Putnam Money Market Fund NCSR Certified annual shareholder report (management investment company)


	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:	(811-02608)


	Exact name of registrant as specified in charter:	Putnam Money Market Fund


	Address of principal executive offices:	100 Federal Street, Boston, Massachusetts 02110


	Name and address of agent for service:	Stephen Tate, Vice President 100 Federal Street Boston, Massachusetts 02110


	Copy to:	Bryan Chegwidden, Esq. Ropes & Gray LLP 1211 Avenue of the Americas New York, New York 10036


		James E. Thomas, Esq. Ropes & Gray LLP 800 Boylston Street Boston, Massachusetts 02199


	Registrant’s telephone number, including area code:	(617) 292-1000


	Date of fiscal year end:	September 30, 2023


	Date of reporting period:	October 1 , 2022 – September 30, 2023


	Item 1. Report to Stockholders:


	The following is a copy of the report transmitted to stockholders pursuant to Rule 30e-1 under the Investment Company Act of 1940:

Message from the Trustees

November 3, 2023

Dear Fellow Shareholder:

Equity markets have risen from the depths of the 2022 downturn over the past 12 months. At the same time, the U.S. economy has continued to grow. However, both stocks and bonds have encountered headwinds recently. With the rate of inflation above the Federal Reserve’s target of 2%, the Fed has made it clear that short-term interest rates will remain high heading into 2024. Many experts believe the Fed’s restrictive policy keeps the risk of a recession alive.

Turning to bond markets, performance has been mostly lackluster over the past 12 months. The rise in bond yields since July has challenged many fixed income assets. Against this backdrop, investors are weighing the impact of high borrowing costs and tighter lending conditions at banks.

As active managers, your investment team continues to research attractive opportunities for your fund while monitoring risks. This report offers an update on their efforts.

Thank you for investing with Putnam.

Your fund at a glance

Allocations are shown as a percentage of the fund’s net assets as of 9/30/23. Cash and net other assets, if any, represent the market value weights of cash and other unclassified assets in the portfolio. Summary information may differ from the portfolio schedule included in the financial statements due to the inclusion of any interest accruals, the exclusion of as-of trades, if any, the use of different classifications of securities for presentation purposes, and rounding. Holdings and allocations may vary over time. Due to rounding, percentages may not equal 100%.

The cash and net other assets category may show a negative market value percentage as a result of the timing of trade-date versus settlement-date transactions.

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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


	Class A	Class B	Class C	Class R
Total annual operating expenses for the fiscal year
ended 9/30/22	0.47%	0.47%	0.47%	0.47%
Annualized expense ratio for the six-month period
ended 9/30/23^*	0.46%	0.46%	0.46%	0.46%

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.

^*Expense ratios for each class are for the fund’s most recent fiscal half year. As a result of this, ratios may differ from expense ratios based on one-year data in the financial highlights.

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 4/1/23 to 9/30/23. It also shows how much a $1,000 investment would be worth at the close of the period, assuming actual returns and expenses.


	Class A	Class B	Class C	Class R
Expenses paid per $1,000^*†	$2.33	$2.33	$2.33	$2.33
Ending value (after expenses)	$1,024.70	$1,024.70	$1,024.70	$1,024.70

^*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 9/30/23. 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 (183); and then dividing that result by the number of days in the year (365).

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Estimate the expenses you paid

To estimate the ongoing expenses you paid for the six months ended 9/30/23, use the following calculation method. To find the value of your investment on 4/1/23, 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.


	Class A	Class B	Class C	Class R
Expenses paid per $1,000^*†	$2.33	$2.33	$2.33	$2.33
Ending value (after expenses)	$1,022.76	$1,022.76	$1,022.76	$1,022.76

^†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 (183); and then dividing that result by the number of days in the year (365).

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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 or, for exchange-traded funds only, 1-833-228-5577. We will begin sending individual copies within 30 days.

Proxy voting

Putnam is committed to managing our 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, 2023, 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 or, for exchange-traded funds only, 1-833-228-5577.

Fund portfolio holdings

The fund files monthly portfolio information with the SEC on Form N-MFP. The fund’s Form N-MFP reports are available on the SEC’s website 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 funds. As of September 30, 2023, Putnam employees had approximately $477,000,000 and the Trustees had approximately $65,000,000 invested in Putnam funds. These amounts include investments by the Trustees’ and employees’ immediate family members as well as investments through retirement and deferred compensation plans.

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Important notice regarding Putnam’s privacy policy

In order to conduct business with our shareholders, we must obtain certain personal information such as account holders’ names, addresses, Social Security numbers, and dates of birth. Using this information, we are able to maintain accurate records of accounts and transactions.

It is our policy to protect the confidentiality of our shareholder information, whether or not a shareholder currently owns shares of our funds. In particular, it is our policy not to sell information about you or your accounts to outside marketing firms. We have safeguards in place designed to prevent unauthorized access to our computer systems and procedures to protect personal information from unauthorized use.

Under certain circumstances, we must share account information with outside vendors who provide services to us, such as mailings and proxy solicitations. In these cases, the service providers enter into confidentiality agreements with us, and we provide only the information necessary to process transactions and perform other services related to your account. Finally, it is our policy to share account information with your financial representative, if you’ve listed one on your Putnam account.

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Trustee approval of management contracts

Consideration of your fund’s new and interim management and sub-management contracts

At their meeting on June 23, 2023, the Board of Trustees of your fund, including all of the Trustees who are not “interested persons” (as this term is defined in the Investment Company Act of 1940, as amended (the “1940 Act”)) of the Putnam mutual funds, closed-end funds and exchange-traded funds (collectively, the “funds”) (the “Independent Trustees”) approved, subject to approval by your fund’s shareholders, a new management contract with Putnam Investment Management (“Putnam Management”) and a new sub-management contract between Putnam Management and its affiliate, Putnam Investments Limited (“PIL”) (collectively, the “New Management Contracts”). The Trustees considered the proposed New Management Contracts in connection with the planned acquisition of Putnam U.S. Holdings I, LLC (“Putnam Holdings”) by a subsidiary of Franklin Resources, Inc. (“Franklin Templeton”). The Trustees considered that, on May 31, 2023, Franklin Templeton and Great-West Lifeco Inc., the parent company of Putnam Holdings, announced that they had entered into a definitive agreement for a subsidiary of Franklin Templeton to acquire Putnam Holdings in a stock and cash transaction (the “Transaction”). The Trustees noted that Putnam Holdings was the parent company of Putnam Management and PIL. The Trustees were advised that the Transaction would result in a “change of control” of Putnam Management and PIL and would cause your fund’s current Management Contract with Putnam Management and Sub-Management Contract with PIL (collectively, the “Current Management Contracts”) to terminate in accordance with the 1940 Act. The Trustees considered that the New Management Contracts would take effect upon the closing of the Transaction, which was expected to occur in the fourth quarter of 2023.

In addition to the New Management Contracts, the Trustees also approved interim management and sub-management contracts with Putnam Management and PIL, respectively (the “Interim Management Contracts”), which would take effect in the event that for any reason shareholder approval of a New Management Contract was not received by the time of the Transaction closing. The Trustees considered that each Interim Management Contract that became effective would remain in effect until shareholders approved the proposed New Management Contract, or until 150 days elapse after the closing of the Transaction, whichever occurred first. The considerations and conclusions discussed in connection with the Trustees’ consideration of the New Management Contracts and the continuance of your fund’s Current Management Contracts also apply to the Trustees’ consideration of the Interim Management Contracts, supplemented by consideration of the terms, nature and reason for any Interim Management Contract.

The Independent Trustees met with their independent legal counsel, as defined in Rule 0 – 1(a)(6) under the 1940 Act (their “independent legal counsel”), and representatives of Putnam Management and its parent company, Power Corporation of Canada, to discuss the potential Transaction, including the timing and structure of the Transaction and its implications for Putnam Management and the funds, during their regular meeting on November 18, 2022, and the full Board of Trustees further discussed these matters with representatives of Putnam Management at its regular meeting on December 15, 2022. At a special meeting on December 20, 2022, the full Board of Trustees met with representatives of Putnam Management, Power Corporation of Canada and Franklin Templeton to further discuss the potential Transaction, including Franklin Templeton’s strategic plans for Putnam Management’s asset management business and the funds, potential sources of synergy between Franklin Templeton and Putnam Management, potential areas of partnership between Power Corporation of Canada and Franklin Templeton, Franklin Templeton’s distribution capabilities, Franklin Templeton’s existing service provider relationships and Franklin Templeton’s recent acquisitions of other asset management firms.

In order to assist the Independent Trustees in their consideration of the New Management Contracts and other anticipated impacts of the Transaction on the funds and their shareholders, independent legal counsel for the Independent Trustees furnished an initial information request to Franklin Templeton (the “Initial Franklin Request”). At a special meeting of the full Board of Trustees held on January 25, 2023, representatives of Franklin Templeton addressed the firm’s responses to the Initial Franklin Request. At the

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meeting, representatives of Franklin Templeton discussed, among other things, the business and financial condition of Franklin Templeton and its affiliates, Franklin Templeton’s U.S. registered fund operations, its recent acquisition history, Franklin Templeton’s intentions regarding the operation of Putnam Management and the funds following the completion of the potential Transaction and expected benefits to the funds and Putnam Management that might result from the Transaction.

The Board of Trustees actively monitored developments with respect to the potential Transaction throughout the period leading up to the public announcement of a final sale agreement on May 31, 2023. The Independent Trustees met to discuss these matters at their regular meetings on January 27, April 20 and May 19, 2023. The full Board of Trustees also discussed developments at their regular meeting on February 23, 2023. Following the public announcement of the Transaction on May 31, 2023, independent legal counsel for the Independent Trustees furnished a supplemental information request (the “Supplemental Franklin Request”) to Franklin Templeton. At the Board of Trustees’ regular in-person meeting held on June 22–23, 2023, representatives of Putnam Management and Power Corporation of Canada provided further information regarding, among other matters, the final terms of the Transaction and efforts undertaken to retain Putnam employees. The Contract Committee of the Board of Trustees also met on June 22, 2023 to discuss Franklin Templeton’s responses to the Supplemental Franklin Request. Mr. Reynolds, the only Trustee affiliated with Putnam Management, participated in portions of these meetings to provide the perspective of the Putnam organization, but did not otherwise participate in the deliberations of the Independent Trustees or the Contract Committee regarding the potential Transaction.

