Prospectus by Investment Company (Form 497)

 

Prospectus Supplement

John Hancock Investment Trust
John Hancock Global Climate Action Fund (the fund)

Supplement dated March 10, 2026 to the current Prospectus, as may be supplemented (the Prospectus)

Effective immediately, Jakub Sulimierski, CFA is added as portfolio manager of the fund. Steve Bélisle, BBA, M.Sc., CFA, Patrick Blais, FSA, CFA, Brian Chan, CFA, Derek Chan, MBA, CPA, CGA, CFA, and Cavan Yie, MBA, CFA will continue as portfolio managers of the fund and together with Jakub Sulimierski are jointly and primarily responsible for the day-to-day management of the fund's portfolio. Accordingly, the following information is added under the heading "Portfolio management" in the "Fund Summary" section for the fund.

Jakub Sulimierski, CFA
Portfolio Manager
Managed the fund since 2026

Additionally, the following information is added under the heading "Who's who - Subadvisor" in the "Fund details" section for the fund:

Jakub Sulimierski, CFA

You should read this supplement in conjunction with the Prospectus and retain it for your future reference.

 

Statement of Additional Information Supplement

John Hancock Investment Trust
John Hancock Global Climate Action Fund

Supplement dated March 10, 2026 to the current Statement of Additional Information, as may be supplemented (the SAI)

Effective immediately, Jakub Sulimierski, CFA is added as portfolio manager of the fund. Steve Bélisle, BBA, M.Sc., CFA, Patrick Blais, FSA, CFA, Brian Chan, CFA, Derek Chan, MBA, CPA, CGA, CFA, and Cavan Yie, MBA, CFA will continue as portfolio managers of the fund, and together with Jakub Sulimierski, CFA are jointly and primarily responsible for the day-to-day management of the fund's portfolio. Accordingly, the following information regarding Jakub Sulimierski, supplements the information presented in Appendix B - Portfolio Manager Information, which provides additional information about the portfolio managers of the fund's subadvisor, Manulife Investment Management (US) LLC:

PORTFOLIO MANAGERS AND OTHER ACCOUNTS MANAGED

The following table provides information regarding other accounts for which each portfolio manager listed above has day-to-day management responsibilities. Accounts are grouped into three categories: (i) other investment companies (and series thereof); (ii) other pooled investment vehicles; and (iii) other accounts. To the extent that any of these accounts pay advisory fees that are based on account performance ("performance-based fees"), information on those accounts is specifically broken out. In addition, any assets denominated in foreign currencies have been converted into U.S. dollars using the exchange rates as of the applicable date. Also shown below the table is each portfolio manager's investment in the fund and similarly managed accounts.

The following table provides information for each of the portfolio managers as of December 31, 2025: 

	Other Registered Investment Companies		Other Pooled Investment Vehicles		Other Accounts
Portfolio Manager	Number of Accounts	Assets (in millions)	Number of Accounts	Assets (in millions)	Number of Accounts	Assets (in millions)
Jakub Sulimierski	0	$0	18	$6,238	25	$7,996

Performance-Based Fees for Other Accounts Managed. Of the accounts listed in the table above, those for which the subadvisor receives a fee based on investment performance are listed in the table below. 

	Other Registered Investment Companies		Other Pooled Investment Vehicles		Other Accounts
Portfolio Manager	Number of Accounts	Assets (in millions)	Number of Accounts	Assets (in millions)	Number of Accounts	Assets (in millions)
Jakub Sulimierski	0	$0	0	$0	0	$0

Ownership of the Funds and Similarly Managed Accounts

The following table shows the dollar range of fund shares and shares of similarly managed accounts beneficially owned by the portfolio manager listed above as of December 31, 2025. For purposes of this table, "similarly managed accounts" include all accounts that are managed (i) by the same portfolio managers that are jointly and primarily responsible for the day-to-day management of the fund; and (ii) with an investment style, objective, policies and strategies substantially similar to those that are used to manage the fund. Each portfolio manager's ownership of fund shares is stated in the footnote(s) below the table. 

Portfolio Manager	Dollar Range of Shares Owned1
Jakub Sulimierski	$10,001 - $50,000

1As of December 31, 2025, Jakub Sulimierski beneficially owned $0 of the fund.

You should read this supplement in conjunction with the SAI and retain it for your future reference.