UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

FORM N-CSR

CERTIFIED SHAREHOLDER REPORT OF REGISTERED
MANAGEMENT INVESTMENT COMPANIES

Investment Company Act File Number: 811-04441

T. Rowe Price GNMA Fund

(Exact name of registrant as specified in charter)

100 East Pratt Street, Baltimore, MD 21202

(Address of principal executive offices)

David Oestreicher

100 East Pratt Street, Baltimore, MD 21202

(Name and address of agent for service)

Registrant’s telephone number, including area code: (410) 345-2000

Date of fiscal year end: May 31

Date of reporting period: May 31, 2016

The views and opinions in this report were current as of May 31, 2016. They are not guarantees of performance or investment results and should not be taken as investment advice. Investment decisions reflect a variety of factors, and the managers reserve the right to change their views about individual stocks, sectors, and the markets at any time. As a result, the views expressed should not be relied upon as a forecast of the fund’s future investment intent. The report is certified under the Sarbanes-Oxley Act, which requires mutual funds and other public companies to affirm that, to the best of their knowledge, the information in their financial reports is fairly and accurately stated in all material respects.

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The U.S. economy grew at a moderate pace during the past 12 months, and the housing market continued to improve. The Federal Reserve raised short-term rates in December but continued to reinvest in its holdings of mortgage-backed securities (MBS). Intermediate- and long-term interest rates fell over the course of the 12-month reporting period as the U.S. Treasury yield curve flattened. GNMAs and other agency MBS underperformed the broader U.S. investment-grade fixed income market on a total return basis as lower yields raised prepayment concerns.

The GNMA Fund returned 1.63% over the 12 months ended May 31, 2016. As shown in the Performance Comparison table, the fund outperformed the Lipper GNMA Funds Average while lagging the Barclays U.S. GNMA Index. After nearly flat results in the first half of our fiscal year, all of the fund’s gains came in the most recent six months.

The U.S. economy grew 2.4% in 2015 before slowing to a 0.8% annualized pace in the first quarter of 2016, according to the most recent estimate. Initial reports point to a pickup in the second quarter, and we expect a return to a growth rate of about 2% over the balance of the year. Labor market growth was generally solid, although the pace slowed in recent months. The unemployment rate declined from 5.5% to 4.7% during the past 12 months, reaching the lowest level since November 2007. Employers added an average of 200,000 new jobs a month, and average hourly earnings increased 2.5%. However, payroll growth slowed over the last three months, which included very weak numbers for May that were released after the end of our reporting period. The housing market appears solid, with home prices increasing at a sustainable rate while the percentage of delinquent or foreclosed loans has been trending lower.

Inflation stayed below the Fed’s 2% target amid the steep decline in oil prices. Headline inflation was 1.0% in the 12-month period ended May 31. The consumer price index (CPI) was held down by a 10% drop in the energy category. Oil prices plunged more than 50% from May 2015 to early this year amid a supply glut; prices have recovered somewhat in recent months as the dollar has weakened and expectations grew that oil-exporting nations will reduce production. Core CPI (which excludes volatile food and energy prices) has moved closer to the Fed’s target, rising 2.2% over the most recent 12 months.

In December, the Federal Reserve raised the federal funds target rate to a range of 0.25% to 0.50% after keeping it near zero for seven years. The Fed noted “considerable improvement in labor market conditions” and also expressed confidence that inflation would rise to its 2% target. The Fed’s statement following its December policy meeting was supportive for the MBS market. The central bank reassured MBS investors by saying that it will continue to reinvest principal payments from its holdings of MBS until interest rate normalization “is well under way.” The Fed has paused further rate increases thus far in 2016 due to the slowdown in economic activity in the first quarter and lingering global risks.

The yield on the 10-year U.S. Treasury note—which best approximates the maturity of GNMAs and other MBS—declined from 2.12% to 1.84% during the period but was volatile as expectations regarding the Fed’s rate hike plans and investor perception of the health of the economy went through several readjustments. The 10-year yield reached a high point near 2.50% in June as concerns about the possibility of an imminent rate increase grew. It then dipped through October during a risk-averse environment that resulted from worries about a slowdown in global growth, but it rebounded as the market priced in the Fed rate hike that occurred in December, finishing 2015 at 2.27%. At the beginning of 2016, risk aversion again became a dominant theme, benefiting safe-haven investments, and the 10-year yield decreased sharply, falling to a 12-month low of 1.53% in mid-February. Yields drifted higher at the close of the period amid some positive economic data and Fed communications that raised expectations for another rate hike in the near term.

MBS were supported over the past year by the strengthening housing market, the Fed’s decision to continue to reinvest in its mortgage portfolio, and demand from foreign buyers searching for positive yield in an environment where an increasing number of developed markets were offering minimal or negative rates. However, lower Treasury yields have begun to weigh on the asset class relative to other fixed income sectors. Lower yields can trigger increased levels of prepayments on the mortgages backing MBS, hurting their values. While MBS underperformed the broader U.S. investment-grade bond market over the past year on a total return basis, mortgage returns were less volatile than other parts of the bond market and provided greater compensation for that relative volatility in performance returns.

Our out-of-benchmark mortgage credit positions detracted from relative results during the period, while security selection and sector allocation decisions were generally beneficial. CMBS investments were selected to diversify holdings as prepayment risk increased, but they were a modest drag on performance.

Our overweight positioning in mortgages that benefit more from falling interest rates contributed to the fund’s overall relative returns. These longer-term holdings witnessed a larger appreciation as investors continued to look for higher-yielding and liquid assets in the current low-rate environment. The fund also benefited from holdings in older mortgage loan pools that have had early chances to refinance and now tend to provide investors with a more stable flow of income. Similarly, other positions that have a smaller loan balance provided additional protection against the risk of higher refinancing activity. These borrowers see a smaller monthly savings from interest rate moves and generate higher income levels for investors.

The portfolio’s duration was shorter at the end of our fiscal year than it was 12 months ago as we saw increasing value in less-liquid shorter-duration subsectors amid market dislocations in the first quarter of 2016. However, in recent months we have moved the duration longer, which we believe will provide the fund with better protection if rates fall further and mortgage refinancings increase.

Liquidity and strong credit quality are key characteristics of agency MBS that continue to appeal to fixed income investors. We structure the portfolio to provide shareholders with the most attractive low-risk opportunities in the market. Balancing the cost of liquidity against the risk level is an integral part of our investment and risk-monitoring process. The management team also uses internally and externally developed quantitative tools to track and manage the risk profile of the portfolio as market conditions change. As the securities in our sector are backed by the U.S. government, we believe this segment of the fixed income market is appealing amid the uncertainty in global markets.

While the U.S. economy has not been sheltered from the global headwinds, it has suffered a much smaller toll than other regions. Following a weak first quarter, we expect a return to 2% to 2¼% annual growth over the balance of the year, with low risk of recession this year. With wages rising and gasoline prices low, a decline in the savings rate to its longer-term average could result in stronger consumer spending. As household formation picks up, a faster housing recovery could also lift growth.

