Prospectus by Investment Company - Form 497

Prospectus Supplement

John Hancock Investment Trust
John Hancock ESG Large Cap Core Fund (the fund)

Supplement dated October 28, 2024 to the current Prospectus, as may be supplemented (the Prospectus)

As of October 31, 2024 (the Effective Date), Samantha D'Amore will no longer serve as a portfolio manager of the fund. As of the Effective Date, Mitali Prasad, CFA, and Cheryl I. Smith, Ph.D., CFA, will continue to serve as portfolio managers of the fund and will be jointly and primarily responsible for the day-to-day management of the fund's portfolio. Accordingly, as of the Effective Date, all references to Ms. D'Amore will be removed from the Prospectus.

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 ESG Large Cap Core Fund (the fund)

Supplement dated October 28, 2024 to the current Statement of Additional Information, as may be supplemented (the SAI)

As of October 31, 2024 (the Effective Date), Samantha D'Amore will no longer serve as a portfolio manager of the fund. As of the Effective Date, Mitali Prasad, CFA, and Cheryl I. Smith, Ph.D., CFA, will continue to serve as portfolio managers of the fund and will be jointly and primarily responsible for the day-to-day management of the fund's portfolio. Accordingly, as of the Effective Date, all references to Ms. D'Amore will be removed from the SAI.

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