Form N-CSRS PUTNAM DIVERSIFIED INCOM For: Mar 31

Putnam
Diversified Income
Trust

Semiannual report
3 | 31 | 22

Message from the Trustees

May 10, 2022

Dear Fellow Shareholder:

Financial markets have been bumpy in recent months. Investors are weighing the risks of higher inflation, interest-rate increases by the Federal Reserve, and the global impact of Russia’s attack on Ukraine. Regional surges in Covid-19 infections are also complicating global trade.

In times like these, it’s worth remembering the benefits of staying focused on your long-term financial goals. At Putnam, professional, active investors are working for you. They are monitoring risks while looking for strong potential investments for your fund. Learn more in the interview with your fund manager(s) in the following pages.

Thank you for investing with Putnam.

Current performance may be lower or higher than the quoted past performance, which cannot guarantee future results. Share price, principal value, and return will fluctuate, and you may have a gain or a loss when you sell your shares. Performance of class A shares assumes reinvestment of distributions and does not account for taxes. Fund returns in the bar chart do not reflect a sales charge of 4.00%; had they, returns would have been lower. See below and pages 9–10 for additional performance information. For a portion of the periods, the fund had expense limitations, without which returns would have been lower. To obtain the most recent month-end performance, visit putnam.com.

Returns for periods of less than one year are not annualized.

Lipper peer group average is provided by Lipper, a Refinitiv company.

* The fund’s benchmark, the ICE BofA U.S. Treasury Bill Index, was introduced on 6/30/92, which post-dates the inception of the fund.

This comparison shows your fund’s performance in the context of broad market indexes for the six months ended 3/31/22. See above and pages 9–10 for additional fund performance information. Index descriptions can be found on page 15.

All Bloomberg indices are provided by Bloomberg Index Services Limited.

Mike, what was the fund’s investment environment like during the six months ended March 31, 2022?

After posting relatively subdued returns during the first half of the reporting period, fixed income markets became volatile during the second half. Hawkish policy pivots from the U.S. Federal Reserve and the European Central Bank in the face of rapidly rising inflation, combined with Russia’s invasion of Ukraine, fueled a flight from risk.

Within this environment, credit spreads widened and interest rates rose. [Spreads are the yield advantage credit-sensitive bonds offer over comparable-maturity U.S. Treasuries. Bond prices rise as yield spreads tighten and decline as spreads widen.] The yield on the benchmark 10-year U.S. Treasury rose from 1.52% on September 30, 2021, to 2.32% on March 31, 2022. In anticipation of Fed policy changes, short-term yields rose even more, causing the yield curve to flatten materially.

On March 16, the Fed approved a 0.25% interest-rate hike, its first increase since December 2018. Fed Chair Jerome Powell signaled an aggressive approach going forward,

Credit qualities are shown as a percentage of the fund’s net assets as of 3/31/22. A bond rated BBB or higher (A-3 or higher, for short-term debt) is considered investment grade. This chart reflects the highest security rating provided by one or more of Standard & Poor’s, Moody’s, and Fitch. To-be-announced (TBA) mortgage commitments, if any, are included based on their issuer ratings. Ratings may vary over time.

Cash, derivative instruments, and net other assets are shown in the not-rated category. Payables and receivables for TBA mortgage commitments are included in the not-rated category and may result in negative weights. The fund itself has not been rated by an independent rating agency.

indicating that additional interest-rate hikes could occur at each of the remaining six policy meetings in 2022.

Which holdings and strategies hampered the fund’s performance?

First off, I think it’s important to highlight that the fund continued to invest outside the constraints of traditional fixed income benchmarks, seeking what we view as the best investment opportunities based on risk rather than asset class. These risks include interest rate, credit, prepayment, and liquidity. Despite the fund’s negative return, this emphasis on diversification helped it outpace the broad investment-grade fixed income market, as measured by the Bloomberg U.S. Aggregate Bond Index, during the reporting period.

In terms of specific strategies, our interest-rate and yield curve strategy was the primary detractor this period. The portfolio was positioned to benefit if inflation declined and real interest rates rose. [Real interest rates adjust for the effects of inflation by subtracting the actual or expected rate of inflation from nominal interest rates.] Rising inflation hurt our strategy, but the portfolio benefited from an increase in real interest rates during the first quarter of calendar 2022. This benefit partially offset the negative outcome of our broader term structure strategy.

