Calvert Social Investment Fund

10/16/2025 | Press release | Distributed by Public on 10/16/2025 06:49

Prospectus by Investment Company (Form 497)

CALVERT BALANCED FUND

CALVERT EQUITY FUND

CALVERT FOCUSED VALUE FUND

CALVERT MID-CAP FUND

CALVERT SMALL-CAP FUND

(the "Funds")

Supplement to Prospectus and Statement of Additional Information ("SAI")

dated February 1, 2025

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

1. The following replaces "Portfolio Managers" under "Management" in "Fund Summaries - Calvert Focused Value Fund" in the Funds' Prospectus:

Portfolio Managers

Bradley T. Galko, CFA, Managing Director of Morgan Stanley and Vice President of CRM, has managed the Fund since its inception in April 2022.

Jason Kritzer, CFA, Managing Director of Morgan Stanley and Vice President of CRM, has managed the Fund since October 16, 2025.

2. The following replaces the third paragraph under "Focused Value Fund." under "Management and Organization" in the Funds' Prospectus:

Bradley T. Galko, CFA and Jason Kritzer, CFA are portfolio managers of the Fund. Mr. Galko has served as portfolio manager of the Fund since its inception in April 2022 and Mr. Kritzer has served as portfolio manager of the Fund since October 16, 2025. Messrs. Galko and Kritzer are Managing Directors of Morgan Stanley and Vice Presidents of CRM and have been employees of the Morgan Stanley organization for more than five years. They each currently manage other funds.

3. The following replaces Aaron S. Dunn in the tables under "Portfolio Managers." in "Investment Advisory and Administrative Services" in the Funds' SAI:

Number of

All Accounts

Total Assets of

All Accounts

Number of Accounts

Paying a Performance Fee

Total Assets of Accounts

Paying a Performance Fee

Jason Kritzer(6)
Registered Investment Companies(3) 1 $835.8 0 $0
Other Pooled Investment Vehicles 0 $0 0 $0
Other Accounts 0 $0 0 $0

(3)     Includes the Fund.

(6)     As of August 31, 2025.

Fund Name and

Portfolio Managers

Dollar Range of Equity Securities

Beneficially Owned in the Fund

Aggregate Dollar Range of Equity

Securities Beneficially Owned in the

Eaton Vance Family of Funds

Focused Value Fund
Jason Kritzer $0(1) $0

(1)     As of August 31, 2025.

October 16, 2025 48653-00 10.16.25
Calvert Social Investment Fund published this content on October 16, 2025, and is solely responsible for the information contained herein. Distributed via EDGAR on October 16, 2025 at 12:49 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]