After the presentations and after reviewing the written materials provided, the Independent Trustees met at their in-person meeting on June 23, 2023 to consider the New Management Contracts for each fund, proposed to become effective upon the closing of the Transaction, and the filing of a preliminary proxy statement. At this meeting and throughout the process, the Independent Trustees also received advice from their independent legal counsel regarding their responsibilities in evaluating the potential Transaction and the New Management Contracts. The Independent Trustees reviewed the terms of the proposed New Management Contracts and the differences between the New Management Contracts and the Current Management Contracts. They noted that the terms of the proposed New Management Contracts were substantially identical to the Current Management Contracts, except for certain changes designed largely to address differences among various of the existing contracts, which had been developed and implemented at different times in the past.

In considering the approval of the proposed New Management Contracts, the Board of Trustees took into account a number of factors, including:¹

(i) Franklin Templeton’s and Putnam Management’s belief that the Transaction would not adversely affect the funds or their shareholders and their belief that the Transaction was likely to result in certain benefits (described below) for the funds and their shareholders;

(ii) That Franklin Templeton did not intend to make any material change in Putnam Management’s senior investment professionals (other than certain changes related to reporting structure and organization of personnel discussed below), including the portfolio managers of the funds, or to the firm’s operating locations as a result of the Transaction;

(iii) That Franklin Templeton intended for Putnam Management’s equity investment professionals to continue to operate largely independently from Franklin Templeton, reporting to Franklin Templeton’s Head of Public Markets following the Transaction;

(iv) That, while Putnam Management’s organizational structure was not expected to change immediately following the Transaction, Franklin Templeton intended to revise Putnam Management’s reporting structure in order to include Putnam Management’s fixed income investment professionals in Franklin Templeton’s fixed income group and to include Putnam Management’s Global Asset Allocation (“GAA”) investment professionals in Franklin Templeton’s investment solutions group, with both Franklin Templeton groups reporting to Franklin Templeton’s Head of Public Markets;

¹ All subsequent references to Putnam Management describing the Board of Trustees’ considerations should be deemed to include references to PIL as necessary or appropriate in the context.

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(v) Franklin Templeton’s expectation that there would not be any changes in the investment objectives, strategies or portfolio holdings of the funds as a result of the Transaction;

(vi) That neither Franklin Templeton nor Putnam Management had any current plans to propose changes to the funds’ existing management fees or expense limitations, or current plans to make changes to the funds’ existing distribution arrangements;

(vii) Franklin Templeton’s and Putnam Management’s representations that, following the Transaction, there was not expected to be any diminution in the nature, quality and extent of services provided to the funds and their shareholders by Putnam Management and PIL, including compliance and other non-advisory services;

(viii) That Franklin Templeton did not currently plan to change the branding of the funds or to change the lineup of funds in connection with the Transaction but would continue to evaluate how best to position the funds in the market;

(ix) The possible benefits accruing to the funds and their shareholders as a result of the Transaction, including:

a. That the scale of Franklin Templeton’s investment operations platform would increase the investment and operational resources available to the funds;

b. That the Putnam open-end funds would benefit from Franklin Templeton’s large retail and institutional global distribution capabilities and significant network of intermediary relationships, which may provide additional opportunities for the funds to increase assets and reduce expenses by spreading expenses over a larger asset base; and

c. Potential benefits to shareholders of the Putnam open-end funds that could result from the alignment of certain fund features and shareholder benefits with those of other funds sponsored by Franklin Templeton and its affiliates and access to a broader array of investment opportunities;

(x) The financial strength, reputation, experience and resources of Franklin Templeton and its investment advisory subsidiaries;

(xi) Franklin Templeton’s expectation that the Transaction would not impact the capabilities or responsibilities of Putnam Management’s

Investment Division (other than any impact related to reporting structure changes for Putnam Management’s equity, fixed income and GAA investment groups and to including Putnam Management’s fixed income and GAA investment professionals in existing Franklin Templeton investment groups, as discussed above) and that any changes to the Investment Division over the longer term would be made in order to achieve perceived operational efficiencies or improvements to the portfolio management process;

(xii) Franklin Templeton’s commitment to maintaining competitive compensation arrangements to allow Putnam Management to continue to attract and retain highly qualified personnel and Putnam Management’s and Franklin Templeton’s efforts to retain personnel, including efforts implemented since the Transaction was announced;

(xiii) That the current senior management teams at Putnam Management and Power Corporation of Canada had indicated their strong support of the Transaction and that Putnam Management had recommended that the Board of Trustees approve the New Management Contracts; and

(xiv) Putnam Management’s and Great-West Lifeco Inc.’s commitment to bear all expenses incurred by the funds in connection with the Transaction, including all costs associated with the proxy solicitation in connection with seeking shareholder approval of the New Management Contracts.

Finally, in considering the proposed New Management Contracts, the Board of Trustees also took into account their concurrent deliberations and conclusions, as described below, in connection with their annual review of the funds’ Current Management Contracts and the approval of their continuance, effective July 1, 2023, and the extensive materials that they had reviewed in connection with that review process.

Based upon the foregoing considerations, on June 23, 2023, the Board of Trustees, including all of the Independent Trustees, unanimously approved the proposed New Management Contracts and determined to recommend their approval to the shareholders of the funds.

General conclusions — Current
Management Contracts

The Board of Trustees oversees the management of each fund and, as required by law, determines annually whether to approve the continuance of

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your fund’s management contract with Putnam Management and the sub-management contract with respect to your fund between Putnam Management and PIL. (Because PIL is an affiliate of Putnam Management and Putnam Management remains fully responsible for all services provided by PIL, the Trustees did not attempt to evaluate PIL as a separate entity.) The Board of Trustees, with the assistance of its Contract Committee, requests and evaluates all information it deems reasonably necessary under the circumstances in connection with its annual contract review. The Contract Committee consists solely of Independent Trustees.

At the outset of the review process, members of the Board of Trustees’ independent staff and independent legal counsel considered any possible changes to the annual contract review materials furnished to the Contract Committee during the course of the previous year’s review and, as applicable, identified those changes to Putnam Management. Following these discussions and in consultation with the Contract Committee, the Independent Trustees’ independent legal counsel requested that Putnam Management and its affiliates furnish specified information, together with any additional information that Putnam Management considered relevant, to the Contract Committee. Over the course of several months ending in June 2023, the Contract Committee met on a number of occasions with representatives of Putnam Management, and separately in executive session, to consider the information that Putnam Management provided. Throughout this process, the Contract Committee was assisted by the members of the Board of Trustees’ independent staff and by independent legal counsel for the funds and the Independent Trustees.

At the Board of Trustees’ June 2023 meeting, the Contract Committee met in executive session to discuss and consider its recommendations with respect to the continuance of the contracts. At that meeting, the Contract Committee also met in executive session with the other Independent Trustees to review a summary of the key financial, performance and other data that the Contract Committee considered in the course of its review. The Contract Committee recommended, and the Independent Trustees approved, the continuance of your fund’s Current Management Contracts, effective July 1, 2023, and the approval of your fund’s New Management Contracts and Interim Management Contracts, as discussed above.

The Independent Trustees’ approvals were based on the following conclusions:

• That the fee schedule in effect for your fund represented reasonable compensation in light of the nature and quality of the services being provided to the fund, the fees paid by competitive funds, the costs incurred by Putnam Management in providing services to the fund and the application of certain reductions and waivers noted below; and

• That the fee schedule in effect for your fund represented an appropriate sharing between fund shareholders and Putnam Management of any economies of scale as may exist in the management of the fund at current asset levels.

These conclusions were based on a comprehensive consideration of all information provided to the Trustees and were not the result of any single factor. Some of the factors that figured particularly in the Trustees’ deliberations and how the Trustees considered these factors are described below, although individual Trustees may have evaluated the information presented differently, giving different weights to various factors. It is also important to recognize that the management arrangements for your fund and the other Putnam mutual funds and closed-end funds are the result of many years of review and discussion between the Independent Trustees and Putnam Management, that some aspects of the arrangements may receive greater scrutiny in some years than others and that the Trustees’ conclusions may be based, in part, on their consideration of fee arrangements in previous years. For example, with certain exceptions primarily involving newer funds (including the exchange-traded funds) or repositioned funds, the current fee arrangements under the vast majority of the funds’ management contracts were first implemented at the beginning of 2010 following extensive review by the Contract Committee and discussions with representatives of Putnam Management, as well as approval by shareholders. The Trustees also took into account their concurrent deliberations and conclusions, and the materials that they had reviewed, in connection with their approval on June 23, 2023 of the Interim Management Contracts and the New Management Contracts, which had been proposed in light of the Transaction (which would cause the fund’s Current Management Contracts to terminate in accordance with applicable law or the terms of each contract).

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Management fee schedules
and total expenses

The Trustees reviewed the management fee schedules in effect for all funds, including fee levels and any breakpoints. Under its management contract, your fund has the benefit of breakpoints in its management fee schedule that provide shareholders with reduced fee levels as assets under management in the Putnam family of funds increase. The Trustees also reviewed the total expenses of each Putnam fund, recognizing that in most cases management fees represented the major, but not the sole, determinant of total costs to fund shareholders. (Two mutual funds and each of the exchange-traded funds have implemented so-called “all-in” or unitary management fees covering substantially all routine fund operating costs.)

In reviewing fees and expenses, the Trustees generally focus their attention on material changes in circumstances — for example, changes in assets under management, changes in a fund’s investment strategy, changes in Putnam Management’s operating costs or profitability, or changes in competitive practices in the fund industry —that suggest that consideration of fee changes might be warranted. The Trustees concluded that the circumstances did not indicate that changes to the management fee schedule for your fund would be appropriate at this time.

As in the past, the Trustees also focused on the competitiveness of each fund’s total expense ratio. The Trustees, Putnam Management and the funds’ investor servicing agent, Putnam Investor Services, Inc. (“PSERV”), have implemented expense limitations that were in effect during your fund’s fiscal year ending in 2022. These expense limitations were: (i) a contractual expense limitation applicable to specified mutual funds, including your fund, of 25 basis points on investor servicing fees and expenses and (ii) a contractual expense limitation applicable to specified mutual funds, including your fund, of 20 basis points on so-called “other expenses” (i.e., all expenses exclusive of management fees, distribution fees, investor servicing fees, investment-related expenses, interest, taxes, brokerage commissions, acquired fund fees and expenses and extraordinary expenses). These expense limitations attempt to maintain competitive expense levels for the funds. Most funds, including your fund, had sufficiently low expenses that these expense limitations were not operative during their fiscal years ending in 2022. Putnam Management and PSERV have agreed to maintain these expense limitations until at least January 30, 2025. Putnam Management and PSERV’s commitment to these expense limitation arrangements, which were intended to support an effort to have the mutual fund expenses meet competitive standards, was an important factor in the Trustees’ decision to approve your fund’s New Management Contracts and Interim Management Contracts and the continuance of your fund’s Current Management Contracts.

