Annual Report by Investment Company (Form N-CSR)

Annual Report

November 30, 2021

New York Stock Exchange Symbol: CXH

Letter from the CEO	1
Portfolio composition	2
Management review	4
Performance summary	7
Investment objective, principal investment strategies and principal risks	9
Effects of leverage	19
Portfolio managers' profiles	20
Dividend reinvestment and cash purchase plan	21
Portfolio of investments	22
Statement of assets and liabilities	60
Statement of operations	61
Statements of changes in net assets	62
Statement of cash flows	63
Financial highlights	64
Notes to financial statements	66
Report of independent registered public accounting firm	76
Results of shareholder meeting	78
Trustees and officers	79
Board review of investment advisory agreement	83
Proxy voting policies and information	87
Quarterly portfolio disclosure	87
Further information	87
Information about fund contracts and legal claims	87
Federal tax information	87
MFS® privacy notice	89

Contact information

back cover

LETTER FROM THE CEO

Dear Shareholders:

After experiencing dramatic swings in the early days of the coronavirus pandemic, global equity markets have performed strongly over the past year. Though the speedy development of vaccines brightened the economic and market outlook, uncertainty remains as variants of the virus appear, the effectiveness of vaccines appears to wane over time, and their uneven distribution impacts the developing world.

After having taken aggressive steps to cushion the economic and market fallout related to the virus, some global central banks have begun to recalibrate monetary policy. For example, the U.S. Federal Reserve has begun to taper its bond buying, which has pushed up Treasury yields, particularly on the short end of the yield curve. Fiscal stimulus has been abundant as the U.S. Congress passed a $1.9 trillion COVID-19 relief bill in March and a $1.1 trillion infrastructure bill in November. Along with the high levels of government spending, production and transportation bottlenecks and labor shortages stemming from the pandemic have fueled a rise in inflation.

Since midyear, global economic growth has moderated, with the spread of the Delta and Omicron variants of the coronavirus and a regulatory crackdown in China featuring prominently. Stress in China's property development sector has contributed to a slowdown there. Tightening global energy and raw materials supplies are a further concern for investors.

The policy measures put in place to counteract the pandemic's effects have helped build a supportive environment and are encouraging economic recovery; however, if markets disconnect from fundamentals, they can sow the seeds of instability. As such, recent dramatic increases in speculative trading in cryptocurrencies, special purpose acquisition companies (SPACs), and the like bear watching.

In the aftermath of the crisis, we could see societal changes as households, businesses, and governments adjust to a new reality, and any such alterations could affect the investment landscape. For investors, events such as the COVID-19 outbreak demonstrate the importance of having a deep understanding of company fundamentals, and we have built our global research platform to do just that.

At MFS^®, we put our clients' assets to work responsibly by carefully navigating the increasing complexity of global markets and economies. Guided by our commitment to long-term investing, we tune out the noise and aim to uncover what we believe are the best, most durable investment opportunities in the market. Our unique global investment platform combines collective expertise, long-term discipline, and thoughtful risk management to create sustainable value for investors over time.

Respectfully,

Michael W. Roberge

Chief Executive Officer

MFS Investment Management

January 14, 2022

The opinions expressed in this letter are subject to change and may not be relied upon for investment advice. No forecasts can be guaranteed.

Portfolio structure (i)

(a)

For all securities other than those specifically described below, ratings are assigned to underlying securities utilizing ratings from Moody's, Fitch, and Standard & Poor's rating agencies and applying the following hierarchy: If all three agencies provide a rating, the middle rating (after dropping the highest and lowest ratings) is assigned; if two of the three agencies rate a security, the lower of the two is assigned. If none of the 3 rating agencies above assign a rating, but the security is rated by DBRS Morningstar, then the DBRS Morningstar rating is assigned. If none of the 4 rating agencies listed above rate the security, but the security is rated by the Kroll Bond Rating Agency (KBRA), then the KBRA rating is assigned. Ratings are shown in the S&P and Fitch scale (e.g., AAA). Securities rated BBB or higher are considered investment grade. All ratings are subject to change. Not Rated includes fixed income securities and fixed income derivatives that have not been rated by any rating agency. The fund may or may not have held all of these instruments on this date. The fund is not rated by these agencies.

(b)

Cash & Cash Equivalents (Less Liabilities) includes any cash, investments in money market funds, short-term securities, and other assets less liabilities. Liabilities include the value of the aggregate liquidation preference of the remarketable variable rate munifund term preferred shares (RVMTP shares) issued by the fund. Cash & Cash Equivalents (Less Liabilities) is negative due to the aggregate liquidation value of RVMTP shares. Please see the Statement of Assets and Liabilities for additional information related to the fund's cash position and other assets and liabilities. Please see Note 7 in the Notes to Financial Statements for more information on the RVMTP shares issued by the fund.

(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 due to the interest rate move. This calculation is based on net assets applicable to common shares as of November 30, 2021.

(i)

For purposes of this presentation, the components include the value of securities, and reflect the impact of the equivalent exposure of derivative positions, if any. These amounts may be negative from time to time. Equivalent exposure is a calculated amount that translates the derivative position into a reasonable approximation of the amount of the underlying asset that the portfolio would have to hold at a given point in time to have the same price sensitivity that results from the portfolio's ownership of the derivative contract. When dealing with derivatives, equivalent exposure is a more representative measure of the potential impact of a position on portfolio performance than value. The bond component will include any accrued interest amounts.

(m)

In determining each instrument's effective maturity for purposes of calculating the fund's dollar-weighted average effective maturity, MFS uses the instrument's stated maturity or, if applicable, an earlier date on which MFS believes it is probable that a maturity-shortening device (such as a put, pre-refunding or prepayment) will cause the instrument to be repaid. Such an earlier date can be substantially shorter than the instrument's stated maturity. This calculation is based on gross assets, which consists of net assets applicable to common shares plus the value of preferred shares, as of November 30, 2021.

Other includes equivalent exposure from currency derivatives and/or any offsets to derivative positions and/or the leverage created through the issuance of self-deposited inverse floaters and may be negative.

Percentages are based on net assets applicable to common shares as of November 30, 2021.

The portfolio is actively managed and current holdings may be different.

Management Review

Summary of Results

For the twelve months ended November 30, 2021, common shares of the MFS Investment Grade Municipal Trust (fund) provided a total return of 5.46%, at net asset value and a total return of 7.63%, at market value. This compares with a return of 1.97% for the fund's benchmark, the Bloomberg Municipal Bond Index.

The performance commentary below is based on the net asset value performance of the fund, which reflects the performance of the underlying pool of assets held by the fund. The total return at market value represents the return earned by owners of the shares of the fund, which are traded publicly on the exchange.

Market Environment

Over the past year, the global economy was buffeted by an array of crosscurrents as it adjusted to the ebbs and flows of the pandemic. Among the supportive currents were ample fiscal stimulus, loose monetary policy and the rollout of several highly effective coronavirus vaccines. Negative currents included the rapid spread of several coronavirus variants, widespread global production bottlenecks and a surge in inflation. After experiencing a burst of exceptionally strong economic activity as the global economy began to reopen, growth slowed lately as shortages of raw materials, labor, intermediate goods and even energy in some countries, disrupted supply chains.

Amid rising inflation, markets anticipated a transition from an exceptionally accommodative environment to a more mixed monetary landscape ahead. Indeed, several central banks in emerging markets have already tightened policy and the US Federal Reserve reduced the pace of its asset purchases in November. However, the European Central Bank, the Bank of Japan and the People's Bank of China are expected to maintain accommodative policies. Sovereign bond yields moved modestly higher late in the period amid higher inflation and on expectations of a tighter Fed but slipped lower as the highly-transmissible Omicron variant began to spread at the end of the period.

A harsher Chinese regulatory environment toward industries such as online gaming, food delivery and education increased market volatility as has stress in China's highly leveraged property development sector. Trade relations between the United States and China remained quite strained despite a change in presidential administrations.

Signs of excess investor enthusiasm continued to be seen in pockets of the market such as "meme stocks" popular with users of online message boards, cryptocurrencies and heavy retail participation in the market for short-dated options.

Over the past 12 months, municipal assets continued a rally that had begun in the middle of 2020, supported by the rollout of vaccines, massive amounts of monetary and fiscal support, and a strong economic recovery. Tax receipts avoided worst-case scenarios and, across most states, have fully recovered to 2019 levels this year, bolstering municipal budgets. The economic rebound has benefited revenue-based municipal bonds as well, as demand for education, health care, and travel-related services, among others, returned. Federal funds from fiscal aid packages have gone a long way towards stabilizing liquidity, helping issuers bridge revenue gaps as demand recovers. Improving credit metrics and low distress rates are suggestive of, we believe, further improvement in municipal credit fundamentals. Supply/demand has also been

supportive for municipal asset prices. Total supply of municipal bond issuance has run at higher levels than the five-year average, however taxable municipal issuance makes up a relatively higher percentage of issuance. Supply of tax-exempt issuance has been lower than the historical average at the same time that investor inflows have been at record levels so far this year. Valuations reflect these positive tailwinds, as spreads have returned to pre-pandemic levels, reducing the attractiveness of taking on excess credit risk. While the recovering economy has benefited credit fundamentals, it has also fueled higher interest rates, a trend we expect to continue due to above-trend levels of growth and inflation. Given tight valuations and our expectations for rates to gradually increase, we believe investors should expect subdued returns for municipal assets in 2022.

Factors Affecting Performance

The fund's asset allocation decisions were a primary driver of relative outperformance versus the Bloomberg Municipal Bond Index. From a credit quality perspective, the fund's out-of-benchmark exposure to both non-rated(r) and "BB" rated bonds, and its greater exposure to "BBB" rated securities, contributed to relative performance. From a sector perspective, the fund's greater exposure to bonds within the health care sector strengthened relative results.

Security selection was another key factor that aided relative performance over the reporting period. From a sector perspective, the fund's bond selection within both the health care and education sectors benefited relative results. From a credit quality perspective, favorable bond selection in "AA", "A" and "BBB" rated issuers also supported relative returns.

The fund's positioning along the yield curve(y) was another contributor to relative performance.

The fund employs leverage, which has been created through the issuance of variable rate municipal term preferred shares, remarketable variable rate munifund term preferrred shares, and inverse floaters. To the extent that investments are purchased through the use of leverage, the fund's net asset value may increase or decrease at a greater rate than a comparable unleveraged fund. During the reporting period, the fund's use of leverage benefited relative performance.

Conversely, the fund's longer duration(d) stance weakened relative performance as interest rates generally rose over the reporting period.

Respectfully,

Portfolio Manager(s)
Michael Dawson and Geoffrey Schechter

(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.

(r)

Securities rated "BBB", "Baa", or higher are considered investment grade; securities rated "BB", "Ba", or below are considered non-investment grade. Ratings are assigned to underlying securities utilizing ratings from Moody's, Fitch, and Standard & Poor's and applying the following hierarchy: If all three agencies provide a rating, the middle rating (after dropping the highest and lowest ratings) is assigned; if two of the three agencies rate a security, the lower of the two is assigned. If none of the 3 rating agencies above assign a rating, but the

security is rated by DBRS Morningstar, then the DBRS Morningstar rating is assigned. If none of the 4 rating agencies listed above rate the security, but the security is rated by the Kroll Bond Rating Agency (KBRA), then the KBRA rating is assigned. Ratings are shown in the S&P and Fitch scale (e.g., AAA). For securities that are not rated by any of the rating agencies, the security is considered Not Rated.

(y)	A yield curve graphically depicts the yields of different maturity bonds of the same credit quality and type; a normal yield curve is upward sloping, with short-term rates lower than long-term rates.

The views expressed in this report are those of the portfolio manager(s) 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 or 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.

Performance Summary THROUGH 11/30/21

The following chart illustrates the fund's historical performance in comparison to its benchmark(s). Performance results reflect the percentage change in net asset value and market value, including reinvestment of fund distributions. Benchmarks are unmanaged and may not be invested in directly. Benchmark returns do not reflect commissions or expenses. (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. The performance shown does not reflect the deduction of taxes, if any, that a shareholder would pay on fund distributions or the sale of fund shares.

Growth of a Hypothetical $10,000 Investment

Average Annual Total Returns through 11/30/21

	Inception Date	1-yr	5-yr	10-yr
Market Value (r)	5/16/89	7.63%	5.95%	5.77%
Net Asset Value (r)	5/16/89	5.46%	6.25%	6.71%

Comparative benchmark(s)

Bloomberg Municipal Bond Index (f)	1.97%	4.38%	3.90%

(f)	Source: FactSet Research Systems Inc.
(r)	Includes reinvestment of all distributions. Market value references New York Stock Exchange Price.

Benchmark Definition(s)

Bloomberg Municipal Bond Index^(a) - a market capitalization-weighted index that measures the performance of the tax-exempt bond market.

It is not possible to invest directly in an index.

