Statement of Additional Information Supplement

April 30, 2026

Morgan Stanley Institutional Liquidity Funds

Supplement dated April 30, 2026 to the Morgan Stanley Institutional Liquidity Funds Statement of Additional Information dated February 27, 2026

Government Portfolio

Government Securities Portfolio

Prime Portfolio

Treasury Portfolio

Treasury Securities Portfolio

Effective immediately, the table in the section of the Statement of Additional Information entitled "Disclosure of Portfolio Holdings" is hereby deleted and replaced with the following:

Name

 

Frequency1

 

Lag Time

 

Service Providers

 

 

 

 

 

State Street Bank and
Trust Company

 

Daily basis
 

 

Daily
 

 

BlackRock Financial
Management Inc.

 

Daily basis
 

 

2
 

 

KellyCo Marketing
 

 

As needed
 

 

Varying lag times after the date of
the information

 

Financial Recovery Technologies

 

Daily basis

 

Daily

 

Portfolio Analytics Providers

         

Bloomberg Finance, L.P.

 

Daily basis

 

2

 

Abel Noser Solutions, LLC

 

Daily basis

 

Daily

 

1  Dissemination of portfolio holdings information to entities listed above may occur less frequently than indicated (or not at all).

2  Information will typically be provided on a real time basis or as soon thereafter as possible.

Please retain this supplement for future reference.