The Trustees reviewed comparative fee and expense information for a custom group of competitive funds selected by Broadridge Financial Solutions, Inc. (“Broadridge”). This comparative information included your fund’s percentile ranking for effective management fees and total expenses (excluding any applicable 12b-1 fees), which provides a general indication of your fund’s relative standing. In the custom peer group, your fund ranked in the first quintile in effective management fees (determined for your fund and the other funds in the custom peer group based on fund asset size and the applicable contractual management fee schedule) and in the fourth quintile in total expenses (excluding any applicable 12b-1 fees) as of December 31, 2022. The first quintile represents the least expensive funds and the fifth quintile the most expensive funds. The fee and expense data reported by Broadridge as of December 31, 2022 reflected the most recent fiscal year-end data available in Broadridge’s database at that time.

In connection with their review of fund management fees and total expenses, the Trustees also reviewed the costs of the services provided and the profits realized by Putnam Management and its affiliates from their contractual relationships with the funds. This information included trends in revenues, expenses and profitability of Putnam Management and its affiliates relating to the investment management, investor servicing and distribution services provided to the funds, as applicable. In this regard, the Trustees also reviewed an analysis of the revenues, expenses and profitability of Putnam Management and its affiliates, allocated on a fund-by-fund basis, with respect to (as applicable) the funds’ management, distribution and investor servicing contracts. For each fund, the analysis presented information about revenues, expenses and profitability in 2022 for each of the applicable agreements separately and for the agreements taken together on a

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combined basis. The Trustees concluded that, at current asset levels, the fee schedules in place for each of the funds, including the fee schedule for your fund, represented reasonable compensation for the services being provided and represented an appropriate sharing between fund shareholders and Putnam Management of any economies of scale as may exist in the management of the funds at that time.

The information examined by the Trustees in connection with their annual contract review for the funds included information regarding services provided and fees charged by Putnam Management and its affiliates to other clients, including collective investment trusts offered in the defined contribution and defined benefit retirement plan markets, sub-advised mutual funds, private funds sponsored by affiliates of Putnam Management, model-only separately managed accounts and Putnam Management’s manager-traded separately managed account programs. This information included, in cases where a product’s investment strategy corresponds with a fund’s strategy, comparisons of those fees with fees charged to the funds, as well as an assessment of the differences in the services provided to these clients as compared to the services provided to the funds. The Trustees observed that the differences in fee rates between these clients and the funds are by no means uniform when examined by individual asset sectors, suggesting that differences in the pricing of investment management services to these types of clients may reflect, among other things, historical competitive forces operating in separate marketplaces. The Trustees considered the fact that in many cases fee rates across different asset classes are higher on average for 1940 Act-registered funds than for other clients, and the Trustees also considered the differences between the services that Putnam Management provides to the funds and those that it provides to its other clients. The Trustees did not rely on these comparisons to any significant extent in concluding that the management fees paid by your fund are reasonable.

Investment performance

The quality of the investment process provided by Putnam Management represented a major factor in the Trustees’ evaluation of the quality of services provided by Putnam Management under your fund’s management contract. The Trustees were assisted in their review of Putnam Management’s investment process and performance by the work of the investment oversight committees of the Trustees and the full Board of Trustees, which meet on a regular basis with individual portfolio managers and with senior management of Putnam Management’s Investment Division throughout the year. The Trustees concluded that Putnam Management generally provides a high-quality investment process — based on the experience and skills of the individuals assigned to the management of fund portfolios, the resources made available to them and in general Putnam Management’s ability to attract and retain high-quality personnel — but also recognized that this does not guarantee favorable investment results for every fund in every time period.

The Trustees considered that, in the aggregate, peer-relative and benchmark-relative Putnam fund performance was generally encouraging in 2022 against a backdrop of volatile equity and fixed income markets, driven by factors such as Russia’s invasion of Ukraine, increased tensions with China, disruptions in energy markets and broader supply chains, rising inflation and the significant tightening of monetary policy by the Board of Governors of the Federal Reserve in an effort to combat inflation. The Trustees further noted that, in the face of these numerous economic headwinds, corporate earnings and employment data had been generally robust throughout 2022. For the one-year period ended December 31, 2022, the Trustees noted that the Putnam funds, on an asset-weighted basis, ranked in the 41st percentile of their peers as determined by Lipper Inc. (“Lipper”) and, on an asset-weighted-basis, outperformed their benchmarks by 1.3% gross of fees over the one-year period. The Committee also noted that the funds’ aggregate performance over longer-term periods continued to be strong, with the funds, on an asset-weighted basis, ranking in the 34th, 27th and 22nd percentiles of their Lipper peers over the three-year, five-year and ten-year periods ended December 31, 2022, respectively. The Trustees further noted that the funds, in the aggregate, outperformed their benchmarks on a gross basis for each of the three-year, five-year and ten-year periods. The Trustees also considered the Morningstar Inc. ratings assigned to the funds and that 40 funds were rated four or five stars at the end of 2022, which represented an increase of 15 funds year-over-year. The Trustees also considered that seven funds were five-star rated at the end of 2022, which was a year-over-year decrease of two

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funds, and that 83% of the funds’ aggregate assets were in four- or five-star rated funds at year end.

In addition to the performance of the individual Putnam funds, the Trustees considered, as they had in prior years, the performance of The Putnam Fund complex versus competitor fund complexes, as reported in the Barron’s/Lipper Fund Families survey (the “Survey”). The Trustees noted that the Survey ranks mutual fund companies based on their performance across a variety of asset types, and that The Putnam Fund complex had performed exceptionally well in 2022. In this regard, the Trustees considered that the funds had ranked 9th out of 49 fund companies, 3rd out of 49 fund companies and 2nd out of 47 fund companies for the one-year, five-year and ten-year periods, respectively. The Trustees also noted that The Putnam Fund complex had been the only fund family to rank in the top ten in all three time periods. They also noted, however, the disappointing investment performance of some Putnam funds for periods ended December 31, 2022 and considered information provided by Putnam Management regarding the factors contributing to the underperformance and, where relevant, actions being taken to improve the performance of these particular funds. The Trustees indicated their intention to continue to monitor the performance of those funds.

For purposes of the Trustees’ evaluation of the Putnam funds’ investment performance, the Trustees generally focus on a competitive industry ranking of each fund’s total net return over a one-year, three-year and five-year period. For a number of Putnam funds with relatively unique investment mandates for which Putnam Management informed the Trustees that meaningful competitive performance rankings are not considered to be available, the Trustees evaluated performance based on their total gross and net returns and comparisons of those returns to the returns of selected investment benchmarks. In the case of your fund, the Trustees considered that its class A share cumulative total return performance at net asset value was in the following quartiles of its Lipper peer group (Lipper Money Market Funds) for the one-year, three-year and five-year periods ended December 31, 2022 (the first quartile representing the best-performing funds and the fourth quartile the worst-performing funds):


One-year period	3rd
Three-year period	3rd
Five-year period	2nd

Over the one-year, three-year and five-year periods ended December 31, 2022, there were 86, 85 and 83 funds, respectively, in your fund’s Lipper peer group. (When considering performance information, shareholders should be mindful that past performance is not a guarantee of future results.)

The Trustees also considered Putnam Management’s continued efforts to support fund performance through certain initiatives, including structuring compensation for portfolio managers to enhance accountability for fund performance, emphasizing accountability in the portfolio management process and affirming its commitment to a fundamental-driven approach to investing.

Brokerage and soft-dollar allocations;
distribution and investor servicing

The Trustees considered various potential benefits that Putnam Management may receive in connection with the services it provides under the management contract with your fund. These include benefits related to brokerage allocation and the use of soft dollars, whereby a portion of the commissions paid by a fund for brokerage may be used to acquire research services that are expected to be useful to Putnam Management in managing the assets of the fund and of other clients. Subject to policies established by the Trustees, soft dollars generated by these means are used predominantly to acquire brokerage and research services (including third-party research and market data) that enhance Putnam Management’s investment capabilities and supplement Putnam Management’s internal research efforts. The Trustees indicated their continued intent to monitor regulatory and industry developments in this area with the assistance of their Brokerage Committee. In addition, with the assistance of their Brokerage Committee, the Trustees indicated their continued intent to monitor the allocation of the funds’ brokerage in order to ensure that the principle of seeking best price and execution remains paramount in the portfolio trading process.

Putnam Management may also receive benefits from payments made to Putnam Management’s affiliates by the mutual funds for distribution services and investor services. In conjunction with the review of your fund’s management and sub-management contracts, the Trustees reviewed your fund’s investor servicing agreement with PSERV and its distributor’s contract

Money Market Fund 13

and distribution plans with Putnam Retail Management Limited Partnership (“PRM”), both of which are affiliates of Putnam Management. The Trustees concluded that the fees payable by the mutual funds to PSERV and PRM for such services were fair and reasonable in relation to the nature and quality of such services, the fees paid by competitive funds and the costs incurred by PSERV and PRM in providing such services. Furthermore, the Trustees were of the view that the investor services provided by PSERV were required for the operation of the mutual funds, and that they were of a quality at least equal to those provided by other providers.

14 Money Market Fund

Audited financial statements

These sections of the report, as well as the accompanying Notes, preceded by the Report of Independent Registered Public Accounting Firm, constitute the fund’s audited 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.

Financial highlights provide an overview of the fund’s investment results, per-share distributions, expense ratios, net investment income ratios, and portfolio turnover (not required for money market funds) in one summary table, reflecting the five most recent reporting periods. In a semiannual report, the highlights table also includes the current reporting period.

Money Market Fund 15

Report of Independent Registered Public Accounting Firm

To the Board of Trustees and Shareholders of
Putnam Money Market Fund:

Opinion on the Financial Statements

We have audited the accompanying statement of assets and liabilities, including the fund’s portfolio, of Putnam Money Market Fund (the “Fund”) as of September 30, 2023, the related statement of operations for the year ended September 30, 2023, the statement of changes in net assets for each of the two years in the period ended September 30, 2023, including the related notes, and the financial highlights for each of the five years in the period ended September 30, 2023 (collectively referred to as the “financial statements”). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Fund as of September 30, 2023, the results of its operations for the year then ended, the changes in its net assets for each of the two years in the period ended September 30, 2023 and the financial highlights for each of the five years in the period ended September 30, 2023 in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

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

We conducted our audits of these financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement, whether due to error or fraud.

Our audits included performing procedures to assess the risks of material misstatement of the financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the financial statements. Our procedures included confirmation of securities owned as of September 30, 2023 by correspondence with the custodian and brokers; when replies were not received from brokers, we performed other auditing procedures. We believe that our audits provide a reasonable basis for our opinion.

PricewaterhouseCoopers LLP
Boston, Massachusetts
November 3, 2023

We have served as the auditor of one or more investment companies in the Putnam Investments family of funds since at least 1957. We have not been able to determine the specific year we began serving as auditor.

