Legg Mason Partners Institutional Trust

04/17/2026 | Press release | Distributed by Public on 04/17/2026 07:08

Prospectus by Investment Company (Form 497)

WSMAS-P1 04/26

LEGG MASON PARTNERS INSTITUTIONAL TRUST
SUPPLEMENT DATED APRIL 17, 2026
TO THE PROSPECTUS AND
STATEMENT OF ADDITIONAL INFORMATION ("SAI")
DATED JULY 1, 2025, OF
WESTERN ASSET SMASH SERIES C FUND (THE "FUND")

All changes described below are effective May 1, 2026.

I. The following is added to the section titled "Management - Investment professionals" in the Fund's Prospectus:

Investment professional

Title

Investment
professional of
the fund since

Dan Alexander

Deputy CIO, Portfolio Manager

May 2026

Molly Schwartz

Portfolio Manager

May 2026

II. The following is added to the section titled "More on fund management - Investment professionals" in the Fund's Prospectus:

Investment professional

Title and recent
biography

Investment
professional of
the fund since

Dan Alexander

Portfolio Manager and has been employed by Western Asset as an investment professional for at least the past five years

May 2026

Molly Schwartz

Portfolio Manager and has been employed by Western Asset as an investment professional for at least the past five years.

May 2026

III. The following is added to the table in the section titled "Investment Professionals - Other Accounts Managed by the Investment Professionals" in the Fund's SAI:

Investment
Professionals

Type of

Account

Number of
Accounts
Managed

Total

Assets
Managed
(Billions)

($)

Number of
Accounts
Managed for
which Advisory
Fee is
Performance-
Based

Assets
Managed for
which Advisory
Fee is
Performance-
Based
(Billions) ($)

Dan

Alexander*

Registered Investment Companies

4

1.02

None

None

Other Pooled Investment Vehicles

9

6.90

None

None

Other Accounts

53

22.87

4

1.51

Molly

Scwartz*

Registered Investment Companies

4

1.02

None

None

Other Pooled Investment Vehicles

9

6.90

None

None

Other Accounts

54

24.73

4

1.51

* The information is as of March 31, 2026.

IV. The following is added to the table in the section titled "Investment Professionals - Investment Professional Securities Ownership" in the Fund's SAI:

Investment Professionals

Dollar Range of Ownership of Securities ($) 

Dan Alexander*

None

Molly Schwartz*

None

* The information is as of March 31, 2026.

V. The following footnote is added following each reference to Julien Scholnick in the Summary Prospectus, Prospectus and SAI of each fund listed in Schedule A:

* Effective September 30, 2026, Julien Scholnick will step down as a member of the investment professional team for the fund.

Please retain this supplement for future reference.

Legg Mason Partners Institutional 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 13:08 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]