Even as the labor market tightens, we expect the Fed to take advantage of below-target inflation and proceed with unprecedented caution before deciding on further rate increases, taking time to assess the impact of each step in the process of normalizing the stance of monetary policy. The Fed is aware of the economy’s increasing vulnerability as underlying resilience fades in the latter stages of the business cycle. Additionally, we expect global demand for U.S. bonds to persist as U.S. yields are among the highest across developed markets where near-zero or negative rates have become common.

We believe that the fundamentals of the MBS market are positive, though a continued decline in the 10-year Treasury yield may bring prepayment concerns back into focus. While MBS appear fairly valued relative to Treasuries, we see value opportunities within the sector. Moreover, the higher yields and liquidity of MBS relative to some other fixed income sectors are attractive. The biggest risk to the sector would be a change in monetary policy that would lead the Fed to start reducing its reinvestments of principal payments on its MBS holdings sooner than is currently expected. However, this seems unlikely before 2017. Security selection is still critical, and we will continue to rely heavily on our extensive team of analysts, who provide careful, fundamental research on individual bonds.

The committee chairman has day-to-day responsibility for managing the portfolio and works with committee members in developing and executing the fund’s investment program.

Even though principal and interest payments on GNMAs are guaranteed, an increase in interest rates can cause the share price to decline, resulting in a loss of principal. Investors in bond funds are also subject to several other types of risk—interest rate risk, credit risk, prepayment risk, extension risk, and derivatives risk. Since the fund invests primarily in GNMAs, which are backed by the full faith and credit of the U.S. government, its exposure to credit risk is low. A mortgage-backed bond, unlike most other bonds, can be hurt when interest rates fall because homeowners tend to refinance and prepay principal. Prepayments can cause the average maturity of the portfolio to shorten, require the fund to reinvest proceeds at lower interest rates, or even cause certain bonds’ prices to fall below what the fund paid for them, resulting in a capital loss. Increased interest rates can cause the fund’s average maturity to lengthen unexpectedly due to a drop in mortgage prepayments. Shareholders are also exposed to derivatives risk, the potential that our investments in these complex and volatile instruments could affect the fund’s share price.

Asset-backed securities: Bonds whose payments are backed by a pool of receivables or other financial assets.

Barclays U.S. GNMA Index: Tracks the performance of mortgage-backed pass-through securities of the Government National Mortgage Association (GNMA).

Collateralized mortgage obligation: Bonds backed by mortgage pass-throughs whose cash flows are directed in different ways to different classes. Some classes may have less risk associated with prepayments, and, by default, the other classes will have more prepayment risk.

Commercial mortgage-backed securities (CMBS): Bonds backed by loans on commercial rather than residential properties.

Consumer price index: A measure of the average change over time in the prices paid by urban consumers for a representative basket of goods and services.

Duration: A measure of a bond fund’s sensitivity to changes in interest rates. For example, a fund with a duration of five years would fall about 5% in price in response to a one-percentage-point rise in interest rates, and vice versa.

Federal funds rate: The interest rate charged on overnight loans of reserves by one financial institution to another in the U.S. The Federal Reserve sets a target federal funds rate to affect the level and direction of market rates.

Lipper averages: The averages of available mutual fund performance returns for specified time periods in categories defined by Lipper Inc.

Mortgage-backed securities (MBS): Bonds backed by loans on residential properties. Mortgage lenders pool individual home mortgages to back a certificate or bond, which entitles the holder to a proportionate share of the principal and interest payments that are made on the underlying pool of mortgage loans.

SEC yield (30-day): A method of calculating a fund’s yield that assumes all portfolio securities are held until maturity. Yield will vary and is not guaranteed.

Total return: The annual rate of return on a bond, taking into account interest income, plus appreciation or depreciation. If a bond is held to maturity, its total return equals its yield to maturity.

Weighted average maturity: A measure of a fund’s interest rate sensitivity. In general, the longer the average maturity, the greater the fund’s sensitivity to interest rate changes. The weighted average maturity may take into account the interest rate readjustment dates for certain securities. Money funds must maintain a weighted average maturity of less than 60 days.

Yield curve: A graphic depiction of the relationship between yields and maturity dates for a set of similar securities. A security with a longer maturity usually has a higher yield. If a short-term security offers a higher yield, then the curve is said to be “inverted.” If short- and long-term bonds are offering equivalent yields, then the curve is said to be “flat.”

This chart shows the value of a hypothetical $10,000 investment in the fund over the past 10 fiscal year periods or since inception (for funds lacking 10-year records). The result is compared with benchmarks, which may include a broad-based market index and a peer group average or index. Market indexes do not include expenses, which are deducted from fund returns as well as mutual fund averages and indexes.

As a mutual fund shareholder, you may incur two types of costs: (1) transaction costs, such as redemption fees or sales loads, and (2) ongoing costs, including management fees, distribution and service (12b-1) fees, and other fund expenses. The following example is intended to help you understand your ongoing costs (in dollars) of investing in the fund and to compare these costs with the ongoing costs of investing in other mutual funds. The example is based on an investment of $1,000 invested at the beginning of the most recent six-month period and held for the entire period.

Actual Expenses
The first line of the following table (Actual) provides information about actual account values and expenses based on the fund’s actual returns. You may use the information on this line, together with your account balance, to estimate the expenses that you paid over the period. Simply divide your account value by $1,000 (for example, an $8,600 account value divided by $1,000 = 8.6), then multiply the result by the number on the first line under the heading “Expenses Paid During Period” to estimate the expenses you paid on your account during this period.

Hypothetical Example for Comparison Purposes
The information on the second line of the table (Hypothetical) is based on hypothetical account values and expenses derived from the fund’s actual expense ratio and an assumed 5% per year rate of return before expenses (not the fund’s actual return). You may compare the ongoing costs of investing in the fund with other funds by contrasting this 5% hypothetical example and the 5% hypothetical examples that appear in the shareholder reports of the other funds. The hypothetical account values and expenses may not be used to estimate the actual ending account balance or expenses you paid for the period.

Note: T. Rowe Price charges an annual account service fee of $20, generally for accounts with less than $10,000. The fee is waived for any investor whose T. Rowe Price mutual fund accounts total $50,000 or more; accounts electing to receive electronic delivery of account statements, transaction confirmations, prospectuses, and shareholder reports; or accounts of an investor who is a T. Rowe Price Preferred Services, Personal Services, or Enhanced Personal Services client (enrollment in these programs generally requires T. Rowe Price assets of at least $100,000). This fee is not included in the accompanying table. If you are subject to the fee, keep it in mind when you are estimating the ongoing expenses of investing in the fund and when comparing the expenses of this fund with other funds.

You should also be aware that the expenses shown in the table highlight only your ongoing costs and do not reflect any transaction costs, such as redemption fees or sales loads. Therefore, the second line of the table is useful in comparing ongoing costs only and will not help you determine the relative total costs of owning different funds. To the extent a fund charges transaction costs, however, the total cost of owning that fund is higher.

T. Rowe Price GNMA Fund (the fund), is registered under the Investment Company Act of 1940 (the 1940 Act) as a diversified, open-end management investment company. The fund incepted on November 26, 1985. The fund seeks high current income consistent with high overall credit quality and moderate price fluctuation by investing at least 80% of its total assets in Government National Mortgage Association securities backed by the full faith and credit of the U.S. government.