Strategies targeting prepayment risk also proved negative overall. Yield spreads on our agency interest-only [IO] and inverse IO collateralized mortgage obligations [CMOs]

widened during the fourth quarter of calendar 2021 due to broader market volatility. Our mortgage basis positioning helped offset some of this performance drag. Our mortgage basis strategy received a boost early in 2022, following the release of the minutes from the Fed’s December 2021 policy meeting. The minutes indicated the central bank might sell its holdings of government agency mortgage-backed securities [MBS] more rapidly than investors originally anticipated, which could cause MBS yields to rise more quickly. By way of explanation, our mortgage basis strategy seeks to capitalize on the difference between longer-term U.S. Treasury yields and the interest rates on 30-year home mortgages.

Elsewhere, our active currency strategy was a further detractor, primarily because our long exposure to the Japanese yen weakened significantly versus the U.S. dollar during March.

Holdings of emerging market [EM] debt also worked against performance. The turmoil resulting from Russia’s invasion of Ukraine hit EM bonds particularly hard in February. EM debt rebounded a bit in March but not enough to fully offset earlier weakness.

What about contributors?

Mortgage credit holdings added considerable value this period, led by an allocation to commercial mortgage-backed securities [CMBS]. Our investments consisted of cash bonds along with synthetic exposure via CMBX. [CMBX is a group of tradeable indexes that each reference a basket of 25 CMBS issued in a

This table shows the fund’s top 10 individual holdings and the percentage of the fund’s net assets that each represented as of 3/31/22. Short-term investments, to-be-announced (TBA) commitments, and derivatives, if any, are excluded. Holdings may vary over time.

particular year.] Despite broader market volatility, the continued reopening of the economy and the success of vaccines helped many types of property to recover, which, in turn, boosted our CMBS positions.

How did you use derivatives during the period?

We used credit default swaps to gain exposure to CMBS via CMBX, to gain exposure to specific sectors, gain liquid exposure to individual names, and also to hedge the fund’s credit and market risks. We used bond futures and interest-rate swaps to take tactical positions at various points along the yield curve, and to hedge the risk associated with the fund’s curve positioning. We also employed interest-rate swaps to gain exposure to rates in various countries. We utilized options to hedge the fund’s interest-rate risk, to isolate the prepayment risk associated with our holdings of CMOs, and to help manage overall downside risk. We used total return swaps as a hedging tool and to help manage the portfolio’s sector exposure, as well as its inflation risk. Lastly, we used currency forward contracts to hedge the foreign exchange risk associated with non-U.S. bonds and to efficiently gain exposure to foreign currencies.

What are your current views on the major sectors in which the fund invests?

Overall, we have a cautiously optimistic outlook but recognize that geopolitical tensions and monetary policy decisions will likely continue to influence fixed income markets.

Looking first at high-yield corporate credit, our view is moderately constructive. We have a positive outlook for high-yield market fundamentals and the overall supply-and-demand backdrop. That said, we anticipate continued bouts of volatility given the conflict in Ukraine, the pace of Fed interest-rate hikes, and potentially negative effects on energy supplies from sanctions on Russia. Our view on security valuations is more neutral, given the relative tightness of yield spreads in the market as of March 31. Spreads widened during the period but remain tight by historical standards.

We believe the fundamental environment will continue to improve in the CMBS market as workers return to offices, consumer traffic

This chart shows how the fund’s top weightings have changed over the past six months. Allocations are shown as a percentage of the fund’s net assets. Current period summary information may differ from the portfolio schedule included in the financial statements due to the inclusion of derivative securities, any interest accruals, the use of different classifications of securities for presentation purposes, and rounding. Holdings and allocations may vary over time.

increases at retailers, and hotels welcome back business and leisure travelers. Our emphasis on investment opportunities in the U.S. helps to minimize the impact of geopolitical risk on the fund’s portfolio, in our view. Moreover, with real assets serving as collateral, along with the potential for rent adjustments, CMBS have historically performed well during periods of rising inflation. Consistent with risk markets generally, CMBS spreads widened during the first quarter of calendar 2022. The increased liquidity premium enhanced the appeal of select market segments, in our view.

