John Hancock Funds III

August 1, 2026

Summary prospectus

John Hancock Disciplined Value Mid Cap Fund

Before you invest, you may want to review the fund’s prospectus, which contains more information about the fund and its risks. You can find the fund’s prospectus and other information about the fund, including the Statement of Additional Information and most recent reports, online at www.jhinvestments.com/prospectuses. You can also get this information at no cost by calling 800-225-5291 or by sending an email request to info@jhinvestments.com. The fund’s prospectus and Statement of Additional Information, both dated August 1, 2026, as may be supplemented, and most recent financial highlights information included in the shareholder report, dated March 31, 2026, are incorporated by reference into this summary prospectus.

Tickers
A: JVMAX	C: JVMCX	I: JVMIX	R2: JVMSX	R4: JVMTX	R6: JVMRX

Investment objective

To seek long-term growth of capital with current income as a secondary objective.

Fees and expenses

This table describes the fees and expenses you may pay if you buy, hold, and sell shares of the fund. You may pay other fees, such as brokerage commissions and other fees to financial intermediaries, which are not reflected in the tables and examples below. You may qualify for sales charge discounts on Class A shares if you and your family invest, or agree to invest in the future, at least $50,000 in the John Hancock family of funds. Intermediaries may have different policies and procedures regarding the availability of front-end sales charge waivers or contingent deferred sales charge (CDSC) waivers (See Appendix 1 - Intermediary sales charge waivers, which includes information about specific sales charge waivers applicable to the intermediaries identified therein). More information about these and other discounts is available from your financial professional and beginning on page 20 of the prospectus under “Sales charge reductions and waivers” or page 104 of the fund’s Statement of Additional Information under “Sales Charges on Class A and Class C Shares.”

Shareholder fees (%) (fees paid directly from your investment)	A	C	I	R2	R4	R6
Maximum front-end sales charge (load) on purchases, as a % of purchase price	5.00	None	None	None	None	None
Maximum deferred sales charge (load) as a % of purchase or sale price, whichever is less	1.00	1.00	None	None	None	None
	(on certain purchases, including those of $1 million or more)
Small account fee (for fund account balances under $1,000) ($)	20	20	None	None	None	None

Annual fund operating expenses (%) (expenses that you pay each year as a percentage of the value of your investment)	A	C	I	R2	R4	R6
Management fee	0.71	0.71	0.71	0.71	0.71	0.71
Distribution and service (Rule 12b-1) fees	0.25	1.00	0.00	0.25	0.25	0.00
Other expenses
Service plan fee	0.00	0.00	0.00	0.25	0.10	0.00
Additional other expenses	0.15	0.15	0.15	0.04	0.04	0.04
Total other expenses	0.15	0.15	0.15	0.29	0.14	0.04
Total annual fund operating expenses	1.11	1.86	0.86	1.25	1.10	0.75
Contractual expense reimbursement	-0.01 1	-0.01 1	-0.01 1	-0.01 1	-0.11 1,2	-0.01 1
Total annual fund operating expenses after expense reimbursements	1.10	1.85	0.85	1.24	0.99	0.74

The advisor contractually agrees to waive a portion of its management fee and/or reimburse expenses for the fund and certain other John Hancock funds according to an asset level breakpoint schedule that is based on the aggregate net assets of all the funds participating in the waiver or reimbursement, including the fund (the participating portfolios). This waiver equals, on an annualized basis, 0.0100% of that portion of the aggregate net assets of all the participating portfolios that exceeds $75 billion but is less than or equal to $125 billion; 0.0125% of that portion of the aggregate net assets of all the participating portfolios that exceeds $125 billion but is less than or equal to $150 billion; 0.0150% of that portion of the aggregate net assets of all the participating portfolios that exceeds $150 billion but is less than or equal to $175 billion; 0.0175% of that portion of the aggregate net assets of all the participating portfolios that exceeds $175 billion but is less than or equal to $200 billion; 0.0200% of that portion of the aggregate net assets of all the participating portfolios that exceeds $200 billion but is less than or equal to $225 billion; and 0.0225% of that portion of the aggregate net assets of all the participating portfolios that exceeds $225 billion. The amount of the reimbursement is calculated daily and allocated among all the participating portfolios in proportion to the daily net assets of each participating portfolio. During its most recent fiscal year, the fund’s reimbursement amounted to 0.01% of the fund’s average daily net assets. This agreement expires on July 31, 2027, unless renewed by mutual agreement of the fund and the advisor based upon a determination that this is appropriate under the circumstances at that time.

John Hancock Disciplined Value Mid Cap Fund

The distributor contractually agrees to limit its Rule 12b-1 fees for Class R4 shares to 0.15%. This agreement expires on July 31, 2027, unless renewed by mutual agreement of the fund and the distributor based upon a determination that this is appropriate under the circumstances at that time.