Basis of Preparation The fund is an investment company and follows accounting and reporting guidance in the Financial Accounting Standards Board (FASB) Accounting Standards Codification Topic 946 (ASC 946). The accompanying financial statements were prepared in accordance with accounting principles generally accepted in the United States of America (GAAP), including, but not limited to, ASC 946. GAAP requires the use of estimates made by management. Management believes that estimates and valuations are appropriate; however, actual results may differ from those estimates, and the valuations reflected in the accompanying financial statements may differ from the value ultimately realized upon sale or maturity.

Investment Transactions, Investment Income, and Distributions Income and expenses are recorded on the accrual basis. Premiums and discounts on debt securities are amortized for financial reporting purposes. Paydown gains and losses are recorded as an adjustment to interest income. Dividends received from mutual fund investments are reflected as dividend income; capital gain distributions, if any, are reflected as realized gain/loss. Dividend income and capital gain distributions are recorded on the ex-dividend date. Income tax-related interest and penalties, if incurred, would be recorded as income tax expense. Investment transactions are accounted for on the trade date. Realized gains and losses are reported on the identified cost basis. Income distributions are declared daily and paid monthly. Distributions to shareholders are recorded on the ex-dividend date. Capital gain distributions, if any, are generally declared and paid by the fund annually.

New Accounting Guidance In May 2015, FASB issued ASU No. 2015-07, Fair Value Measurement (Topic 820), Disclosures for Investments in Certain Entities That Calculate Net Asset Value per Share (or Its Equivalent). The ASU removes the requirement to categorize within the fair value hierarchy all investments for which fair value is measured using the net asset value per share practical expedient and amends certain disclosure requirements for such investments. The ASU is effective for interim and annual reporting periods beginning after December 15, 2015. Adoption will have no effect on the fund’s net assets or results of operations.

The fund’s financial instruments are valued and its net asset value (NAV) per share is computed at the close of the New York Stock Exchange (NYSE), normally 4 p.m. ET, each day the NYSE is open for business.

Fair Value The fund’s financial instruments are reported at fair value, which GAAP defines as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. The T. Rowe Price Valuation Committee (the Valuation Committee) has been established by the fund’s Board of Trustees (the Board) to ensure that financial instruments are appropriately priced at fair value in accordance with GAAP and the 1940 Act. Subject to oversight by the Board, the Valuation Committee develops and oversees pricing-related policies and procedures and approves all fair value determinations. Specifically, the Valuation Committee establishes procedures to value securities; determines pricing techniques, sources, and persons eligible to effect fair value pricing actions; oversees the selection, services, and performance of pricing vendors; oversees valuation-related business continuity practices; and provides guidance on internal controls and valuation-related matters. The Valuation Committee reports to the Board and has representation from legal, portfolio management and trading, operations, risk management, and the fund’s treasurer.

Various valuation techniques and inputs are used to determine the fair value of financial instruments. GAAP establishes the following fair value hierarchy that categorizes the inputs used to measure fair value:

Level 1 – quoted prices (unadjusted) in active markets for identical financial instruments that the fund can access at the reporting date

Level 2 – inputs other than Level 1 quoted prices that are observable, either directly or indirectly (including, but not limited to, quoted prices for similar financial instruments in active markets, quoted prices for identical or similar financial instruments in inactive markets, interest rates and yield curves, implied volatilities, and credit spreads)

Observable inputs are developed using market data, such as publicly available information about actual events or transactions, and reflect the assumptions that market participants would use to price the financial instrument. Unobservable inputs are those for which market data are not available and are developed using the best information available about the assumptions that market participants would use to price the financial instrument. GAAP requires valuation techniques to maximize the use of relevant observable inputs and minimize the use of unobservable inputs. When multiple inputs are used to derive fair value, the financial instrument is assigned to the level within the fair value hierarchy based on the lowest-level input that is significant to the fair value of the financial instrument. Input levels are not necessarily an indication of the risk or liquidity associated with financial instruments at that level but rather the degree of judgment used in determining those values.

Valuation Techniques Debt securities generally are traded in the over-the-counter (OTC) market. Securities with remaining maturities of one year or more at the time of acquisition are valued at prices furnished by dealers who make markets in such securities or by an independent pricing service, which considers the yield or price of bonds of comparable quality, coupon, maturity, and type, as well as prices quoted by dealers who make markets in such securities. Securities with remaining maturities of less than one year at the time of acquisition generally use amortized cost in local currency to approximate fair value. However, if amortized cost is deemed not to reflect fair value or the fund holds a significant amount of such securities with remaining maturities of more than 60 days, the securities are valued at prices furnished by dealers who make markets in such securities or by an independent pricing service. Generally, debt securities are categorized in Level 2 of the fair value hierarchy; however, to the extent the valuations include significant unobservable inputs, the securities would be categorized in Level 3.

Investments in mutual funds are valued at the mutual fund’s closing NAV per share on the day of valuation and are categorized in Level 1 of the fair value hierarchy. Financial futures contracts are valued at closing settlement prices and are categorized in Level 1 of the fair value hierarchy. Assets and liabilities other than financial instruments, including short-term receivables and payables, are carried at cost, or estimated realizable value, if less, which approximates fair value.

Thinly traded financial instruments and those for which the above valuation procedures are inappropriate or are deemed not to reflect fair value are stated at fair value as determined in good faith by the Valuation Committee. The objective of any fair value pricing determination is to arrive at a price that could reasonably be expected from a current sale. Financial instruments fair valued by the Valuation Committee are primarily private placements, restricted securities, warrants, rights, and other securities that are not publicly traded.

Subject to oversight by the Board, the Valuation Committee regularly makes good faith judgments to establish and adjust the fair valuations of certain securities as events occur and circumstances warrant. For instance, in determining the fair value of troubled or thinly traded debt instruments, the Valuation Committee considers a variety of factors, which may include, but are not limited to, the issuer’s business prospects, its financial standing and performance, recent investment transactions in the issuer, strategic events affecting the company, market liquidity for the issuer, and general economic conditions and events. In consultation with the investment and pricing teams, the Valuation Committee will determine an appropriate valuation technique based on available information, which may include both observable and unobservable inputs. The Valuation Committee typically will afford greatest weight to actual prices in arm’s length transactions, to the extent they represent orderly transactions between market participants, transaction information can be reliably obtained, and prices are deemed representative of fair value. However, the Valuation Committee may also consider other valuation methods such as a discount or premium from market value of a similar, freely traded security of the same issuer; discounted cash flows; yield to maturity; or some combination. Fair value determinations are reviewed on a regular basis and updated as information becomes available, including actual purchase and sale transactions of the issue. Because any fair value determination involves a significant amount of judgment, there is a degree of subjectivity inherent in such pricing decisions, and fair value prices determined by the Valuation Committee could differ from those of other market participants. Depending on the relative significance of unobservable inputs, including the valuation technique(s) used, fair valued securities may be categorized in Level 2 or 3 of the fair value hierarchy.

Valuation Inputs The following table summarizes the fund’s financial instruments, based on the inputs used to determine their fair values on May 31, 2016:

There were no material transfers between Levels 1 and 2 during the year ended May 31, 2016.