Within residential mortgage credit, we believe continued high demand and low inventory of available homes is likely to push prices even higher. Given that home prices have already risen substantially and mortgage rates have moved up, we are aware that affordability has become a constraint for many prospective buyers. Consequently, we think the pace of home price appreciation is likely to moderate during 2022. Wider spreads have created better value among mid-tier and lower-rated securities. As a result, we are finding attractive investment opportunities in that area of the market, as well as among higher-rated securities.

We believe the Fed’s shift toward tighter monetary policy may cause it to accelerate sales of MBS that it currently holds. A faster pace of MBS tapering may reduce home price inflation, helping to boost the Fed’s inflation-fighting mandate. Against this backdrop, we believe many prepayment-sensitive securities may offer attractive risk-adjusted returns from current price levels and may offer meaningful upside potential if mortgage prepayment speeds slow. We think the fund’s prepayment-related strategies provide an important source of diversification in the portfolio. In our view, prepayment strategies

Derivatives are an increasingly common type of investment instrument, the performance of which is derived from an underlying security, index, currency, or other area of the capital markets. Derivatives employed by the fund’s managers generally serve one of two main purposes: to implement a strategy that may be difficult or more expensive to invest in through traditional securities, or to hedge unwanted risk associated with a particular position.

For example, the fund’s managers might use currency forward contracts to capitalize on an anticipated change in exchange rates between two currencies. This approach would require a significantly smaller outlay of capital than purchasing traditional bonds denominated in the underlying currencies. In another example, the managers may identify a bond that they believe is undervalued relative to its risk of default, but may seek to reduce the interest-rate risk of that bond by using interest-rate swaps, a derivative through which two parties “swap” payments based on the movement of certain rates. In other examples, the managers may use options and futures contracts to hedge against a variety of risks.

Like any other investment, derivatives may not appreciate in value and may lose money. Derivatives may amplify traditional investment risks through the creation of leverage and may be less liquid than traditional securities. And because derivatives typically represent contractual agreements between two financial institutions, derivatives entail “counterparty risk,” which is the risk that the other party is unable or unwilling to pay. Putnam monitors the counterparty risks we assume. For example, Putnam often enters into collateral agreements that require the counterparties to post collateral on a regular basis to cover their obligations to the fund. Counterparty risk for exchange-traded futures and centrally cleared swaps is mitigated by the daily exchange of margin and other safeguards against default through their respective clearinghouses.

could benefit from an economic slowdown, a shift to supportive fiscal policies, or a sustained increase in mortgage rates.

Thanks for your time and for bringing us up to date, Mike.

The views expressed in this report are exclusively those of Putnam Management and are subject to change. They are not meant as investment advice.

Please note that the holdings discussed in this report may not have been held by the fund for the entire period. Portfolio composition is subject to review in accordance with the fund’s investment strategy and may vary in the future. Current and future portfolio holdings are subject to risk.

Of special interest

The fund had minimal exposure to Russian securities at the end of the period. Holdings in Russian securities generally experienced sharp declines in value in late February and early March 2022. Additionally, they have been subject to liquidity and settlement constraints, as well as, in certain cases, U.S. and other governmental sanctions. We are closely monitoring governmental actions, including the issuance of sanctions, and related market developments.

Your fund’s performance

This section shows your fund’s performance, price, and distribution information for periods ended March 31, 2022, the end of the first half of its current fiscal year. In accordance with regulatory requirements for mutual funds, we also include expense information taken from the fund’s current prospectus. Performance should always be considered in light of a fund’s investment strategy. Data represent past performance. Past performance does not guarantee future results. More recent returns may be less or more than those shown. Investment return and principal value will fluctuate, and you may have a gain or a loss when you sell your shares. Performance information does not reflect any deduction for taxes a shareholder may owe on fund distributions or on the redemption of fund shares. For the most recent month-end performance, please visit the Individual Investors section at putnam.com or call Putnam at 1-800-225-1581. Class M, R, R6, and Y shares are not available to all investors. See the Terms and definitions section in this report for definitions of the share classes offered by your fund.