16 Money Market Fund


The fund’s portfolio 9/30/23


REPURCHASE AGREEMENTS (51.2%)*	Principal amount	Value
Interest in $194,586,000 joint tri-party repurchase agreement dated 9/29/2023 with BofA Securities, Inc. due 10/2/2023 — maturity value of $112,184,526 for an effective yield of 5.300% (collateralized by Agency Mortgage-Backed Securities with coupon rates ranging from 3.000% to 6.000% and due dates ranging from 10/20/2051 to 1/20/2053, valued at $198,477,721)	$112,135,000	$112,135,000
Interest in $339,363,000 joint tri-party repurchase agreement dated 9/29/2023 with Citigroup Global Markets, Inc. due 10/2/2023 — maturity value of $112,149,511 for an effective yield of 5.300% (collateralized by Agency Mortgage-Backed Securities and U.S. Treasuries (including strips) with coupon rates ranging from 1.625% to 4.000% and due dates ranging from 10/31/2023 to 6/1/2052, valued at $346,172,618)	112,100,000	112,100,000
Interest in $200,000,000 joint tri-party repurchase agreement dated 9/29/2023 with JPMorgan Securities, LLC due 10/2/2023 — maturity value of $79,335,090 for an effective yield of 5.310% (collateralized by Agency Mortgage-Backed Securities with coupon rates ranging from zero % to 7.000% and due dates ranging from 1/1/2028 to 9/1/2053, valued at $204,090,270)	79,300,000	79,300,000
Interest in $287,900,000 joint tri-party repurchase agreement dated 9/29/2023 with Royal Bank of Canada due 10/2/2023 — maturity value of $112,149,511 for an effective yield of 5.300% (collateralized by U.S. Treasuries (including strips) with coupon rates ranging from zero % to 5.603% and due dates ranging from 10/19/2023 to 7/15/2032, valued at $293,787,765)	112,100,000	112,100,000
Total repurchase agreements (cost $415,635,000)		$415,635,000


COMMERCIAL PAPER (25.0%)*	Yield (%)	Maturity date	Principal amount	Value
Australia and New Zealand Banking Group, Ltd. (Australia)	5.767	3/25/24	$6,000,000	$5,836,613
Banco Santander SA (Spain)	5.840	3/1/24	8,000,000	7,807,804
Banco Santander SA (Spain)	5.777	12/4/23	8,000,000	7,920,213
Bank of Montreal (Canada)	5.920	8/1/24	8,000,000	8,000,000
Bank of Nova Scotia (The) (Canada)	5.820	2/5/24	7,750,000	7,750,000
BNP Paribas SA/New York, NY (France)	5.763	3/8/24	8,000,000	7,802,840
BPCE SA (France)	5.701	12/7/23	8,000,000	7,917,516
Commonwealth Bank of Australia (Australia)	5.909	9/20/24	4,000,000	3,779,900
Commonwealth Bank of Australia (Australia)	5.830	4/22/24	8,000,000	8,000,000
DNB Bank ASA (Norway)	5.858	6/7/24	6,114,000	5,875,384
DNB Bank ASA (Norway)	5.737	3/25/24	6,983,000	6,792,845
DNB Bank ASA (Norway)	5.361	12/19/23	7,500,000	7,416,309
ING (U.S.) Funding, LLC	5.910	4/24/24	8,000,000	8,001,333
Lloyds Bank PLC (United Kingdom)	5.720	10/16/23	7,750,000	7,750,000
Lloyds Bank PLC (United Kingdom)	5.690	2/6/24	8,000,000	8,000,000
National Australia Bank, Ltd. (Australia)	5.840	9/19/24	8,000,000	8,000,000
National Australia Bank, Ltd. (Australia)	5.810	11/30/23	7,750,000	7,750,000
National Australia Bank, Ltd. (Australia)	5.570	3/6/24	3,750,000	3,744,430
National Bank of Canada (Canada)	5.769	3/15/24	4,250,000	4,140,648
National Bank of Canada (Canada)	5.694	2/15/24	3,390,000	3,318,142
National Bank of Canada (Canada)	5.481	10/31/23	5,800,000	5,773,755
Nordea Bank ABP (Finland)	5.730	10/10/23	7,750,000	7,749,884
Rabobank Nederland NV/NY (Netherlands)	5.844	6/14/24	8,000,000	7,680,178
Royal Bank of Canada/New York, NY (Canada)	5.920	5/23/24	8,000,000	8,000,000


Money Market Fund 17


COMMERCIAL PAPER (25.0%)* cont.	Yield (%)	Maturity date	Principal amount	Value
Royal Bank of Canada/New York, NY (Canada)	5.485	12/7/23	$3,750,000	$3,713,708
Svenska Handelsbanken AB (Sweden)	5.251	11/13/23	7,500,000	7,454,760
Toronto-Dominion Bank (The) (Canada)	6.040	10/2/23	7,250,000	7,250,000
Toyota Credit de Puerto Rico Corp. (Puerto Rico)	5.653	11/17/23	8,000,000	7,942,556
Westpac Banking Corp. (Australia)	5.840	1/3/24	4,100,000	4,100,833
Westpac Banking Corp. (Australia)	5.162	10/10/23	7,500,000	7,490,681
Total commercial paper (cost $202,760,332)				$202,760,332


CERTIFICATES OF DEPOSIT (17.4%)*	Yield (%)	Maturity date	Principal amount	Value
Bank of America, NA FRN	5.970	6/3/24	$8,000,000	$8,000,000
Bank of America, NA FRN	5.780	5/7/24	4,000,000	4,000,000
Bank of Montreal/Chicago, IL (Canada)	5.000	10/6/23	7,750,000	7,750,000
Bank of Montreal/Chicago, IL FRN (Canada)	5.960	7/22/24	4,000,000	4,000,000
BNP Paribas SA/New York, NY FRN (France)	5.770	10/10/23	7,750,000	7,750,000
Canadian Imperial Bank of Commerce/New York, NY FRN	5.920	5/8/24	8,000,000	8,000,000
Citibank, NA	6.170	10/25/23	3,750,000	3,750,000
Citibank, NA	6.000	9/20/24	4,000,000	4,000,000
Citibank, NA	5.780	3/8/24	8,000,000	8,000,000
Cooperatieve Rabobank UA/NY FRN (Netherlands)	5.780	10/31/23	7,750,000	7,750,000
Credit Agricole Corporate and Investment Bank/New York FRN (France)	5.820	5/3/24	8,000,000	8,000,000
Mizuho Bank, Ltd./New York, NY FRN	5.760	1/18/24	8,000,000	8,000,000
MUFG Bank, Ltd./New York, NY FRN (Japan)	5.730	11/13/23	8,000,000	8,000,000
Sumitomo Mitsui Banking Corp./New York FRN (Japan)	5.740	11/17/23	7,750,000	7,750,000
Sumitomo Mitsui Trust Bank, Ltd./New York FRN	5.740	1/10/24	8,000,000	8,000,000
Toronto-Dominion Bank/NY (Canada)	6.050	7/10/24	4,000,000	4,000,000
Toronto-Dominion Bank/NY FRN (Canada)	5.890	9/12/24	8,000,000	8,000,000
Truist Bank	5.110	10/31/23	7,500,000	7,500,000
Wells Fargo Bank, NA FRN	5.970	7/5/24	4,000,000	4,000,000
Wells Fargo Bank, NA FRN	5.950	4/5/24	7,750,000	7,750,000
Westpac Banking Corp./NY (Australia)	5.840	8/2/24	6,970,000	6,970,188
Total certificates of deposit (cost $140,970,188)				$140,970,188


ASSET-BACKED COMMERCIAL PAPER (6.3%)*	Yield (%)	Maturity date	Principal amount	Value
Barclays Bank PLC CCP (United Kingdom)	5.480	11/1/23	$4,000,000	$3,981,228
Chariot Funding, LLC	5.590	10/18/23	7,900,000	7,879,519
Chariot Funding, LLC	5.446	10/24/23	8,000,000	7,972,400
Collateralized Commercial Paper FLEX Co., LLC	5.790	1/2/24	8,000,000	7,999,981
Liberty Street Funding, LLC (Canada)	5.514	11/27/23	5,000,000	4,956,933
Old Line Funding, LLC	5.666	2/5/24	8,000,000	7,843,367
Sheffield Receivables Co., LLC (United Kingdom)	5.436	10/12/23	4,500,000	4,492,575
Victory Receivables Corp. (Japan)	5.554	10/27/23	5,997,000	5,973,267
Total asset-backed commercial paper (cost $51,099,270)				$51,099,270


TOTAL INVESTMENTS
Total investments (cost $810,464,790)	$810,464,790


18 Money Market Fund


Key to holding’s abbreviations
FRN	Floating Rate Notes: The rate shown is the current interest rate or yield at the close of the reporting period. Rates may be subject to a cap or floor. For certain securities, the rate may represent a fixed rate currently in place at the close of the reporting period.


Notes to the fund’s portfolio
	Unless noted otherwise, the notes to the fund’s portfolio are for the close of the fund’s reporting period, which ran from October 1, 2022 through September 30, 2023 (the reporting period). Within the following notes to the portfolio, references to “Putnam Management” represent Putnam Investment Management, LLC, the fund’s manager, an indirect wholly-owned subsidiary of Putnam Investments, LLC and references to “ASC 820” represent Accounting Standards Codification 820 Fair Value Measurements and Disclosures.
^*	Percentages indicated are based on net assets of $811,201,612.
	The dates shown on debt obligations are the original maturity dates.


DIVERSIFICATION BY COUNTRY
Distribution of investments by country of risk at the close of the reporting period, excluding collateral received, if any (as a percentage of Portfolio Value):
United States	64.9%	Spain	1.9%
Canada	9.5	Netherlands	1.9
Australia	6.9	Puerto Rico	1.0
France	3.9	Finland	0.9
United Kingdom	3.0	Sweden	0.9
Japan	2.7	Total	100.0%
Norway	2.5

ASC 820 establishes a three-level hierarchy for disclosure of fair value measurements. The valuation hierarchy is based upon the transparency of inputs to the valuation of the fund’s investments. The three levels are defined as follows:

Level 1: Valuations based on quoted prices for identical securities in active markets.

Level 2: Valuations based on quoted prices in markets that are not active or for which all significant inputs are observable, either directly or indirectly.

Level 3: Valuations based on inputs that are unobservable and significant to the fair value measurement.

The following is a summary of the inputs used to value the fund’s net assets as of the close of the reporting period:


		Valuation inputs
Investments in securities:	Level 1	Level 2	Level 3
Asset-backed commercial paper	$—	$51,099,270	$—
Certificates of deposit	—	140,970,188	—
Commercial paper	—	202,760,332	—
Repurchase agreements	—	415,635,000	—
Totals by level	$—	$810,464,790	$—

The accompanying notes are an integral part of these financial statements.