During the year ended May 31, 2016, the fund invested in derivative instruments. As defined by GAAP, a derivative is a financial instrument whose value is derived from an underlying security price, foreign exchange rate, interest rate, index of prices or rates, or other variable; it requires little or no initial investment and permits or requires net settlement. The fund invests in derivatives only if the expected risks and rewards are consistent with its investment objectives, policies, and overall risk profile, as described in its prospectus and Statement of Additional Information. The fund may use derivatives for a variety of purposes, such as seeking to hedge against declines in principal value, increase yield, invest in an asset with greater efficiency and at a lower cost than is possible through direct investment, or to adjust portfolio duration and credit exposure. The risks associated with the use of derivatives are different from, and potentially much greater than, the risks associated with investing directly in the instruments on which the derivatives are based. The fund at all times maintains sufficient cash reserves, liquid assets, or other SEC-permitted asset types to cover its settlement obligations under open derivative contracts.

The fund values its derivatives at fair value and recognizes changes in fair value currently in its results of operations. Accordingly, the fund does not follow hedge accounting, even for derivatives employed as economic hedges. Generally, the fund accounts for its derivatives on a gross basis. It does not offset the fair value of derivative liabilities against the fair value of derivative assets on its financial statements, nor does it offset the fair value of derivative instruments against the right to reclaim or obligation to return collateral. As of May 31, 2016, the fund held interest rate futures with cumulative unrealized gain of $178,000 and cumulative unrealized loss of $1,349,000; the value reflected on the accompanying Statement of Assets and Liabilities is the related unsettled variation margin.

Additionally, the amount of gains and losses on derivative instruments recognized in fund earnings during the year ended May 31, 2016, and the related location on the accompanying Statement of Operations is summarized in the following table by primary underlying risk exposure:

Counterparty Risk and Collateral The fund invests in exchange-traded or centrally cleared derivative contracts, such as futures, exchange-traded options, and centrally cleared swaps. Counterparty risk on such derivatives is minimal because the clearinghouse provides protection against counterparty defaults. For futures and centrally cleared swaps, the fund is required to deposit collateral in an amount equal to a certain percentage of the contract value (margin requirement), and the margin requirement must be maintained over the life of the contract. Each clearing broker, in its sole discretion, may adjust the margin requirements applicable to the fund.

Collateral may be in the form of cash or debt securities issued by the U.S. government or related agencies. Cash and currencies posted by the fund are reflected as cash deposits in the accompanying financial statements and generally are restricted from withdrawal by the fund; securities posted by the fund are so noted in the accompanying Portfolio of Investments; both remain in the fund’s assets. As of May 31, 2016, securities valued at $2,444,000 had been posted by the fund for exchange-traded and/or centrally cleared derivatives.

Futures Contracts The fund is subject to interest rate risk in the normal course of pursuing its investment objectives and uses futures contracts to help manage such risk. The fund may enter into futures contracts to manage exposure to interest rate and yield curve movements, security prices, foreign currencies, credit quality, and mortgage prepayments; as an efficient means of adjusting exposure to all or part of a target market; to enhance income; as a cash management tool; or to adjust portfolio duration and credit exposure. A futures contract provides for the future sale by one party and purchase by another of a specified amount of a specific underlying financial instrument at an agreed-upon price, date, time, and place. The fund currently invests only in exchange-traded futures, which generally are standardized as to maturity date, underlying financial instrument, and other contract terms. Payments are made or received by the fund each day to settle daily fluctuations in the value of the contract (variation margin), which reflect changes in the value of the underlying financial instrument. Variation margin is recorded as unrealized gain or loss until the contract is closed. The value of a futures contract included in net assets is the amount of unsettled variation margin; net variation margin receivable is reflected as an asset, and net variation margin payable is reflected as a liability on the accompanying Statement of Assets and Liabilities. Risks related to the use of futures contracts include possible illiquidity of the futures markets, contract prices that can be highly volatile and imperfectly correlated to movements in hedged security values and/or interest rates, and potential losses in excess of the fund’s initial investment. During the year ended May 31, 2016, the volume of the fund’s activity in futures, based on underlying notional amounts, was generally between 6% and 21% of net assets.

Swaps The fund is subject to credit risk in the normal course of pursuing its investment objectives and uses swap contracts to help manage such risk. The fund may use swaps in an effort to manage exposure to changes in interest rates, inflation rates, and credit quality; to adjust overall exposure to certain markets; to enhance total return or protect the value of portfolio securities; to serve as a cash management tool; or to adjust portfolio duration and credit exposure. Swap agreements can be settled either directly with the counterparty (bilateral swap) or through a central clearinghouse (centrally cleared swap). Fluctuations in the fair value of a contract are reflected in unrealized gain or loss and are reclassified to realized gain or loss upon contract termination or cash settlement. Net periodic receipts or payments required by a contract increase or decrease, respectively, the value of the contract until the contractual payment date, at which time such amounts are reclassified from unrealized to realized gain or loss. For bilateral swaps, cash payments are made or received by the fund on a periodic basis in accordance with contract terms; unrealized gain on contracts and premiums paid are reflected as assets and unrealized loss on contracts and premiums received are reflected as liabilities on the accompanying Statement of Assets and Liabilities. For centrally cleared swaps, payments are made or received by the fund each day to settle the daily fluctuation in the value of the contract (variation margin). Accordingly, the value of a centrally cleared swap included in net assets is the unsettled variation margin; net variation margin receivable is reflected as an asset and net variation margin payable is reflected as a liability on the accompanying Statement of Assets and Liabilities.

Credit default swaps are agreements where one party (the protection buyer) agrees to make periodic payments to another party (the protection seller) in exchange for protection against specified credit events, such as certain defaults and bankruptcies related to an underlying credit instrument, or issuer or index of such instruments. Upon occurrence of a specified credit event, the protection seller is required to pay the buyer the difference between the notional amount of the swap and the value of the underlying credit, either in the form of a net cash settlement or by paying the gross notional amount and accepting delivery of the relevant underlying credit. For credit default swaps where the underlying credit is an index, a specified credit event may affect all or individual underlying securities included in the index and will be settled based upon the relative weighting of the affected underlying security(ies) within the index. Risks related to the use of credit default swaps include the possible inability of the fund to accurately assess the current and future creditworthiness of underlying issuers, the possible failure of a counterparty to perform in accordance with the terms of the swap agreements, potential government regulation that could adversely affect the fund’s swap investments, and potential losses in excess of the fund’s initial investment.

During the year ended May 31, 2016, the volume of the fund’s activity in swaps, based on underlying notional amounts, was generally between 0% and 3% of net assets.

Consistent with its investment objective, the fund engages in the following practices to manage exposure to certain risks and/or to enhance performance. The investment objective, policies, program, and risk factors of the fund are described more fully in the fund’s prospectus and Statement of Additional Information.

Restricted Securities The fund may invest in securities that are subject to legal or contractual restrictions on resale. Prompt sale of such securities at an acceptable price may be difficult and may involve substantial delays and additional costs.