(a)	Source: Bloomberg Index Services Limited. BLOOMBERG® is a trademark and service mark of Bloomberg Finance L.P. and its affiliates (collectively "Bloomberg"). Bloomberg or Bloomberg's

licensors own all proprietary rights in the Bloomberg Indices. Bloomberg neither approves or endorses this material, or guarantees the accuracy or completeness of any information herein, or makes any warranty, express or implied, as to the results to be obtained therefrom and, to the maximum extent allowed by law, neither shall have any liability or responsibility for injury or damages arising in connection therewith.

Notes to Performance Summary

The fund's shares may trade at a discount or premium to net asset value. When fund shares trade at a premium, buyers pay more than the net asset value underlying fund shares, and shares purchased at a premium would receive less than the amount paid for them in the event of the fund's concurrent liquidation.

The fund's monthly distributions may include a return of capital to shareholders to the extent that distributions are in excess of the fund's net investment income and net capital gains, determined in accordance with federal income tax regulations. Distributions that are treated for federal income tax purposes as a return of capital will reduce each shareholder's basis in his or her shares and, to the extent the return of capital exceeds such basis, will be treated as gain to the shareholder from a sale of shares. Returns of shareholder capital may have the effect of reducing the fund's assets and increasing the fund's expense ratio.

Net asset values and performance results based on net asset value per share do not include adjustments made for financial reporting purposes in accordance with U.S. generally accepted accounting principles and may differ from amounts reported in the Statement of Assets and Liabilities or the Financial Highlights.

A portion of the fund's monthly distributions may be subject to state, federal, and/or alternative minimum tax. Capital gains, if any, are subject to a capital gains tax.

From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.

In accordance with Section 23(c) of the Investment Company Act of 1940, the fund hereby gives notice that it may from time to time repurchase shares of the fund in the open market at the option of the Board of Trustees and on such terms as the Trustees shall determine.

Investment Objective, Principal Investment Strategies and Principal Risks

Investment Objective

The fund's investment objective is to seek high current income exempt from federal income tax, but may also consider capital appreciation. The fund's objective may be changed without shareholder approval.

Principal Investment Strategies

The fund invests, under normal market conditions, at least 80% of its net assets, including assets attributable to preferred shares and borrowings for investment purposes, in tax-exempt bonds and tax-exempt notes. This policy may not be changed without shareholder approval. Tax-exempt bonds and tax-exempt notes are municipal instruments, the interest of which is exempt from federal income tax. Interest from the fund's investments may be subject to the federal alternative minimum tax.

MFS (Massachusetts Financial Services Company, the fund's investment adviser) normally invests at least 80% of the fund's net assets, including assets attributable to preferred shares and borrowings for investment purposes, in investment grade quality debt instruments. In determining the credit quality of debt instruments, MFS will use the following methodology: if three Nationally Recognized Statistical Rating Organizations ("NRSROs") have assigned a rating to a debt instrument, MFS will use the middle rating; if two NRSROs have assigned a rating to a debt instrument, MFS will use the lower rating; if only one NRSRO has assigned a rating to a debt instrument, MFS will use that rating; rating; if none of the three NSROs above assign a rating, but the security is rated by Dominion Bond Rating Service Limited ("DBRS"), then the DBRS rating is assigned. A debt instrument will be considered unrated if none of the NRSROs have assigned a rating.

MFS may also invest in below investment grade quality debt instruments.

MFS may invest 25% or more of the fund's total assets in municipal instruments that finance similar projects, such as those relating to education, healthcare, housing, utilities, water, or sewers. Although MFS seeks to invest the funds' assets in municipal instruments whose interest is exempt from federal personal income tax, MFS may also invest in taxable instruments, including derivatives.

MFS may invest a significant percentage of the fund's assets in issuers in a single state, territory, or possession, or a small number of states, territories, or possessions.

While MFS may use derivatives for any investment purpose, to the extent MFS uses derivatives, MFS expects to use derivatives primarily to increase or decrease exposure to a particular market, segment of the market, or security, to increase or decrease interest rate exposure, or as alternatives to direct investments.

MFS uses an active bottom-up investment approach to buying and selling investments for the fund. Investments are selected primarily based on fundamental analysis of individual instruments and their issuers in light of the issuers' financial condition and market, economic, political, and regulatory conditions. Factors considered may include the instrument's credit quality and terms, any underlying assets and their credit quality,

and the issuer's management ability, capital structure, leverage, and ability to meet its current obligations. MFS may also consider environmental, social, and governance (ESG) factors in its fundamental investment analysis where MFS believes such factors could materially impact the economic value of an issuer or instrument. ESG factors considered may include, but are not limited to, an issuer's governance structure and practices, social issues such as health and safety considerations, and environmental issues such as climate change impact, energy sources, and water and waste management. Quantitative screening tools that systematically evaluate the structure of a debt instrument and its features may also be considered. In structuring the fund, MFS also considers top-down factors, including sector allocations, yield curve positioning, duration, macroeconomic factors, and risk management factors.

The fund uses leverage through the issuance of preferred shares and/or the creation of tender option bonds, and then investing the proceeds pursuant to its investment strategies. If approved by the fund's Board of Trustees, the fund may use leverage by other methods.

MFS may engage in active and frequent trading in pursuing the fund's principal investment strategies.

In response to market, economic, political, or other conditions, MFS may depart from the fund's principal investment strategies by temporarily investing for defensive purposes.

Principal Investment Types

The principal investment types in which the fund may invest are:

Debt Instruments: Debt instruments represent obligations of corporations, governments, and other entities to repay money borrowed, or other instruments believed to have debt-like characteristics. The issuer or borrower usually pays a fixed, variable, or floating rate of interest, and must repay the amount borrowed, usually at the maturity of the instrument. Debt instruments generally trade in the over-the-counter market and can be less liquid than other types of investments, particularly during adverse market and economic conditions. During certain market conditions, debt instruments in some or many segments of the debt market can trade at a negative interest rate (i.e., the price to purchase the debt instrument is more than the present value of expected interest payments and principal due at the maturity of the instrument). Some debt instruments, such as zero coupon bonds or payment-in-kind bonds, do not pay current interest. Other debt instruments, such as certain mortgage-backed securities and other securitized instruments, make periodic payments of interest and/or principal. Some debt instruments are partially or fully secured by collateral supporting the payment of interest and principal.

Municipal Instruments: Municipal instruments are issued by or for states, territories, or possessions of the United States or by their political subdivisions, agencies, authorities, or other government entities, to raise money for a variety of public and private purposes, including general financing for state and local governments, or financing for a specific project or public facility. Municipal instruments include general obligation bonds of municipalities, state or local governments, project or revenue-specific bonds, municipal lease obligations, and prerefunded or escrowed bonds. Municipal instruments may be fully or partially supported by the state or local governments, by the credit of a private issuer, by the current or anticipated revenues

from a specific project or assets, by the issuer's pledge to make annual appropriations for lease payments, or by domestic or foreign entities providing credit support, such as insurance, letters of credit, or guarantees. Many municipal instruments are supported by insurance, which typically guarantees the timely payment of all principal and interest due on the underlying municipal instrument.

Tender Option Bonds: Tender option bonds are created when municipal instruments are transferred to a special purpose trust which issues two classes of certificates. The first class, commonly called floating rate certificates, pays an interest rate that is typically reset weekly based on a specified index. Each holder of a floating rate certificate has the option at specified times, and/or may be required under specified circumstances, to tender its certificate to the issuer or a specified third party acting as agent for the issuer for purchase at the stated amount of the certificate plus accrued interest. The second class, commonly called inverse floaters, pays an interest rate based on the difference between the interest rate earned on the underlying municipal instruments and the interest rate paid on the floating rate certificates after expenses.

Derivatives: Derivatives are financial contracts whose value is based on the value of one or more underlying indicators or the difference between underlying indicators. Underlying indicators may include a security or other financial instrument, asset, interest rate, credit rating, commodity, volatility measure, or index. Derivatives often involve a counterparty to the transaction. Derivatives include futures, forward contracts, options, inverse floating rate instruments, swaps, and certain complex structured securities.

Principal Risks

The yield and share price of the fund will change daily based on changes in interest rates and market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. As with any mutual fund, the fund may not achieve its objective and/or you could lose money on your investment in the fund. An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other governmental agency. The significance of any specific risk to an investment in the fund will vary over time depending on the composition of the fund's portfolio, market conditions, and other factors. You should read all of the risk information below carefully, because any one or more of these risks may result in losses to the fund.

The principal risks of investing in the fund are:

Investment Selection Risk: MFS' investment analysis and its selection of investments may not produce the intended results and/or can lead to an investment focus that results in the fund underperforming other funds with similar investment strategies and/or underperforming the markets in which the fund invests. In addition, MFS or the fund's other service providers may experience disruptions or operating errors that could negatively impact the fund.

Debt Market Risk: Debt markets can be volatile and can decline significantly in response to, or investor perceptions of, issuer, market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions. These conditions can affect a single instrument, issuer, or borrower, a particular type of instrument, issuer, or borrower, a segment of the debt markets, or debt markets generally. Certain changes or events, such as political, social, or economic

developments, including increasing and negative interest rates or the U.S. government's inability at times to agree on a long-term budget and deficit reduction plan (which has in the past resulted and may in the future result in a government shutdown); market closures and/or trading halts; government or regulatory actions, including the imposition of tariffs or other protectionist actions and changes in fiscal, monetary, or tax policies; natural disasters; outbreaks of pandemic and epidemic diseases; terrorist attacks; war; and other geopolitical changes or events can have a dramatic adverse effect on debt markets and may lead to periods of high volatility and reduced liquidity in a debt market or a segment of a debt market.

Interest Rate Risk: The price of a debt instrument typically changes in response to interest rate changes. Interest rates can change in response to the supply and demand for credit, government and/or central bank monetary policy and action, inflation rates, general economic and market conditions, and other factors. In general, the price of a debt instrument falls when interest rates rise and rises when interest rates fall. The current period of historically low interest rates may heighten the risks associated with rising interest rates because there may be a greater likelihood of interest rates increasing and interest rates may increase rapidly. Interest rate risk is generally greater for fixed-rate instruments than floating-rate instruments and for instruments with longer maturities, or that do not pay current interest. In addition, short-term and long-term interest rates do not necessarily move in the same direction or by the same amount. An instrument's reaction to interest rate changes depends on the timing of its interest and principal payments and the current interest rate for each of those time periods. The price of an instrument trading at a negative interest rate responds to interest rate changes like other debt instruments; however, an instrument purchased at a negative interest rate is expected to produce a negative return if held to maturity. To the extent the fund invests in fixed-rate instruments, fluctuations in the market price of such investments may not affect interest income derived from those instruments, but may nonetheless affect the fund's share price, especially if the instrument has a longer maturity.

Credit Risk: The price of a debt instrument depends, in part, on the issuer's or borrower's credit quality or ability to pay principal and interest when due. The price of a debt instrument is likely to fall if an issuer or borrower defaults on its obligation to pay principal or interest, if the instrument's credit rating is downgraded by a credit rating agency, or based on other changes in, or perceptions of, the financial condition of the issuer or borrower. For certain types of instruments, including derivatives, the price of the instrument depends in part on the credit quality of the counterparty to the transaction. For other types of debt instruments, including securitized instruments and some municipal instruments, the price of the debt instrument also depends on the credit quality and adequacy of the underlying assets or collateral as well as whether there is a security interest in the underlying assets or collateral. Enforcing rights, if any, against the underlying assets or collateral may be difficult.

Below investment grade quality debt instruments can involve a substantially greater risk of default or can already be in default, and their values can decline significantly over short periods of time. Below investment grade quality debt instruments are regarded as having predominantly speculative characteristics with respect to capacity to pay interest and principal. Below investment grade quality debt instruments tend to be more

sensitive to adverse news about the issuer, or the market or economy in general, than higher quality debt instruments. The market for below investment grade quality debt instruments can be less liquid, especially during periods of recession or general market decline.

The credit quality of, and the ability to pay principal and interest when due by, an issuer of a municipal instrument depends on the credit quality of the entity supporting the municipal instrument, how essential any services supported by the municipal instrument are, the sufficiency of any revenues or taxes that support the municipal instrument, and/or the willingness or ability of the appropriate government entity to approve any appropriations necessary to support the municipal instrument. In addition, the price of a municipal instrument also depends on its credit quality and ability to meet the credit support obligations of any insurer or other entity providing credit support to a municipal instrument.

Municipal Risk: The price of a municipal instrument can be volatile and significantly affected by adverse tax changes or court rulings, legislative or political changes, market and economic conditions and developments, issuer, industry-specific and other conditions, including as the result of events that cannot be reasonably anticipated or controlled such as social conflict or unrest, labor disruption and natural disasters. Municipal instruments can be less liquid than other types of investments and there may be less publicly available information about the issuers of municipal instruments compared to other issuers. If the Internal Revenue Service or a state taxing authority determines that an issuer of a municipal instrument has not complied with applicable tax requirements, interest from the instrument could become taxable (including retroactively) and the instrument could decline significantly in price. Because many municipal instruments are issued to finance similar projects, especially those relating to education, health care, housing, utilities, and water and sewer, conditions in these industries can significantly affect the fund and the overall municipal market. In addition, changes in the financial condition of an individual municipal insurer can affect the overall municipal market.

