share class, if shorter). Certain information reflects financial results for a single fund share. The total returns in the table represent the rate by which an investor would have earned (or lost) on an investment in the fund share class (assuming reinvestment of all distributions) held for the entire period. This information has been audited by the fund's independent registered public accounting firm, whose report, together with the fund's financial statements, are included in this report. YEAR ENDED 4/30/06 (c) CLASS A CLASS B CLASS C CLASS I Net asset value, beginning of period $10.00 $10.00 $10.00 $10.00 - -------------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - -------------------------------------------------------------------------------------------------------------------------------- Net investment income (loss) (d) $0.01 $(0.03) $(0.02) $0.04 Net realized and unrealized gain (loss) on investments 1.26 1.27 1.25 1.25 - -------------------------------------------------------------------------------------------------------------------------------- Total from investment operations $1.27 $1.24 $1.23 $1.29 - -------------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - -------------------------------------------------------------------------------------------------------------------------------- From net investment income $(0.16) $(0.15) $(0.14) $(0.16) From net realized gain on investments (0.01) (0.01) (0.01) (0.01) - -------------------------------------------------------------------------------------------------------------------------------- Total distributions declared to shareholders $(0.17) $(0.16) $(0.15) $(0.17) - -------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $11.10 $11.08 $11.08 $11.12 - -------------------------------------------------------------------------------------------------------------------------------- Total return (%) (r) 12.76(n)(t) 12.45(n)(t) 12.38(n)(t) 13.01(n) - -------------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - -------------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f)(h) 11.32(a) 11.97(a) 11.97(a) 10.97(a) Expenses after expense reductions (f)(h) 0.45(a) 1.10(a) 1.10(a) 0.10(a) Net investment income (loss) 0.10(a) (0.45)(a) (0.26)(a) 0.62(a) Portfolio turnover 33 33 33 33 Net assets at end of period (000 Omitted) $599 $466 $86 $582 - -------------------------------------------------------------------------------------------------------------------------------- YEAR ENDED 4/30/06 (c) CLASS R1 CLASS R2 CLASS R3 CLASS R4 CLASS R5 Net asset value, beginning of period $10.00 $10.00 $10.00 $10.00 $10.00 - -------------------------------------------------------------------------------------------------------------------------------- INCOME (LOSS) FROM INVESTMENT OPERATIONS - -------------------------------------------------------------------------------------------------------------------------------- Net investment income (loss) (d) $(0.03) $0.00(w) $0.01 $0.03 $0.04 Net realized and unrealized gain (loss) on investments 1.25 1.25 1.25 1.24 1.25 - -------------------------------------------------------------------------------------------------------------------------------- Total from investment operations $1.22 $1.25 $1.26 $1.27 $1.29 - -------------------------------------------------------------------------------------------------------------------------------- LESS DISTRIBUTIONS DECLARED TO SHAREHOLDERS - -------------------------------------------------------------------------------------------------------------------------------- From net investment income $(0.13) $(0.14) $(0.15) $(0.15) $(0.16) From net realized gain on investments (0.01) (0.01) (0.01) (0.01) (0.01) - -------------------------------------------------------------------------------------------------------------------------------- Total distributions declared to shareholders $(0.14) $(0.15) $(0.16) $(0.16) $(0.17) - -------------------------------------------------------------------------------------------------------------------------------- Net asset value, end of period $11.08 $11.10 $11.10 $11.11 $11.12 - -------------------------------------------------------------------------------------------------------------------------------- Total return (%) (r) 12.31(n) 12.61(n) 12.70(n) 12.84(n) 12.99(n) - -------------------------------------------------------------------------------------------------------------------------------- RATIOS (%) (TO AVERAGE NET ASSETS) AND SUPPLEMENTAL DATA: - -------------------------------------------------------------------------------------------------------------------------------- Expenses before expense reductions (f)(h) 12.17(a) 11.87(a) 11.72(a) 11.37(a) 11.07(a) Expenses after expense reductions (f)(h) 1.20(a) 0.85(a) 0.75(a) 0.50(a) 0.20(a) Net investment income (loss) (0.42)(a) 0.02(a) 0.08(a) 0.38(a) 0.67(a) Portfolio turnover 33 33 33 33 33 Net assets at end of period (000 Omitted) $127 $56 $323 $169 $56 - -------------------------------------------------------------------------------------------------------------------------------- (a) Annualized. (c) For the period from the commencement of the fund's investment operations, September 29, 2005, through April 30, 2006. (d) Per share data are based on average shares outstanding. (f) Ratios do not reflect reductions from fees paid indirectly. (h) In addition to the fees and expenses which the fund bears directly, the fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which the fund invests. Because the underlying funds have varied expense and fee levels and the fund may own different proportions of the underlying funds at different times, the amount of fees and expenses incurred directly by the fund will vary. (n) Not annualized. (r) Certain expenses have been reduced without which performance would have been lower. (t) Total returns do not include any applicable sales charges. (w) Per share amount is less than $0.01. SEE NOTES TO FINANCIAL STATEMENTS NOTES TO FINANCIAL STATEMENTS (1) BUSINESS AND ORGANIZATION MFS Lifetime Retirement Income Fund, MFS Lifetime 2010 fund, MFS Lifetime 2020 Fund, MFS Lifetime 2030 Fund, and MFS Lifetime 2040 Fund (the funds) are each a series of MFS Series Trust XII (the trust). The trust is organized as a Massachusetts business trust and is registered under the Investment Company Act of 1940, as amended, as an open-end management investment company. (2) SIGNIFICANT ACCOUNTING POLICIES General - The preparation of financial statements in conformity with U.S. generally accepted accounting principles requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Each fund is a "fund of funds", which invests the majority of its assets in other MFS equity, fixed income, international and money market mutual funds (underlying funds), which in turn may engage in a number of investment techniques and practices, which involve certain risks. Each underlying fund's accounting policies are outlined in the underlying fund's financial statements and are available upon request. Investment Valuations - Open-end investment companies are generally valued at their net asset value per share. The underlying investments of open-end investment companies managed by the adviser are valued as described below. Equity securities, including restricted equity securities, are generally valued at the last sale or official closing price as reported by an independent pricing service on the market or exchange on which they are primarily traded. For securities for which there were no sales reported that day, equity securities are generally valued at the last quoted daily bid quotation as reported by an independent pricing service on the market or exchange on which they are primarily traded. Debt instruments (other than short-term instruments), including restricted debt instruments, are generally valued at an evaluated or composite bid as reported by an independent pricing service. Values of debt instruments obtained from pricing services can utilize