TBA Purchase and Sale Commitments The fund may enter into to-be-announced (TBA) purchase or sale commitments, pursuant to which it agrees to purchase or sell, respectively, mortgage-backed securities for a fixed unit price, with payment and delivery at a scheduled future date beyond the customary settlement period for such securities. With TBA transactions, the particular securities to be delivered are not identified at the trade date; however, delivered securities must meet specified terms, including issuer, rate, and mortgage term, and be within industry-accepted “good delivery” standards. The fund may enter into TBA purchase transactions with the intention of taking possession of the underlying securities, may elect to extend the settlement by “rolling” the transaction, and/or may use TBAs to gain interim exposure to underlying securities. Until settlement, the fund maintains liquid assets sufficient to settle its TBA commitments.

To mitigate counterparty risk, the fund has entered into agreements with TBA counterparties that provide for collateral and the right to offset amounts due to or from those counterparties under specified conditions. Subject to minimum transfer amounts, collateral requirements are determined and transfers made based on the net aggregate unrealized gain or loss on all TBA commitments with a particular counterparty. At any time, the fund’s risk of loss from a particular counterparty related to its TBA commitments is the aggregate unrealized gain on appreciated TBAs in excess of unrealized loss on depreciated TBAs and collateral received, if any, from such counterparty. As of May 31, 2016, cash of $392,000 had been posted by the fund to counterparties for TBAs. Collateral pledged by counterparties to the fund for TBAs consisted of $71,000 cash.

Dollar Rolls The fund may enter into dollar roll transactions, pursuant to which it sells a mortgage-backed TBA or security and simultaneously agrees to purchase a similar, but not identical, TBA with the same issuer, rate, and terms on a later date at a set price from the same counterparty. The fund may execute a “roll” to obtain better underlying mortgage securities or to enhance returns. The fund generally enters into dollar roll transactions with the intention of taking possession of the underlying mortgage securities but may close a contract prior to settlement or “roll” settlement to a later date if deemed to be in the best interest of shareholders. Actual mortgages received by the fund may be less favorable than those anticipated. The fund accounts for dollar roll transactions as purchases and sales, which has the effect of increasing its portfolio turnover rate.

Mortgage-Backed Securities The fund may invest in mortgage-backed securities (MBS or pass-through certificates) that represent an interest in a pool of specific underlying mortgage loans and entitle the fund to the periodic payments of principal and interest from those mortgages. MBS may be issued by government agencies or corporations, or private issuers. Most MBS issued by government agencies are guaranteed; however, the degree of protection differs based on the issuer. The fund also may invest in stripped MBS, created when a traditional MBS is split into an interest-only (IO) and a principal-only (PO) strip. MBS, including IOs and POs, are sensitive to changes in economic conditions that affect the rate of prepayments and defaults on the underlying mortgages; accordingly, the value, income, and related cash flows from MBS may be more volatile than other debt instruments. IOs also risk loss of invested principal from faster-than-anticipated prepayments.

Other Purchases and sales of portfolio securities other than short-term and U.S. government securities aggregated $125,895,000 and $91,024,000, respectively, for the year ended May 31, 2016. Purchases and sales of U.S. government securities aggregated $7,834,268,000 and $7,810,640,000, respectively, for the year ended May 31, 2016.

No provision for federal income taxes is required since the fund intends to continue to qualify as a regulated investment company under Subchapter M of the Internal Revenue Code and distribute to shareholders all of its taxable income and gains. Distributions determined in accordance with federal income tax regulations may differ in amount or character from net investment income and realized gains for financial reporting purposes. Financial reporting records are adjusted for permanent book/tax differences to reflect tax character but are not adjusted for temporary differences.

The fund files U.S. federal, state, and local tax returns as required. The fund’s tax returns are subject to examination by the relevant tax authorities until expiration of the applicable statute of limitations, which is generally three years after the filing of the tax return but which can be extended to six years in certain circumstances. Tax returns for open years have incorporated no uncertain tax positions that require a provision for income taxes.

Reclassifications to paid-in capital relate primarily to an over-distribution of taxable income not deemed a return of capital for tax purposes. Reclassifications between income and gain relate primarily to the character of paydown gains and losses on asset-backed securities. For the year ended May 31, 2016, the following reclassifications were recorded to reflect tax character (there was no impact on results of operations or net assets):

Distributions during the years ended May 31, 2016 and May 31, 2015, totaled $46,337,000 and $49,185,000, respectively, and were characterized as ordinary income for tax purposes. At May 31, 2016, the tax-basis cost of investments and components of net assets were as follows:

The fund intends to retain realized gains to the extent of available capital loss carryforwards. Net realized capital losses may be carried forward indefinitely to offset future realized capital gains. Further, $5,981,000 of the fund’s available capital loss carryforwards acquired through tax-free reorganizations may be subject to certain limitations on amount or timing of use.

The fund is managed by T. Rowe Price Associates, Inc. (Price Associates), a wholly owned subsidiary of T. Rowe Price Group, Inc. (Price Group). The investment management agreement between the fund and Price Associates provides for an annual investment management fee, which is computed daily and paid monthly. The fee consists of an individual fund fee, equal to 0.15% of the fund’s average daily net assets, and a group fee. The group fee rate is calculated based on the combined net assets of certain mutual funds sponsored by Price Associates (the group) applied to a graduated fee schedule, with rates ranging from 0.48% for the first $1 billion of assets to 0.275% for assets in excess of $400 billion. The fund’s group fee is determined by applying the group fee rate to the fund’s average daily net assets. At May 31, 2016, the effective annual group fee rate was 0.29%.

In addition, the fund has entered into service agreements with Price Associates and two wholly owned subsidiaries of Price Associates (collectively, Price). Price Associates provides certain accounting and administrative services to the fund. T. Rowe Price Services, Inc., provides shareholder and administrative services in its capacity as the fund’s transfer and dividend-disbursing agent. T. Rowe Price Retirement Plan Services, Inc., provides subaccounting and recordkeeping services for certain retirement accounts invested in the fund. For the year ended May 31, 2016, expenses incurred pursuant to these service agreements were $62,000 for Price Associates; $615,000 for T. Rowe Price Services, Inc.; and $202,000 for T. Rowe Price Retirement Plan Services, Inc. The total amount payable at period-end pursuant to these service agreements is reflected as Due to Affiliates in the accompanying financial statements.

The fund is also one of several mutual funds sponsored by Price Associates (underlying Price funds) in which the T. Rowe Price Spectrum Funds (Spectrum Funds) may invest. The Spectrum Funds do not invest in the underlying Price funds for the purpose of exercising management or control. Pursuant to a special servicing agreement, expenses associated with the operation of the Spectrum Funds are borne by each underlying Price fund to the extent of estimated savings to it and in proportion to the average daily value of its shares owned by the Spectrum Funds. Expenses allocated under this agreement are reflected as shareholder servicing expense in the accompanying financial statements. For the year ended May 31, 2016, the fund was allocated $771,000 of Spectrum Funds’ expenses, of which $528,000 related to services provided by Price. At period-end, the amount payable to Price pursuant to this agreement is reflected as Due to Affiliates in the accompanying financial statements. At May 31, 2016, approximately 37% shares of the fund were held by the Spectrum Funds.