Municipal instruments may be more susceptible to downgrades or defaults during economic downturns or similar periods of economic stress, which in turn could affect the market values and marketability of many or all municipal obligations of issuers in a state, U.S. territory, or possession. For example, the novel coronavirus (COVID-19) pandemic has significantly stressed the financial resources of many municipal issuers, which may impair a municipal issuer's ability to meet its financial obligations when due and may adversely impact the value of its bonds, which could negatively impact the performance of the fund. Factors contributing to the economic stress on municipal issuers may include an increase in expenses associated with combatting the COVID-19 pandemic and a decrease in revenues supporting the issuer's bonds due to factors such as lower sales tax revenue as a result of decreased consumer spending, lower income tax revenue due to higher unemployment, and a decrease in the value of collateral backing revenue bonds due to closures and/or curtailment of services and/or changes in consumer behavior. In light of the uncertainty surrounding the magnitude, duration, reach, costs and effects of the COVID-19 pandemic, as well as actions that have been or could be taken by governmental authorities or other third parties, it is difficult to predict the level of financial stress and duration of such stress municipal issuers may experience.

Focus Risk: The fund's performance will be closely tied to the issuer, market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions in the states, territories, and possessions of the United States in which the fund's assets are invested. These conditions include constitutional or statutory limits on an issuer's ability to raise revenues or increase taxes, anticipated or actual budget deficits or other financial difficulties, or changes in the credit quality of municipal issuers in such states, territories, and possessions. If MFS invests a significant percentage of the fund's assets in a single state, territory, or possession, or a small number of states, territories, or possessions, these conditions will have a significant impact on the fund's performance and the fund's performance may be more volatile than the performance of more geographically-diversified funds. A prolonged increase in unemployment or a significant decline in the local and/or national economies, such as the increase in unemployment and economic downturn caused by the COVID-19 pandemic and the costs associated with combatting this pandemic, could result in decreased tax revenues.

Prepayment/Extension Risk: Many types of debt instruments, including mortgage-backed securities, securitized instruments, certain corporate bonds, and municipal housing bonds, and certain derivatives, are subject to the risk of prepayment and/or extension. Prepayment occurs when unscheduled payments of principal are made or the instrument is called or redeemed prior to an instrument's maturity. When interest rates decline, the instrument is called, or for other reasons, these debt instruments may be repaid more quickly than expected. As a result, the holder of the debt instrument may not be able to reinvest the proceeds at the same interest rate or on the same terms, reducing the potential for gain. When interest rates increase or for other reasons, these debt instruments may be repaid more slowly than expected, increasing the potential for loss. In addition, prepayment rates are difficult to predict and the potential impact of prepayment on the price of a debt instrument depends on the terms of the instrument.

Leveraging Risk: If the fund utilizes investment leverage, there can be no assurance that such a leveraging strategy will be successful during any period in which it is employed. The use of leverage is a speculative investment technique that results in greater volatility in the fund's net asset value. To the extent that investments are purchased with the proceeds from the borrowings from a bank, the issuance of preferred shares, or the creation of tender option bonds, the fund's net asset value will increase or decrease at a greater rate than a comparable unleveraged fund. If the investment income or gains earned from the investments purchased with the proceeds from the borrowings from a bank, the issuance of preferred shares, or the creation of tender option bonds, fails to cover the expenses of leveraging, the fund's net asset value is likely to decrease more quickly than if the fund weren't leveraged. In addition, the fund's distributions could be reduced. The fund is currently required under the Investment Company Act of 1940 (the "1940 Act") to maintain asset coverage of 200% on outstanding preferred shares and 300% on outstanding indebtedness. The fund may be required to sell a portion of its investments at a time when it may be disadvantageous to do so in order to redeem preferred shares or to reduce outstanding indebtedness to comply with asset coverage or other restrictions including those imposed by the 1940 Act and the rating agencies that rate the preferred shares. The expenses of leveraging are paid by the holders of common shares. Borrowings from a

bank or preferred shares may have a stated maturity. If this leverage is not extended prior to maturity or replaced with the same or a different form of leverage, distributions to common shareholders may be decreased.

Certain transactions and investment strategies can result in leverage. Because movements in a fund's share price generally correlate over time with the fund's net asset value, the market price of a leveraged fund will also tend to be more volatile than that of a comparable unleveraged fund. The costs of an offering of preferred shares and/or borrowing program would be borne by shareholders.

Under the terms of any loan agreement or of a purchase agreement between the fund and the investor in the preferred shares, as the case may be, the fund may be required to, among other things, limit its ability to pay distributions in certain circumstances, incur additional debts, engage in certain transactions, and pledge some or all of its assets. Such agreements could limit the fund's ability to pursue its investment strategies. The terms of any loan agreement or purchase agreement could be more or less restrictive than those described.

Under guidelines generally required by a rating agency providing a rating for any preferred shares, the fund may be required to, among other things, maintain certain asset coverage requirements, restrict certain investments and practices, and adopt certain redemption requirements relating to preferred shares. Such guidelines or the terms of a purchase agreement between a fund and the investor in the preferred shares could limit the fund's ability to pursue its investment strategies. The guidelines imposed with respect to preferred shares by a rating agency or an investor in the preferred shares could be more or less restrictive than those described.

In addition, the management fee paid to the Adviser is calculated based on net assets, including assets applicable to preferred shares, so the fee will be higher when leverage through the issuance of preferred shares is utilized, which may create an incentive for the Adviser to use leverage through the issuance of preferred shares.

Tender Option Bond Risk: The underlying municipal instruments held by the special purpose trust are sold or distributed in-kind by the trustee if specified events occur, such as a downgrade in the rating of the underlying municipal instruments, a specified decline in the value of the underlying municipal instruments, a failed remarketing of the floating rate certificates, the bankruptcy of the issuer of the underlying municipal instruments and, if the municipal instruments are insured, of both the issuer and the insurer, and the failure of the liquidity provider to pay in accordance with the trust agreement. In the event the trustee sells or distributes in-kind the underlying municipal instruments to pay amounts owed to the floating rate certificate holders, with the remaining amount paid to the inverse floater holders, the fund's leverage will be reduced.

Derivatives Risk: Derivatives can be highly volatile and involve risks in addition to, and potentially greater than, the risks of the underlying indicator(s). Gains or losses from derivatives can be substantially greater than the derivatives' original cost and can sometimes be unlimited. Derivatives can involve leverage. Derivatives can be complex instruments and can involve analysis and processing that differs from that required for other investment types used by the fund. If the value of a derivative does not change as expected relative to the value of the market or other indicator to which the derivative is

intended to provide exposure, the derivative may not have the effect intended. Derivatives can also reduce the opportunity for gains or result in losses by offsetting positive returns in other investments. Derivatives can be less liquid than other types of investments.

Anti-Takeover Provisions Risk: The fund's declaration of trust includes provisions that could limit the ability of other persons or entities to acquire control of the fund, to convert the fund to an open-end fund, or to change the composition of the fund's Board of Trustees. These provisions could reduce the opportunities for shareholders to sell their Common shares at a premium over the then-current market price.

Market Discount/Premium Risk: The market price of Common shares of the fund will be based on factors such as the supply and demand for Common shares in the market and general market, economic, industry, political or regulatory conditions. Whether shareholders will realize gains or losses upon the sale of Common shares of the fund will depend on the market price of Common shares at the time of the sale, not on the fund's net asset value. The market price may be lower or higher than the fund's net asset value. Shares of closed-end funds frequently trade at a discount to their net asset value.

Counterparty and Third Party Risk: Transactions involving a counterparty other than the issuer of the instrument, including clearing organizations, or a third party responsible for servicing the instrument or effecting the transaction, are subject to the credit risk of the counterparty or third party, and to the counterparty's or third party's ability or willingness to perform in accordance with the terms of the transaction. If a counterparty or third party fails to meet its contractual obligations, goes bankrupt, or otherwise experiences a business interruption, the fund could miss investment opportunities, lose value on its investments, or otherwise hold investments it would prefer to sell, resulting in losses for the fund.

Liquidity Risk: Certain investments and types of investments are subject to restrictions on resale, may trade in the over-the-counter market, or may not have an active trading market due to adverse market, economic, industry, political, regulatory, geopolitical, environmental, public health, and other conditions, including investors trying to sell large quantities of a particular investment or type of investment, or lack of market makers or other buyers for a particular investment or type of investment. At times, all or a significant portion of a market may not have an active trading market. Without an active trading market, it may be difficult to value, and it may not be possible to sell, these investments and the fund could miss other investment opportunities and hold investments it would prefer to sell, resulting in losses for the fund. In addition, the fund may have to sell certain of these investments at prices or times that are not advantageous in order to meet redemptions or other cash needs, which could result in dilution of remaining investors' interests in the fund. The prices of illiquid securities may be more volatile than more liquid investments.

Defensive Investing Risk: When MFS invests defensively, different factors could affect the fund's performance and the fund may not achieve its investment objective. In addition, the defensive strategy may not work as intended.

Frequent Trading Risk: Frequent trading increases transaction costs, which may reduce the Fund's return. Frequent trading can also result in the realization of a higher percentage of short-term capital gains and a lower percentage of long-term capital

gains as compared to a fund that trades less frequently. Because short-term capital gains are distributed as ordinary income, this would generally increase your tax liability unless you hold your shares through a tax-advantaged or tax-exempt vehicle.

Investment Restrictions

The Fund has adopted the following policies which cannot be changed without the approval of the holders of a majority of its shares as defined currently in the 1940 Act to be the lesser of (i) 67% or more of the voting securities present at a meeting at which holders of voting securities representing more than 50% of the outstanding voting securities are present or represented by proxy, or (ii) more than 50% of the outstanding voting securities ("Majority Shareholder Vote"). Except for fundamental investment restriction (1), these investment restrictions are adhered to at the time of purchase or utilization of assets; a subsequent change in circumstances will not be considered to result in a violation of policy.

The Fund may not:

(1)	borrow money except to the extent not prohibited by the 1940 Act and exemptive orders granted under such Act.

(2)

underwrite securities issued by other persons, except that all or any portion of the assets of the Fund may be invested in one or more investment companies, to the extent not prohibited by the 1940 Act and exemptive orders granted under such Act, and except insofar as the Fund may technically be deemed an underwriter under the Securities Act of 1933, as amended, in selling a portfolio security.

(3)

issue any senior securities except to the extent not prohibited by the 1940 Act and exemptive orders granted under such Act. For purposes of this restriction, collateral arrangements with respect to any type of swap, option, Forward Contracts and Futures Contracts and collateral arrangements with respect to initial and variation margin are not deemed to be the issuance of a senior security.

(4)	make loans except to the extent not prohibited by the 1940 Act and exemptive orders granted under such Act.

(5)

purchase or sell real estate (excluding securities secured by real estate or interests therein and securities of companies, such as real estate investment trusts, which deal in real estate or interests therein), interests in oil, gas or mineral leases, commodities or commodity contacts (excluding currencies and any type of option, Futures Contracts and Forward Contracts or other derivative instruments whose value is related to commodities or other commodity contracts) in the ordinary course of its business. The Fund reserves the freedom of action to hold and to sell real estate, mineral leases, commodities or commodity contracts (including currencies and any type of option, Futures Contracts and Forward Contracts) acquired as a result of the ownership of securities.

(6)	purchase any securities of an issuer in a particular industry if as a result 25% or more of its total assets (taken at market value at the time of purchase) would be invested in securities of issuers whose principal business activities are in the same industry.

For purposes of fundamental investment restriction (6), investments in securities issued or guaranteed by the U.S. Government or its agencies or instrumentalities and tax-exempt obligations issued or guaranteed by a U.S. territory or possession, a state or local government, or a political subdivision of any of the foregoing, are not considered an investment in any particular industry.

For purposes of fundamental investment restriction (6), investments in other investment companies are not considered an investment in any particular industry and portfolio securities held by an underlying fund in which the Fund may invest are not considered to be securities purchased by the Fund.

For purposes of fundamental investment restriction (6), MFS uses a customized set of industry groups for classifying securities based on classifications developed by third party providers.

Effects of Leverage

The following table is furnished in response to requirements of the Securities and Exchange Commission (the "SEC"). It is designed to, among other things, illustrate the effects of leverage through the use of senior securities, as that term is defined under Section 18 of the Investment Company Act of 1940 (the "1940 Act"), on common share total return, assuming investment portfolio total returns (consisting of income and changes in the value of investments held in a fund's portfolio) of -10%, -5%, 0%, 5% and 10%. The table below assumes the fund's continued use of leverage through Preferred Shares issued and outstanding (currently RVMTP shares) ("leverage"), as applicable, as of November 30, 2021, as a percentage of total assets (including assets attributable to such leverage), the estimated annual effective Preferred Share dividend rate (based on market conditions and other factors as of November 30, 2021), and the annual return that the fund's portfolio would need to experience (net of expenses) in order to cover such costs. The information below does not reflect the fund's possible use of certain other forms of economic leverage through the use of other instruments or transactions not considered to be senior securities under the 1940 Act, if any.