Annualized fund performance Total return for periods ended 3/31/22

Current performance may be lower or higher than the quoted past performance, which cannot guarantee future results. After-sales-charge returns for class A and M shares reflect the deduction of the maximum 4.00% and 3.25% sales charge, respectively, levied at the time of purchase. Class B share returns after contingent deferred sales charge (CDSC) reflect the applicable CDSC, which is 5% in the first year, declining over time to 1% in the sixth year, and is eliminated thereafter. Class C share returns after CDSC reflect a 1% CDSC for the first year that is eliminated thereafter. Class R, R6, and Y shares have no initial sales charge or CDSC. Performance for class B, C, M, R, and Y shares before their inception is derived from the historical performance of class A shares, adjusted for the applicable sales charge (or CDSC) and the higher operating expenses for such shares, except for class Y shares, for which 12b-1 fees are not applicable. Performance for class R6 shares prior to their inception is derived from the historical performance of class Y shares and has not been adjusted for the lower investor servicing fees applicable to class R6 shares; had it, returns would have been higher.

Returns for periods of less than one year are not annualized.

For a portion of the periods, the fund had expense limitations, without which returns would have been lower.

Class B and C share performance reflects conversion to class A shares after eight years.

Comparative annualized index returns For periods ended 3/31/22

Index and Lipper results should be compared with fund performance before sales charge, before CDSC, or at net asset value.

Returns for periods of less than one year are not annualized.

Lipper peer group average is provided by Lipper, a Refinitiv company.

^* The fund’s benchmark, the ICE BofA U.S. Treasury Bill Index, was introduced on 6/30/92, which post-dates the inception of the fund.

^† Over the 6-month, 1-year, 3-year, 5-year, 10-year, and life-of-fund periods ended 3/31/22, there were 97, 96, 89, 82, 29, and 3 funds, respectively, in this Lipper category.

Fund price and distribution information For the six-month period ended 3/31/22

The classification of distributions, if any, is an estimate. Before-sales-charge share value and current dividend rate for class A and M shares, if applicable, do not take into account any sales charge levied at the time of purchase. After-sales-charge share value, current dividend rate, and current 30-day SEC yield, if applicable, are calculated assuming that the maximum sales charge (4.00% for class A shares and 3.25% for class M shares) was levied at the time of purchase. Final distribution information will appear on your year-end tax forms.

¹ Most recent distribution, including any return of capital and excluding capital gains, annualized and divided by share price before or after sales charge at period-end.

² For a portion of the period, the fund had expense limitations, without which yields would have been lower.

³ Based only on investment income and calculated using the maximum offering price for each share class, in accordance with SEC guidelines.

Your fund’s expenses

As a mutual fund investor, you pay ongoing expenses, such as management fees, distribution fees (12b-1 fees), and other expenses. Using the following information, you can estimate how these expenses affect your investment and compare them with the expenses of other funds. You may also pay one-time transaction expenses, including sales charges (loads) and redemption fees, which are not shown in this section and would have resulted in higher total expenses. For more information, see your fund’s prospectus or talk to your financial representative.

Expense ratios

Fiscal year expense information in this table is taken from the most recent prospectus, is subject to change, and may differ from that shown for the annualized expense ratio and in the financial highlights of this report.

Expenses are shown as a percentage of average net assets.

^* Includes one time annualized proxy costs of 0.01%.

Expenses per $1,000

The following table shows the expenses you would have paid on a $1,000 investment in each class of the fund from 10/1/21 to 3/31/22. It also shows how much a $1,000 investment would be worth at the close of the period, assuming actual returns and expenses.

^* Expenses for each share class are calculated using the fund’s annualized expense ratio for each class, which represents the ongoing expenses as a percentage of average net assets for the six months ended 3/31/22. The expense ratio may differ for each share class.

^† Expenses are calculated by multiplying the expense ratio by the average account value for the period; then multiplying the result by the number of days in the period (182); and then dividing that result by the number of days in the year (365).

Estimate the expenses you paid

To estimate the ongoing expenses you paid for the six months ended 3/31/22, use the following calculation method. To find the value of your investment on 10/1/21, call Putnam at 1-800-225-1581.