Money Market Fund 19

Statement of assets and liabilities 9/30/23


ASSETS
Investment in securities, at value (Note 1):
Unaffiliated issuers (at amortized cost)	$394,829,790
Repurchase agreements (identified cost $415,635,000)	415,635,000
Cash	98,118
Interest and other receivables	2,542,253
Receivable for shares of the fund sold	1,025,940
Prepaid assets	42,788
Total assets	814,173,889

LIABILITIES
Payable for shares of the fund repurchased	2,012,901
Payable for compensation of Manager (Note 2)	184,437
Payable for custodian fees (Note 2)	3,999
Payable for investor servicing fees (Note 2)	247,509
Payable for Trustee compensation and expenses (Note 2)	406,539
Payable for administrative services (Note 2)	2,668
Other accrued expenses	114,224
Total liabilities	2,972,277

Net assets	$811,201,612

REPRESENTED BY
Paid-in capital (Unlimited shares authorized) (Notes 1 and 4)	$811,189,304
Total distributable earnings (Note 1)	12,308
Total — Representing net assets applicable to capital shares outstanding	$811,201,612

COMPUTATION OF NET ASSET VALUE AND OFFERING PRICE
Net asset value, offering price and redemption price per class A share
($789,193,272 divided by 789,185,097 shares)	$1.00
Net asset value and offering price per class B share ($587,266 divided by 587,213 shares)^*	$1.00
Net asset value and offering price per class C share ($17,067,165 divided by 17,068,116 shares)^*	$1.00
Net asset value, offering price and redemption price per class R share
($4,353,909 divided by 4,353,949 shares)	$1.00

^*Redemption price per share is equal to net asset value less any applicable contingent deferred sales charge.

The accompanying notes are an integral part of these financial statements.

20 Money Market Fund

Statement of operations Year ended 9/30/23


INVESTMENT INCOME
Interest	$37,546,950
Total investment income	37,546,950

EXPENSES
Compensation of Manager (Note 2)	2,183,534
Investor servicing fees (Note 2)	1,033,203
Custodian fees (Note 2)	15,435
Trustee compensation and expenses (Note 2)	34,280
Administrative services (Note 2)	25,150
Other	347,685
Total expenses	3,639,287
Expense reduction (Note 2)	(54,699)
Net expenses	3,584,588

Net investment income	33,962,362

Net increase in net assets resulting from operations	$33,962,362

The accompanying notes are an integral part of these financial statements.

Money Market Fund 21

Statement of changes in net assets


INCREASE IN NET ASSETS	Year ended 9/30/23	Year ended 9/30/22
Operations
Net investment income	$33,962,362	$4,235,830
Net increase in net assets resulting from operations	33,962,362	4,235,830
Distributions to shareholders (Note 1):
From ordinary income
Net investment income
Class A	(32,989,535)	(4,070,231)
Class B	(40,922)	(9,015)
Class C	(717,217)	(143,905)
Class R	(202,380)	(28,294)
Increase from capital share transactions (Note 4)	33,369,092	41,616,906
Total increase in net assets	33,381,400	41,601,291

NET ASSETS
Beginning of year	777,820,212	736,218,921
End of year	$811,201,612	$777,820,212

The accompanying notes are an integral part of these financial statements.

22 Money Market Fund

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Money Market Fund 23

Financial highlights
(For a common share outstanding throughout the period)


	INVESTMENT OPERATIONS				LESS DISTRIBUTIONS			RATIOS AND SUPPLEMENTAL DATA
											Ratio of net
											investment
											income (loss)
	Net asset value,		Net realized	Total from	From				Net assets,	Ratio of expenses	to average
	beginning	Net investment	gain (loss)	investment	net investment	Total	Net asset value, end	Total return at net	end of period	to average net assets	net assets
Period ended	of period	income (loss)	on investments	operations	income	distributions	of period	asset value (%)^a	(in thousands)	(%)^b	(%)
Class A
September 30, 2023	$1.00	.0436	—	.0436	(.0436)	(.0436)	$1.00	4.45	$789,193	.47	4.37
September 30, 2022	1.00	.0056	—	.0056	(.0057)	(.0057)	1.00	.57	744,273	.31^c,d	.56^c
September 30, 2021	1.00	.0001	—^e	.0001	(.0001)	(.0001)	1.00	.01	713,140	.13^c	.01^c
September 30, 2020	1.00	.0072	—^e	.0072	(.0072)	(.0072)	1.00	.72	805,153	.41^c	.68^c
September 30, 2019	1.00	.0203	—	.0203	(.0203)	(.0203)	1.00	2.05	702,331	.48	2.03
Class B
September 30, 2023	$1.00	.0436	—	.0436	(.0436)	(.0436)	$1.00	4.45	$587	.47	4.20
September 30, 2022	1.00	.0056	—	.0056	(.0057)	(.0057)	1.00	.57	1,458	.31^c,d	.41^c,f
September 30, 2021	1.00	.0001	—^e	.0001	(.0001)	(.0001)	1.00	.01	2,659	.13^c	.01^c
September 30, 2020	1.00	.0072	—^e	.0072	(.0072)	(.0072)	1.00	.72	4,022	.41^c	.60^c
September 30, 2019	1.00	.0203	—	.0203	(.0203)	(.0203)	1.00	2.05	3,044	.48	2.04
Class C
September 30, 2023	$1.00	.0436	—	.0436	(.0436)	(.0436)	$1.00	4.45	$17,067	.47	4.26
September 30, 2022	1.00	.0056	—	.0056	(.0057)	(.0057)	1.00	.57	27,343	.31^c,d	.81^c,f
September 30, 2021	1.00	.0001	—^e	.0001	(.0001)	(.0001)	1.00	.01	14,613	.13^c	.01^c
September 30, 2020	1.00	.0072	—^e	.0072	(.0072)	(.0072)	1.00	.72	26,051	.41^c	.51^c
September 30, 2019	1.00	.0203	—	.0203	(.0203)	(.0203)	1.00	2.05	16,076	.48	2.03
Class R
September 30, 2023	$1.00	.0436	—	.0436	(.0436)	(.0436)	$1.00	4.45	$4,354	.47	4.34
September 30, 2022	1.00	.0056	—	.0056	(.0057)	(.0057)	1.00	.57	4,745	.31^c,d	.52^c
September 30, 2021	1.00	.0001	—^e	.0001	(.0001)	(.0001)	1.00	.01	5,807	.13^c	.01^c
September 30, 2020	1.00	.0072	—^e	.0072	(.0072)	(.0072)	1.00	.72	8,084	.41^c	.65^c
September 30, 2019	1.00	.0203	—	.0203	(.0203)	(.0203)	1.00	2.05	5,605	.48	2.02

^aTotal return assumes dividend reinvestment and does not reflect the effect of sales charges.

^bIncludes amounts paid through expense offset and/or brokerage/service arrangements, if any (Note 2). Also excludes acquired fund fees and expenses, if any.

^cReflects a voluntary waiver of certain fund expenses in effect during the period relating to the enhancement of certain annualized net yields of the fund. As a result of such waivers, the expenses of each class reflect a reduction of the following amounts as a percentage of average net assets (Note 2):


	9/30/22	9/30/21	9/30/20
Class A	0.16%	0.33%	0.06%
Class B	0.16	0.33	0.06
Class C	0.16	0.33	0.06
Class R	0.16	0.33	0.06

^dIncludes one-time proxy cost of 0.01%.

^eAmount represents less than $0.0001 per share.

^fThe net investment income ratio for the period ending may not correspond with the expected class differences for the period due to the timing of subscriptions into the class or redemptions out of the class.

The accompanying notes are an integral part of these financial statements.


24 Money Market Fund	Money Market Fund 25

Notes to financial statements 9/30/23

Unless otherwise noted, the “reporting period” represents the period from October 1, 2022 through September 30, 2023. The following table defines commonly used references within the Notes to financial statements:


References to	Represent
Putnam Management	Putnam Investment Management, LLC, the fund’s manager, an indirect wholly-owned
	subsidiary of Putnam Investments, LLC
State Street	State Street Bank and Trust Company
JPMorgan	JPMorgan Chase Bank, N.A.
the SEC	the Securities and Exchange Commission
PIL	Putnam Investments Limited, an affiliate of Putnam Management

Putnam Money Market Fund (the fund) is a Massachusetts business trust, which is registered under the Investment Company Act of 1940, as amended, as a diversified open-end management investment company. The fund intends to operate as a “retail money market fund” as defined by Rule 2a–7 of the Investment Company Act of 1940 and limits investments in the fund to accounts beneficially owned by natural persons. The fund has adopted policies and procedures permitting the Board of Trustees of the fund to impose a liquidity fee or to temporarily suspend redemptions from the fund (a “redemption gate”) if the fund’s weekly liquid assets fall below specified thresholds. The goal of the fund is to seek as high a rate of current income as Putnam Management believes is consistent with preservation of capital and maintenance of liquidity. The fund invests mainly in money market instruments that are high quality and have short-term maturities. The fund invests significantly in certificates of deposit, commercial paper (including asset-backed commercial paper), U.S. government debt and repurchase agreements, corporate obligations and time deposits and may also invest in U.S. dollar denominated foreign securities of these types. Putnam Management may consider, among other factors, credit and interest rate risks and characteristics of the issuer or counterparty, as well as general market conditions, when deciding whether to buy or sell investments.

The fund offers the following share classes. The expenses for each class of shares may differ based on the distribution and investor servicing fees of each class, which are identified in Note 2.


Share class	Sales charge	Contingent deferred sales charge	Conversion feature
		1.00% on certain redemptions of shares
Class A	None	bought with no initial sales charge	None
			Converts to class A shares
Class B^*	None	5.00% phased out over six years	after 8 years
			Converts to class A shares
Class C	None	1.00% eliminated after one year	after 8 years
Class R^†	None	None	None

^*Purchases of class B shares are closed to new and existing investors except by exchange from class B shares of another Putnam fund or through dividend and/or capital gains reinvestment.

^†Not available to all investors.

In the normal course of business, the fund enters into contracts that may include agreements to indemnify another party under given circumstances. The fund’s maximum exposure under these arrangements is unknown as this would involve future claims that may be, but have not yet been, made against the fund. However, the fund’s management team expects the risk of material loss to be remote.

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

26 Money Market Fund

Under the fund’s Amended and Restated Agreement and Declaration of Trust, any claims asserted by a shareholder against or on behalf of the fund, including claims against Trustees and Officers, must be brought in state and federal courts located within the Commonwealth of Massachusetts.