both dealer-supplied valuations and electronic data processing techniques, which take into account factors such as institutional-size trading in similar groups of securities, yield, quality, coupon rate, maturity, type of issue, trading characteristics and other market data. Short-term instruments with a maturity at issuance of 397 days or less are generally valued at amortized cost, which approximates market value. Exchange-traded options are generally valued at the last sale or official closing price as reported by an independent pricing service on the exchange on which they are primarily traded. For exchange-traded options in which there were no sales reported that day, exchange-traded options are generally valued at the last daily bid quotation as reported by an independent pricing service on the exchange on which they are primarily traded. Options not traded on an exchange are generally valued at a broker-dealer bid quotation. Foreign currency options are generally valued using an external pricing model that uses market data from an independent source. Futures contracts are generally valued at last posted settlement price as reported by an independent pricing service on the market on which they are primarily traded. Futures contracts for which there were no trades that day for a particular position are generally valued at the closing bid quotation as reported by an independent pricing service on the market on which they are primarily traded. Forward foreign currency contracts are generally valued at the mean of bid and asked prices for the time period interpolated from rates reported by an independent pricing service for proximate time periods. Swaps are generally valued at a broker-dealer bid quotation. Securities and other assets generally valued on the basis of information from an independent pricing service may also be valued at a broker-dealer bid quotation. The values of foreign securities and other assets and liabilities expressed in foreign currencies are converted to U.S. dollars using the mean of bid and asked prices for rates reported by an independent pricing service. The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of each fund's investments (including any fair valuation) to the adviser pursuant to valuation policies and procedures approved by the Board. If the adviser determines that reliable market quotations are not readily available, investments are valued at fair value as determined in good faith by the adviser in accordance with such procedures under the oversight of the Board of Trustees. Under each fund's valuation policies and procedures, market quotations are not considered to be readily available for many types of debt instruments. These investments are generally valued at fair value based on information from independent pricing services. These valuations can be based on both dealer-supplied valuations and electronic data processing techniques, which take into account factors such as institutional-size trading in similar groups of securities, yield, quality, coupon rate, maturity, type of issue, trading characteristics and other market data. The adviser may rely on independent pricing services or other information (such as the correlation with price movements of similar securities in the same or other markets; the type, cost and investment characteristics of the security; the business and financial condition of the issuer; and trading and other market data) to assist in determining whether to fair value and at what value to fair value an investment. The value of an investment for purposes of calculating each fund's net asset value can differ depending on the source and method used to determine value. When fair valuation is used, the value of investments used to determine each fund's net asset value may differ from quoted or published prices for the same investments. In addition, investments may be valued at fair value if the adviser determines that an investment's value has been materially affected by events occurring after the close of the exchange or market on which the investment is principally traded (such as foreign exchange or market) and prior to the determination of each fund's net asset value, or after the halting of trading of a specific security where trading does not resume prior to the close of the exchange or market on which the security is principally traded. Events that occur on a frequent basis after foreign markets close (such as developments in foreign markets and significant movements in the U.S. markets) and prior to the determination of each fund's net asset value may be deemed to have a material affect on the value of securities traded in foreign markets. Accordingly, each fund's foreign equity securities may often be valued at fair value. Investment Transactions and Income - Investment transactions are recorded on the trade date. Interest income is recorded on an accrual basis. All discount is accreted for tax reporting purposes as required by federal income tax regulations. Distributions of income and capital gains from the underlying funds are recorded on the ex-dividend date. In determining the net gain or loss on securities sold, the cost of securities is determined on the identified cost basis. Fees Paid Indirectly - Each fund's custody fee is reduced according to an arrangement that measures the value of cash deposited with the custodian by each fund. This amount, for the period ended April 30, 2006, is shown as a reduction of total expenses on the Statement of Operations. Tax Matters and Distributions - Each fund intends to continue to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable income, including realized capital gains. Accordingly, no provision for federal income tax is required in the financial statements. Foreign taxes, if any, have been accrued by each fund in the accompanying financial statements. Distributions to shareholders are recorded on the ex-dividend date. Income and capital gain distributions are determined in accordance with income tax regulations, which may differ from generally accepted accounting principles. Certain capital accounts in the financial statements are periodically adjusted for permanent differences in order to reflect their tax character. These adjustments have no impact on net assets or net asset value per share. Temporary differences which arise from recognizing certain items of income, expense, gain or loss in different periods for financial statement and tax purposes will reverse at some time in the future. Distributions in excess of net investment income or net realized gains are temporary overdistributions for financial statement purposes resulting from differences in the recognition or classification of income or distributions for financial statement and tax purposes. Book/tax differences primarily relate to wash sale loss deferrals, short-term capital gain distributions received from underlying funds and treating a portion of the proceeds from redemptions as a distribution for tax purposes. The tax character of distributions declared to shareholders is as follows: MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND Ordinary income (including any short-term capital gains) $20,545 $6,889 $38,590 $12,044 $14,043 Long-term capital gain -- -- -- 484 722 - ----------------------------------------------------------------------------------------------------------------------------------- $20,545 $6,889 $38,590 $12,528 $14,765 The federal tax cost and the tax basis components of distributable earnings were as follows: MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND AS OF APRIL 30, 2006 Cost of investments $2,112,079 $2,160,218 $7,526,104 $2,960,909 $2,436,331 - ----------------------------------------------------------------------------------------------------------------------------------- Gross appreciation $15,706 $33,990 $225,255 $113,264 $111,306 Gross depreciation (17,396) (12,633) (18,544) (337) -- - ----------------------------------------------------------------------------------------------------------------------------------- Net