The assumed investment portfolio returns in the table below are hypothetical figures and are not necessarily indicative of the investment portfolio returns experienced or expected to be experienced by the fund. Your actual returns may be greater or less than those appearing below. In addition, the actual dividend rate payable on the Preferred Shares may vary frequently and may be significantly higher or lower than the rate used for the example below.

RVMTP Shares as a Percentage of Total Assets (Including Assets Attributable to Leverage)	32.26%
Estimated Annual Effective RVMTP Shares Dividend Rate	1.00%
Self-Deposited Inverse Floaters as a Percentage of Total Assets (Including Assets Attributable to Leverage)	2.43%
Estimated Annual Effective Interest Expense Rate Payable by Fund on Self-Deposited Inverse Floaters	0.30%
Annual Return Fund Portfolio Must Experience (net of expenses) to Cover Estimated Annual Effective RVMTP Shares Dividend Rate and Interest Expense on Self-Deposited Inverse Floaters	0.33%
Assumed Return on Portfolio (Net of Expenses)	-10.00%	-5.00%	0.00%	5.00%	10.00%
Corresponding Return to Common Shareholder	-15.82%	-8.16%	-0.51%	7.15%	14.81%

The table reflects hypothetical performance of the fund's portfolio and not the actual performance of the fund's common shares, the value of which is determined by market forces and other factors.

Should the fund elect to add additional leverage to its portfolio, any benefits of such additional leverage cannot be fully achieved until the proceeds resulting from the use of such leverage have been received by the fund and invested in accordance with the fund's investment objectives and policies. The fund's willingness to use additional leverage, and the extent to which leverage is used at any time, will depend on many factors.

Portfolio Managers' Profiles

Portfolio Manager	Primary Role	Since	Title and Five Year History
Michael Dawson	Portfolio Manager	2007	Investment Officer of MFS; employed in the investment management area of MFS since 1998.
Geoffrey Schechter	Portfolio Manager	2007	Investment Officer of MFS; employed in the investment management area of MFS since 1993.

Dividend Reinvestment And Cash Purchase Plan

The fund offers a Dividend Reinvestment and Cash Purchase Plan (the "Plan") that allows common shareholders to reinvest either all of the distributions paid by the fund or only the long-term capital gains. Generally, purchases are made at the market price unless that price exceeds the net asset value (the shares are trading at a premium). If the shares are trading at a premium, the fund will issue shares at a price of either the net asset value or 95% of the market price, whichever is greater. You can also buy shares on a quarterly basis in any amount $100 and over. Computershare Trust Company, N.A. (the Transfer Agent for the fund) (the "Plan Agent") will purchase shares under the Plan on the 15th of January, April, July, and October or shortly thereafter. You may obtain a copy of the Plan by contacting the Plan Agent at 1-800-637-2304 any business day from 9 a.m. to 5 p.m. Eastern time or by visiting the Plan Agent's Web site at www.computershare.com/investor.

If shares are registered in your own name, new shareholders will automatically participate in the Plan, unless you have indicated that you do not wish to participate. If your shares are in the name of a brokerage firm, bank, or other nominee, you can ask the firm or nominee to participate in the Plan on your behalf. If the nominee does not offer the Plan, you may wish to request that your shares be re-registered in your own name so that you can participate. There is no service charge to reinvest distributions, nor are there brokerage charges for shares issued directly by the fund. However, when shares are bought on the New York Stock Exchange or otherwise on the open market, each participant pays a pro rata share of the transaction expenses, including commissions. The tax status of dividends and capital gain distributions does not change whether received in cash or reinvested in additional shares - the automatic reinvestment of distributions does not relieve you of any income tax that may be payable (or required to be withheld) on the distributions.

If your shares are held directly with the Plan Agent, you may withdraw from the Plan at any time by contacting the Plan Agent. Please have available the name of the fund and your account number. For certain types of registrations, such as corporate accounts, instructions must be submitted in writing. Please call for additional details. When you withdraw from the Plan, you can receive the value of the reinvested shares in one of three ways: your full shares will be held in your account, the Plan Agent will sell your shares and send the proceeds to you, or you may transfer your full shares to your investment professional who can hold or sell them. Additionally, the Plan Agent will sell your fractional shares and send the proceeds to you.

If you have any questions, contact the Plan Agent by calling 1-800-637-2304, visit the Plan Agent's Web site at www.computershare.com/investor, or by writing to the Plan Agent at P.O. Box 505005, Louisville, KY 40233-5005.

Portfolio of Investments

11/30/21

The Portfolio of Investments is a complete list of all securities owned by your fund. It is categorized by jurisdiction.

Issuer			Shares/Par	Value ($)
Municipal Bonds - 150.1%
Alabama - 1.2%
Birmingham, AL, Airport Authority Rev., BAM, 4%, 7/01/2040		$	40,000	$ 47,152
Birmingham, AL, Special Care Facilities Financing Authority Rev. (Methodist Home for the Aging), 5.25%, 6/01/2025			50,000	51,866
Jefferson County, AL, Sewer Rev. Warrants, Capital Appreciation, Senior Lien, "B", AGM, 0%, 10/01/2026			95,000	82,165
Jefferson County, AL, Sewer Rev. Warrants, Capital Appreciation, Senior Lien, "B", AGM, 0%, 10/01/2029			135,000	95,865
Jefferson County, AL, Sewer Rev. Warrants, Capital Appreciation, Senior Lien, "B", AGM, 0%, 10/01/2034			190,000	95,038
Jefferson County, AL, Sewer Rev. Warrants, Capital Appreciation, Senior Lien, "B", AGM, 0%, 10/01/2035			365,000	170,960
Tuscaloosa County, AL, Industrial Development Authority, Gulf Opportunity Zone (Hunt Refining Project), "A", 4.5%, 5/01/2032 (n)			255,475	275,351
University of South Alabama, Facilities Rev., "A", BAM, 5%, 4/01/2044			170,000	208,701
University of South Alabama, Facilities Rev., "A", BAM, 5%, 4/01/2049			100,000	122,060
				$1,149,158
Arizona - 2.6%
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Great Hearts Academies Project), "A", 5%, 7/01/2036		$	60,000	$ 66,667
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Great Hearts Academies Project), "A", 5%, 7/01/2041			45,000	49,760
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Great Hearts Academies Project), "A", 5%, 7/01/2046			80,000	88,058
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Legacy Traditional Schools Project), 5%, 7/01/2035 (n)			70,000	76,057
Phoenix, AZ, Industrial Development Authority, Education Facility Rev. (Legacy Traditional Schools Project), 5%, 7/01/2045 (n)			80,000	85,785
Pima County, AZ, Industrial Development Authority Education Facility Rev. (American Leadership Academy Project), 5%, 6/15/2047 (n)			165,000	169,144
Pima County, AZ, Industrial Development Authority Education Facility Rev. (American Leadership Academy Project), 4%, 6/15/2051 (n)(w)			120,000	123,297
Pima County, AZ, Industrial Development Authority Education Facility Rev. (American Leadership Academy Project), 5%, 6/15/2052 (n)			145,000	148,642
Salt Verde Financial Corp., AZ, Senior Gas Rev., 5%, 12/01/2032			795,000	1,050,248

Issuer			Shares/Par	Value ($)
Municipal Bonds - continued
Wisconsin - continued
Wisconsin Public Finance Authority Student Housing Rev. (Beyond Boone LLC - Appalachian State University Project), "A", AGM, 5%, 7/01/2054		$	20,000	$ 23,814
Wisconsin Public Finance Authority Student Housing Rev. (Beyond Boone LLC - Appalachian State University Project), "A", AGM, 5%, 7/01/2058			20,000	23,787
Wisconsin Public Finance Authority Student Housing Rev. (University of Hawai'i Foundation Project), "A-1", 4%, 7/01/2061			125,000	133,619
				$3,616,668
Total Municipal Bonds (Identified Cost, $136,476,873)		$ 148,298,360
Bonds - 0.1%
Consumer Services - 0.1%
Toll Road Investors Partnership II LP, Capital Appreciation, "A", NPFG, 0%, 2/15/2045  (n)		$	16,377	$ 4,290
Toll Road Investors Partnership II LP, Capital Appreciation, "B", NPFG, 0%, 2/15/2033  (n)			120,000	68,913
Total Bonds (Identified Cost, $74,674)		$ 73,203
Other Municipal Bonds - 0.1%
Multi-Family Housing Revenue - 0.1%
FRETE 2021 - ML12 Trust, "X-US", FHLMC, 1.219%, 1/25/2041 (i)(n) (Identified Cost, $49,498)		$	375,712	$ 49,522
Other Assets, Less Liabilities - (1.0)%		(949,964)
Remarketable Variable Rate MuniFund Term Preferred Shares (RVMTP shares), at liquidation value of $48,800,000 net of unamortized debt issuance costs of $103,275 (issued by the fund) - (49.3)%	(48,696,725)
Net assets applicable to common shares - 100.0%		$ 98,774,396

(a)	Non-income producing security.
(d)	In default.
(i)	Interest only security for which the fund receives interest on notional principal (Par amount). Par amount shown is the notional principal and does not reflect the cost of the security.
(n)	Securities exempt from registration under Rule 144A of the Securities Act of 1933. These securities may be sold in the ordinary course of business in transactions exempt from registration, normally to qualified institutional buyers. At period end, the aggregate value of these securities was $6,246,744, representing 6.3% of net assets applicable to common shares.
(u)	Underlying security deposited into special purpose trust upon creation of self-deposited inverse floaters.
(w)	When-issued security.

Financial Statements

Statement of Assets and Liabilities

At 11/30/21

This statement represents your fund's balance sheet, which details the assets and liabilities comprising the total value of the fund.

Assets
Investments in unaffiliated issuers, at value (identified cost, $136,601,045)	$148,421,085
Cash	3,140,153
Receivables for
Investments sold	2,905,263
Interest	1,860,297
Other assets	2,018
Total assets	$156,328,816
Liabilities
Payables for
Distributions on common shares	$11,915
When-issued investments purchased	4,993,202
Interest expense and fees	54,493
Payable to the holders of the floating rate certificates	3,674,420
Payable to affiliates
Investment adviser	32,346
Administrative services fee	167
Transfer agent and dividend disbursing costs	287
Payable for independent Trustees' compensation	7
Accrued expenses and other liabilities	90,858
RVMTP shares, at liquidation value of $48,800,000 net of unamortized debt issuance costs of $103,275	48,696,725
Total liabilities	$57,554,420
Net assets applicable to common shares	$98,774,396
Net assets consist of
Paid-in capital - common shares	$85,407,343
Total distributable earnings (loss)	13,367,053
Net assets applicable to common shares	$98,774,396
RVMTP shares, at liquidation value of $48,800,000 net of unamortized debt issuance costs of $103,275 (488 shares issued and outstanding at $100,000 per share)	48,696,725
Net assets including preferred shares	$147,471,121
Common shares of beneficial interest issued and outstanding	9,110,245
Net asset value per common share (net assets of $98,774,396 / 9,110,245 shares of beneficial interest outstanding)	$10.84

See Notes to Financial Statements

Financial Statements

Statement of Operations

Year ended 11/30/21

This statement describes how much your fund earned in investment income and accrued in expenses. It also describes any gains and/or losses generated by fund operations.

Net investment income (loss)
Income
Interest	$5,462,232
Other	25
Total investment income	$5,462,257
Expenses
Management fee	$961,923
Transfer agent and dividend disbursing costs	14,924
Administrative services fee	30,059
Independent Trustees' compensation	6,897
Stock exchange fee	23,741
Custodian fee	5,558
Shareholder communications	14,277
Audit and tax fees	87,399
Legal fees	11,124
Interest expense and fees and amortization of RVMTP shares debt issuance costs	604,148
Miscellaneous	65,651
Total expenses	$1,825,701
Reduction of expenses by investment adviser	(66,859)
Net expenses	$1,758,842
Net investment income (loss)	$3,703,415
Realized and unrealized gain (loss)
Realized gain (loss) (identified cost basis)
Unaffiliated issuers	$610,498
Change in unrealized appreciation or depreciation
Unaffiliated issuers	$634,272
Net realized and unrealized gain (loss)	$1,244,770
Change in net assets from operations	$4,948,185

See Notes to Financial Statements

Financial Statements

Statements of Changes in Net Assets

These statements describe the increases and/or decreases in net assets resulting from operations, any distributions, and any shareholder transactions.