Compare expenses using the SEC’s method

The Securities and Exchange Commission (SEC) has established guidelines to help investors assess fund expenses. Per these guidelines, the following table shows your fund’s expenses based on a $1,000 investment, assuming a hypothetical 5% annualized return. You can use this information to compare the ongoing expenses (but not transaction expenses or total costs) of investing in the fund with those of other funds. All mutual fund shareholder reports will provide this information to help you make this comparison. Please note that you cannot use this information to estimate your actual ending account balance and expenses paid during the period.

^* Expenses for each share class are calculated using the fund’s annualized expense ratio for each class, which represents the ongoing expenses as a percentage of average net assets for the six months ended 3/31/22. The expense ratio may differ for each share class.

^† Expenses are calculated by multiplying the expense ratio by the average account value for the six-month period; then multiplying the result by the number of days in the six-month period (182); and then dividing that result by the number of days in the year (365).

Consider these risks before investing

Emerging market securities carry illiquidity and volatility risks. Lower-rated bonds may offer higher yields in return for more risk. Funds that invest in government securities are not guaranteed. Mortgage-backed investments, unlike traditional debt investments, are subject to prepayment risk, which means that they may increase in value less than other bonds when interest rates decline and decline in value more than other bonds when interest rates rise.

The fund’s investments in mortgage-backed securities and asset-backed securities, and in certain other securities and derivatives, may be or become illiquid. The fund’s concentration in an industry group comprising mortgage-backed securities may make the fund’s net asset value more susceptible to economic, market, political, and other developments affecting the housing or real estate markets and the servicing of mortgage loans secured by real estate properties. The fund currently has significant investment exposure to commercial mortgage-backed securities. Bond investments are subject to interest-rate risk (the risk of bond prices falling if interest rates rise) and credit risk (the risk of an issuer defaulting on interest or principal payments). Interest-rate risk is generally greater for longer-term bonds, and credit risk is generally greater for below-investment-grade bonds. Risks associated with derivatives include increased investment exposure (which may be considered leverage) and, in the case of over-the-counter instruments, the potential inability to terminate or sell derivatives positions and the potential failure of the other party to the instrument to meet its obligations. Unlike bonds, funds that invest in bonds have fees and expenses. The value of investments in the fund’s portfolio may fall or fail to rise over time for a variety of reasons, including general economic, political, or financial market conditions; investor sentiment and market perceptions; government actions; geopolitical events or changes; and factors related to a specific issuer, geography, industry, or sector. International investing involves currency, economic, and political risks. These and other factors may lead to increased volatility and reduced liquidity in the fund’s portfolio holdings.

Our investment techniques, analyses, and judgments may not produce the outcome we intend. We, or the fund’s other service providers, may experience disruptions or operating errors that could have a negative effect on the fund. You can lose money by investing in the fund.

Terms and definitions

Important terms

Total return shows how the value of the fund’s shares changed over time, assuming you held the shares through the entire period and reinvested all distributions in the fund.

Before sales charge, or net asset value, is the price, or value, of one share of a mutual fund, without a sales charge. Before-sales-charge figures fluctuate with market conditions. They are calculated by dividing the net assets of each class of shares by the number of outstanding shares in the class.

After sales charge is the price of a mutual fund share plus the maximum sales charge levied at the time of purchase. After-sales-charge performance figures shown here assume the 4.00% maximum sales charge for class A shares and 3.25% for class M shares.

Contingent deferred sales charge (CDSC) is generally a charge applied at the time of the redemption of class B or C shares and assumes redemption at the end of the period. Your fund’s class B CDSC declines over time from a 5% maximum during the first year to 1% during the sixth year. After the sixth year, the CDSC no longer applies. The CDSC for class C shares is 1% for one year after purchase.

Share classes

Class A shares are generally subject to an initial sales charge and no CDSC (except on certain redemptions of shares bought without an initial sales charge).

Class B shares are closed to new investments and are only available by exchange from class B shares of another Putnam fund or through dividend and/or capital gains reinvestment. They are not subject to an initial sales charge and may be subject to a CDSC.