unrealized appreciation (depreciation) $(1,690) $21,357 $206,711 $112,927 $111,306 Undistributed ordinary income $5,354 $13,429 $12,748 $-- $319 Undistributed long-term capital gain 2,734 6,834 41,827 15,238 15,234 Other temporary differences (5,005) -- -- -- -- Multiple Classes of Shares of Beneficial Interest - Each fund offers multiple classes of shares, which differ in their respective distribution and service fees. All shareholders bear the common expenses of each fund based on daily net assets of each class, without distinction between share classes. Dividends are declared separately for each class. Differences in per share dividend rates are generally due to differences in separate class expenses. Class B shares will convert to Class A shares, respectively approximately eight years after purchase. (3) TRANSACTIONS WITH AFFILIATES Investment Adviser - Each fund has an investment advisory agreement with Massachusetts Financial Services Company (MFS) to provide overall investment advisory and administrative services, and general office facilities. MFS receives no compensation under this agreement. The investment adviser has contractually agreed to pay a portion of each fund's operating expenses, exclusive of distribution and service, retirement plan administration and services, and certain other fees and expenses, such that each fund's operating expenses do not exceed 0.10% annually of each fund's average daily net assets. This contractual fee arrangement will continue until September 1, 2006. For the period ended April 30, 2006, this reduction amounted to the following amounts for each fund and is reflected as a reduction of total expenses in the Statements of Operations: MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND $79,545 $83,360 $87,088 $82,196 $81,347 In addition to the fees and expenses which each fund bears directly, each fund indirectly bears a pro rata share of the fees and expenses of the underlying funds in which a fund invests. Distributor - MFS Fund Distributors, Inc. (MFD), a wholly owned subsidiary of MFS, as distributor, received the following amounts for the period ended April 30, 2006, as its portion of the initial sales charge on sales of Class A shares of each fund. MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND $306 $1,128 $4,037 $2,541 $1,181 The Board of Trustees has adopted a distribution plan for certain class shares pursuant to Rule 12b-1 of the Investment Company Act of 1940. Each fund's distribution plan provides that the fund will pay MFD for services provided by MFD and financial intermediaries in connection with the distribution and servicing of certain share classes. One component of the plan is a distribution fee paid to MFD and another component of the plan is a service fee paid to MFD. MFD may subsequently pay all, or a portion, of the distribution and/or service fees to financial intermediaries. Distribution Fee Plan Table: CLASS A --------------------------------------------------------------------------------------- TOTAL ANNUAL DISTRIBUTION DISTRIBUTION SERVICE DISTRIBUTION EFFECTIVE AND SERVICE FEE RATE FEE RATE PLAN(1) RATE(2) FEE MFS Lifetime Retirement Income Fund 0.10% 0.25% 0.35% 0.35% $605 MFS Lifetime 2010 Fund 0.10% 0.25% 0.35% 0.35% 387 MFS Lifetime 2020 Fund 0.10% 0.25% 0.35% 0.35% 1,495 MFS Lifetime 2030 Fund 0.10% 0.25% 0.35% 0.35% 516 MFS Lifetime 2040 Fund 0.10% 0.25% 0.35% 0.35% 555 CLASS B --------------------------------------------------------------------------------------- TOTAL ANNUAL DISTRIBUTION DISTRIBUTION SERVICE DISTRIBUTION EFFECTIVE AND SERVICE FEE RATE FEE RATE PLAN(1) RATE(2) FEE MFS Lifetime Retirement Income Fund 0.75% 0.25% 1.00% 1.00% $1,225 MFS Lifetime 2010 Fund 0.75% 0.25% 1.00% 1.00% 419 MFS Lifetime 2020 Fund 0.75% 0.25% 1.00% 1.00% 2,752 MFS Lifetime 2030 Fund 0.75% 0.25% 1.00% 1.00% 1,022 MFS Lifetime 2040 Fund 0.75% 0.25% 1.00% 1.00% 1,160 CLASS C --------------------------------------------------------------------------------------- TOTAL ANNUAL DISTRIBUTION DISTRIBUTION SERVICE DISTRIBUTION EFFECTIVE AND SERVICE FEE RATE FEE RATE PLAN(1) RATE(2) FEE MFS Lifetime Retirement Income Fund 0.75% 0.25% 1.00% 1.00% $645 MFS Lifetime 2010 Fund 0.75% 0.25% 1.00% 1.00% 348 MFS Lifetime 2020 Fund 0.75% 0.25% 1.00% 1.00% 508 MFS Lifetime 2030 Fund 0.75% 0.25% 1.00% 1.00% 485 MFS Lifetime 2040 Fund 0.75% 0.25% 1.00% 1.00% 393 CLASS R1 --------------------------------------------------------------------------------------- TOTAL ANNUAL DISTRIBUTION DISTRIBUTION SERVICE DISTRIBUTION EFFECTIVE AND SERVICE FEE RATE FEE RATE PLAN(1) RATE(2) FEE MFS Lifetime Retirement Income Fund 0.50% 0.25% 0.75% 0.75% $294 MFS Lifetime 2010 Fund 0.50% 0.25% 0.75% 0.75% 286 MFS Lifetime 2020 Fund 0.50% 0.25% 0.75% 0.75% 748 MFS Lifetime 2030 Fund 0.50% 0.25% 0.75% 0.75% 515 MFS Lifetime 2040 Fund 0.50% 0.25% 0.75% 0.75% 294 CLASS R2 --------------------------------------------------------------------------------------- TOTAL ANNUAL DISTRIBUTION DISTRIBUTION SERVICE DISTRIBUTION EFFECTIVE AND SERVICE FEE RATE FEE RATE PLAN(1) RATE(2) FEE MFS Lifetime Retirement Income Fund 0.25% 0.25% 0.50% 0.50% $148 MFS Lifetime 2010 Fund 0.25% 0.25% 0.50% 0.50% 161 MFS Lifetime 2020 Fund 0.25% 0.25% 0.50% 0.50% 164 MFS Lifetime 2030 Fund 0.25% 0.25% 0.50% 0.50% 159 MFS Lifetime 2040 Fund 0.25% 0.25% 0.50% 0.50% 155 CLASS R3 --------------------------------------------------------------------------------------- TOTAL ANNUAL DISTRIBUTION DISTRIBUTION SERVICE DISTRIBUTION EFFECTIVE AND SERVICE FEE RATE FEE RATE PLAN(1) RATE(2) FEE MFS Lifetime Retirement Income Fund 0.25% 0.25% 0.50% 0.50% $318 MFS Lifetime 2010 Fund 0.25% 0.25% 0.50% 0.50% 198 MFS Lifetime 2020 Fund 0.25% 0.25% 0.50% 0.50% 1,330 MFS Lifetime 2030 Fund 0.25% 0.25% 0.50% 0.50% 375 MFS Lifetime 2040 Fund 0.25% 0.25% 0.50% 0.50% 448 CLASS R4 --------------------------------------------------------------------------------------- TOTAL ANNUAL DISTRIBUTION DISTRIBUTION SERVICE DISTRIBUTION EFFECTIVE AND SERVICE FEE RATE FEE RATE PLAN(1) RATE(2) FEE MFS Lifetime Retirement Income Fund -- 0.25% 0.25% 0.25% $74 MFS Lifetime 2010 Fund -- 0.25% 0.25% 0.25% 527 MFS Lifetime 2020 Fund -- 0.25% 0.25% 0.25% 1,253 MFS Lifetime 2030 Fund -- 0.25% 0.25% 0.25% 165 MFS Lifetime 2040 Fund -- 0.25% 0.25% 0.25% 151 MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIMEMFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND Total Distribution and Service Fees $3,309 $2,326 $8,250 $3,237 $3,156 (1) In accordance with the distribution plan for certain classes, each fund pays distribution and/or service fees up to these annual percentage rates of each class' average daily net assets. (2) The annual effective rates represent actual fees incurred under the distribution plan for the period ended April 30, 2006 based on each class' average daily net assets. Certain Class A and Class C shares are subject to a contingent deferred sales charge in the event of a shareholder redemption within 12 months of purchase. Class B shares are subject to a contingent deferred sales charge in the event of a shareholder redemption within six years of purchase. All contingent deferred sales charges are paid to MFD and during the period ended April 30, 2006, were as follows: MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME CDSC IMPOSED INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND Class A $-- $-- $-- $-- $-- Class B -- -- -- -- 104 Class C -- -- -- -- -- Shareholder Servicing Agent - MFS Service Center, Inc. (MFSC), a wholly-owned subsidiary of MFS, receives payment from each fund for out-of-pocket and sub- accounting expenses paid by MFSC on behalf of each fund. For the period ended April 30, 2006, these costs amounted to the following: MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND $57 $95 $220 $125 $135 Administrator - MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to certain funds for which