The fund may invest in the T. Rowe Price Reserve Investment Fund, the T. Rowe Price Government Reserve Investment Fund, or the T. Rowe Price Short-Term Reserve Fund (collectively, the Price Reserve Investment Funds), open-end management investment companies managed by Price Associates and considered affiliates of the fund. The Price Reserve Investment Funds are offered as short-term investment options to mutual funds, trusts, and other accounts managed by Price Associates or its affiliates and are not available for direct purchase by members of the public. The Price Reserve Investment Funds pay no investment management fees.

The fund may participate in securities purchase and sale transactions with other funds or accounts advised by Price Associates (cross trades), in accordance with procedures adopted by the fund’s Board and Securities and Exchange Commission rules, which require, among other things, that such purchase and sale cross trades be effected at the independent current market price of the security. During the year ended May 31, 2016, the fund had no purchases or sales cross trades with other funds or accounts advised by Price Associates.

In our opinion, the accompanying statement of assets and liabilities, including the portfolio of investments, and the related statements of operations and of changes in net assets and the financial highlights present fairly, in all material respects, the financial position of the T. Rowe Price GNMA Fund (the “Fund”) at May 31, 2016, the results of its operations, the changes in its net assets and the financial highlights for each of the periods indicated therein, in conformity with accounting principles generally accepted in the United States of America. These financial statements and financial highlights (hereafter referred to as “financial statements”) are the responsibility of the Fund’s management. Our responsibility is to express an opinion on these financial statements based on our audits. We conducted our audits of these financial statements in accordance with the standards of the Public Company Accounting Oversight Board (United States). Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements, assessing the accounting principles used and significant estimates made by management, and evaluating the overall financial statement presentation. We believe that our audits, which included confirmation of securities at May 31, 2016 by correspondence with the custodian and brokers, and confirmation of the underlying fund by correspondence with the transfer agent, provide a reasonable basis for our opinion.

A description of the policies and procedures used by T. Rowe Price funds and portfolios to determine how to vote proxies relating to portfolio securities is available in each fund’s Statement of Additional Information. You may request this document by calling 1-800-225-5132 or by accessing the SEC’s website, sec.gov.

The description of our proxy voting policies and procedures is also available on our website, troweprice.com. To access it, click on the words “Social Responsibility” at the top of our corporate homepage. Next, click on the words “Conducting Business Responsibly” on the left side of the page that appears. Finally, click on the words “Proxy Voting Policies” on the left side of the page that appears.

Each fund’s most recent annual proxy voting record is available on our website and through the SEC’s website. To access it through our website, follow the above directions to reach the “Conducting Business Responsibly” page. Click on the words “Proxy Voting Records” on the left side of that page, and then click on the “View Proxy Voting Records” link at the bottom of the page that appears.

The fund files a complete schedule of portfolio holdings with the Securities and Exchange Commission for the first and third quarters of each fiscal year on Form N-Q. The fund’s Form N-Q is available electronically on the SEC’s website (sec.gov); hard copies may be reviewed and copied at the SEC’s Public Reference Room, 100 F St. N.E., Washington, DC 20549. For more information on the Public Reference Room, call 1-800-SEC-0330.

On March 11, 2016, the fund’s Board of Trustees (Board), including a majority of the fund’s independent trustees, approved the continuation of the investment management agreement (Advisory Contract) between the fund and its investment advisor, T. Rowe Price Associates, Inc. (Advisor). In connection with its deliberations, the Board requested, and the Advisor provided, such information as the Board (with advice from independent legal counsel) deemed reasonably necessary. The Board considered a variety of factors in connection with its review of the Advisory Contract, also taking into account information provided by the Advisor during the course of the year, as discussed below:

Services Provided by the Advisor
The Board considered the nature, quality, and extent of the services provided to the fund by the Advisor. These services included, but were not limited to, directing the fund’s investments in accordance with its investment program and the overall management of the fund’s portfolio, as well as a variety of related activities such as financial, investment operations, and administrative services; compliance; maintaining the fund’s records and registrations; and shareholder communications. The Board also reviewed the background and experience of the Advisor’s senior management team and investment personnel involved in the management of the fund, as well as the Advisor’s compliance record. The Board concluded that it was satisfied with the nature, quality, and extent of the services provided by the Advisor.

Investment Performance of the Fund
The Board reviewed the fund’s three-month, one-year, and year-by-year returns, as well as the fund’s average annualized total returns over the 3-, 5-, and 10-year periods, and compared these returns with a wide variety of comparable performance measures and market data, including those supplied by Lipper and Morningstar, which are independent providers of mutual fund data.

On the basis of this evaluation and the Board’s ongoing review of investment results, and factoring in the relative market conditions during certain of the performance periods, the Board concluded that the fund’s performance was satisfactory.

Costs, Benefits, Profits, and Economies of Scale
The Board reviewed detailed information regarding the revenues received by the Advisor under the Advisory Contract and other benefits that the Advisor (and its affiliates) may have realized from its relationship with the fund, including any research received under “soft dollar” agreements and commission-sharing arrangements with broker-dealers. The Board considered that the Advisor may receive some benefit from soft-dollar arrangements pursuant to which research is received from broker-dealers that execute the applicable fund’s portfolio transactions. The Board received information on the estimated costs incurred and profits realized by the Advisor from managing T. Rowe Price mutual funds. The Board also reviewed estimates of the profits realized from managing the fund in particular, and the Board concluded that the Advisor’s profits were reasonable in light of the services provided to the fund.

The Board also considered whether the fund benefits under the fee levels set forth in the Advisory Contract from any economies of scale realized by the Advisor. Under the Advisory Contract, the fund pays a fee to the Advisor for investment management services composed of two components—a group fee rate based on the combined average net assets of most of the T. Rowe Price mutual funds (including the fund) that declines at certain asset levels and an individual fund fee rate based on the fund’s average daily net assets—and the fund pays its own expenses of operations. The Board concluded that the advisory fee structure for the fund continued to provide for a reasonable sharing of benefits from any economies of scale with the fund’s investors.

Fees
The Board was provided with information regarding industry trends in management fees and expenses, and the Board reviewed the fund’s management fee rate, operating expenses, and total expense ratio in comparison with fees and expenses of other comparable funds based on information and data supplied by Lipper. The information provided to the Board indicated that the fund’s management fee rate and total expense ratio were above the median for certain groups of comparable funds and at or below the median for other groups of comparable funds.

The Board also reviewed the fee schedules for institutional accounts (including subadvised mutual funds) and private accounts with similar mandates that are advised or subadvised by the Advisor and its affiliates. Management provided the Board with information about the Advisor’s responsibilities and services provided to subadvisory and other institutional account clients, including information about how the requirements and economics of the institutional business differ from those of the Advisor’s proprietary mutual fund business. The Board considered information showing that the Advisor’s proprietary mutual fund business is generally more complex from a business and compliance perspective than its institutional account business and considered various other relevant factors, including the broader scope of operations and oversight, more extensive shareholder communication infrastructure, greater asset flows, heightened business risks, and differences in applicable laws and regulations associated with the Advisor’s proprietary mutual fund business. In assessing the reasonableness of the fund’s management fee rate, the Board considered the differences in the nature of the services required for the Advisor to manage its proprietary mutual fund business versus managing a discrete pool of assets as a subadvisor to another institution’s mutual fund or for another institutional account and the degree to which the Advisor performs significant additional services and assumes greater risk in managing the fund and other T. Rowe Price mutual funds than it does for institutional account clients.