	Year ended
	11/30/21	11/30/20
Change in net assets
From operations
Net investment income (loss)	$3,703,415	$3,839,428
Net realized gain (loss)	610,498	210,145
Net unrealized gain (loss)	634,272	315,645
Change in net assets from operations	$4,948,185	$4,365,218
Distributions to common shareholders	$(4,187,433)	$(4,184,062)
Total change in net assets	$760,752	$181,156
Net assets applicable to common shares
At beginning of period	98,013,644	97,832,488
At end of period	$98,774,396	$98,013,644

See Notes to Financial Statements

Financial Statements

Statement of Cash Flows

Year ended 11/30/21

This statement provides a summary of cash flows from investment activity for the fund.

Cash flows from operating activities:
Change in net assets from operations	$4,948,185
Adjustments to reconcile change in net assets from operations to net cash provided by operating activities:
Purchase of investment securities	(28,481,082)
Proceeds from disposition of investment securities	28,230,235
Realized gain/loss on investments	(610,498)
Unrealized appreciation/depreciation on investments	(634,272)
Net amortization/accretion of income	506,958
Amortization of RVMTP shares debt issuance costs	12,831
Decrease in interest receivable	100,838
Increase in accrued expenses and other liabilities	22,043
Decrease in receivable from investment adviser	153
Increase in other assets	(83)
Decrease in payable for interest expense and fees	(18,312)
Net cash provided by operating activities	$4,076,996
Cash flows from financing activities:
Payment of RVMTP shares debt issuance costs	$(116,106)
Cash receipts from issuance of RVMTP shares, at liquidation value	48,800,000
Cash payments to repurchase Variable Rate Municipal Term Preferred Shares (VMTP shares)	(48,750,000)
Cash distributions paid on common shares	(4,189,253)
Proceeds from partial call of underlying security of special purpose trust	2,519,572
Payment for redemption of floating rate certificates	(1,260,000)
Net cash used by financing activities	$(2,995,787)
Net increase in cash and restricted cash	$1,081,209
Cash and restricted cash:
Beginning of period	$2,058,944
End of period	$3,140,153

Supplemental disclosure of cash flow information:

Cash paid during the year ended November 30, 2021 for interest was $609,629.

See Notes to Financial Statements

Financial Statements

Financial Highlights

The financial highlights table is intended to help you understand the fund's financial performance for the past 5 years. Certain information reflects financial results for a single fund share. The total returns in the table represent the rate that 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.

Common Shares	Year ended
	11/30/21	11/30/20	11/30/19	11/30/18	11/30/17
Net asset value, beginning of period	$10.76	$10.74	$10.14	$10.47	$10.15
Income (loss) from investment operations
Net investment income (loss) (d)	$0.41	$0.42	$0.45	$0.47(c)	$0.48
Net realized and unrealized gain (loss)	0.13	0.06	0.58	(0.36)	0.29
Total from investment operations	$0.54	$0.48	$1.03	$0.11	$0.77
Less distributions declared to common shareholders
From net investment income	$(0.43)	$(0.44)	$(0.43)	$(0.46)	$(0.48)
From net realized gain	(0.03)	(0.02)	-	-	-
Total distributions declared to shareholders	$(0.46)	$(0.46)	$(0.43)	$(0.46)	$(0.48)
Net increase resulting from the tender and repurchase of common shares of beneficial interest	$-	$-	$-	$0.02	$0.03
Net asset value, end of period (x)	$10.84	$10.76	$10.74	$10.14	$10.47
Market value, end of period	$9.87	$9.60	$9.85	$8.81	$9.70
Total return at market value (%)	7.63	2.26	16.96	(4.52)	8.64
Total return at net asset value (%) (j)(r)(s)(x)	5.46	5.12	10.80	1.82(c)	8.25
Ratios (%) (to average net assets applicable to common shares) and Supplemental data:
Expenses before expense reductions (f)	1.84	2.30	2.79	2.88(c)	2.35
Expenses after expense reductions (f)	1.77	2.18	2.69	2.82(c)	2.33
Net investment income (loss)	3.73	3.99	4.24	4.55(c)	4.53
Portfolio turnover	22	27	15	6	13
Net assets at end of period (000 omitted)	$98,774	$98,014	$97,832	$92,357	$103,124
Supplemental Ratios (%):
Ratios of expenses to average net assets applicable to common shares after expense reductions and excluding interest expense and fees (f)(l)	1.16	1.18	1.18	1.21(c)	1.23
Ratios of expenses to average net assets applicable to common and preferred shares after expense reductions and excluding interest expense and fees (f)(l)	0.78	0.78	0.78	0.81(c)	0.87

	Year ended
	11/30/21	11/30/20	11/30/19	11/30/18	11/30/17
Senior Securities:
RVMTP shares	488	-	-	-	-
VMTP shares	-	1,950	1,950	1,950	1,950
Asset coverage per preferred share (k)	$302,407	$75,263	$75,171	$72,362	$77,869
Asset coverage per $1 liquidation preference (v)	$3.02	$3.01	$3.01	$2.89	$3.12
Involuntary liquidation preference per preferred share (m)	$100,000	$25,000	$25,000	$25,000	$25,000
Average market value per preferred share (m)(u)	$100,000	$25,000	$25,000	$25,000	$25,000

(c)	Amount reflects a one-time reimbursement of expenses by the custodian (or former custodian) without which net investment income and performance would be lower and expenses would be higher.
(d)	Per share data is based on average shares outstanding.
(f)	Ratios do not reflect reductions from fees paid indirectly, if applicable.
(j)	Total return at net asset value is calculated using the net asset value of the fund, not the publicly traded price and therefore may be different than the total return at market value.
(k)	Calculated by subtracting the fund's total liabilities (not including liquidation preference of preferred shares) from the fund's total assets and dividing this number by the total number of preferred shares outstanding.
(l)	Interest expense and fees include payments made to the holders of the floating rate certificates, interest expense paid to shareholders of RVMTP and VMTP shares, and amortization of RVMTP and VMTP shares debt issuance costs, as applicable. For the years ended November 30, 2018 and November 30, 2017, the expense ratio also excludes fees and expenses related to the tender and repurchase of a portion of the fund's common shares of beneficial interest.
(m)	Amount excludes accrued unpaid distributions on preferred shares.
(r)	Certain expenses have been reduced without which performance would have been lower.
(s)	From time to time the fund may receive proceeds from litigation settlements, without which performance would be lower.
(u)	Average market value represents the approximate fair value of each of the fund's preferred shares held at period end.
(v)	Calculated by subtracting the fund's total liabilities (not including liquidation preference of preferred shares) from the fund's total assets and dividing by the aggregate liquidation preference of preferred shares outstanding.
(x)	The net asset values and total returns at net asset value have been calculated on net assets which include adjustments made in accordance with U.S. generally accepted accounting principles required at period end for financial reporting purposes.

See Notes to Financial Statements

Notes to Financial Statements

(1) Business and Organization

MFS Investment Grade Municipal Trust (the fund) is organized as a Massachusetts business trust and is registered under the Investment Company Act of 1940, as amended, as a diversified closed-end management investment company.

The fund is an investment company and accordingly follows the investment company accounting and reporting guidance of the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 Financial Services - Investment Companies.

(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 increases and decreases in net assets from operations during the reporting period. Actual results could differ from those estimates. In the preparation of these financial statements, management has evaluated subsequent events occurring after the date of the fund's Statement of Assets and Liabilities through the date that the financial statements were issued. The fund invests primarily in municipal instruments, which generally trade in the over-the-counter market. The value of municipal instruments can be affected by changes in their actual or perceived credit quality. The credit quality of, and the ability to pay principal and interest when due by, an issuer of a municipal instrument depends on the credit quality of the entity supporting the municipal instrument, how essential any services supported by the municipal instrument are, the sufficiency of any revenues or taxes that support the municipal instrument, and/or the willingness or ability of the appropriate government entity to approve any appropriations necessary to support the municipal instrument. Municipal instruments may be supported by insurance which typically guarantees the timely payment of all principal and interest due on the underlying municipal instrument. The value of a municipal instrument can be volatile and significantly affected by adverse tax changes or court rulings, legislative or political changes, changes in specific or general market and economic conditions in the region where the instrument is issued, and the financial condition of municipal issuers and of municipal instrument insurers of which there are a limited number. Also, because many municipal instruments are issued to finance similar projects, conditions in certain industries can significantly affect the fund and the overall municipal market. If the Internal Revenue Service determines an issuer of a municipal instrument has not complied with the applicable tax requirements, interest from the security could become taxable, the security could decline in value, and distributions made by the fund could be taxable to shareholders. The fund invests in high-yield securities rated below investment grade. Investments in below investment grade quality securities can involve a substantially greater risk of default or can already be in default, and their values can decline significantly. Below investment grade quality securities tend to be more sensitive to adverse news about the issuer, or the market or economy in general, than higher quality debt instruments.

Balance Sheet Offsetting - The fund's accounting policy with respect to balance sheet offsetting is that, absent an event of default by the counterparty or a termination of the agreement, the International Swaps and Derivatives Association (ISDA) Master Agreement, or similar agreement, does not result in an offset of reported amounts of

financial assets and financial liabilities in the Statement of Assets and Liabilities across transactions between the fund and the applicable counterparty. The fund's right to setoff may be restricted or prohibited by the bankruptcy or insolvency laws of the particular jurisdiction to which a specific master netting agreement counterparty is subject. Balance sheet offsetting disclosures, to the extent applicable to the fund, have been included in the fund's Significant Accounting Policies note under the captions for each of the fund's in-scope financial instruments and transactions.

Investment Valuations - Debt instruments and floating rate loans, including restricted debt instruments, are generally valued at an evaluated or composite bid as provided by a third-party pricing service. Short-term instruments with a maturity at issuance of 60 days or less may be valued at amortized cost, which approximates market value. Securities and other assets generally valued on the basis of information from a third-party pricing service may also be valued at a broker/dealer bid quotation.

In determining values, third-party pricing services can utilize both transaction data and market information such as yield, quality, coupon rate, maturity, type of issue, trading characteristics, and other market data.

The Board of Trustees has delegated primary responsibility for determining or causing to be determined the value of the 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 the fund's valuation policies and procedures, market quotations are not considered to be readily available for most types of debt instruments and floating rate loans and many types of derivatives. These investments are generally valued at fair value based on information from third-party pricing services. 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 the fund's net asset value, or after the halt 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. The adviser generally relies on third-party 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 the 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 an investment used to determine the fund's net asset value may differ from quoted or published prices for the same investment. There can be no assurance that the fund could obtain the fair value assigned to an investment if it were to sell the investment at the same time at which the fund determines its net asset value per share.

Various inputs are used in determining the value of the fund's assets or liabilities. These inputs are categorized into three broad levels. In certain cases, the inputs used to measure fair value may fall into different levels of the fair value hierarchy. In such cases, an investment's level within the fair value hierarchy is based on the lowest level of input that is significant to the fair value measurement. The fund's assessment of the significance of a particular input to the fair value measurement in its entirety requires

judgment, and considers factors specific to the investment. Level 1 includes unadjusted quoted prices in active markets for identical assets or liabilities. Level 2 includes other significant observable market-based inputs (including quoted prices for similar securities, interest rates, prepayment speed, and credit risk). Level 3 includes unobservable inputs, which may include the adviser's own assumptions in determining the fair value of investments. The following is a summary of the levels used as of November 30, 2021 in valuing the fund's assets and liabilities:

Financial Instruments	Level 1	Level 2	Level 3	Total
Municipal Bonds	$-	$148,347,882	$-	$148,347,882
U.S. Corporate Bonds	-	73,203	-	73,203
Total	$-	$148,421,085	$-	$148,421,085

For further information regarding security characteristics, see the Portfolio of Investments.

Inverse Floaters - The fund invests in municipal inverse floating rate securities in the form of self-deposited secondary market inverse floaters which have variable rates of interest that typically move in the opposite direction of short-term rates. A self-deposited secondary market inverse floater is created when the fund transfers a municipal bond from its portfolio to a special purpose trust ("the trust") and causes the trust to issue (a) inverse floaters to be held by the fund and (b) floating rate certificates to be held by third parties. The floating rate certificates usually pay tax-exempt interest at short-term rates that reset weekly and the holders of those certificates typically have the option to tender at par plus accrued interest.

Self-deposited secondary market inverse floaters are accounted for as secured borrowings, with the municipal bonds transferred to the trust being reflected as fund investments and the amounts owed to floating rate certificate holders being reflected as fund liabilities in the Statement of Assets and Liabilities as "Payable to the holders of the floating rate certificates". The carrying value of that liability as reported in the fund's Statement of Assets and Liabilities approximates its fair value which would be considered level 2 under the fair value hierarchy.

At November 30, 2021, the fund's payable to the holders of the floating rate certificates was $3,674,420 and the related weighted average interest rate on the settled floating rate certificates issued by the trust was 0.30%. For the year ended November 30, 2021, the average payable to the holders of the settled floating rate certificates was $4,034,719 at a weighted average interest rate of 0.33%. Interest expense and fees, which are recorded as incurred, include interest payments made to the holders of the floating rate certificates and associated fees. For the year ended November 30, 2021, the related interest expense and fees amounted to $41,079 which is included in "Interest expense and fees and amortization of RVMTP shares debt issuance costs" in the Statement of Operations.

