Summary Prospectus by Investment Company (Form 497K)

John Hancock Variable Insurance Trust

Summary prospectus

Ultra Short Term Bond Trust

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 dfinview.com/johnhancock?site=funds. You can also get this information at no cost by sending an email request to webmail@jhancock.com or calling 800-732-5543, or if your policy is held through another insurance company, please contact that company. The fund's prospectus and Statement of Additional Information, both dated April 28, 2025, as may be supplemented, and most recent financial highlights information included in the shareholder report, dated December 31, 2024, are incorporated by reference into this summary prospectus. This summary prospectus is intended for use in connection with a variable contract as defined in Section 817(d) of the Internal Revenue Code and is not intended for use by other investors. 

Tickers
Series I: JAGJX	Series II: JAGEX	Series NAV: JAGFX

Investment objective

The fund seeks a high level of current income consistent with the maintenance of liquidity and the preservation of capital.

Fees and expenses

This table describes the fees and expenses that you may pay if you buy, hold, and sell shares of the fund. The fees and expenses do not reflect fees and expenses of any variable insurance or variable annuities contract that may use the fund as its underlying investment option and would be higher if they did. 

Annual fund operating expenses (%) (expenses that you pay each year as a percentage of the value of your investment)	Series I	Series II	Series NAV
Management fee	0.55	0.55	0.55
Distribution and service (Rule 12b-1) fees	0.05	0.25	0.00
Other expenses	0.08	0.08	0.08
Total annual fund operating expenses	0.68	0.88	0.63
Contractual expense reimbursement	-0.01 1	-0.01 1	-0.01 1
Total annual fund operating expenses after expense reimbursements	0.67	0.87	0.62

Expense example

The examples are intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The examples assume that $10,000 is invested in the fund for the periods indicated and then all shares are redeemed at the end of those periods. The examples also assume that the investment has a 5% return each year and that the fund's operating expenses remain the same. The expense example does not reflect fees and expenses of any variable insurance contract that may use the fund as its underlying investment option and would be higher if they did. Although your actual costs may be higher or lower, based on these assumptions your costs would be: 

Expenses ($)	Series I	Series II	Series NAV
1 year	68	89	63
3 years	217	280	201
5 years	378	487	350
10 years	846	1,083	785

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. 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 69% of the average value of its portfolio.

Principal investment strategies

Under normal circumstances, the fund invests at least 80% of its net assets in a diversified portfolio of domestic, investment grade, debt securities. (The fund will provide written notice to shareholders at least 60 days prior to a change in its 80% investment policy.) Debt securities may be issued by governments, companies or special purpose entities and may include notes, discount notes, bonds, debentures, commercial paper, repurchase agreements, mortgage-backed and other asset-backed securities and assignments, participations and other interests in bank loans.  Direct investments in loans may be illiquid and holding a loan could expose the fund to the risks of being a direct lender. The fund may also invest in cash and cash equivalents. The fund's investment policies are based on credit ratings at the time of purchase.

Investment grade securities include securities that are rated in one of the four highest rating categories as determined by a nationally recognized statistical rating organization, such as S&P Global Ratings ("S&P"), Fitch Ratings ("Fitch") or Moody's Investors Service ("Moody's"), or are unrated securities determined by the subadvisor to be of comparable quality.

The fund may invest up to 20% of its net assets in securities that are rated BBB by S&P or Fitch, Baa by Moody's, or unrated securities determined by the subadvisor to be of comparable quality. The fund may invest up to 20% of its net assets in foreign debt securities, including up to 5% of its net assets in foreign debt securities that are denominated in a foreign currency.

Under normal circumstances, the fund's dollar weighted average maturity will be two years or less and its duration will be one year or less. Up to 15% of the fund's net assets may be invested in securities with maturities greater than three years.

Use of Hedging and Other Strategic Transactions. The fund is authorized to use various hedging, derivatives and other strategic transactions described under "Additional Information about the Funds' Principal Risks - Hedging, derivatives and other strategic transactions risk."

The fund may invest in derivatives, including futures, currency forwards, options, swap contracts and other derivative instruments. The fund may invest in derivatives for both hedging and non-hedging purposes, including, for example, to seek to enhance returns or as a substitute for a position in an underlying asset.

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 255 of the prospectus.

Cash and cash equivalents risk. Under certain market conditions, such as during a rising stock market, rising interest rate or rising credit spread markets, the use of cash and/or cash equivalents, including money market instruments, could have a negative effect on the fund's ability to achieve its investment objective and may negatively impact the fund's performance.

Changing distribution levels risk. The fund may cease or reduce the level of its distribution if income or dividends paid from its investments declines.

Credit and counterparty risk. The issuer or guarantor of a fixed-income security, the counterparty to an over-the-counter derivatives contract, or a borrower of fund securities may not make timely payments or otherwise honor its obligations. U.S. government securities are subject to varying degrees of credit risk depending upon the nature of their support. A downgrade or default affecting any of the fund's securities could affect the fund's performance.

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.

Fixed-income securities risk. A rise in interest rates typically causes bond prices to fall. The longer the average maturity or duration of the bonds held by a fund, the more sensitive it will likely be to interest-rate fluctuations. An issuer may not make all interest payments or repay all or any of the principal borrowed. Changes in a security's credit quality may adversely affect fund performance.

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.