Expense example

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. Please see below a hypothetical example showing the expenses of a $10,000 investment for the time periods indicated and then, except as shown below, assuming you sell all of your shares at the end of those periods. The example assumes a 5% average annual return and that fund expenses will not change over the periods. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

	Shares Sold						Shares Not Sold
Expenses ($)	A	C	I	R2	R4	R6	C
1 year	607	288	87	126	101	76	188
3 years	834	584	273	396	339	239	584
5 years	1,080	1,005	476	685	596	416	1,005
10 years	1,783	1,983	1,060	1,510	1,330	929	1,983

Portfolio turnover

The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when fund shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During its most recent fiscal year, the fund’s portfolio turnover rate was 48% of the average value of its portfolio.

Principal investment strategies

Under normal circumstances, the fund seeks to achieve its investment objectives by investing at least 80% of its net assets (including borrowings for investment purposes) in a diversified portfolio consisting primarily of equity securities of value companies, such as common stocks, of issuers with medium market capitalizations.A medium market capitalization issuer is generally considered to be one whose market capitalization is, at the time the fund makes the investment, similar to the market capitalization of companies in the Russell Midcap Value Index. The market capitalization range of the Russell Midcap Value Index was approximately $903.91 million to $110.43 billion as of March 31, 2026, and may change over time.

The manager defines value companies as those companies that are included within either the Russell 3000 Value Index or MSCI World Value Index, or that exhibit attractive value characteristics based on financial metrics, such as price-to-book ratio or price-to-earnings ratio, price-to-sales ratio, enterprise-value-to-EBITDA (earnings before interest, taxes, depreciation and amortization) ratio or price-to-free-cash-flow ratio relative to a broader core, or non-style-specific, investment universe as represented by the Russell Mid Cap Index.

The manager examines various factors in determining the value characteristics of such issuers, including price-to-book value ratios and price-to-earnings ratios. These value characteristics are examined in the context of the issuer’s operating and financial fundamentals, such as return on equity and earnings growth and cash flow. The manager selects securities for the fund based on a continuous study of trends in industries and companies, earnings power and growth, and other investment criteria. In general, the fund’s investments are broadly diversified over a number of industries and, as a matter of policy, the fund is limited to investing a maximum of 25% of its total assets in any one industry. The fund may focus its investments in a particular sector or sectors of the economy. The Fund may also invest in real estate investment trusts (REITs).

The fund may also invest up to 20% of its total assets in foreign currency-denominated securities.

The fund may invest up to 15% of its net assets in illiquid securities, including securities that are illiquid by virtue of the absence of a readily available market or legal or contractual restrictions on resale.

The fund may participate as a purchaser in initial public offerings of securities (IPOs). An IPO is a company’s first offering of stock to the public. The fund may trade securities actively.

Principal risks

An investment in the fund is not a bank deposit and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency. Many factors affect performance, and fund shares will fluctuate in price, meaning you could lose money. The fund’s investment strategy may not produce the intended results.

The fund’s main risks are listed below in alphabetical order, not in order of importance. Before investing, be sure to read the additional descriptions of these risks beginning on page 5 of the prospectus.

Economic and market events risk. Events in the U.S. and global financial markets, including actions taken by the U.S. Federal Reserve or foreign central banks to stimulate or stabilize economic growth, may at times result in unusually high market volatility, which could negatively impact performance. Reduced liquidity in credit and fixed-income markets could adversely affect issuers worldwide. Banks and financial services companies could suffer losses if interest rates rise or economic conditions deteriorate.

Equity securities risk. The price of equity securities may decline due to changes in a company’s financial condition or overall market conditions. Securities the manager believes are undervalued may never realize their full potential value, and in certain markets value stocks may underperform the market as a whole.

John Hancock Disciplined Value Mid Cap Fund

Foreign securities risk. Less information may be publicly available regarding foreign issuers, including foreign government issuers. Foreign securities may be subject to foreign taxes and may be more volatile than U.S. securities. Currency fluctuations and political and economic developments may adversely impact the value of foreign securities.

High portfolio turnover risk. Trading securities actively and frequently can increase transaction costs (thus lowering performance) and taxable distributions.

Illiquid and restricted securities risk. Illiquid and restricted securities may be difficult to value and may involve greater risks than liquid securities. Illiquidity may have an adverse impact on a particular security’s market price and the fund’s ability to sell the security.

Initial public offerings (IPOs) risk. IPO share prices are frequently volatile and may significantly impact fund performance.

Liquidity risk. The extent (if at all) to which a security may be sold or a derivative position closed without negatively impacting its market value may be impaired by reduced market activity or participation, legal restrictions, or other economic and market impediments.

Mid-sized company risk. Mid-sized companies are generally less established and may be more volatile than larger companies. Mid-capitalization securities may underperform the market as a whole.

Operational and cybersecurity risk. Cybersecurity breaches may allow an unauthorized party to gain access to fund assets, customer data, or proprietary information, or cause a fund or its service providers to suffer data corruption or lose operational functionality. Similar incidents affecting issuers of a fund’s securities may negatively impact performance. Operational risk may arise from human error, error by third parties, communication errors, or technology failures, among other causes.