MFS acts as investment adviser. Under an administrative services agreement, the funds may partially reimburse MFS the costs incurred to provide these services, subject to review and approval by the Board of Trustees. Each fund is charged a fixed amount and, until March 31, 2006, a fee based on calendar year average net assets. From July 1, 2005 through March 31, 2006, each fund's annual fixed amount was $10,000. Effective April 1, 2006, each fund pays an annual fixed amount of $17,500. The administrative services fee incurred for the period ended April 30, 2006 was equivalent to the following annual effective rates of each fund's average daily net assets: MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND 1.1254% 1.0153% 0.3632% 0.8600% 0.8739% In addition to the administrative services provided by MFS to each fund as described above, MFS is responsible for providing certain retirement plan administration and services with respect to certain shares. These services include various administrative, recordkeeping, and communication/educational services with respect to the retirement plans which invest in these shares, and may be provided directly by MFS or by a third party. MFS may subsequently pay all, or a portion, of the retirement plan administration and services fee to affiliated or unaffiliated third parties. For the period ended April 30, 2006, each fund paid MFS an annual retirement plan administration and services fee up to the following annual percentage rates of each class' average daily net assets: CLASS R1 ----------------------------------------------------- ANNUAL EFFECTIVE TOTAL FEE RATE RATE(1) AMOUNT MFS Lifetime Retirement Income Fund 0.45% 0.35% $176 MFS Lifetime 2010 Fund 0.45% 0.35% 172 MFS Lifetime 2020 Fund 0.45% 0.35% 449 MFS Lifetime 2030 Fund 0.45% 0.35% 309 MFS Lifetime 2040 Fund 0.45% 0.35% 177 CLASS R2 ----------------------------------------------------- ANNUAL EFFECTIVE TOTAL FEE RATE RATE(1) AMOUNT MFS Lifetime Retirement Income Fund 0.40% 0.25% $118 MFS Lifetime 2010 Fund 0.40% 0.25% 129 MFS Lifetime 2020 Fund 0.40% 0.25% 131 MFS Lifetime 2030 Fund 0.40% 0.25% 127 MFS Lifetime 2040 Fund 0.40% 0.25% 123 CLASS R3 ----------------------------------------------------- ANNUAL EFFECTIVE TOTAL FEE RATE RATE(1) AMOUNT MFS Lifetime Retirement Income Fund 0.25% 0.15% $159 MFS Lifetime 2010 Fund 0.25% 0.15% 99 MFS Lifetime 2020 Fund 0.25% 0.15% 665 MFS Lifetime 2030 Fund 0.25% 0.15% 188 MFS Lifetime 2040 Fund 0.25% 0.15% 223 CLASS R4 ----------------------------------------------------- ANNUAL EFFECTIVE TOTAL FEE RATE RATE(1) AMOUNT MFS Lifetime Retirement Income Fund 0.15% 0.15% $44 MFS Lifetime 2010 Fund 0.15% 0.15% 316 MFS Lifetime 2020 Fund 0.15% 0.15% 752 MFS Lifetime 2030 Fund 0.15% 0.15% 99 MFS Lifetime 2040 Fund 0.15% 0.15% 91 CLASS R5 ----------------------------------------------------- ANNUAL EFFECTIVE TOTAL FEE RATE RATE(1) AMOUNT MFS Lifetime Retirement Income Fund 0.10% 0.10% $30 MFS Lifetime 2010 Fund 0.10% 0.10% 30 MFS Lifetime 2020 Fund 0.10% 0.10% 31 MFS Lifetime 2030 Fund 0.10% 0.10% 31 MFS Lifetime 2040 Fund 0.10% 0.10% 31 MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND Total Retirement Plan Administration and Services Fees $527 $746 $2,028 $754 $645 (1) MFS has contractually agreed to waive a portion of the retirement plan administration and services fee equal to 0.10% for Class R1 shares, 0.15% for Class R2 shares, and 0.10% for Class R3 shares. This agreement will continue until at least September 30, 2007. For the period ended April 30, 2006, this waiver amounted to the following and is reflected as a reduction of total expenses in the Statements of Operations: MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND $147 $126 $416 $191 $175 Trustees' and Officers' Compensation - Each fund pays compensation to Independent Trustees in the form of a retainer, attendance fees, and additional compensation to Board and Committee chairpersons. The funds do not pay compensation directly to Trustees or officers of the funds who are also officers of the investment adviser, all of whom receive remuneration for their services to the funds from MFS. Certain officers and Trustees of the funds are officers or directors of MFS, MFD, and MFSC. Other - Each fund and certain other MFS funds (the funds) have entered into a services agreement (the Agreement) which provides for payment of fees by the funds to Tarantino LLC in return for the provision of services of an Independent Chief Compliance Officer (ICCO) for the funds. The ICCO is an officer of the funds and the sole member of Tarantino LLC. The funds can terminate the Agreement with Tarantino LLC at any time under the terms of the Agreement. For the period ended April 30, 2006, the fees paid to Tarantino LLC amounted to the following: MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND $4 $4 $10 $4 $4 MFS has agreed to reimburse each fund for a portion of the payments made by the funds to Tarantino LLC in the following amounts, which are shown as a reduction of total expenses in the Statements of Operations. Additionally, MFS has agreed to bear all expenses associated with office space, other administrative support, and supplies provided to the ICCO. MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND $3 $4 $8 $4 $4 (4) PORTFOLIO SECURITIES Purchases and sales of shares of funds, within the MFS Family of Funds, were as follows: MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND Purchases $2,206,225 $2,023,933 $7,558,100 $2,948,892 $2,778,758 - ----------------------------------------------------------------------------------------------------------------------------------- Sales $137,219 $33,920 $116,341 $49,041 $405,997 - ----------------------------------------------------------------------------------------------------------------------------------- (5) SHARES OF BENEFICIAL INTEREST Each fund's Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. Transactions in each fund's shares were as follows: MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND ---------------------- -------------------- -------------------- -------------------- -------------------- YEAR ENDED YEAR ENDED YEAR ENDED YEAR ENDED YEAR ENDED APRIL 30, 2006 (c) APRIL 30, 2006 (c) APRIL 30, 2006 (c) APRIL 30, 2006 (c) APRIL 30, 2006 (c) ---------------------- -------------------- -------------------- -------------------- -------------------- SHARES AMOUNT SHARES AMOUNT SHARES AMOUNT SHARES AMOUNT SHARES AMOUNT Shares sold Class A 71,702 $715,408 44,951 $459,461 266,782 $2,826,407 63,790 $682,234 82,181 $876,457 Class B 36,355 363,854 13,486 137,304 93,083 964,228 35,228 372,134 44,731 473,676 Class C 37,691 376,725 9,201 93,225 13,049 134,132 10,173 104,654 7,693 78,848 Class I 5,000 50,030 25,366 257,291 29,490 305,076 63,055 669,639 62,701 659,424 Class R1 12,802 128,015 8,222 83,117 50,609 533,361 27,532 295,018 11,391 119,614 Class R2 5,000 50,030 12,329 125,897 11,352 118,843 5,525 56,085 5,000 50,436 Class R3 33,990 339,959 26,212 268,562 118,802 1,247,921 35,959 383,143 29,722 313,299 Class R4 5,214 52,171 52,530 532,643 134,660 1,393,818 31,765 342,452 15,789 164,396 Class R5 5,000 50,030 5,000 50,116 5,000 50,322 5,000 50,436 5,000 50,436 - ----------------------------------------------------------------------------------------------------------------------------------- 212,754 $2,126,222 197,297 $2,007,616 722,827 $7,574,108 278,027 $2,955,795 264,208 $2,786,586 Shares issued to shareholders in reinvestment of distributions Class A 656 $6,550 77 $781 462 $4,714 126 $1,295 192 $1,972 Class B 380 3,790 36 359 452 4,609 204 2,096 180 1,847 Class C 171 1,706 28 284 121 1,235 125 1,286 89 913 Class I 124 1,236 40 408 321 3,274 269 2,768 391 4,023 Class R1 121 1,206 27 271 64 650 67 692 68 702 Class R2 102 1,014 31 315 68 694 71 736 72 746 Class R3 214 2,143 32 327 526 5,359 133 1,374 206 2,115 Class R4 113 1,126 371 3,749 1,680 17,153 142 1,464 157 1,620 Class R5 121 1,209 39 395 76 775 79 817 80 827 - ----------------------------------------------------------------------------------------------------------------------------------- 2,002 $19,980 681 $6,889 3,770 $38,463 1,216 $12,528 1,435 $14,765 Shares reacquired Class A -- $-- -- $-- (16,757) $(175,479) (2,119) $(22,808) (28,417) $(300,142) Class B (2) (15) (244) (2,472) (295) (3,134) (953) (10,395) (2,837) (30,501) Class C (2) (15) -- -- (2) (15) -- -- (15) (166) Class I -- -- -- -- -- -- (307) (3,328) (10,807) (118,436) Class R1 (192) (1,917) -- -- -- -- -- -- -- -- Class R2 -- -- (3,664) (37,891) (3,150) (33,987) -- -- -- -- Class R3 (10,129) (101,012) (1,118) (11,472) (2,140) (22,741) (6,246) (67,273) (816) (8,801) Class R4 -- -- -- -- -- -- -- -- (699) (7,488) - ----------------------------------------------------------------------------------------------------------------------------------- (10,325) $(102,959) (5,026) $(51,835) (22,344) $(235,356) (9,625) $(103,804) (43,591) $(465,534) Net change Class A 72,358 $721,958 45,028 $460,242 250,487 $2,655,642 61,797 $660,721 53,956 $578,287 Class B 36,733 367,629 13,278 135,191 93,240 965,703 34,479 363,835 42,074 445,022 Class C 37,860 378,416 9,229 93,509 13,168 135,352 10,298 105,940 7,767 79,595 Class I 5,124 51,266 25,406 257,699 29,811 308,350 63,017 669,079 52,285 545,011 Class R1 12,731 127,304 8,249 83,388 50,673 534,011 27,599 295,710 11,459 120,316 Class R2 5,102 51,044 8,696 88,321 8,270 85,550 5,596 56,821 5,072 51,182 Class R3 24,075 241,090 25,126 257,417 117,188 1,230,539 29,846 317,244 29,112 306,613 Class R4 5,327 53,297 52,901 536,392 136,340 1,410,971 31,907 343,916 15,247 158,528 Class R5 5,121 51,239 5,039 50,511 5,076 51,097 5,079 51,253 5,080 51,263 - ----------------------------------------------------------------------------------------------------------------------------------- 204,431 $2,043,243 192,952 $1,962,670 704,253 $7,377,215 269,618 $2,864,519 222,052 $2,335,817 (c) For the period from the commencement of the fund's investment operations, September 29, 2005, through April 30, 2006. (6) LINE OF CREDIT Each fund and other affiliated funds participate in a $1 billion unsecured line of credit provided by a syndication of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, at a rate equal to the Federal Reserve funds rate plus 0.35%. In addition, a commitment fee, based on the average daily, unused portion of the line of credit, is allocated among the participating funds at the end of each calendar quarter. The commitment fee allocated to each fund for the period ended April 30, 2006, was equal to the following and is included in miscellaneous expense on the Statements of Operations. None of the funds had significant borrowings during the period ended April 30, 2006. MFS LIFETIME RETIREMENT MFS LIFETIME MFS LIFETIME MFS LIFETIME MFS LIFETIME INCOME FUND 2010 FUND 2020 FUND 2030 FUND 2040 FUND $5 $4 $13 $5 $5 REPORT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM To the Board of Trustees of MFS Series Trust XII and Shareholders of MFS Lifetime Funds: We have audited the accompanying statements of assets and liabilities of MFS Lifetime Retirement Income Fund, MFS Lifetime 2010 Fund, MFS Lifetime 2020 Fund, MFS Lifetime 2030 Fund and MFS Lifetime 2040 Fund (the "MFS Lifetime Funds") (the five funds constituting MFS Series Trust XII), including the portfolios of investments, as of April 30, 2006, and the related statements of operations, the statements of changes in net assets, and the financial highlights for the period September 29, 2005 (commencement of operations) through April 30, 2006. These financial statements and financial highlights are the responsibility of the MFS Lifetime Funds' management. Our responsibility is to express an opinion on these financial statements and financial highlights based on our audits. We conducted our audits in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements and financial highlights are free of material misstatement. We were not engaged to perform an audit of the MFS Lifetime Funds' internal control over financial reporting. Our audits included consideration of internal control over financial reporting as a basis for designing audit procedures that are appropriate in the circumstances, but not for the purpose of expressing an opinion on the effectiveness of the MFS Lifetime Funds' internal control over financial reporting. Accordingly, we express no such opinion. An audit also includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements and financial highlights, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. Our procedures included confirmation of securities owned as of April 30, 2006, by correspondence with the custodian and brokers or by other appropriate auditing procedures where replies from brokers were not received. We believe that our audits provide a reasonable basis for our opinion. In our opinion, the financial statements and financial highlights referred to above present fairly, in all material respects, the financial position of the MFS Lifetime Funds at April 30, 2006, the results of their operations, the changes in their net assets, and their financial highlights for the period September 29, 2005 (commencement of operations) through April 30, 2006, in conformity with U.S. generally accepted accounting principles. /s/ ERNST & YOUNG LLP Boston, Massachusetts June 12, 2006 TRUSTEES AND OFFICERS -- IDENTIFICATION AND BACKGROUND The Trustees and officers of the Trust, as of June 1, 2006, are listed below, together with their principal occupations during the past five years. (Their titles may have varied during that period.) The address of each Trustee and officer is 500 Boylston Street, Boston, Massachusetts 02116. POSITION(s) HELD TRUSTEE/OFFICER PRINCIPAL OCCUPATIONS DURING THE PAST FIVE YEARS & NAME, DATE OF BIRTH WITH FUND SINCE(H) OTHER DIRECTORSHIPS(J) - ------------------- ---------------- --------------- ------------------------------------------------------------------- INTERESTED TRUSTEES Robert J. Manning(k) Trustee February 2004 Massachusetts Financial Services Company, Chief Executive Officer, (born 10/20/63) President, Chief Investment Officer and Director Robert C. Pozen(k) Trustee February 2004 Massachusetts Financial Services Company, Chairman (since February (born 08/08/46) 2004); Secretary of Economic Affairs, The Commonwealth of Massachusetts (January 2002 to December 2002); Fidelity Investments, Vice Chairman (June 2000 to December 2001); Fidelity Management & Research Company (investment adviser), President (March 1997 to July 2001); Bell Canada Enterprises (telecommunications), Director; Medtronic, Inc. (medical technology), Director; Telesat (satellite communications), Director INDEPENDENT TRUSTEES J. Atwood Ives Trustee and Chair of February 1992 Private investor; Eastern Enterprises (diversified services (born 05/01/36) Trustees company), Chairman, Trustee and Chief Executive Officer (until November 2000) Robert E. Butler(n) Trustee January 2006 Consultant - regulatory and compliance matters (since July 2002); (born 11/29/41) PricewaterhouseCoopers LLP (professional services firm), Partner (November 2000 until June 2002) Lawrence H. Cohn, M.D. Trustee August 1993 Brigham and Women's Hospital, Senior Cardiac Surgeon, Chief of (born 03/11/37) Cardiac Surgery (until 2005); Harvard Medical School, Professor of Surgery; Brigham and Women's Hospital Physicians' Organization, Chair (2000 to 2004) David H. Gunning Trustee January 2004 Cleveland-Cliffs Inc. (mining products and service provider), Vice (born 05/30/42) Chairman/Director (since April 2001); Encinitos Ventures (private investment company), Principal (1997 to April 2001); Lincoln Electric Holdings, Inc. (welding equipment manufacturer), Director William R. Gutow Trustee December 1993 Private investor and real estate consultant; Capitol Entertainment (born 09/27/41) Management Company (video franchise), Vice Chairman Michael Hegarty Trustee December 2004 Retired; AXA Financial (financial services