Statement of Cash Flows - Information on financial transactions which have been settled through the receipt or disbursement of cash or restricted cash is presented in the Statement of Cash Flows. Cash as presented in the fund's Statement of Assets and Liabilities includes cash on hand at the fund's custodian bank and does not include any short-term investments. Restricted cash is presented in the fund's Statement of Assets and Liabilities as restricted cash for uncleared derivatives and/or deposits with brokers for cleared derivatives and represents cash that has been segregated or delivered to cover the fund's collateral or margin obligations under derivative contracts.

The following table provides a reconciliation of cash and restricted cash reported within the Statement of Assets and Liabilities with that shown in the Statement of Cash Flows:

	11/30/21
Cash	$3,140,153
Restricted cash	-
Restricted cash included in deposits with brokers	-
Total cash and restricted cash in the Statement of Cash Flows	$3,140,153

Indemnifications - Under the fund's organizational documents, its officers and Trustees may be indemnified against certain liabilities and expenses arising out of the performance of their duties to the fund. Additionally, in the normal course of business, the fund enters into agreements with service providers that may contain indemnification clauses. The fund's maximum exposure under these agreements is unknown as this would involve future claims that may be made against the fund that have not yet occurred.

Investment Transactions and Income - Investment transactions are recorded on the trade date. Some securities may be purchased or sold on an extended settlement basis, which means that the receipt or delivery of the securities by the fund and related payments occur at a future date, usually beyond the customary settlement period.

Interest income is recorded on the accrual basis. All premium and discount is amortized or accreted for financial statement purposes in accordance with U.S. generally accepted accounting principles. Interest payments received in additional securities are recorded on the ex-interest date in an amount equal to the value of the security on such date.

Debt obligations may be placed on non-accrual status or set to accrue at a rate of interest less than the contractual coupon when the collection of all or a portion of interest has become doubtful. Interest income for those debt obligations may be further reduced by the write-off of the related interest receivables when deemed uncollectible.

The fund may receive proceeds from litigation settlements. Any proceeds received from litigation involving portfolio holdings are reflected in the Statement of Operations in realized gain/loss if the security has been disposed of by the fund or in unrealized gain/loss if the security is still held by the fund. Any other proceeds from litigation not related to portfolio holdings are reflected as other income in the Statement of Operations.

The fund may purchase or sell securities on a when-issued or delayed delivery basis. In these extended settlement transactions, the receipt or delivery of the securities by the fund and related payments occur at a future date, usually beyond the normal settlement period. The price of such security and the date that the security will be settled are generally fixed at the time the transaction is negotiated. The value of the security varies with market fluctuations and for debt securities no interest accrues to the fund until settlement takes place. When the fund sells securities on a when-issued or delayed delivery basis, the fund typically owns or has the right to acquire securities equivalent in kind and amount to the securities sold. Purchase and sale commitments for when-issued or delayed delivery securities are held at carrying amount, which approximates fair value and are categorized as level 2 within the fair value hierarchy, and included in When-issued investments purchased in the Statement of Assets and Liabilities. Losses may arise due to changes in the value of the underlying securities prior to settlement date or if the counterparty does not perform under the contract's

terms, or if the issuer does not issue the securities due to political, economic or other factors. At the time that it enters into a when-issued or delayed delivery transaction, the fund is required to have sufficient cash and/or liquid securities to cover its commitments.

Legal fees and other related expenses incurred to preserve and protect the value of a security owned are added to the cost of the security; other legal fees are expensed. Capital infusions made directly to the security issuer, which are generally non-recurring, incurred to protect or enhance the value of high-yield debt securities, are reported as additions to the cost basis of the security. Costs that are incurred to negotiate the terms or conditions of capital infusions or that are expected to result in a plan of reorganization are reported as realized losses. Ongoing costs incurred to protect or enhance an investment, or costs incurred to pursue other claims or legal actions, are expensed.

Tax Matters and Distributions - The fund intends to qualify as a regulated investment company, as defined under Subchapter M of the Internal Revenue Code, and to distribute all of its taxable and tax-exempt income, including realized capital gains. As a result, no provision for federal income tax is required. The fund's federal tax returns, when filed, will remain subject to examination by the Internal Revenue Service for a three year period. Management has analyzed the fund's tax positions taken on federal and state tax returns for all open tax years and does not believe that there are any uncertain tax positions that require recognition of a tax liability.

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 U.S. 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.

Book/tax differences primarily relate to defaulted bonds, amortization and accretion of debt securities, and non-deductible expenses that result from the treatment of preferred shares as equity for tax purposes.

The tax character of distributions declared to shareholders for the last two fiscal years is as follows:

	Year ended 11/30/21	Year ended 11/30/20
Ordinary income (including any short-term capital gains)	$26,997	$347,065
Tax-exempt income	4,440,258	4,574,026
Long-term capital gains	270,028	149,056
Total distributions	$4,737,283	$5,070,147

The federal tax cost and the tax basis components of distributable earnings were as follows:

As of 11/30/21
Cost of investments	$132,749,371
Gross appreciation	12,126,135
Gross depreciation	(128,841)
Net unrealized appreciation (depreciation)	$ 11,997,294
Undistributed ordinary income	196,661
Undistributed tax-exempt income	802,852
Undistributed long-term capital gain	421,989
Other temporary differences	(51,743)
Total distributable earnings (loss)	$ 13,367,053

(3) Transactions with Affiliates

Investment Adviser - The fund has an investment advisory agreement with MFS to provide overall investment management and related administrative services and facilities to the fund. The management fee is computed daily and paid monthly at an annual rate of 0.65% of the fund's average daily net assets (including the value of preferred shares). The investment adviser has agreed in writing to reduce its management fee to 0.63% of the fund's average daily net assets (including the value of preferred shares). This written agreement will continue until modified by the fund's Board of Trustees, but such agreement will continue at least until November 30, 2022. For the year ended November 30, 2021, this management fee reduction amounted to $29,598, which is included in the reduction of total expenses in the Statement of Operations. The management fee incurred for the year ended November 30, 2021 was equivalent to an annual effective rate of 0.63% of the fund's average daily net assets (including the value of preferred shares).

The investment adviser has agreed in writing to pay a portion of the fund's total annual operating expenses, excluding interest expense on RVMTP shares, taxes, extraordinary expenses, brokerage and transaction costs, other interest expense, and investment-related expenses (including interest expense and fees associated with investments in inverse floating rate instruments), such that total fund operating expenses do not exceed 0.78% annually of the fund's average daily net assets (including the value of preferred shares). This written agreement will continue until modified by the fund's Board of Trustees, but such agreement will continue at least until November 30, 2022. For the year ended November 30, 2021, this reduction amounted to $37,261, which is included in the reduction of total expenses in the Statement of Operations.

Transfer Agent - The fund engages Computershare Trust Company, N.A. ("Computershare") as the sole transfer agent for the fund's common shares. MFS Service Center, Inc. (MFSC) monitors and supervises the activities of Computershare for an agreed upon fee approved by the Board of Trustees. For the year ended November 30, 2021, these fees paid to MFSC amounted to $3,412.

Administrator - MFS provides certain financial, legal, shareholder communications, compliance, and other administrative services to the fund. Under an administrative services agreement, the fund reimburses MFS the costs incurred to provide these services. The fund is charged an annual fixed amount of $17,500 plus a fee based on

average daily net assets (including the value of preferred shares). The administrative services fee incurred for the year ended November 30, 2021 was equivalent to an annual effective rate of 0.0203% of the fund's average daily net assets (including the value of preferred shares).

Trustees' and Officers' Compensation - The fund pays compensation to independent Trustees in the form of a retainer, attendance fees, and additional compensation to Board and Committee chairpersons. The fund does not pay compensation directly to Trustees or officers of the fund who are also officers of the investment adviser, all of whom receive remuneration from MFS for their services to the fund. Certain officers and Trustees of the fund are officers or directors of MFS and MFSC.

(4) Portfolio Securities

For the year ended November 30, 2021, purchases and sales of investments, other than short-term obligations, were as follows:

	Purchases	Sales
U.S. Government securities	$49,455	$-
Non-U.S. Government securities	32,319,527	33,629,851

(5) Shares of Beneficial Interest

The fund's Declaration of Trust permits the Trustees to issue an unlimited number of full and fractional shares of beneficial interest. The fund reserves the right to repurchase shares of beneficial interest of the fund subject to Trustee approval. During the years ended November 30, 2021 and November 30, 2020, there were no transactions in fund shares.

(6) Line of Credit

The fund and certain other funds managed by MFS participate in a $1.25 billion unsecured committed line of credit of which $1 billion is reserved for use by the fund and certain other MFS U.S. funds. The line of credit is provided by a syndicate of banks under a credit agreement. Borrowings may be made for temporary financing needs. Interest is charged to each fund, based on its borrowings, generally at a rate equal to the highest of one month LIBOR, the Federal Funds Effective Rate and the Overnight Bank Funding Rate, plus an agreed upon spread. A commitment fee, based on the average daily, unused portion of the committed line of credit, is allocated among the participating funds. In addition, the fund and other funds managed by MFS have established unsecured uncommitted borrowing arrangements with certain banks for temporary financing needs. Interest is charged to each fund, based on its borrowings, at rates equal to customary reference rates plus an agreed upon spread. For the year ended November 30, 2021, the fund's commitment fee and interest expense were $388 and $0, respectively, and are included in "Interest expense and fees and amortization of RVMTP shares debt issuance costs" in the Statement of Operations.

(7) Preferred Shares

The fund issued a new series of Remarketable Variable Rate MuniFund Term Preferred Shares ("RVMTP shares") in a private placement offering on July 20, 2021. The proceeds from the RVMTP shares were used to fund the redemption of all the fund's 1,950 VMTP shares. Effective July 20, 2021, the fund has 488 shares issued and outstanding of RVMTP shares. The outstanding RVMTP shares are redeemable at the

option of the fund in whole or in part at the liquidation preference of $100,000 per share, plus accumulated and unpaid dividends, but generally solely for the purpose of decreasing the leverage of the fund. The RVMTP shares have a stated maturity date of 2051 but are subject to a mandatory early term redemption date at each 42 month anniversary from the original date of issue of the RVMTP shares, unless the holder(s) of the RVMTP shares agrees to retain the RVMTP shares. Otherwise, the RVMTP shares are subject to mandatory tender for remarketing to another purchaser. In the event the remarketing is unsuccessful, the RVMTP shares would be subject to redemption at the liquidation preference of $100,000 per share, plus accumulated and unpaid dividends. There is no assurance that the term of the RVMTP shares will be extended or that the RVMTP shares will be replaced with any other preferred shares or other form of leverage upon the redemption of the RVMTP shares. Dividends on the RVMTP shares are (and, in the case of the former VMTP shares were) cumulative and reset weekly to a fixed spread against the Securities Industry and Financial Markets Association (SIFMA) Municipal Swap Index. During the year ended November 30, 2021, the dividend rates on the RVMTP shares and the former VMTP shares ranged from 0.97% to 1.26%. For the year ended November 30, 2021, the average dividend rate was 1.12%.

In the fund's Statement of Assets and Liabilities, the RVMTP shares aggregate liquidation preference is shown as a liability since they have a stated mandatory redemption date. Dividends paid on the RVMTP shares and the former VMTP shares are treated as interest expense and recorded as incurred. For the year ended November 30, 2021, interest expense related to the dividends paid on both RVMTP and former VMTP shares amounted to $549,850 and is included in "Interest expense and fees and amortization of RVMTP shares debt issuance costs" in the Statement of Operations. Costs directly related to the issuance of the RVMTP shares are considered debt issuance costs. Debt issuance costs are presented as a direct deduction from the carrying amount of the related debt liability and are amortized into interest expense over the life of the RVMTP shares. The period-end carrying value for the RVMTP shares in the fund's Statement of Assets and Liabilities is its liquidation value less any unamortized debt issuance costs, which approximates its fair value. Its fair value would be considered level 2 under the fair value hierarchy.

Under the terms of a purchase agreement between the fund and the investor in the RVMTP shares, the fund is subject to various investment restrictions. These investment-related requirements are in various respects more restrictive than those to which the fund is otherwise subject in accordance with its investment objectives and policies. In addition, the fund is subject to certain restrictions on its investments imposed by guidelines of the rating agency that rates the RVMTP shares, which guidelines may be changed by the applicable rating agency, in its sole discretion, from time to time. These guidelines may impose asset coverage or portfolio composition requirements that are more stringent than those imposed on the fund by the Investment Company Act of 1940 (the "1940 Act").

The fund is required to maintain certain asset coverage with respect to the RVMTP shares as defined in the fund's governing documents and the 1940 Act. One of a number of asset coverage-related requirements is that the fund is not permitted to declare or pay common share dividends unless immediately thereafter the fund has a minimum asset coverage ratio of 200% with respect to the RVMTP shares after deducting the amount of such common share dividends.

