N-PX: Filer Information

Filer CIK

0001140869

Filer CCC

********

Date of Report

06/30/2024

Are you a Registered Management Investment Company or an Institutional Manager?

Registered Management Investment Company

Filer Investment Company Type

Form N-1A Filer (Mutual Fund)

Is this a LIVE or TEST Filing?

LIVE

TEST

Is this an electronic copy of an official filing submitted in paper format?

Submission Contact Information

Name

Phone Number

E-mail Address

Notification Information

Notify via Filing Website only?

N-PX: Cover Page

Name and address of reporting person:

Name of reporting person (For registered management investment companies, provide exact name of registrant as specified in charter)

Master Portfolio Trust

Street 1

620 EIGHTH AVENUE

Street 2

47TH FLOOR

City

NEW YORK

State/Country

NEW YORK

Zip code and zip code extension or foreign postal code

10018

Telephone number of reporting person, including area code:

877-721-1926

Name and address of agent for service:

Name of agent for service

Thomas C. Mandia

Street 1

100 First Stamford Place

Street 2

City

Stamford

State/Country

CONNECTICUT

Zip code and zip code extension or foreign postal code

06902

Reporting Period:

Report for the year ended June 30, 2024

SEC Investment Company Act or Form 13F File Number:

811-10407

CRD Number (if any):

Other SEC File Number (if any):

Legal Entity Identifier (if any):

Report Type (check only one):

Registered Management Investment Company.

Fund Voting Report (Check here if the registered management investment company held one or more securities it was entitled to vote.)

Fund Notice Report (Check here if the registered management investment company did not hold any securities it was entitled to vote.)

Institutional Manager.

Institutional Manager Voting Report (Check here if all proxy votes of this reporting manager are reported in this report.)

Institutional Manager Notice Report (Check here if no proxy votes are reported in this report and complete the notice report filing explanation section below)

Institutional Manager Combination Report (Check here if a portion of the proxy votes for this reporting manager are reported in this report and a portion are reported by other reporting person(s).)

Do you wish to provide explanatory information pursuant to Special Instruction B.4?:

Yes

Additional information:

N-PX: Summary - Included Managers

Master Portfolio Trust

By (Signature):

Jane E. Trust

By (Printed Signature):

Jane E. Trust

By (Title):

President and Chief Executive Officer

Date:

08/19/2024

N-PX: Filer Information

Submission Contact Information

Notification Information

N-PX: Series/Class (Contract) Information

N-PX: Cover Page

Name and address of reporting person:

Name and address of agent for service:

Report Type (check only one):

N-PX: Summary - Included Managers

N-PX: Summary - Included Series

Information about the Series:1

Information about the Series:2

Information about the Series:3

Information about the Series:4

N-PX: Signature Block