Hedging, derivatives, and other strategic transactions risk. Hedging, derivatives, and other strategic transactions may increase a fund's volatility and could produce disproportionate losses, potentially more than the fund's principal investment. Risks of these transactions are different from and possibly greater than risks of investing directly in securities and other traditional instruments. Under certain market conditions, derivatives could become harder to value or sell and may become subject to liquidity risk (i.e., the inability to enter into closing transactions). Derivatives and other strategic transactions that the fund intends to utilize include: foreign currency forward contracts, futures contracts, options, swaps, foreign currency swaps, interest-rate swaps, credit default swaps, swaptions, equity-linked notes (equity-linked notes generally reflect the risks associated with their underlying securities, depend on the credit of the note's issuer, may be privately placed, and may have a limited secondary market), inverse floating-rate securities, reverse repurchase agreements, total return swaps, and options on futures. Foreign currency forward contracts, futures contracts, options, and swaps generally are subject to counterparty risk. In addition, swaps may be subject to interest-rate and settlement risk, and the risk of default of the underlying reference obligation. Derivatives associated with foreign currency transactions are subject to currency risk. An event of default or insolvency of the counterparty to a reverse repurchase agreement could result in delays or restrictions with respect to the fund's ability to dispose of the underlying securities, in addition, a reverse repurchase agreement may be considered a form of leverage and may, therefore, increase fluctuations in the fund's net asset value per share (NAV).

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.

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. Liquidity risk may be magnified in rising interest rate environments due to higher than normal redemption rates. Widespread selling of fixed-income securities to satisfy redemptions during periods of reduced demand may adversely impact the price or salability of such securities. Periods of heavy redemption could cause the fund to sell assets at a loss or depressed value, which could negatively affect performance. Redemption risk is heightened during periods of declining or illiquid markets.

Loan participations risk. Participations and assignments involve special types of risks, including credit risk, interest-rate risk, counterparty risk, liquidity risk, risks associated with extended settlement, and the risks of being a lender.

Mortgage-backed and asset-backed securities risk. Mortgage-backed and asset-backed securities are subject to different combinations of prepayment, extension, interest-rate, and other market risks. Factors that impact the value of these securities include interest rate changes, the reliability of available information, credit quality or enhancement, and market perception.

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.

Repurchase agreements risk. The risk of a repurchase agreement transaction is limited to the ability of the seller to pay the agreed-upon sum on the delivery date. In the event of bankruptcy or other default by the seller, the instrument purchased may decline in value, interest payable on the instrument may be lost and there may be possible difficulties and delays in obtaining collateral and delays and expense in liquidating the instrument.

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.

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 does not indicate future results. The ICE BofA 6 Month U.S. Treasury Bill Index shows how the fund's performance compares against the returns of similar investments. All figures assume dividend reinvestment. The performance information below does not reflect fees and expenses of any variable insurance contract which may use JHVIT as its underlying investment option. If such fees and expenses had been reflected, performance would be lower.

Calendar year total returns (%)-Series I   

Best quarter:	Q2 2020	2.02%
Worst quarter:	Q1 2022	-0.98%

 

Average annual total returns (%)-as of 12/31/2024	1 year	5 year	10 year
Series I	4.97	1.92	1.52
Series II	4.78	1.72	1.33
Series NAV	5.01	1.98	1.58
Bloomberg U.S. Aggregate Bond Index (reflects no deduction for fees, expenses, or taxes)1	1.25	-0.33	1.35
ICE BofA 6 Month U.S. Treasury Bill Index (reflects no deduction for fees, expenses, or taxes)	5.35	2.57	1.91

Investment management

Investment advisor John Hancock Variable Trust Advisers LLC

Subadvisor Manulife Investment Management (US) LLC

Portfolio management

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

Howard C. Greene, CFA	Jeffrey N. Given, CFA	Pranay Sonalkar, CFA	Connor Minnaar, CFA
Senior Portfolio Manager, Co-Head of U.S. Core and Core-Plus Fixed Income Managed fund since 2010	Senior Portfolio Manager, Co-Head of U.S. Core and Core-Plus Fixed Income Managed fund since 2010	Portfolio Manager Managed fund since 2021	Portfolio Manager Managed fund since 2022

Purchase and redemption of fund shares

Shares of the fund are not sold directly to the public but generally may be sold only to insurance companies and their separate accounts as the underlying investment options for variable annuity and variable life insurance contracts issued by such companies, to certain entities affiliated with the insurance companies, to those funds of JHVIT that operate as funds of funds and invest in other funds and to certain qualified retirement plans (qualified plans).

Shares of the fund are offered continuously, without sales charge, and are sold and redeemed each business day (which typically is any day the New York Stock Exchange is open) at a price equal to their net asset value (NAV) determined for that business day as set forth under "Valuation of shares" in this prospectus. The Portfolio does not have minimum initial or subsequent investment requirements. Payment for shares redeemed will generally be made within seven days after receipt of a proper notice of redemption.

Taxes

Because shares of the fund may be purchased only through variable insurance contracts and qualified plans, it is expected that any dividends or capital gains distributions made by the fund will be exempt from current federal taxation if left to accumulate within the variable contract or qualified plan. Holders of variable insurance contracts should consult the prospectuses of their respective contracts for information on the federal income tax consequences to such holders.

Compensation of financial intermediaries

The fund is not sold directly to the general public but instead is offered as an underlying investment option for variable insurance contracts. The distributors of these contracts, the insurance companies that issue the contracts and their related companies (Related Parties), may pay compensation to broker-dealers and other intermediaries for distribution and other services and may enter into revenue sharing arrangements with certain intermediaries. The fund pays fees to the Related Parties for management, distribution and other services. Payments by insurance and related companies to intermediaries may create a conflict of interest by influencing them and their salespersons to recommend such contracts over other investments. Ask your salesperson or visit your financial intermediary's website for more information. In addition, payments by the funds to Related Parties may be a factor that an insurance company considers in including the funds as underlying investment options in variable insurance contracts. The prospectus (or other offering document) for your variable insurance contract may contain additional information about these payments.