and insurance), Vice (born 12/21/44) Chairman and Chief Operating Officer (until May 2001); The Equitable Life Assurance Society (insurance), President and Chief Operating Officer (until May 2001) Lawrence T. Perera Trustee July 1981 Hemenway & Barnes (attorneys), Partner (born 06/23/35) J. Dale Sherratt Trustee August 1993 Insight Resources, Inc. (acquisition planning specialists), (born 09/23/38) President; Wellfleet Investments (investor in health care companies), Managing General Partner (since 1993); Cambridge Nutraceuticals (professional nutritional products), Chief Executive Officer (until May 2001) Laurie J. Thomsen Trustee March 2005 Private investor; Prism Venture Partners (venture capital), (born 08/05/57) Co-founder and General Partner (until June 2004); St. Paul Travelers Companies (commercial property liability insurance), Director Robert W. Uek Trustee January 2006 Retired (since 1999); PricewaterhouseCoopers LLP (professional (born 05/18/41) services firm), Partner (until 1999); Consultant to investment company industry (since 2000); TT International Funds (mutual fund complex), Trustee (2000 until 2005); Hillview Investment Trust II Funds (mutual fund complex), Trustee (2000 until 2005) OFFICERS Maria F. Dwyer(k) President November 2005 Massachusetts Financial Services Company, Executive Vice President (born 12/01/58) and Chief Regulatory Officer (since March 2004); Fidelity Management & Research Company, Vice President (prior to March 2004); Fidelity Group of Funds, President and Treasurer (prior to March 2004) Tracy Atkinson(k) Treasurer September 2005 Massachusetts Financial Services Company, Senior Vice President (born 12/30/64) (since September 2004); PricewaterhouseCoopers LLP, Partner (prior to September 2004) Christopher R. Bohane(k) Assistant Secretary July 2005 Massachusetts Financial Services Company, Vice President and Senior (born 1/18/74) and Assistant Clerk Counsel (since April 2003); Kirkpatrick & Lockhart LLP (law firm), Associate (prior to April 2003); Nvest Services Company, Assistant Vice President and Associate Counsel (prior to January 2001) Ethan D. Corey(k) Assistant Secretary July 2005 Massachusetts Financial Services Company, Special Counsel (since (born 11/21/63) and Assistant Clerk December 2004); Dechert LLP (law firm), Counsel (prior to December 2004) David L. DiLorenzo(k) Assistant Treasurer July 2005 Massachusetts Financial Services Company, Vice President (since (born 8/10/68) June 2005); JP Morgan Investor Services, Vice President (January 2001 to June 2005); State Street Bank, Vice President and Corporate Audit Manager (prior to January 2001) Timothy M. Fagan(k) Assistant Secretary September 2005 Massachusetts Financial Services Company, Vice President and Senior (born 7/10/68) and Assistant Clerk Counsel (since September 2005); John Hancock Advisers, LLC, Vice President and Chief Compliance Officer (September 2004 to August 2005), Senior Attorney(prior to September 2004); John Hancock Group of Funds, Vice President and Chief Compliance Officer (September 2004 to December 2004) Mark D. Fischer(k) Assistant Treasurer July 2005 Massachusetts Financial Services Company, Vice President (since (born 10/27/70) May 2005); JP Morgan Investment Management Company, Vice President (prior to May 2005) Ellen Moynihan(k) Assistant Treasurer April 1997 Massachusetts Financial Services Company, Senior Vice President (born 11/13/57) Susan S. Newton(k) Assistant Secretary May 2005 Massachusetts Financial Services Company, Senior Vice President and (born 03/07/50) and Assistant Clerk Associate General Counsel (since April 2005); John Hancock Advisers, LLC, Senior Vice President, Secretary and Chief Legal Officer (prior to April 2005); John Hancock Group of Funds, Senior Vice President, Secretary and Chief Legal Officer (prior to April 2005) Susan A. Pereira(k) Assistant Secretary July 2005 Massachusetts Financial Services Company, Vice President and Senior (born 11/05/70) and Assistant Clerk Counsel (since June 2004); Bingham McCutchen LLP (law firm), Associate (January 2001 to June 2004); Preti, Flaherty, Beliveau, Pachios & Haley, LLC, Associate (prior to January 2001) Mark N. Polebaum(k) Secretary and Clerk January 2006 Massachusetts Financial Services Company, Executive Vice President, (born 05/01/52) General Counsel and Secretary (since January 2006); Wilmer Cutler Pickering Hale and Dorr LLP (law firm), Partner (prior to January 2006) Frank L. Tarantino Independent Chief June 2004 Tarantino LLC (provider of compliance services), Principal (since (born 03/07/44) Compliance Officer June 2004); CRA Business Strategies Group (consulting services), Executive Vice President (April 2003 to June 2004); David L. Babson & Co. (investment adviser), Managing Director, Chief Administrative Officer and Director (February 1997 to March 2003) James O. Yost(k) Assistant Treasurer September 1990 Massachusetts Financial Services Company, Senior Vice President (born 06/12/60) - -------------- (h) Date first appointed to serve as Trustee/officer of an MFS fund. Each Trustee has served continuously since appointment unless indicated otherwise. (j) Directorships or trusteeships of companies required to report to the Securities and Exchange Commission (i.e., "public companies"). (k) "Interested person" of the Trust within the meaning of the Investment Company Act of 1940 (referred to as the 1940 Act), which is the principal federal law governing investment companies like the fund, as a result of position with MFS. The address of MFS is 500 Boylston Street, Boston, Massachusetts 02116. (n) In 2004 and 2005, Mr. Butler provided consulting services to the independent compliance consultant retained by MFS pursuant to its settlement with the SEC concerning market timing and related matters. The terms of that settlement required that compensation and expenses related to the independent compliance consultant be borne exclusively by MFS and, therefore, MFS paid Mr. Butler for the services he rendered to the independent compliance consultant. In 2004 and 2005, MFS paid Mr. Butler a total of $351,119.29. Each Trustee and officer holds office until his or her successor is chosen and qualified or until his or her earlier death, resignation, retirement or removal. Messrs. Butler, Sherratt and Uek and Ms. Thomsen are members of the Trust's Audit Committee. Each of the Trust's Trustees and officers holds comparable positions with certain other funds of which MFS or a subsidiary is the investment adviser or distributor, and, in the case of the officers, with certain affiliates of MFS. As of December 31, 2005, each Trustee served as a board member of 98 funds within the MFS Family of Funds. The Statement of Additional Information contains further information about the Trustees and is available without charge upon request by calling 1-800-225-2606. - ----------------------------------------------------------------------------------------------------------------------------------- INVESTMENT ADVISER CUSTODIAN Massachusetts Financial Services Company State Street Bank and Trust Company 500 Boylston Street, Boston, MA 225 Franklin Street, Boston, MA 02110 02116-3741 INDEPENDENT REGISTERED PUBLIC DISTRIBUTOR ACCOUNTING FIRM MFS Fund Distributors, Inc. Ernst & Young LLP 500 Boylston Street, Boston, MA 200 Clarendon Street, Boston, MA 02116 02116-3741 PORTFOLIO MANAGER Joseph C. Flaherty, Jr. BOARD REVIEW OF INVESTMENT ADVISORY AGREEMENT A discussion regarding the Board's most recent review and renewal of the Fund's investment advisory agreement is available by clicking on the fund's name under "Select a fund" on the MFS Web site (mfs.com). PROXY VOTING POLICIES AND INFORMATION A general description of the MFS funds' proxy voting policies and procedures is available without charge, upon request, by calling 1-800-225-2606, by visiting the Proxy Voting section of mfs.com or by visiting the SEC's Web site at http://www.sec.gov. Information regarding how the fund voted proxies relating to portfolio