Class C shares are not subject to an initial sales charge and are subject to a CDSC only if the shares are redeemed during the first year.

Class M shares have a lower initial sales charge and a higher 12b-1 fee than class A shares and no CDSC. They are only available to individuals purchasing shares of the fund from Japanese distributors that have selling agreements with Putnam Retail Management.

Class R shares are not subject to an initial sales charge or CDSC and are only available to employer-sponsored retirement plans.

Class R6 shares are not subject to an initial sales charge or CDSC and carry no 12b-1 fee. They are generally only available to employer-sponsored retirement plans, corporate and institutional clients, and clients in other approved programs.

Class Y shares are not subject to an initial sales charge or CDSC and carry no 12b-1 fee. They are generally only available to corporate and institutional clients and clients in other approved programs.

Fixed-income terms

Current rate is the annual rate of return earned from dividends or interest of an investment. Current rate is expressed as a percentage of the price of a security, fund share, or principal investment.

Mortgage-backed security (MBS), also known as a mortgage “pass-through,” is a type of asset-backed security that is secured by a mortgage or collection of mortgages. The following are types of MBSs:

• Agency credit risk transfer (CRT) security is backed by a reference pool of agency mortgages. Unlike a regular agency pass-through, the principal invested in a CRT is not backed by a U.S. government agency. To compensate investors for this risk, a CRT typically offers a higher yield than conventional pass-through securities. Similar to a CMBS, a CRT is structured into various tranches for investors, offering

different levels of risk and yield based on the underlying reference pool.

• Agency “pass-through” has its principal and interest backed by a U.S. government agency, such as the Federal National Mortgage Association (Fannie Mae), Government National Mortgage Association (Ginnie Mae), and Federal Home Loan Mortgage Corporation (Freddie Mac).

• Collateralized mortgage obligation (CMO) represents claims to specific cash flows from pools of home mortgages. The streams of principal and interest payments on the mortgages are distributed to the different classes of CMO interests in “tranches.” Each tranche may have different principal balances, coupon rates, prepayment risks, and maturity dates. A CMO is highly sensitive to changes in interest rates and any resulting change in the rate at which homeowners sell their properties, refinance, or otherwise prepay loans. CMOs are subject to prepayment, market, and liquidity risks.

° Interest-only (IO) security is a type of CMO in which the underlying asset is the interest portion of mortgage, Treasury, or bond payments.

• Non-agency residential mortgage-backed security (RMBS) is an MBS not backed by Fannie Mae, Ginnie Mae, or Freddie Mac. One type of RMBS is an Alt-A mortgage-backed security.

• Commercial mortgage-backed security (CMBS) is secured by the loan on a commercial property.

Yield curve is a graph that plots the yields of bonds with equal credit quality against their differing maturity dates, ranging from shortest to longest. It is used as a benchmark for other debt, such as mortgage or bank lending rates.

Comparative indexes

Bloomberg U.S. Aggregate Bond Index is an unmanaged index of U.S. investment-grade fixed-income securities.

CMBX Index is an unmanaged index that tracks the performance of a basket of CMBS issued in a particular year.

ICE BofA (Intercontinental Exchange Bank of America) U.S. Treasury Bill Index is an unmanaged index that tracks the performance of U.S. dollar-denominated U.S. Treasury Bills publicly issued in the U.S. domestic market. Qualifying securities must have a remaining term of at least one month to final maturity and a minimum amount outstanding of $1 billion.

S&P 500^® Index is an unmanaged index of common stock performance.

Indexes assume reinvestment of all distributions and do not account for fees. Securities and performance of a fund and an index will differ. You cannot invest directly in an index.

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. Neither Bloomberg nor Bloomberg’s licensors approve or endorse this material, or guarantee the accuracy or completeness of any information herein, or make 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.

ICE Data Indices, LLC (“ICE BofA”), used with permission. ICE BofA permits use of the ICE BofA indices and related data on an “as is” basis; makes no warranties regarding same; does not guarantee the suitability, quality, accuracy, timeliness, and/or completeness of the ICE BofA indices or any data included in, related to, or derived therefrom; assumes no liability in connection with the use of the foregoing; and does not sponsor, endorse, or recommend Putnam Investments, or any of its products or services.