Note 1: Significant accounting policies

The following is a summary of significant accounting policies consistently followed by the fund in the preparation of its financial statements. The preparation of financial statements is in conformity with accounting principles generally accepted in the United States of America and requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities in the financial statements and the reported amounts of increases and decreases in net assets from operations. Actual results could differ from those estimates. Subsequent events after the Statement of assets and liabilities date through the date that the financial statements were issued have been evaluated in the preparation of the financial statements.

Investment income, realized gains and losses and expenses of the fund are borne pro-rata based on the relative net assets of each class to the total net assets of the fund, except that each class bears expenses unique to that class (including the distribution fees applicable to such classes). Each class votes as a class only with respect to its own distribution plan or other matters on which a class vote is required by law or determined by the Trustees. Shares of each class would receive their pro-rata share of the net assets of the fund, if the fund were liquidated. In addition, the Trustees declare separate dividends on each class of shares.

Security valuation Portfolio securities and other investments are valued using policies and procedures adopted by the Board of Trustees. The Trustees have formed a Pricing Committee to oversee the implementation of these procedures and have delegated responsibility for valuing the fund’s assets in accordance with these procedures to Putnam Management. Putnam Management has established an internal Valuation Committee that is responsible for making fair value determinations, evaluating the effectiveness of the pricing policies of the fund and reporting to the Pricing Committee.

The valuation of the fund’s portfolio instruments is determined by means of the amortized cost method (which approximates fair value) as set forth in Rule 2a–7 under the Investment Company Act of 1940. The amortized cost of an instrument is determined by valuing it at its original cost and thereafter amortizing any discount or premium from its face value at a constant rate until maturity and is generally categorized as a Level 2 security.

Joint trading account Pursuant to an exemptive order from the SEC, the fund may transfer uninvested cash balances into a joint trading account along with the cash of other registered investment companies and certain other accounts managed by Putnam Management. These balances may be invested in issues of short-term investments having maturities of up to 90 days.

Repurchase agreements The fund, or any joint trading account, through its custodian, receives delivery of the underlying securities, the fair value of which at the time of purchase is required to be in an amount at least equal to the resale price, including accrued interest. Collateral for certain tri-party repurchase agreements, which totaled $424,041,404 at the end of the reporting period, is held at the counterparty’s custodian in a segregated account for the benefit of the fund and the counterparty. Putnam Management is responsible for determining that the value of these underlying securities is at all times at least equal to the resale price, including accrued interest. In the event of default or bankruptcy by the other party to the agreement, retention of the collateral may be subject to legal proceedings.

Security transactions and related investment income Security transactions are recorded on the trade date (the date the order to buy or sell is executed). Interest income, including amortization and accretion of premiums and discounts, is recorded on the accrual basis. Gains or losses on securities sold are determined on the identified cost basis.

Interfund lending The fund, along with other Putnam funds, may participate in an interfund lending program pursuant to an exemptive order issued by the SEC. This program allows the fund to lend to other Putnam funds that permit such transactions. Interfund lending transactions are subject to each fund’s investment policies and borrowing and lending limits. Interest earned or paid on the interfund lending transaction will be based on the average of certain current market rates. During the reporting period, the fund did not utilize the program.

Lines of credit The fund participates, along with other Putnam funds, in a $320 million syndicated unsecured committed line of credit, provided by State Street ($160 million) and JPMorgan ($160 million), and a $235.5 million unsecured uncommitted line of credit, provided by State Street. Borrowings may be made for temporary or emergency purposes, including the funding of shareholder redemption requests and trade settlements. Interest is charged to the fund based on the fund’s borrowing at a rate equal to 1.25% plus the higher of (1) the Federal

Money Market Fund 27

Funds rate and (2) the Overnight Bank Funding Rate for the committed line of credit and 1.30% plus the higher of (1) the Federal Funds rate and (2) the Overnight Bank Funding Rate for the uncommitted line of credit. A closing fee equal to 0.04% of the committed line of credit and 0.04% of the uncommitted line of credit has been paid by the participating funds and a $75,000 fee has been paid by the participating funds to State Street as agent of the syndicated committed line of credit. In addition, a commitment fee of 0.21% per annum on any unutilized portion of the committed line of credit is allocated to the participating funds based on their relative net assets and paid quarterly. During the reporting period, the fund had no borrowings against these arrangements.

Federal taxes It is the policy of the fund to distribute all of its taxable income within the prescribed time period and otherwise comply with the provisions of the Internal Revenue Code of 1986, as amended (the Code), applicable to regulated investment companies. It is also the intention of the fund to distribute an amount sufficient to avoid imposition of any excise tax under Section 4982 of the Code.

The fund is subject to the provisions of Accounting Standards Codification 740 Income Taxes (ASC 740). ASC 740 sets forth a minimum threshold for financial statement recognition of the benefit of a tax position taken or expected to be taken in a tax return. The fund did not have a liability to record for any unrecognized tax benefits in the accompanying financial statements. No provision has been made for federal taxes on income, capital gains or unrealized appreciation on securities held nor for excise tax on income and capital gains. Each of the fund’s federal tax returns for the prior three fiscal years remains subject to examination by the Internal Revenue Service.

Distributions to shareholders Income dividends are recorded daily by the fund and are paid monthly. Distributions from capital gains, if any, are paid at least annually. The amount and character of income and gains to be distributed are determined in accordance with income tax regulations, which may differ from generally accepted accounting principles. For the reporting period, there were no material temporary or permanent differences. Reclassifications are made to the fund’s capital accounts to reflect income and gains available for distribution (or available capital loss carryovers) under income tax regulations. At the close of the reporting period, the fund required no such reclassifications.

The tax basis components of distributable earnings as of the close of the reporting period were as follows:


Undistributed ordinary income	$12,308

The aggregate identified cost on a financial reporting and tax basis is the same.

Note 2: Management fee, administrative services and other transactions

The fund pays Putnam Management a management fee (based on the fund’s average net assets and computed and paid monthly) at annual rates that may vary based on the average of the aggregate net assets of all open-end mutual funds sponsored by Putnam Management (excluding net assets of funds that are invested in, or that are invested in by, other Putnam funds to the extent necessary to avoid “double counting” of those assets). Such annual rates may vary as follows:


0.440%	of the first $5 billion,	0.240%	of the next $50 billion,
0.390%	of the next $5 billion,	0.220%	of the next $50 billion,
0.340%	of the next $10 billion,	0.210%	of the next $100 billion and
0.290%	of the next $10 billion,	0.205%	of any excess thereafter.

For the reporting period, the management fee represented an effective rate (excluding the impact from any expense waivers in effect) of 0.281% of the fund’s average net assets.

Putnam Management has contractually agreed, through January 30, 2025, to waive fees and/or reimburse the fund’s expenses to the extent necessary to limit the cumulative expenses of the fund, exclusive of brokerage, interest, taxes, investment-related expenses, extraordinary expenses, acquired fund fees and expenses and payments under the fund’s investor servicing contract, investment management contract and distribution plans, on a fiscal year-to-date basis to an annual rate of 0.20% of the fund’s average net assets over such fiscal year-to-date period. During the reporting period, the fund’s expenses were not reduced as a result of this limit.

28 Money Market Fund

Putnam Management may from time to time voluntarily undertake to waive fees and/or reimburse certain fund expenses in order to enhance the annualized net yield for the fund. Any such waiver or reimbursement would be voluntary and may be modified or discontinued by Putnam Management at any time without notice. For the reporting period, Putnam Management did not waive any specific distribution fees from the fund.

PIL is authorized by the Trustees to manage a separate portion of the assets of the fund as determined by Putnam Management from time to time. PIL did not manage any portion of the assets of the fund during the reporting period. If Putnam Management were to engage the services of PIL, Putnam Management would pay a quarterly sub-management fee to PIL for its services at an annual rate of 0.20% of the average net assets of the portion of the fund managed by PIL.

The fund reimburses Putnam Management an allocated amount for the compensation and related expenses of certain officers of the fund and their staff who provide administrative services to the fund. The aggregate amount of all such reimbursements is determined annually by the Trustees.

Custodial functions for the fund’s assets are provided by State Street. Custody fees are based on the fund’s asset level, the number of its security holdings and transaction volumes.

Putnam Investor Services, Inc., an affiliate of Putnam Management, provides investor servicing agent functions to the fund. Putnam Investor Services, Inc. received fees for investor servicing for class A, class B, class C and class R shares that included (1) a per account fee for each direct and underlying non-defined contribution account (retail account) of the fund; (2) a specified rate of the fund’s assets attributable to defined contribution plan accounts; and (3) a specified rate based on the average net assets in retail accounts. Putnam Investor Services, Inc. has agreed that the aggregate investor servicing fees for each fund’s retail and defined contribution accounts for these share classes will not exceed an annual rate of 0.25% of the fund’s average assets attributable to such accounts.

During the reporting period, the expenses for each class of shares related to investor servicing fees were as follows:


Class A	$1,003,272	Class C	22,412
Class B	1,303	Class R	6,216
		Total	$1,033,203

The fund has entered into expense offset arrangements with Putnam Investor Services, Inc. and State Street whereby Putnam Investor Services, Inc.’s and State Street’s fees are reduced by credits allowed on cash balances. For the reporting period, the fund’s expenses were reduced by $54,699 under the expense offset arrangements.

Each Independent Trustee of the fund receives an annual Trustee fee, of which $673, as a quarterly retainer, has been allocated to the fund, and an additional fee for each Trustees meeting attended. Trustees also are reimbursed for expenses they incur relating to their services as Trustees.

The fund has adopted a Trustee Fee Deferral Plan (the Deferral Plan) which allows the Trustees to defer the receipt of all or a portion of Trustees fees payable on or after July 1, 1995. The deferred fees remain invested in certain Putnam funds until distribution in accordance with the Deferral Plan.

The fund has adopted an unfunded noncontributory defined benefit pension plan (the Pension Plan) covering all Trustees of the fund who have served as a Trustee for at least five years and were first elected prior to 2004. Benefits under the Pension Plan are equal to 50% of the Trustee’s average annual attendance and retainer fees for the three years ended December 31, 2005. The retirement benefit is payable during a Trustee’s lifetime, beginning the year following retirement, for the number of years of service through December 31, 2006. Pension expense for the fund is included in Trustee compensation and expenses in the Statement of operations. Accrued pension liability is included in Payable for Trustee compensation and expenses in the Statement of assets and liabilities. The Trustees have terminated the Pension Plan with respect to any Trustee first elected after 2003.

Money Market Fund 29

The fund has adopted distribution plans (the Plans) with respect to the following share classes pursuant to Rule 12b–1 under the Investment Company Act of 1940. The purpose of the Plans is to compensate Putnam Retail Management Limited Partnership, an indirect wholly-owned subsidiary of Putnam Investments, LLC, for services provided and expenses incurred in distributing shares of the fund. The Plans provide payments by the fund to Putnam Retail Management Limited Partnership at an annual rate of up to the following amounts (Maximum %) of the average net assets attributable to each class. The Trustees currently have not approved payments by the fund under the Plans.