securities during the most recent twelve-month period ended June 30 is available without charge by visiting the Proxy Voting section of mfs.com or by visiting the SEC's Web site at http://www.sec.gov. QUARTERLY PORTFOLIO DISCLOSURE The fund will file a complete schedule of portfolio holdings with the Securities and Exchange Commission (the Commission) for the first and third quarters of each fiscal year on Form N-Q. The fund's Form N-Q may be reviewed and copied at the: Public Reference Room Securities and Exchange Commission 100 F Street, NE, Room 1580 Washington, D.C. 20549 Information on the operation of the Public Reference Room may be obtained by calling the Commission at 1-202-551-5850. The fund's Form N-Q is available on the EDGAR database on the Commission's Internet Web site at http:// www.sec.gov, and copies of this information may be obtained, upon payment of a duplicating fee, by electronic request at the following e-mail address: publicinfo@sec.gov or by writing the Public Reference Section at the above address. A shareholder can also obtain the quarterly portfolio holdings report at mfs.com. FEDERAL TAX INFORMATION (unaudited) The funds will notify shareholders of amounts for use in preparing 2006 income tax forms in January 2007. The following information is provided pursuant to provisions of the Internal Revenue Code. The funds designate the maximum amount allowable as qualified dividend income eligible for the 15% tax rate. MFS Lifetime 2030 Fund and MFS Lifetime 2040 Fund designate $484 and $2,986, respectively, as capital gain dividends paid during the fiscal year. For corporate shareholders, the percentages of the ordinary income dividends paid during the fiscal year that qualify for the corporate dividends received deduction are as follows: DIVIDENDS RECEIVED DEDUCTIONS MFS Lifetime Retirement Income Fund 5.11% MFS Lifetime 2010 Fund 8.39% MFS Lifetime 2020 Fund 7.58% MFS Lifetime 2030 Fund 14.86% MFS Lifetime 2040 Fund 12.94% CONTACT INFORMATION INVESTOR SERVICE Write to us at: MFS Service Center, Inc. P.O. Box 55824 Boston, MA 02205-5824 Type of Information Phone number Hours, Eastern Time - -------------------------------------------------------------------------------- General information 1-800-225-2606 8 a.m. to 8 p.m., any business day - -------------------------------------------------------------------------------- Speech- or hearing-impaired 1-800-637-6576 9 a.m. to 5 p.m., any business day - -------------------------------------------------------------------------------- Shares prices, account 1-800-MFS-TALK balances exchanges (1-800-637-8255) 24 hours a day, 365 days a or stock and bond outlooks touch-tone required year - -------------------------------------------------------------------------------- M F S(SM) INVESTMENT MANAGEMENT(R) MFS Investment Management(R) MFS(R) investment products are offered through MFS Fund Distributors, Inc., 500 Boylston Street, Boston, MA 02116. LTF-ANN-06/06 1M ITEM 2. CODE OF ETHICS. The Registrant has adopted a Code of Ethics pursuant to Section 406 of the Sarbanes-Oxley Act and as defined in Form N-CSR that applies to the Registrant's principal executive officer and principal financial and accounting officer. The Registrant has not amended any provision in its Code of Ethics (the "Code") that relates to an element of the Code's definitions enumerated in paragraph (b) of Item 2 of this Form N-CSR. ITEM 3. AUDIT COMMITTEE FINANCIAL EXPERT. Messrs. Robert E. Butler and Robert W. Uek and Ms. Laurie J. Thomsen, members of the Audit Committee, have been determined by the Board of Trustees in their reasonable business judgment to meet the definition of "audit committee financial expert" as such term is defined in Form N-CSR. In addition, Messrs. Butler, and Uek and Ms. Thomsen are "independent" members of the Audit Committee (as such term has been defined by the Securities and Exchange Commission in regulations implementing Section 407 of the Sarbanes-Oxley Act of 2002). The Securities and Exchange Commission has stated that the designation of a person as an audit committee financial expert pursuant to this Item 3 on Form N-CSR does not impose on such a person any duties, obligations or liability that are greater than the duties, obligations or liability imposed on such person as a member of the Audit Committee and the Board of Trustees in the absence of such designation or identification. ITEM 4. PRINCIPAL ACCOUNTANT FEES AND SERVICES. ITEMS 4(a) THROUGH 4(d) AND 4(g): The Board of Trustees has appointed Ernst & Young LLP ("E&Y") to serve as independent registered public accounting firm to each series of the Registrant (the series referred to collectively as the "Funds" and singularly as a "Fund"). The tables below set forth the audit fees billed to the Funds as well as fees for non-audit services provided to the Funds and/or to the Funds' investment adviser, Massachusetts Financial Services Company ("MFS") and to various entities either controlling, controlled by, or under common control with MFS that provide ongoing services to the Funds ("MFS Related Entities"). For the fiscal years ended April 30, 2006 and 2005, audit fees billed to the Funds by E&Y were as follows: Audit Fees FEES BILLED BY E&Y: 2006 2005 ---- ---- MFS Lifetime Retirement Income $22,920 NA* Fund MFS Lifetime 2010 Fund 22,920 NA* MFS Lifetime 2020 Fund 22,920 NA* MFS Lifetime 2030 Fund 22,920 NA* MFS Lifetime 2040 Fund 22,920 NA* -------- --- TOTAL $114,600 NA * The Fund commenced operations on September 29, 2005 and therefore no audit fees were billed to the Fund for the period May 1, 2004 through April 30, 2005. For the fiscal years ended April 30, 2006 and 2005, fees billed by E&Y for audit-related, tax and other services provided to the Funds and for audit-related, tax and other services provided to MFS and MFS Related Entities were as follows: Audit-Related Fees(1) Tax Fees(2) All Other Fees(3) FEES BILLED BY E&Y: 2006 2005 2006 2005 2006 2005 ---- ---- ---- ---- ---- ---- To MFS Lifetime $0 NA** $6,880 NA** $0 NA** Retirement Income Fund To MFS Lifetime 2010 Fund 0 NA** 6,880 NA** 0 NA** To MFS Lifetime 2020 Fund 0 NA** 6,880 NA** 0 NA** To MFS Lifetime 2030 Fund 0 NA** 6,880 NA** 0 NA** To MFS Lifetime 2040 Fund 0 NA** 6,880 NA** 0 NA** TOTAL FEES BILLED BY E&Y $0 NA** $34,400 NA** $0 NA** TO ABOVE FUNDS: To MFS and MFS Related $0 $0 $15,500 $0 $581,599 $123,800 Entities of MFS Lifetime Retirement Income Fund* To MFS and MFS Related 0 0 15,500 0 581,599 123,800 Entities of MFS Lifetime 2010 Fund* To MFS and MFS Related 0 0 15,500 0 581,599 123,800 Entities of MFS Lifetime 2020 Fund* To MFS and MFS Related 0 0 15,500 0 581,599 123,800 Entities of MFS Lifetime 2030 Fund* To MFS and MFS Related 0 0 15,500 0 581,599 123,800 Entities of MFS Lifetime 2040 Fund* AGGREGATE FEES FOR NON-AUDIT SERVICES: 2006 2005 ---- ---- To MFS Lifetime Retirement $668,947 $129,300 Income Fund, MFS and MFS Related Entities# To MFS Lifetime 2010 668,947 129,300 Fund, MFS and MFS Related Entities# To MFS Lifetime 2020 668,947 129,300 Fund, MFS and MFS Related Entities# To MFS Lifetime 2030 668,947 129,300 Fund, MFS and MFS Related Entities# To MFS Lifetime 2040 668,947 129,300 Fund, MFS and MFS Related Entities# * This amount reflects the fees billed to MFS and MFS Related Entities for non-audit services relating directly to the operations and financial reporting of the Fund (portions of which services also related to the operations and financial reporting of other funds within the MFS Funds complex). ** The Fund commenced operations on September 29, 2005 and therefore no audit fees were billed to the Fund for the period May 1, 2004 through April 30, 2005. # This amount reflects the aggregate fees billed by E&Y for non-audit services rendered to the Funds and for non-audit services rendered to MFS and the MFS Related Entities. (1) The fees included under "Audit-Related Fees" are fees related to assurance and related services that are reasonably related to the performance of the