Lipper, a Refinitiv company, is a third-party industry-ranking entity that ranks mutual funds. Its rankings do not reflect sales charges. Lipper rankings are based on total return at net asset value relative to other funds that have similar current investment styles or objectives as determined by Lipper. Lipper may change a fund’s category assignment at its discretion. Lipper category averages reflect performance trends for funds within a category.

Other information for shareholders

Important notice regarding delivery of shareholder documents

In accordance with Securities and Exchange Commission (SEC) regulations, Putnam sends a single notice of internet availability, or a single printed copy, of annual and semiannual shareholder reports, prospectuses, and proxy statements to Putnam shareholders who share the same address, unless a shareholder requests otherwise. If you prefer to receive your own copy of these documents, please call Putnam at 1-800-225-1581, and Putnam will begin sending individual copies within 30 days.

Proxy voting

Putnam is committed to managing our mutual funds in the best interests of our shareholders. The Putnam funds’ proxy voting guidelines and procedures, as well as information regarding how your fund voted proxies relating to portfolio securities during the 12-month period ended June 30, 2021, are available in the Individual Investors section of putnam.com and on the SEC’s website, www.sec.gov. If you have questions about finding forms on the SEC’s website, you may call the SEC at 1-800-SEC-0330. You may also obtain the Putnam funds’ proxy voting guidelines and procedures at no charge by calling Putnam’s Shareholder Services at 1-800-225-1581.

Fund portfolio holdings

The fund will file a complete schedule of its portfolio holdings with the SEC for the first and third quarters of each fiscal year on Form N-PORT within 60 days of the end of such fiscal quarter. Shareholders may obtain the fund’s Form N-PORT on the SEC’s website at www.sec.gov.

Prior to its use of Form N-PORT, the fund filed its complete schedule of its portfolio holdings with the SEC on Form N-Q, which is available online at www.sec.gov.

Trustee and employee fund ownership

Putnam employees and members of the Board of Trustees place their faith, confidence, and, most importantly, investment dollars in Putnam mutual funds. As of March 31, 2022, Putnam employees had approximately $530,000,000 and the Trustees had approximately $77,000,000 invested in Putnam mutual funds. These amounts include investments by the Trustees’ and employees’ immediate family members as well as investments through retirement and deferred compensation plans.

Financial statements

These sections of the report, as well as the accompanying Notes, constitute the fund’s financial statements.

The fund’s portfolio lists all the fund’s investments and their values as of the last day of the reporting period. Holdings are organized by asset type and industry sector, country, or state to show areas of concentration and diversification.

Statement of assets and liabilities shows how the fund’s net assets and share price are determined. All investment and non-investment assets are added together. Any unpaid expenses and other liabilities are subtracted from this total. The result is divided by the number of shares to determine the net asset value per share, which is calculated separately for each class of shares. (For funds with preferred shares, the amount subtracted from total assets includes the liquidation preference of preferred shares.)

Statement of operations shows the fund’s net investment gain or loss. This is done by first adding up all the fund’s earnings — from dividends and interest income — and subtracting its operating expenses to determine net investment income (or loss). Then, any net gain or loss the fund realized on the sales of its holdings — as well as any unrealized gains or losses over the period — is added to or subtracted from the net investment result to determine the fund’s net gain or loss for the fiscal period.

Statement of changes in net assets shows how the fund’s net assets were affected by the fund’s net investment gain or loss, by distributions to shareholders, and by changes in the number of the fund’s shares. It lists distributions and their sources (net investment income or realized capital gains) over the current reporting period and the most recent fiscal year-end. The distributions listed here may not match the sources listed in the Statement of operations because the distributions are determined on a tax basis and may be paid in a different period from the one in which they were earned. Dividend sources are estimated at the time of declaration. Actual results may vary. Any non-taxable return of capital cannot be determined until final tax calculations are completed after the end of the fund’s fiscal period.

Financial highlights provide an overview of the fund’s investment results, per-share distributions, expense ratios, net investment income ratios, and portfolio turnover in one summary table, reflecting the five most recent reporting periods. In a semiannual report, the highlights table also includes the current reporting period.