	Maximum %	Approved %
Class B	0.75%	0.00%
Class C	1.00%	0.00%
Class R	1.00%	0.00%

For the reporting period, Putnam Retail Management Limited Partnership, acting as underwriter, received net commissions of $10 and $145, respectively, in contingent deferred sales charges from redemptions of class B and class C shares purchased by exchange from another Putnam fund.

A deferred sales charge of up to 1.00% for class A shares may be assessed on certain redemptions. For the reporting period, Putnam Retail Management Limited Partnership, acting as underwriter, received $118 in contingent deferred sales charges from redemptions of class A shares purchased by exchange from another Putnam fund.

Note 3: Purchases and sales of securities

During the reporting period, the cost of purchases and the proceeds from sales (including maturities) of investment securities (all short-term obligations) aggregated $100,704,471,445 and $100,672,230,000, respectively. The fund may purchase or sell investments from or to other Putnam funds in the ordinary course of business, which can reduce the fund’s transaction costs, at prices determined in accordance with SEC requirements and policies approved by the Trustees. During the reporting period, purchases or sales from or to other Putnam funds, if any, did not represent more than 5% of the fund’s total cost of purchases and/or total proceeds from sales.

Note 4: Capital shares

At the close of the reporting period, there were an unlimited number of shares of beneficial interest authorized. Transactions, including, if applicable, direct exchanges pursuant to share conversions, in capital shares were as follows:


	YEAR ENDED 9/30/23		YEAR ENDED 9/30/22
Class A	Shares	Amount	Shares	Amount
Shares sold	401,078,148	$401,078,148	334,920,696	$334,920,696
Shares issued in connection with
reinvestment of distributions	32,638,235	32,638,235	4,127,819	4,127,819
	433,716,383	433,716,383	339,048,515	339,048,515
Shares repurchased	(388,808,647)	(388,808,647)	(307,900,660)	(307,900,660)
Net increase	44,907,736	$44,907,736	31,147,855	$31,147,855

	YEAR ENDED 9/30/23		YEAR ENDED 9/30/22
Class B	Shares	Amount	Shares	Amount
Shares sold	328,660	$328,660	713,622	$713,622
Shares issued in connection with
reinvestment of distributions	40,132	40,132	9,119	9,119
	368,792	368,792	722,741	722,741
Shares repurchased	(1,239,942)	(1,239,942)	(1,922,921)	(1,922,921)
Net decrease	(871,150)	$(871,150)	(1,200,180)	$(1,200,180)

30 Money Market Fund


	YEAR ENDED 9/30/23		YEAR ENDED 9/30/22
Class C	Shares	Amount	Shares	Amount
Shares sold	13,772,648	$13,772,648	25,880,692	$25,880,692
Shares issued in connection with
reinvestment of distributions	706,902	706,902	147,115	147,115
	14,479,550	14,479,550	26,027,807	26,027,807
Shares repurchased	(24,755,603)	(24,755,603)	(13,296,709)	(13,296,709)
Net increase (decrease)	(10,276,053)	$(10,276,053)	12,731,098	$12,731,098

	YEAR ENDED 9/30/23		YEAR ENDED 9/30/22
Class R	Shares	Amount	Shares	Amount
Shares sold	3,333,659	$3,333,659	2,828,422	$2,828,422
Shares issued in connection with
reinvestment of distributions	200,465	200,465	28,336	28,336
	3,534,124	3,534,124	2,856,758	2,856,758
Shares repurchased	(3,925,565)	(3,925,565)	(3,918,625)	(3,918,625)
Net decrease	(391,441)	$(391,441)	(1,061,867)	$(1,061,867)

Note 5: Market, credit and other risks

In the normal course of business, the fund trades financial instruments and enters into financial transactions where risk of potential loss exists due to changes in the market (market risk) or failure of the contracting party to the transaction to perform (credit risk). The fund may be exposed to additional credit risk that an institution or other entity with which the fund has unsettled or open transactions will default. Investments in foreign securities involve certain risks, including those related to economic instability, unfavorable political developments, and currency fluctuations.

On July 27, 2017, the United Kingdom’s Financial Conduct Authority (“FCA”), which regulates LIBOR, announced its intention to cease compelling banks to provide the quotations needed to sustain LIBOR after 2021. ICE Benchmark Administration, the administrator of LIBOR, ceased publication of most LIBOR settings on a representative basis at the end of 2021 and ceased publication of a majority of U.S. dollar LIBOR settings on a representative basis after June 30, 2023. In addition, global regulators have announced that, with limited exceptions, no new LIBOR-based contracts should be entered into after 2021. LIBOR has historically been a common benchmark interest rate index used to make adjustments to variable-rate loans. It is used throughout global banking and financial industries to determine interest rates for a variety of financial instruments and borrowing arrangements. Actions by regulators have resulted in the establishment of alternative reference rates to LIBOR in most major currencies. Various financial industry groups have been planning for the transition away from LIBOR, but there are obstacles to converting certain longer-term securities and transactions to new reference rates. Markets are developing slowly and questions around liquidity in these rates and how to appropriately adjust these rates to mitigate any economic value transfer at the time of transition remain a significant concern. Neither the effect of the transition process nor its ultimate success can yet be known. The transition process might lead to increased volatility and illiquidity in markets that rely on LIBOR to determine interest rates. It could also lead to a reduction in the value of some LIBOR-based investments and reduce the effectiveness of related transactions, such as hedges. While some LIBOR-based instruments may contemplate a scenario where LIBOR is no longer available by providing for an alternative rate-setting methodology, not all may have such provisions and there may be significant uncertainty regarding the effectiveness of any such alternative methodologies. Since the usefulness of LIBOR as a benchmark could deteriorate during the transition period, these effects could occur at any time.

Money Market Fund 31

Note 6: Offsetting of financial and derivative assets and liabilities

The following table summarizes any derivatives, repurchase agreements and reverse repurchase agreements, at the end of the reporting period, that are subject to an enforceable master netting agreement or similar agreement. For securities lending transactions or borrowing transactions associated with securities sold short, if any, see Note 1. For financial reporting purposes, the fund does not offset financial assets and financial liabilities that are subject to the master netting agreements in the Statement of assets and liabilities.


	BofA	Citigroup	JPMorgan
	Securities,	Global	Securities,	Royal Bank
	Inc.	Markets, Inc.	LLC	of Canada	Total
Assets:
Repurchase agreements^**	$112,135,000	$112,100,000	$79,300,000	$112,100,000	$415,635,000
Total Assets	$112,135,000	$112,100,000	$79,300,000	$112,100,000	$415,635,000
Liabilities:
Total Liabilities	$—	$—	$—	$—	$—
Total Financial and Derivative	$112,135,000	$112,100,000	$79,300,000	$112,100,000	$415,635,000
Net Assets
Total collateral received (pledged)^†##	$112,135,000	$112,100,000	$79,300,000	$112,100,000
Net amount	$—	$—	$—	$—
Controlled collateral received (including
TBA commitments)^**	$—	$—	$—	$—	$—
Uncontrolled collateral received	$114,377,700	$114,349,385	$80,921,792	$114,392,527	$424,041,404
Collateral (pledged) (including
TBA commitments)^**	$—	$—	$—	$—	$—

^**Included with Investments in securities on the Statement of assets and liabilities.

^†Additional collateral may be required from certain brokers based on individual agreements.

^##Any over-collateralization of total financial and derivative net assets is not shown. Collateral may include amounts related to unsettled agreements.

Note 7: Of special note

On May 31, 2023, Franklin Resources, Inc. (“Franklin Resources”) and Great-West Lifeco Inc., the parent company of Putnam U.S. Holdings I, LLC (“Putnam Holdings”), announced that they have entered into a definitive agreement for a subsidiary of Franklin Resources to acquire Putnam Holdings in a stock and cash transaction.

As part of this transaction, Putnam Management, a wholly-owned subsidiary of Putnam Holdings and investment manager to the Putnam family of funds (the “Putnam Funds”), would become an indirect wholly-owned subsidiary of Franklin Resources.

The transaction is subject to customary closing conditions, including receipt of applicable regulatory approvals. Subject to such approvals and the satisfaction of these conditions, the transaction is currently expected to be consummated in the fourth quarter of 2023.

Under the Investment Company Act of 1940, as amended, consummation of the transaction will result in the automatic termination of the investment management contract between each Putnam Fund and Putnam Management and any related sub-management and sub-advisory contracts, where applicable. In anticipation of this automatic termination, on June 23, 2023, the Board of Trustees of the Putnam Funds approved a new investment management contract between each Putnam Fund and Putnam Management (and new sub-management and sub-advisory contracts, if applicable), which will be presented to the shareholders of each Putnam Fund for their approval at shareholder meetings in October 2023 or at any adjourned sessions of such meetings. Proxy solicitation materials related to these meetings have been made available to shareholders that held shares of the fund at the close of business on July 24, 2023.

32 Money Market Fund

Federal tax information (Unaudited)

For the reporting period, pursuant to §871(k) of the Internal Revenue Code, the fund hereby designates $22,894,410 of distributions paid as qualifying to be taxed as interest-related dividends, and no monies to be taxed as short-term capital gain dividends for nonresident alien shareholders.

The Form 1099 that will be mailed to you in January 2024 will show the tax status of all distributions paid to your account in calendar 2023.

Money Market Fund 33

34 Money Market Fund

^* Mr. Reynolds is an “interested person” (as defined in the Investment Company Act of 1940) of the fund and Putnam Investments. He is President and Chief Executive Officer of Putnam Investments, as well as the President of your fund and each of the other Putnam funds.

The address of each Trustee is 100 Federal Street, Boston, MA 02110.

As of September 30, 2023, there were 89 mutual funds, 4 closed-end funds, and 12 exchange-traded funds in the Putnam funds complex. Each Trustee serves as Trustee of all funds in the Putnam funds complex.

Each Trustee serves for an indefinite term, until his or her resignation, retirement at age 75, removal, or death.