The 1940 Act requires that the preferred shareholders of the fund, voting as a separate class, have the right to elect at least two trustees at all times, and elect a majority of the trustees at any time when dividends on the preferred shares are unpaid for two full years. Unless otherwise required by law or under the terms of the preferred shares, each preferred share is entitled to one vote and preferred shareholders will vote together with common shareholders as a single class.

Leverage involves risks and special considerations for the fund's common shareholders. To the extent that investments are purchased by the fund with proceeds from the issuance of preferred shares, the fund's net asset value will increase or decrease at a greater rate than a comparable unleveraged fund. Changes in the value of the fund's portfolio will be borne entirely by the common shareholders. It is possible that the fund will be required to sell assets at a time when it may be disadvantageous to do so in order to redeem preferred shares to comply with asset coverage or other restrictions including those imposed by the 1940 Act and the rating agency that rates the preferred shares. There is no assurance that the fund's leveraging strategy will be successful.

(8) Impacts of COVID-19

The pandemic related to the global spread of novel coronavirus disease (COVID-19), which was first detected in December 2019, has resulted in significant disruptions to global business activity and the global economy, as well as the economies of individual countries, the financial performance of individual companies and sectors, and the securities and commodities markets in general. Multiple surges in cases globally, the availability and widespread adoption of vaccines, and the emergence of variant strains of the virus continue to create uncertainty as to the future and long-term impacts resulting from the pandemic including impacts to the prices and liquidity of the fund's investments and the fund's performance.

(9) LIBOR Transition

Certain of the fund's investments, including its investments in derivatives, as well as any debt issued by the fund and other contractual arrangements of the fund may be based on reference interest rates such as the London Interbank Offered Rate ("LIBOR"). In 2017, the regulatory authority that oversees financial services firms in the United Kingdom announced plans to transition away from LIBOR by the end of 2021. In March 2021, the administrator of LIBOR announced the extension of the publication of the more commonly used U.S. dollar LIBOR settings to the end of June 2023. Although the full impacts of the transition away from LIBOR are not fully known, the transition may result in, among other things, an increase in volatility or illiquidity of the markets for instruments that currently rely on LIBOR to determine interest rates and this could have an adverse impact on the fund's performance. With respect to the fund's accounting for investments, including its investments in derivatives, as well as any debt issued by the fund and other contractual arrangements of the fund that undergo reference rate-related modifications as a result of the transition, management will rely upon the relief provided by FASB Codification Topic 848 - Reference Rate Reform (Topic 848). The guidance in Topic 848 permits the fund to disregard the GAAP accounting requirements around certain contract modifications resulting from the LIBOR transition such that for contracts considered in scope, the fund can account for those modified contracts as a continuation of the existing contracts. While the cessation of the one-week and two-month U.S. dollar LIBOR tenors along with certain other non-U.S.

Report of Independent Registered Public Accounting Firm

To the Shareholders and the Board of Trustees of MFS Investment Grade Municipal Trust

Opinion on the Financial Statements

We have audited the accompanying statement of assets and liabilities of MFS Investment Grade Municipal Trust (the "Fund"), including the portfolio of investments, as of November 30, 2021, and the related statements of operations and cash flows for the year then ended, the statements of changes in net assets for each of the two years in the period then ended, the financial highlights for each of the five years in the period then ended and the related notes (collectively referred to as the "financial statements"). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Fund at November 30, 2021, the results of its operations and its cash flows for the year then ended, the changes in its net assets for each of the two years in the period then ended and its financial highlights for each of the five years in the period then ended, in conformity with U.S. generally accepted accounting principles.

Basis for Opinion

These financial statements are the responsibility of the Fund's management. Our responsibility is to express an opinion on the Fund's financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) ("PCAOB") and are required to be independent with respect to the Fund in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud. The Fund is not required to have, nor were we engaged to perform, an audit of the Fund's internal control over financial reporting. As part of our audits, we are required to obtain an understanding of internal control over financial reporting but not for the purpose of expressing an opinion on the effectiveness of the Fund's internal control over financial reporting. Accordingly, we express no such opinion.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our procedures included confirmation of securities owned as of November 30, 2021, by correspondence with the custodian and others or by other appropriate auditing procedures where replies from others were not received. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. We believe that our audits provide a reasonable basis for our opinion.

We have served as the auditor of one or more MFS investment companies since 1993.

Boston, Massachusetts
January 14, 2022

Results of Shareholder Meeting (unaudited)

At the annual meeting of shareholders of MFS Investment Grade Municipal Trust, which was held on October 7, 2021, the following actions were taken:

Item 1: To elect the following individuals as Trustees, elected by the holders of common and preferred shares together:

		Number of Shares
Nominee		For		Withheld Authority
John A. Caroselli		6,968,033.848		592,850.000
James W. Kilman, Jr.		6,966,993.848		593,890.000
Clarence Otis, Jr.		6,966,755.188		594,128.660

Item 2: To elect the following individuals as Trustees, elected by the holders of preferred shares only:

		Number of Shares
Nominee		For		Withheld Authority
John P. Kavanaugh		488		0
Laurie J. Thomsen		488		0

Trustees and Officers - Identification and Background

The Trustees and Officers of the Trust, as of January 1, 2022, 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 111 Huntington Avenue, Boston, Massachusetts 02199-7618.

Name, Age

Position(s) Held with Fund

Trustee/Officer Since(h)

Term Expiring

Number of MFS Funds overseen by the Trustee

Principal Occupations During the Past Five Years

Other Directorships During the Past Five Years (j)

INTERESTED TRUSTEES

Michael W. Roberge (k) (age 55)

Trustee

January 2021

2023

135

Massachusetts Financial Services Company, Chairman (since January 2021); Chief Executive Officer (since January 2017); Director; Chairman of the Board (since January 2022); President (until December 2018); Chief Investment Officer (until December 2018)

N/A

INDEPENDENT TRUSTEES

John P. Kavanaugh (age 67)

Trustee and Chair of Trustees

January 2009

2022

135

Private investor

N/A

Steven E. Buller (age 70)

Trustee

February 2014

2023

135

Private investor

N/A

John A. Caroselli (age 67)

Trustee

March 2017

2024

135

Private investor; JC Global Advisors, LLC (management consulting), President (since 2015)

N/A

Maureen R. Goldfarb (age 66)

Trustee

January 2009

2022

135

Private investor

N/A

Peter D. Jones (age 66)

Trustee

January 2019

2023

135

Private investor

N/A

James W. Kilman, Jr. (age 60)

Trustee

January 2019

2024

135

Burford Capital Limited (finance and investment management), Senior Advisor (since May 3, 2021), Chief Financial Officer (2019-May 2, 2021); KielStrand Capital LLC (family office), Chief Executive Officer (since 2016)

Alpha-En Corporation, Director (2016-2019)

Name, Age

Position(s) Held with Fund

Trustee/Officer Since(h)

Term Expiring

Number of MFS Funds overseen by the Trustee

Principal Occupations During the Past Five Years

Other Directorships During the Past Five Years (j)

Clarence Otis, Jr. (age 65)

Trustee

March 2017

2024

135

Private investor

VF Corporation, Director; Verizon Communications, Inc., Director; The Travelers Companies, Director

Maryanne L. Roepke (age 65)

Trustee

May 2014

2022

135

Private investor

N/A

Laurie J. Thomsen (age 64)

Trustee

March 2005

2022

135

Private investor

The Travelers Companies, Director; Dycom Industries, Inc., Director

Name, Age		Position(s) Held with Fund		Trustee/Officer Since(h)		Term Expiring		Number of MFS Funds overseen by the Trustee		Principal Occupations During the Past Five Years
OFFICERS
Christopher R. Bohane (k) (age 47)		Assistant Secretary and Assistant Clerk		July 2005		N/A		135		Massachusetts Financial Services Company, Senior Vice President and Associate General Counsel
Kino Clark (k) (age 53)		Assistant Treasurer		January 2012		N/A		135		Massachusetts Financial Services Company, Vice President
John W. Clark, Jr. (k) (age 54)		Assistant Treasurer		April 2017		N/A		135		Massachusetts Financial Services Company, Vice President (since March 2017); Deutsche Bank (financial services), Department Head - Treasurer's Office (until February 2017)
Thomas H. Connors (k) (age 62)		Assistant Secretary and Assistant Clerk		September 2012		N/A		135		Massachusetts Financial Services Company, Vice President and Senior Counsel
David L. DiLorenzo (k) (age 53)		President		July 2005		N/A		135		Massachusetts Financial Services Company, Senior Vice President

Name, Age		Position(s) Held with Fund		Trustee/Officer Since(h)		Term Expiring		Number of MFS Funds overseen by the Trustee		Principal Occupations During the Past Five Years
Heidi W. Hardin (k) (age 54)		Secretary and Clerk		April 2017		N/A		135		Massachusetts Financial Services Company, Executive Vice President and General Counsel (since March 2017); Harris Associates (investment management), General Counsel (until January 2017)
Brian E. Langenfeld (k) (age 48)		Assistant Secretary and Assistant Clerk		June 2006		N/A		135		Massachusetts Financial Services Company, Vice President and Senior Counsel
Amanda S. Mooradian (k) (age 42)		Assistant Secretary and Assistant Clerk		September 2018		N/A		135		Massachusetts Financial Services Company, Assistant Vice President and Senior Counsel
Susan A. Pereira (k) (age 51)		Assistant Secretary and Assistant Clerk		July 2005		N/A		135		Massachusetts Financial Services Company, Vice President and Assistant General Counsel
Kasey L. Phillips (k) (age 51)		Assistant Treasurer		September 2012		N/A		135		Massachusetts Financial Services Company, Vice President
Matthew A. Stowe (k) (age 47)		Assistant Secretary and Assistant Clerk		October 2014		N/A		135		Massachusetts Financial Services Company, Vice President and Assistant General Counsel
Martin J. Wolin (k) (age 54)		Chief Compliance Officer		July 2015		N/A		135		Massachusetts Financial Services Company, Senior Vice President and Chief Compliance Officer
James O. Yost (k) (age 61)		Treasurer		September 1990		N/A		135		Massachusetts Financial Services Company, Senior Vice President

(h)	Date first appointed to serve as Trustee/Officer of an MFS Fund. Each Trustee has served continuously since appointment unless indicated otherwise. From January 2012 through December 2016, Messrs. DiLorenzo and Yost served as Treasurer and Deputy Treasurer of the Funds, respectively.

(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 a position with MFS. The address of MFS is 111 Huntington Avenue, Boston, Massachusetts 02199-7618.

The Trust holds annual shareholder meetings for the purpose of electing Trustees, and Trustees are elected for fixed terms. Two Trustees (Mr. Kavanaugh and Ms. Thomsen), each holding a term of one year, are elected annually by holders of the Trust's preferred shares. The remaining Trustees are currently divided into three classes, each having a term of three years which term expires on the date of the third annual meeting following the election to office of the Trustee's class. Each year the term of one class expires. Each Trustee and officer will serve until next elected or his or her earlier death, resignation, retirement or removal. Mr. Roberge was appointed as a Trustee effective January 1, 2021. Under the terms of the Board's retirement policy, an Independent Trustee shall retire at the end of the calendar year in which he or she reaches the earlier of 75 years of age or 15 years of service on the Board (or, in the case of any Independent Trustee who joined the Board prior to 2015, 20 years of service on the Board).

Messrs. Buller, Kilman and Otis and Ms. Roepke are members of the Trust's Audit Committee.

Each of the Interested Trustees and certain Officers hold comparable officer positions with certain affiliates of MFS.

Investment Adviser	Custodian
Massachusetts Financial Services Company 111 Huntington Avenue Boston, MA 02199-7618	State Street Bank and Trust Company 1 Lincoln Street Boston, MA 02111-2900

Portfolio Manager(s)	Independent Registered Public Accounting Firm
Michael Dawson Geoffrey Schechter	Ernst & Young LLP 200 Clarendon Street Boston, MA 02116

Board Review of Investment Advisory Agreement

MFS Investment Grade Municipal Trust

The Investment Company Act of 1940 requires that both the full Board of Trustees and a majority of the non-interested ("independent") Trustees, voting separately, annually approve the continuation of the Fund's investment advisory agreement with MFS. The Trustees consider matters bearing on the Fund and its advisory arrangements at their meetings throughout the year, including a review of performance data at each regular meeting. In addition, the independent Trustees met several times by videoconference (in accordance with Securities and Exchange Commission relief) over the course of three months beginning in May and ending in July, 2021 ("contract review meetings") for the specific purpose of considering whether to approve the continuation of the investment advisory agreement for the Fund and the other investment companies that the Board oversees (the "MFS Funds"). The independent Trustees were assisted in their evaluation of the Fund's investment advisory agreement by independent legal counsel, from whom they received separate legal advice and with whom they met separately from MFS during various contract review meetings. The independent Trustees were also assisted in this process by an independent consultant who was retained by and reported to the independent Trustees.