Real estate investment trust (REIT) risk. REITs, pooled investment vehicles that typically invest in real estate directly or in loans collateralized by real estate, carry risks associated with owning real estate, including the potential for a decline in value due to economic or market conditions.

Sector risk. When a fund focuses its investments in certain sectors of the economy, its performance may be driven largely by sector performance and could fluctuate more widely than if the fund were invested more evenly across sectors.

Value investment style risk. Value securities may underperform the market as a whole, which may cause value-oriented funds to underperform equity funds with other investment strategies. Securities the manager believes are undervalued may never perform as expected.

Past performance

The following information illustrates the variability of the fund’s returns and provides some indication of the risks of investing in the fund by showing changes in the fund’s performance from year to year and by showing how the fund’s average annual returns compared with a broad-based securities market index. Past performance (before and after taxes) does not indicate future results. The Russell Midcap Value Index shows how the fund’s performance compares against the returns of similar investments. All figures assume dividend reinvestment. Performance information is updated daily, monthly, and quarterly and may be obtained at our website, jhinvestments.com, or by calling 800-225-5291, Monday to Thursday, 8:00 a.m.—7:00 p.m., and Friday, 8:00 a.m.—6:00 p.m., Eastern time.

Please note that after-tax returns (shown for Class A shares only) reflect the highest individual federal marginal income-tax rate in effect as of the date provided and do not reflect any state or local taxes. Your actual after-tax returns may be different. After-tax returns are not relevant to shares held in an IRA, 401(k), or other tax-advantaged investment plan. After-tax returns for other share classes would vary.

Calendar year total returns (%)—Class A (sales charges are not reflected in the bar chart and returns would have been lower if they were)

Year-to-date total return through:	Q2 2026	10.79%
Best quarter:	Q4 2020	21.65%
Worst quarter:	Q1 2020	-30.10%

John Hancock Disciplined Value Mid Cap Fund

Average annual total returns (%)—as of 12/31/2025	1 year	5 year	10 year
Class A (before tax)	5.45	9.65	9.38
after tax on distributions	3.27	7.81	7.84
after tax on distributions, with sale	4.80	7.44	7.34
Class C	9.18	9.95	9.12
Class I	11.27	11.05	10.22
Class R2	10.85	10.62	9.78
Class R4	11.14	10.90	10.06
Class R6	11.39	11.17	10.33
Russell 3000 Index (reflects no deduction for fees, expenses, or taxes)	17.15	13.15	14.29
Russell Midcap Value Index (reflects no deduction for fees, expenses, or taxes)	11.05	9.83	9.78

Investment management

Investment advisor John Hancock Investment Management LLC

Subadvisor Boston Partners Global Investors, Inc.

Portfolio management

The following individuals are jointly and primarily responsible for the day-to-day management of the fund’s portfolio.

Timothy P. Collard	Steven L. Pollack, CFA
Portfolio Manager Managed the fund since 2023	Portfolio Manager Managed the fund since 2010 and its predecessor since 2001

Purchase and sale of fund shares

The minimum initial investment requirement for Class A and Class C shares is $1,000 ($250 for group investments), except that there is no minimum for certain group retirement plans, certain fee-based or wrap accounts, or certain other eligible investment product platforms. The minimum initial investment requirement for Class I shares is $250,000, except that the fund may waive the minimum for any category of investors at the fund’s sole discretion. There are no minimum initial investment requirements for Class R2 or Class R4 shares. The minimum initial investment requirement for Class R6 shares is $1 million, except that there is no minimum for: qualified and nonqualified plan investors; certain eligible qualifying investment product platforms; Trustees, employees of the advisor or its affiliates, employees of the subadvisor, members of the fund’s portfolio management team and the spouses and children (under age 21) of the aforementioned. There are no subsequent minimum investment requirements.

Class A, Class C, Class I, and Class R6 shares may be redeemed on any business day by mail: John Hancock Signature Services, Inc., P.O. Box 219909, Kansas City, MO 64121-9909; or for most account types through our website: jhinvestments.com; or by telephone: 800-225-5291. Class R2 and Class R4 shares may be redeemed on any business day by contacting your retirement plan administrator or recordkeeper.

Taxes

The fund’s distributions are taxable, and will be taxed as ordinary income and/or capital gains, unless you are investing through a tax-deferred arrangement, such as a 401(k) plan or individual retirement account. Withdrawals from such tax-deferred arrangements may be subject to tax at a later date.

Payments to broker-dealers and other financial intermediaries

If you purchase the fund through a broker-dealer or other financial intermediary (such as a bank, registered investment advisor, financial planner, or retirement plan administrator), the fund and its related companies may pay the broker-dealer or other intermediary for the sale of fund shares and related services. These payments may create a conflict of interest by influencing the broker-dealer or other intermediary and your salesperson to recommend the fund over another investment. These payments are not applicable to Class R6 shares. Ask your salesperson or visit your financial intermediary’s website for more information.