On the basis of the information provided and the factors considered, the Board concluded that the fees paid by the fund under the Advisory Contract are reasonable.

Approval of the Advisory Contract
As noted, the Board approved the continuation of the Advisory Contract. No single factor was considered in isolation or to be determinative to the decision. Rather, the Board concluded, in light of a weighting and balancing of all factors considered, that it was in the best interests of the fund and its shareholders for the Board to approve the continuation of the Advisory Contract (including the fees to be charged for services thereunder). The independent trustees were advised throughout the process by independent legal counsel.

Your fund is overseen by a Board of Trustees (Board) that meets regularly to review a wide variety of matters affecting or potentially affecting the fund, including performance, investment programs, compliance matters, advisory fees and expenses, service providers, and business and regulatory affairs. The Board elects the fund’s officers, who are listed in the final table. At least 75% of the Board’s members are independent of T. Rowe Price Associates, Inc. (T. Rowe Price), and its affiliates; “inside” or “interested” trustees are employees or officers of T. Rowe Price. The business address of each trustee and officer is 100 East Pratt Street, Baltimore, Maryland 21202. The Statement of Additional Information includes additional information about the fund trustees and is available without charge by calling a T. Rowe Price representative at 1-800-638-5660.

The registrant has adopted a code of ethics, as defined in Item 2 of Form N-CSR, applicable to its principal executive officer, principal financial officer, principal accounting officer or controller, or persons performing similar functions. A copy of this code of ethics is filed as an exhibit to this Form N-CSR. No substantive amendments were approved or waivers were granted to this code of ethics during the period covered by this report.

The registrant’s Board of Directors/Trustees has determined that Mr. Bruce W. Duncan qualifies as an audit committee financial expert, as defined in Item 3 of Form N-CSR. Mr. Duncan is considered independent for purposes of Item 3 of Form N-CSR.

(a) – (d) Aggregate fees billed for the last two fiscal years for professional services rendered to, or on behalf of, the registrant by the registrant’s principal accountant were as follows:

Audit fees include amounts related to the audit of the registrant’s annual financial statements and services normally provided by the accountant in connection with statutory and regulatory filings. Audit-related fees include amounts reasonably related to the performance of the audit of the registrant’s financial statements and specifically include the issuance of a report on internal controls and, if applicable, agreed-upon procedures related to fund acquisitions. Tax fees include amounts related to services for tax compliance, tax planning, and tax advice. The nature of these services specifically includes the review of distribution calculations and the preparation of Federal, state, and excise tax returns. All other fees include the registrant’s pro-rata share of amounts for agreed-upon procedures in conjunction with service contract approvals by the registrant’s Board of Directors/Trustees.

(e)(1) The registrant’s audit committee has adopted a policy whereby audit and non-audit services performed by the registrant’s principal accountant for the registrant, its investment adviser, and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant require pre-approval in advance at regularly scheduled audit committee meetings. If such a service is required between regularly scheduled audit committee meetings, pre-approval may be authorized by one audit committee member with ratification at the next scheduled audit committee meeting. Waiver of pre-approval for audit or non-audit services requiring fees of a de minimis amount is not permitted.

(2) No services included in (b) – (d) above were approved pursuant to paragraph (c)(7)(i)(C) of Rule 2-01 of Regulation S-X.

(f) Less than 50 percent of the hours expended on the principal accountant’s engagement to audit the registrant’s financial statements for the most recent fiscal year were attributed to work performed by persons other than the principal accountant’s full-time, permanent employees.

(g) The aggregate fees billed for the most recent fiscal year and the preceding fiscal year by the registrant’s principal accountant for non-audit services rendered to the registrant, its investment adviser, and any entity controlling, controlled by, or under common control with the investment adviser that provides ongoing services to the registrant were $2,409,000 and $2,554,000, respectively.

(h) All non-audit services rendered in (g) above were pre-approved by the registrant’s audit committee. Accordingly, these services were considered by the registrant’s audit committee in maintaining the principal accountant’s independence.

(a) Not applicable. The complete schedule of investments is included in Item 1 of this Form N-CSR.

Item 7. Disclosure of Proxy Voting Policies and Procedures for Closed-End Management Investment Companies.

Item 9. Purchases of Equity Securities by Closed-End Management Investment Company and Affiliated Purchasers.

(a) The registrant’s principal executive officer and principal financial officer have evaluated the registrant’s disclosure controls and procedures within 90 days of this filing and have concluded that the registrant’s disclosure controls and procedures were effective, as of that date, in ensuring that information required to be disclosed by the registrant in this Form N-CSR was recorded, processed, summarized, and reported timely.

(b) The registrant’s principal executive officer and principal financial officer are aware of no change in the registrant’s internal control over financial reporting that occurred during the registrant’s second fiscal quarter covered by this report that has materially affected, or is reasonably likely to materially affect, the registrant’s internal control over financial reporting.

(a)(1) The registrant’s code of ethics pursuant to Item 2 of Form N-CSR is attached.

(2) Separate certifications by the registrant's principal executive officer and principal financial officer, pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 and required by Rule 30a-2(a) under the Investment Company Act of 1940, are attached.

(b) A certification by the registrant's principal executive officer and principal financial officer, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 and required by Rule 30a-2(b) under the Investment Company Act of 1940, is attached.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized.

T. Rowe Price GNMA Fund

	By	/s/ Edward C. Bernard
		Edward C. Bernard
		Principal Executive Officer

Date July 19, 2016

Pursuant to the requirements of the Securities Exchange Act of 1934 and the Investment Company Act of 1940, this report has been signed below by the following persons on behalf of the registrant and in the capacities and on the dates indicated.

	By	/s/ Edward C. Bernard
		Edward C. Bernard
		Principal Executive Officer

Date July 19, 2016


	By	/s/ Catherine D. Mathews
		Catherine D. Mathews
		Principal Financial Officer

Date July 19, 2016

Independent Trustees

Name
(Year of Birth)
Year Elected*
[Number of T. Rowe Price		Principal Occupation(s) and Directorships of Public Companies and
Portfolios Overseen]		Other Investment Companies During the Past Five Years

William R. Brody, M.D., Ph.D.		President and Trustee, Salk Institute for Biological Studies (2009 to
(1944)		present); Director, BioMed Realty Trust (2013 to 2016); Chairman of
2009		the Board, Mesa Biotech, a molecular diagnostic company (March
[185]		2016 to present); Director, Novartis, Inc. (2009 to 2014); Director,
		IBM (2007 to present)

Anthony W. Deering		Chairman, Exeter Capital, LLC, a private investment firm (2004 to
(1945)		present); Director, Brixmor Real Estate Investment Trust (2012 to
1985		present); Director and Advisory Board Member, Deutsche Bank
[185]		North America (2004 to present); Director, Under Armour (2008
		to present); Director, Vornado Real Estate Investment Trust (2004
		to 2012)