In connection with their deliberations regarding the continuation of the investment advisory agreement, the Trustees, including the independent Trustees, considered such information and factors as they believed, in light of the legal advice furnished to them and their own business judgment, to be relevant. The investment advisory agreement for the Fund was considered separately, although the Trustees also took into account the common interests of all MFS Funds in their review. As described below, the Trustees considered the nature, quality, and extent of the various investment advisory, administrative, and shareholder services performed by MFS under the existing investment advisory agreement and other arrangements with the Fund.

In connection with their contract review meetings, the Trustees received and relied upon materials that included, among other items: (i) information provided by Broadridge Financial Solutions, Inc. ("Broadridge"), an independent third party, on the investment performance (based on net asset value) of the Fund for various time periods ended December 31, 2020 and the investment performance (based on net asset value) of a group of funds with substantially similar investment classifications/objectives (the "Broadridge performance universe"), (ii) information provided by Broadridge on the Fund's advisory fees and other expenses and the advisory fees and other expenses of comparable funds identified by Broadridge as well as all other funds in the same investment classification/category (the "Broadridge expense group and universe"), (iii) information provided by MFS on the advisory fees of portfolios of other clients of MFS, including institutional separate accounts and other clients, (iv) information as to whether and to what extent applicable expense waivers, reimbursements or fee "breakpoints" are observed for the Fund, (v) information regarding MFS' financial results and financial condition, including MFS' and certain of its affiliates' estimated profitability from services performed for the Fund and the MFS Funds as a whole, and compared to MFS' institutional business, (vi) MFS' views regarding the outlook for the mutual fund industry and the strategic business plans of MFS, (vii) descriptions of various functions performed by MFS for the Funds, such as compliance monitoring and

portfolio trading practices, and (viii) information regarding the overall organization of MFS, including information about MFS' senior management and other personnel providing investment advisory, administrative and other services to the Fund and the other MFS Funds. The comparative performance, fee and expense information prepared and provided by Broadridge was not independently verified and the independent Trustees did not independently verify any information provided to them by MFS.

The Trustees' conclusion as to the continuation of the investment advisory agreement was based on a comprehensive consideration of all information provided to the Trustees and not the result of any single factor. Some of the factors that figured particularly in the Trustees' deliberations are described below, although individual Trustees may have evaluated the information presented differently from one another, giving different weights to various factors. It is also important to recognize that the fee arrangements for the Fund and other MFS Funds are the result of years of review and discussion between the independent Trustees and MFS, that certain aspects of such arrangements may receive greater scrutiny in some years than in others, and that the Trustees' conclusions may be based, in part, on their consideration of these same arrangements during the course of the year and in prior years.

Based on information provided by Broadridge and MFS, the Trustees reviewed the Fund's total return investment performance as well as the Broadridge performance universe over various time periods. The Trustees placed particular emphasis on the total return performance of the Fund's common shares in comparison to the performance of funds in its Broadridge performance universe over the five-year period ended December 31, 2020, which the Trustees believed was a long enough period to reflect differing market conditions. The total return performance of the Fund's common shares ranked 18th out of a total of 54 funds in the Broadridge performance universe for this five-year period (a ranking of first place out of the total number of funds in the performance universe indicating the best performer and a ranking of last place out of the total number of funds in the performance universe indicating the worst performer). The total return performance of the Fund's common shares ranked 31st out of a total of 54 funds for the one-year period and 19th out of a total of 54 funds for the three-year period ended December 31, 2020. Given the size of the Broadridge performance universe and information previously provided by MFS regarding differences between the Fund and other funds in its Broadridge performance universe, the Trustees also reviewed the Fund's performance in comparison to the Bloomberg Barclays Municipal Bond Index. The Fund outperformed the Bloomberg Barclays Municipal Bond Index for each of the one-, three-, and five-year periods ended December 31, 2020 (one-year: 6.4% total return for the Fund versus 5.2% total return for the benchmark; three-year: 5.9% total return for the Fund versus 4.6% total return for the benchmark; five-year: 5.3% total return for the Fund versus 3.9% total return for the benchmark). Because of the passage of time, these performance results may differ from the performance results for more recent periods, including those shown elsewhere in this report.

In the course of their deliberations, the Trustees took into account information provided by MFS in connection with the contract review meetings, as well as during investment review meetings conducted with portfolio management personnel during the course of

the year regarding the Fund's performance. After reviewing these and related factors, the Trustees concluded, within the context of their overall conclusions regarding the investment advisory agreement, that they were satisfied with MFS' responses and efforts relating to investment performance.

In assessing the reasonableness of the Fund's advisory fee, the Trustees considered, among other information, the Fund's advisory fee and the total expense ratio of the Fund's common shares as a percentage of average daily net assets (including the value of preferred shares) and the advisory fee and total expense ratios of the Broadridge expense group based on information provided by Broadridge. The Trustees considered that MFS has agreed in writing to reduce its advisory fee, and that MFS currently observes an expense limitation for the Fund, each of which may not be changed without the Trustees' approval. The Trustees also considered that, according to the data provided by Broadridge (which takes into account any fee reductions or expense limitations that were in effect during the Fund's last fiscal year), the Fund's effective advisory fee rate and total expense ratio were each approximately at the Broadridge expense group median.

The Trustees also considered the advisory fees charged by MFS to any institutional separate accounts advised by MFS ("separate accounts") and unaffiliated investment companies for which MFS serves as subadviser ("subadvised funds") that have comparable investment strategies to the Fund, if any. In comparing these fees, the Trustees considered information provided by MFS as to the generally broader scope of services provided by MFS to the Fund, as well as the more extensive regulatory burdens imposed on MFS in managing the Fund, in comparison to separate accounts and subadvised funds.

The Trustees considered that, as a closed-end fund, the Fund is unlikely to experience meaningful asset growth. As a result, the Trustees did not view the potential for realization of economies of scale as the Fund's assets grow to be a material factor in their deliberations. The Trustees noted that they would consider economies of scale in the future in the event the Fund experiences significant asset growth, such as through a material increase in the market value of the Fund's portfolio securities.

The Trustees also considered information prepared by MFS relating to MFS' costs and profits with respect to the Fund, the MFS Funds considered as a group, and other investment companies and accounts advised by MFS, as well as MFS' methodologies used to determine and allocate its costs to the MFS Funds, the Fund and other accounts and products for purposes of estimating profitability.

After reviewing these and other factors described herein, the Trustees concluded, within the context of their overall conclusions regarding the investment advisory agreement, that the advisory fees charged to the Fund represent reasonable compensation in light of the services being provided by MFS to the Fund.

In addition, the Trustees considered MFS' resources and related efforts to continue to retain, attract and motivate capable personnel to serve the Fund. The Trustees also considered current and developing conditions in the financial services industry, including the presence of large and well-capitalized companies which are spending, and appear to be prepared to continue to spend, substantial sums to engage personnel and to provide services to competing investment companies. In this regard, the Trustees

also considered the financial resources of MFS and its ultimate parent, Sun Life Financial Inc. The Trustees also considered the advantages and possible disadvantages to the Fund of having an adviser that also serves other investment companies as well as other accounts.

The Trustees also considered the nature, quality, cost, and extent of administrative services provided to the Fund by MFS under agreements other than the investment advisory agreement. The Trustees also considered the nature, extent and quality of certain other services MFS performs or arranges for on the Fund's behalf, which may include securities lending programs, directed expense payment programs, class action recovery programs, and MFS' interaction with third-party service providers, principally custodians and sub-custodians. The Trustees concluded that the various non-advisory services provided by MFS and its affiliates on behalf of the Fund were satisfactory.

The Trustees considered so-called "fall-out benefits" to MFS such as reputational value derived from serving as investment manager to the MFS Funds. The Trustees also considered that MFS discontinued its historic practice of obtaining investment research from portfolio brokerage commissions paid by certain MFS Funds effective January 2018, and directly pays or voluntarily reimburses a Fund, if applicable, for the costs of external research acquired through the use of the Fund's portfolio brokerage commissions.

Based on their evaluation of factors that they deemed to be material, including those factors described above, the Board of Trustees, including the independent Trustees, concluded that the Fund's investment advisory agreement with MFS should be continued for an additional one-year period, commencing August 1, 2021.

Proxy Voting Policies and Information

MFS votes proxies on behalf of the fund pursuant to proxy voting policies and procedures that are available without charge, upon request, by calling 1-800-225-2606, by visiting mfs.com/proxyvoting, 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 by August 31 of each year without charge by visiting mfs.com/proxyvoting, or by visiting the SEC's Web site at http://www.sec.gov.

Quarterly Portfolio Disclosure

The fund files a complete schedule of portfolio holdings with the SEC for the first and third quarters of each fiscal year as an exhibit to its reports on Form N-PORT. The fund's Form N-PORT reports are available on the SEC's Web site at http://www.sec.gov. A shareholder can obtain the portfolio holdings report for the first and third quarters of the fund's fiscal year at mfs.com/closedendfunds by choosing the fund's name and then scrolling to the "Resources" section and clicking on the "Prospectus and Reports" tab.

Further Information

From time to time, MFS may post important information about the fund or the MFS Funds on the MFS Web site (mfs.com). This information is available at https://www.mfs.com/announcements or at mfs.com/closedendfunds by choosing the fund's name and then scrolling to the "Resources" section and clicking on the "Announcements" tab, if any.

Additional information about the fund (e.g., performance, dividends and the fund's price history) is also available at mfs.com/closedendfunds by choosing the fund's name, if any.

INFORMATION ABOUT FUND CONTRACTS AND LEGAL CLAIMS

The fund has entered into contractual arrangements with an investment adviser, administrator, transfer agent, and custodian who each provide services to the fund. Unless expressly stated otherwise, shareholders are not parties to, or intended beneficiaries of these contractual arrangements, and these contractual arrangements are not intended to create any shareholder right to enforce them against the service providers or to seek any remedy under them against the service providers, either directly or on behalf of the fund.

Under the Trust's By-Laws, any claims asserted against or on behalf of the MFS Funds, including claims against Trustees and Officers, must be brought in state and federal courts located within the Commonwealth of Massachusetts.

Federal Tax Information (unaudited)

The fund will notify shareholders of amounts for use in preparing 2021 income tax forms in January 2022. The following information is provided pursuant to provisions of the Internal Revenue Code.

The fund designates $298,000 as capital gain dividends paid during the fiscal year.

Federal Tax Information (unaudited) - continued

Of the dividends paid from net investment income during the fiscal year, 99.40% is designated as exempt interest dividends for federal income tax purposes. If the fund has earned income on private activity bonds, a portion of the dividends paid may be considered a tax preference item for purposes of computing a shareholder's alternative minimum tax.

The fund intends to pass through the maximum amount allowable as Section 163(j) Interest Dividends as defined in Treasury Regulation §1.163(j)-1(b).

FACTS

WHAT DOES MFS DO WITH YOUR PERSONAL INFORMATION?

Why?

Financial companies choose how they share your personal information. Federal law gives consumers the right to limit some but not all sharing. Federal law also requires us to tell you how we collect, share, and protect your personal information. Please read this notice carefully to understand what we do.

What?	The types of personal information we collect and share depend on the product or service you have with us. This information can include:
• Social Security number and account balances
• Account transactions and transaction history
• Checking account information and wire transfer instructions
When you are no longer our customer, we continue to share your information as described in this notice.

How?	All financial companies need to share customers' personal information to run their everyday business. In the section below, we list the reasons financial companies can share their customers' personal information; the reasons MFS chooses to share; and whether you can limit this sharing.

Reasons we can share your personal information	Does MFS share?	Can you limit this sharing?
For our everyday business purposes - such as to process your transactions, maintain your account(s), respond to court orders and legal investigations, or report to credit bureaus	Yes	No
For our marketing purposes - to offer our products and services to you	No	We don't share
For joint marketing with other financial companies	No	We don't share
For our affiliates' everyday business purposes - information about your transactions and experiences	No	We don't share
For our affiliates' everyday business purposes - information about your creditworthiness	No	We don't share
For nonaffiliates to market to you	No	We don't share

Questions?

Call 800-225-2606 or go to mfs.com.

Who we are
Who is providing this notice?	MFS Funds, MFS Investment Management, MFS Institutional Advisors, Inc., and MFS Heritage Trust Company.

What we do
How does MFS protect my personal information?	To protect your personal information from unauthorized access and use, we use security measures that comply with federal law. These measures include procedural, electronic, and physical safeguards for the protection of the personal information we collect about you.
How does MFS collect my personal information?	We collect your personal information, for example, when you
• open an account or provide account information
• direct us to buy securities or direct us to sell your securities
• make a wire transfer
We also collect your personal information from others, such as credit bureaus, affiliates, or other companies.
Why can't I limit all sharing?	Federal law gives you the right to limit only
• sharing for affiliates' everyday business purposes - information about your creditworthiness
• affiliates from using your information to market to you
• sharing for nonaffiliates to market to you
State laws and individual companies may give you additional rights to limit sharing.