Franklin Municipal Securities Trust

04/17/2026 | Press release | Distributed by Public on 04/17/2026 07:18

Prospectus by Investment Company (Form 497)

GOF-P12 04/26

SUPPLEMENT DATED APRIL 17, 2026
TO THE SUMMARY PROSPECTUS, PROSPECTUS AND
STATEMENT OF ADDITIONAL INFORMATION ("SAI")
OF EACH FUND LISTED IN SCHEDULE A

All changes described below are effective June 20, 2026.

1. The following replaces the reference to John Wiley in the section titled "Fund Summary - Portfolio Managers" in the Summary Prospectus and Prospectus of each fund listed in Schedule A:

Daniel Workman, CFA
Vice President of Advisers and portfolio manager of the Fund since June 2026.

2. The following replaces the reference to John Wiley in the section titled "Fund Details - Management" in the Prospectus of each fund listed in Schedule A:

Daniel Workman, CFA Portfolio Manager of Advisers

Mr. Workman has been a portfolio manager of the Fund since June 2026. He joined Franklin Templeton in 2003.

3. The following replaces references to John Wiley in the table in the section titled "Management and Other Services - Portfolio managers" in the SAI of each fund listed in Schedule A:

Name

Type of
Account

Number of

Accounts

Managed

Total Assets

Managed

(x $1 million)

Number of Accounts

Managed for which

Advisory Fee is

Performance-Based

Assets Managed for which

Advisory Fee is

Performance-Based

(x $1 million)

Daniel Workman*

Registered

Investment

Companies

10

20,600.5

None

None

Other Pooled

Investment

Vehicles

2

238.1

None

None

Other

Accounts

3

6.9

None

None

*Information is provided as of February 28, 2026.

4. The following replaces references to John Wiley in the table in the section titled "Management and Other Services - Portfolio managers - Ownership of Fund shares" in the SAI of each fund listed in Schedule A:

Portfolio Manager

Dollar Range of Fund Shares Beneficially Owned

Daniel Workman*

None

*Information is provided as of March 31, 2026.

SCHEDULE A

Fund

Date of Summary Prospectus, Prospectus and SAI

FRANKLIN MUNICIPAL SECURITIES TRUST

Franklin California High Yield Municipal Fund

July 1, 2025

FRANKLIN STRATEGIC SERIES

Franklin Templeton SMACS: Series CH

January 1, 2026

Please retain this supplement for future reference.

Franklin Municipal Securities Trust published this content on April 17, 2026, and is solely responsible for the information contained herein. Distributed via EDGAR on April 17, 2026 at 13:18 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]