Bruce W. Duncan		President, Chief Executive Officer, Director (2009 to present), and
(1951)		Chairman of the Board (January 2016 to present), First Industrial
2013		Realty Trust, an owner and operator of industrial properties;
[185]		Chairman of the Board (2005 to present) and Director (1999 to
		present), Starwood Hotels & Resorts, a hotel and leisure company

Robert J. Gerrard, Jr.		Advisory Board Member, Pipeline Crisis/Winning Strategies, a
(1952)		collaborative working to improve opportunities for young African
2013		Americans (1997 to present)
[185]

Paul F. McBride		Advisory Board Member, Vizzia Technologies (2015 to present)
(1956)
2013
[185]

Cecilia E. Rouse, Ph.D.		Dean, Woodrow Wilson School (2012 to present); Professor and
(1963)		Researcher, Princeton University (1992 to present); Director, MDRC,
2013		a nonprofit education and social policy research organization (2011
[185]		to present); Member of National Academy of Education (2010 to
		present); Research Associate of Labor Program (2011 to present)
		and Board Member (2015 to present), National Bureau of Economic
		Research (2011 to present); Chair of Committee on the Status of
		Minority Groups in the Economic Profession (2012 to present) and
		Vice President (2015 to present), American Economic Association

John G. Schreiber		Owner/President, Centaur Capital Partners, Inc., a real estate
(1946)		investment company (1991 to present); Cofounder, Partner, and
1992		Cochairman of the Investment Committee, Blackstone Real Estate
[185]		Advisors, L.P. (1992 to 2015); Director, General Growth Properties,
		Inc. (2010 to 2013); Director, Blackstone Mortgage Trust, a real
		estate financial company (2012 to 2016); Director and Chairman of
		the Board, Brixmor Property Group, Inc. (2013 to present); Director,
		Hilton Worldwide (2013 to present); Director, Hudson Pacific
		Properties (2014 to 2016)

Mark R. Tercek		President and Chief Executive Officer, The Nature Conservancy (2008
(1957)		to present)
2009
[185]

*Each independent trustee serves until retirement, resignation, or election of a successor.

Inside Trustees

Name
(Year of Birth)
Year Elected*
[Number of T. Rowe Price		Principal Occupation(s) and Directorships of Public Companies and
Portfolios Overseen]		Other Investment Companies During the Past Five Years

Edward C. Bernard		Director and Vice President, T. Rowe Price; Vice Chairman of the
(1956)		Board, Director, and Vice President, T. Rowe Price Group, Inc.;
2006		Chairman of the Board, Director, and President, T. Rowe Price
[185]		Investment Services, Inc.; Chairman of the Board and Director,
		T. Rowe Price Retirement Plan Services, Inc., and T. Rowe Price
		Services, Inc.; Chairman of the Board, Chief Executive Officer,
		Director, and President, T. Rowe Price International and T. Rowe
		Price Trust Company; Chairman of the Board, all funds

Edward A. Wiese, CFA		Vice President, T. Rowe Price, T. Rowe Price Group, Inc., T. Rowe
(1959)		Price International, and T. Rowe Price Trust Company
2015
[54]

*Each inside trustee serves until retirement, resignation, or election of a successor.

Officers

Name (Year of Birth)
Position Held With GNMA Fund		Principal Occupation(s)

Anil K. Andhavarapu (1980)		Vice President, T. Rowe Price
Vice President

Darrell N. Braman (1963)		Vice President, Price Hong Kong, Price
Vice President and Secretary		Singapore, T. Rowe Price, T. Rowe Price Group,
		Inc., T. Rowe Price International, T. Rowe Price
		Investment Services, Inc., and T. Rowe Price
		Services, Inc.

Brian J. Brennan, CFA (1964)		Vice President, T. Rowe Price, T. Rowe Price
Vice President		Group, Inc., T. Rowe Price International, and
		T. Rowe Price Trust Company

Christopher P. Brown, Jr., CFA (1977)		Vice President, T. Rowe Price and T. Rowe Price
Vice President		Group, Inc.

Ramon R. deCastro (1966)		Vice President, T. Rowe Price and T. Rowe Price
Vice President		Group, Inc.; formerly, Chief Operating Officer,
		Amherst Advisory & Management, LLC (to 2012)

John R. Gilner (1961)		Chief Compliance Officer and Vice President,
Chief Compliance Officer		T. Rowe Price; Vice President, T. Rowe Price
		Group, Inc., and T. Rowe Price Investment
		Services, Inc.

Keir R. Joyce, CFA (1972)		Vice President, T. Rowe Price and T. Rowe Price
Vice President		Group, Inc.

Steven M. Kohlenstein (1987)		Assistant Vice President, T. Rowe Price
Assistant Vice President

Paul J. Krug, CPA (1964)		Vice President, T. Rowe Price, T. Rowe Price
Vice President		Group, Inc., and T. Rowe Price Trust Company

Martin G. Lee (1963)		Vice President, T. Rowe Price and T. Rowe Price
Vice President		Group, Inc.

Alan D. Levenson, Ph.D. (1958)		Vice President, T. Rowe Price and T. Rowe Price
Vice President		Group, Inc.

Catherine D. Mathews (1963)		Vice President, T. Rowe Price, T. Rowe Price
Treasurer and Vice President		Group, Inc., and T. Rowe Price Trust Company

Andrew C. McCormick (1960)		Vice President, T. Rowe Price, T. Rowe Price
President		Group, Inc., and T. Rowe Price Trust Company

David Oestreicher (1967)		Director, Vice President, and Secretary, T. Rowe
Vice President		Price Investment Services, Inc., T. Rowe
		Price Retirement Plan Services, Inc., T. Rowe
		Price Services, Inc., and T. Rowe Price Trust
		Company; Chief Legal Officer, Vice President,
		and Secretary, T. Rowe Price Group, Inc.; Vice
		President and Secretary, T. Rowe Price and
		T. Rowe Price International; Vice President,
		Price Hong Kong and Price Singapore

John W. Ratzesberger (1975)		Vice President, T. Rowe Price, T. Rowe Price
Vice President		Group, Inc., and T. Rowe Price Trust Company;
		formerly, North American Head of Listed
		Derivatives Operation, Morgan Stanley
		(to 2013)

Shannon H. Rauser (1987)		Employee, T. Rowe Price
Assistant Secretary

Deborah D. Seidel (1962)		Vice President, T. Rowe Price, T. Rowe Price
Vice President		Group, Inc., T. Rowe Price Investment Services,
		Inc., and T. Rowe Price Services, Inc.

Michael K. Sewell (1982)		Vice President, T. Rowe Price and T. Rowe Price
Vice President		Group, Inc.

Victor M. Weinblatt (1988)		Assistant Vice President, T. Rowe Price
Assistant Vice President

John D. Wells (1960)		Vice President, T. Rowe Price and T. Rowe Price
Vice President		Group, Inc.

Rick Zhang (1984)		Vice President, T. Rowe Price; formerly, Vice
Vice President		President, PIMCO (to 2012)

Jeffrey T. Zoller (1970)		Vice President, T. Rowe Price, T. Rowe Price
Vice President		International, and T. Rowe Price Trust Company

Unless otherwise noted, officers have been employees of T. Rowe Price or T. Rowe Price International for at least 5 years.