Calvert Management Series

09/10/2025 | Press release | Distributed by Public on 09/10/2025 12:31

Prospectus by Investment Company (Form 497)

CALVERT FLEXIBLE BOND FUND

Supplement to Prospectus dated May 1, 2025

as may be supplemented and/or revised from time to time

The following change is effective immediately:

The following replaces the fifth paragraph in "Principal Investment Strategies" under "Fund Summary":

Under normal circumstances, the average portfolio duration of the Fund will vary from zero (0) years to positive six (6) years. Average portfolio duration will vary depending on the portfolio managers' outlook on changing market, economic, and political conditions.

September 10, 2025

48646-00 9.10.25

Calvert Management Series published this content on September 10, 2025, and is solely responsible for the information contained herein. Distributed via SEC EDGAR on September 10, 2025 at 18:31 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]