Money Market Fund 35

Officers

In addition to Robert L. Reynolds, the other officers of the fund are shown below:


James F. Clark (Born 1974)	Alan G. McCormack (Born 1964)
Vice President and Chief Compliance Officer	Vice President and Derivatives Risk Manager
Since 2016	Since 2022
Chief Compliance Officer and Chief Risk Officer,	Head of Quantitative Equities and Risk,
Putnam Investments, and Chief Compliance Officer,	Putnam Investments
Putnam Management
	Denere P. Poulack (Born 1968)
Michael J. Higgins (Born 1976)	Assistant Vice President, Assistant Clerk,
Vice President, Treasurer, and Clerk	and Assistant Treasurer
Since 2010	Since 2004

Jonathan S. Horwitz (Born 1955)	Janet C. Smith (Born 1965)
Executive Vice President, Principal Executive Officer,	Vice President, Principal Financial Officer, Principal
and Compliance Liaison	Accounting Officer, and Assistant Treasurer
Since 2004	Since 2007
	Head of Fund Administration Services,
Richard T. Kircher (Born 1962)	Putnam Investments and Putnam Management
Vice President and BSA Compliance Officer
Since 2019	Stephen J. Tate (Born 1974)
Assistant Director, Operational Compliance, Putnam	Vice President and Chief Legal Officer
Investments and Putnam Retail Management	Since 2021
	General Counsel, Putnam Investments,
Martin Lemaire (Born 1984)	Putnam Management, and Putnam Retail Management
Vice President and Derivatives Risk Manager
Since 2022	Mark C. Trenchard (Born 1962)
Risk Manager and Risk Analyst, Putnam Investments	Vice President
	Since 2002
Susan G. Malloy (Born 1957)	Director of Operational Compliance, Putnam
Vice President and Assistant Treasurer	Investments and Putnam Retail Management
Since 2007
Head of Accounting and Middle Office Services,
Putnam Investments and Putnam Management

The principal occupations of the officers for the past five years have been with the employers as shown above, although in some cases they have held different positions with such employers. The address of each officer is 100 Federal Street, Boston, MA 02110.

36 Money Market Fund

Fund information

Founded over 85 years ago, Putnam Investments was built around the concept that a balance between risk and reward is the hallmark of a well-rounded financial program. We manage funds across income, value, blend, growth, sustainable, and asset allocation categories.


Investment Manager	Trustees	Richard T. Kircher
Putnam Investment	Kenneth R. Leibler, Chair	Vice President and
Management, LLC	Barbara M. Baumann, Vice Chair	BSA Compliance Officer
100 Federal Street	Liaquat Ahamed
Boston, MA 02110	Katinka Domotorffy	Martin Lemaire
	Catharine Bond Hill	Vice President and
Investment Sub-Advisor	Jennifer Williams Murphy	Derivatives Risk Manager
Putnam Investments Limited	Marie Pillai
16 St James’s Street	George Putnam III	Susan G. Malloy
London, England SW1A 1ER	Robert L. Reynolds	Vice President and
	Manoj P. Singh	Assistant Treasurer
Marketing Services	Mona K. Sutphen
Putnam Retail Management		Alan G. McCormack
Limited Partnership	Officers	Vice President and
100 Federal Street	Robert L. Reynolds	Derivatives Risk Manager
Boston, MA 02110	President
		Denere P. Poulack
Custodian	James F. Clark	Assistant Vice President,
State Street Bank	Vice President and	Assistant Clerk, and
and Trust Company	Chief Compliance Officer	Assistant Treasurer

Legal Counsel	Michael J. Higgins	Janet C. Smith
Ropes & Gray LLP	Vice President, Treasurer,	Vice President,
	and Clerk	Principal Financial Officer,
Independent Registered		Principal Accounting Officer,
Public Accounting Firm	Jonathan S. Horwitz	and Assistant Treasurer
PricewaterhouseCoopers LLP	Executive Vice President,
	Principal Executive Officer,	Stephen J. Tate
	and Compliance Liaison	Vice President and
		Chief Legal Officer

		Mark C. Trenchard
		Vice President

This report is for the information of shareholders of Putnam Money Market Fund. It may also be used as sales literature when preceded or accompanied by the current prospectus, the most recent copy of Putnam’s Quarterly Performance Summary, and Putnam’s Quarterly Ranking Summary. For more recent performance, please visit putnam.com. Investors should carefully consider the investment objectives, risks, charges, and expenses of a fund, which are described in its prospectus. For this and other information or to request a prospectus or summary prospectus, call 1-800-225-1581 toll free. Please read the prospectus carefully before investing. The fund’s Statement of Additional Information contains additional information about the fund’s Trustees and is available without charge upon request by calling 1-800-225-1581.


	Item 2. Code of Ethics:

(a) The fund’s principal executive, financial and accounting officers are employees of Putnam Investment Management, LLC, the Fund’s investment manager. As such they are subject to a comprehensive Code of Ethics adopted and administered by Putnam Investments which is designed to protect the interests of the firm and its clients. The Fund has adopted a Code of Ethics which incorporates the Code of Ethics of Putnam Investments with respect to all of its officers and Trustees who are employees of Putnam Investment Management, LLC. For this reason, the Fund has not adopted a separate code of ethics governing its principal executive, financial and accounting officers.

(c) In January 2023, the Code of Ethics of Putnam Investments and Code of Ethics of Putnam Funds were amended. The key changes to the Putnam Investments Code of Ethics are as follows: (i) Prohibition on investments in a single stock ETFs and (ii) Revision to the 7-day blackout rule for Analysts. The key change to the Putnam Funds Code of Ethics was that the provisions of the Code of Ethics for employees of PanAgora Asset Management, inc. and any of its subsidiaries are excluded from the Putnam Funds’ Code of Ethics.


	Item 3. Audit Committee Financial Expert:

The Funds’ Audit, Compliance and Risk Committee is comprised solely of Trustees who are “independent” (as such term has been defined by the Securities and Exchange Commission (“SEC”) in regulations implementing Section 407 of the Sarbanes-Oxley Act (the “Regulations”)). The Trustees believe that each member of the Audit, Compliance and Risk Committee also possesses a combination of knowledge and experience with respect to financial accounting matters, as well as other attributes, that qualifies him or her for service on the Committee. In addition, the Trustees have determined that each of Dr. Hill, Ms. Murphy and Mr. Singh qualifies as an “audit committee financial expert” (as such term has been defined by the Regulations) based on their review of his or her pertinent experience and education.The SEC has stated, and the funds’ amended and restated agreement and Declaration of Trust provides, that the designation or identification of a person as an audit committee financial expert pursuant to this Item 3 of Form N-CSR does not impose on such person any duties, obligations or liability that are greater than the duties, obligations and liability imposed on such person as a member of the Audit, Compliance and Risk Committee and the Board of Trustees in the absence of such designation or identification.


	Item 4. Principal Accountant Fees and Services:


	The following table presents fees billed in each of the last two fiscal years for services rendered to the fund by the fund’s independent auditor:


Fiscal year ended	Audit Fees	Audit-Related Fees	Tax Fees	All Other Fees


September 30, 2023	$55,741	$ —	$4,529	$ —
September 30, 2022	$68,157	$ —	$4,397	$ —


	For the fiscal years ended September 30, 2023 and September 30, 2022, the fund’s independent auditor billed aggregate non-audit fees in the amounts of $225,161 and $302,680 respectively, to the fund, Putnam Management and any entity controlling, controlled by or under common control with Putnam Management that provides ongoing services to the fund.


	Audit Fees represent fees billed for the fund’s last two fiscal years relating to the audit and review of the financial statements included in annual reports and registration statements, and other services that are normally provided in connection with statutory and regulatory filings or engagements.


	Audit-Related Fees represent fees billed in the fund’s last two fiscal years for services traditionally performed by the fund’s auditor, including accounting consultation for proposed transactions or concerning financial accounting and reporting standards and other audit or attest services not required by statute or regulation.


	Tax Fees represent fees billed in the fund’s last two fiscal years for tax compliance, tax planning and tax advice services. Tax planning and tax advice services include assistance with tax audits, employee benefit plans and requests for rulings or technical advice from taxing authorities.


	Pre-Approval Policies of the Audit, Compliance and Risk Committee. The Audit, Compliance and Risk Committee of the Putnam funds has determined that, as a matter of policy, all work performed for the funds by the funds’ independent auditors will be pre-approved by the Committee itself and thus will generally not be subject to pre-approval procedures.

The Audit, Compliance and Risk Committee also has adopted a policy to pre-approve the engagement by Putnam Management and certain of its affiliates of the funds’ independent auditors, even in circumstances where pre-approval is not required by applicable law. Any such requests by Putnam Management or certain of its affiliates are typically submitted in writing to the Committee and explain, among other things, the nature of the proposed engagement, the estimated fees, and why this work should be performed by that particular audit firm as opposed to another one. In reviewing such requests, the Committee considers, among other things, whether the provision of such services by the audit firm are compatible with the independence of the audit firm.


	The following table presents fees billed by the fund’s independent auditor for services required to be approved pursuant to paragraph (c)(7)(ii) of Rule 2–01 of Regulation S-X.


Fiscal year ended	Audit-Related Fees	Tax Fees	All Other Fees	Total Non-Audit Fees

September 30, 2023	$ —	$220,632	$ —	$ —
September 30, 2022	$ —	$298,283	$ —	$ —


	Item 5. Audit Committee of Listed Registrants


	Not applicable


	Item 6. Schedule of Investments:


	The registrant’s schedule of investments in unaffiliated issuers is included in the report to shareholders in Item 1 above.


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


	Not applicable


	Item 8. Portfolio Managers of Closed-End Investment Companies


	Not Applicable


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


	Not applicable


	Item 10. Submission of Matters to a Vote of Security Holders:


	Not applicable


	Item 11. Controls and Procedures:

(a) The registrant’s principal executive officer and principal financial officer have concluded, based on their evaluation of the effectiveness of the design and operation of the registrant’s disclosure controls and procedures as of a date within 90 days of the filing date of this report, that the design and operation of such procedures are generally effective to provide reasonable assurance that information required to be disclosed by the registrant in this report is recorded, processed, summarized and reported within the time periods specified in the Commission’s rules and forms.


	(b) Changes in internal control over financial reporting: Not applicable


	Item 12. Disclosures of Securities Lending Activities for Closed-End Management Investment Companies:


	Not Applicable


	Item 13. Exhibits:


	(a)(1) The Code of Ethics of The Putnam Funds, which incorporates the Code of Ethics of Putnam Investments, is filed herewith


	(a)(2) Separate certifications for the principal executive officer and principal financial officer of the registrant as required by Rule 30a-2(a) under the Investment Company Act of 1940, as amended, are filed herewith.


	(b) The certifications required by Rule 30a-2(b) under the Investment Company Act of 1940, as amended, are filed herewith.


	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.


	Putnam Money Market Fund


	By (Signature and Title):


	/s/ Janet C. Smith Janet C. Smith Principal Accounting Officer


	Date: November 27, 2023


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


	By (Signature and Title):


	/s/ Jonathan S. Horwitz Jonathan S. Horwitz Principal Executive Officer


	Date: November 27, 2023


	By (Signature and Title):


	/s/ Janet C. Smith Janet C. Smith Principal Financial Officer


	Date: November 27, 2023

Putnam Money Market Fund (PDDXX) N-CSRCertified annual shareholder report (management investment company)