audit or review of financial statements, but not reported under "Audit Fees," including accounting consultations, agreed-upon procedure reports, attestation reports, comfort letters and internal control reviews. (2) The fees included under "Tax Fees" are fees associated with tax compliance, tax advice and tax planning, including services relating to the filing or amendment of federal, state or local income tax returns, regulated investment company qualification reviews and tax distribution and analysis. (3) The fees included under "All Other Fees" are fees for products and services provided by E&Y other than those reported under "Audit Fees," "Audit-Related Fees" and "Tax Fees," including fees for services related to analysis of fund administrative expenses, compliance program and records management projects. ITEM 4(e)(1): Set forth below are the policies and procedures established by the Audit Committee of the Board of Trustees relating to the pre-approval of audit and non-audit related services: To the extent required by applicable law, pre-approval by the Audit Committee of the Board is needed for all audit and permissible non-audit services rendered to the Funds and all permissible non-audit services rendered to MFS or MFS Related Entities if the services relate directly to the operations and financial reporting of the Registrant. Pre-approval is currently on an engagement-by-engagement basis. In the event pre-approval of such services is necessary between regular meetings of the Audit Committee and it is not practical to wait to seek pre-approval at the next regular meeting of the Audit Committee, pre-approval of such services may be referred to the Chair of the Audit Committee for approval; provided that the Chair may not pre-approve any individual engagement for such services exceeding $50,000 or multiple engagements for such services in the aggregate exceeding $100,000 between such regular meetings of the Audit Committee. Any engagement pre-approved by the Chair between regular meetings of the Audit Committee shall be presented for ratification by the entire Audit Committee at its next regularly scheduled meeting. ITEM 4(e)(2): None, or 0%, of the services relating to the Audit-Related Fees, Tax Fees and All Other Fees paid by the Fund and MFS and MFS Related Entities relating directly to the operations and financial reporting of the Registrant disclosed above were approved by the audit committee pursuant to paragraphs (c)(7)(i)(C) of Rule 2-01 of Regulation S-X (which permits audit committee approval after the start of the engagement with respect to services other than audit, review or attest services, if certain conditions are satisfied). ITEM 4(f): Not applicable. ITEM 4(h): The Registrant's Audit Committee has considered whether the provision by a Registrant's independent registered public accounting firm of non-audit services to MFS and MFS Related Entities that were not pre-approved by the Committee (because such services did not relate directly to the operations and financial reporting of the Registrant) was compatible with maintaining the independence of the independent registered public accounting firm as the Registrant's principal auditors. ITEM 5. AUDIT COMMITTEE OF LISTED REGISTRANTS. Not applicable to the Registrant. ITEM 6. SCHEDULE OF INVESTMENTS A schedule of investments of the Registrant is included as part of the report to shareholders of such series under Item 1 of this Form N-CSR. ITEM 7. DISCLOSURE OF PROXY VOTING POLICIES AND PROCEDURES FOR CLOSED-END MANAGEMENT INVESTMENT COMPANIES. Not applicable to the Registrant. ITEM 8. PORTFOLIO MANAGERS OF CLOSED-END MANAGEMENT INVESTMENT COMPANIES. Not applicable to the Registrant. ITEM 9. PURCHASES OF EQUITY SECURITIES BY CLOSED-END MANAGEMENT INVESTMENT COMPANY AND AFFILIATED PURCHASERS. Not applicable to the Registrant. ITEM 10. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS. There were no material changes to the procedures by which shareholders may send recommendations to the Board for nominees to the Registrant's Board since the Registrant last provided disclosure as to such procedures in response to the requirements of Item 7(d)(2)(ii)(G) of Schedule 14A or this Item. ITEM 11. CONTROLS AND PROCEDURES. (a) Based upon their evaluation of the effectiveness of the registrant's disclosure controls and procedures (as defined in Rule 30a-3(c) under the Investment Company Act of 1940 (the "Act")) as conducted within 90 days of the filing date of this Form N-CSR, the registrant's principal financial officer and principal executive officer have concluded that those disclosure controls and procedures provide reasonable assurance that the material information required to be disclosed by the registrant on this report is recorded, processed, summarized and reported within the time periods specified in the Securities and Exchange Commission's rules and forms. (b) There were no changes in the registrant's internal controls over financial reporting (as defined in Rule 30a-3(d) under the Act) that occurred during the second fiscal quarter of the period covered by the report that have materially affected, or are reasonably likely to materially affect, the registrant's internal control over financial reporting. ITEM 12. EXHIBITS. (a) File the exhibits listed below as part of this Form. Letter or number the exhibits in the sequence indicated. (1) Any code of ethics, or amendment thereto, that is the subject of the disclosure required by Item 2, to the extent that the registrant intends to satisfy the Item 2 requirements through filing of an exhibit: Code of Ethics attached hereto. (2) A separate certification for each principal executive officer and principal financial officer of the registrant as required by Rule 30a-2 under the Act (17 CFR 270.30a-2): Attached hereto. (b) If the report is filed under Section 13(a) or 15(d) of the Exchange Act, provide the certifications required by Rule 30a-2(b) under the Act (17 CFR 270.30a-2(b)), Rule 13a-14(b) or Rule 15d-14(b) under the Exchange Act (17 CFR 240.13a-14(b) or 240.15d-14(b)) and Section 1350 of Chapter 63 of Title 18 of the United States Code (18 U.S.C. 1350) as an exhibit. A certification furnished pursuant to this paragraph will not be deemed "filed" for the purposes of Section 18 of the Exchange Act (15 U.S.C. 78r), or otherwise subject to the liability of that section. Such certification will not be deemed to be incorporated by reference into any filing under the Securities Act of 1933 or the Exchange Act, except to the extent that the registrant specifically incorporates it by reference: Attached hereto. NOTICE A copy of the Amended and Restated Declaration of Trust of the Registrant is on file with the Secretary of State of the Commonwealth of Massachusetts and notice is hereby given that this instrument is executed on behalf of the Registrant by an officer of the Registrant as an officer and not individually and the obligations of or arising out of this instrument are not binding upon any of the Trustees or shareholders individually, but are binding only upon the assets and property of the respective constituent series of the Registrant. SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized. (Registrant) MFS SERIES TRUST XII ------------------------------------------------------------------ By (Signature and Title)* MARIA F. DWYER ----------------------------------------------------- Maria F. Dwyer, President Date: June 23, 2006 ------------- Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated. By (Signature and Title)* MARIA F. DWYER ----------------------------------------------------- Maria F. Dwyer, President (Principal Executive Officer) Date: June 23, 2006 ------------- By (Signature and Title)* TRACY ATKINSON ----------------------------------------------------- Tracy Atkinson, Treasurer (Principal Financial Officer and Accounting Officer) Date: June 23, 2006 ------------- * Print name and title of each signing officer under his or her signature.