# EDGAR Filing Document

**Accession Number:** 0000889512
**File Stem:** 0001145549-25-038831
**Filing Date:** 2025-6
**Character Count:** 17865
**Document Hash:** f58487091887018c2e4b7a07c726b562
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001145549-25-038831.hdr.sgml**: 20250606

**ACCESSION NUMBER**: 0001145549-25-038831

**CONFORMED SUBMISSION TYPE**: N-MFP3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250531

**FILED AS OF DATE**: 20250606

**DATE AS OF CHANGE**: 20250606

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** LEGG MASON PARTNERS INSTITUTIONAL TRUST
- **CENTRAL INDEX KEY:** 0000889512

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** MD
- **FISCAL YEAR END:** 0831

**FILING VALUES:**
- **FORM TYPE:** N-MFP3
- **SEC ACT:** 1940 Act
- **SEC FILE NUMBER:** 811-06740
- **FILM NUMBER:** 251029715

**BUSINESS ADDRESS:**
- **STREET 1:** LEGG MASON & CO., LLC
- **STREET 2:** 620 EIGHTH AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10018
- **BUSINESS PHONE:** 1-877-721-1926

**MAIL ADDRESS:**
- **STREET 1:** LEGG MASON & CO., LLC
- **STREET 2:** 620 EIGHTH AVENUE
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10018

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** CITIFUNDS INSTITUTIONAL TRUST
- **DATE OF NAME CHANGE:** 19981030

## Series and Classes Contracts Data

### Western Asset Premier Institutional U.S. Treasury Reserves (Series ID: S000066841)

| Class ID   | Class Name     | Ticker Symbol   |
|:---|:---|:---|
| C000215196 | Premium Shares | WAEXX           |
| C000215197 | Capital Shares | WADXX           |

# Form N-MFP3: Monthly Schedule of Portfolio Holdings

## N-MFP: Filer Information
**Submission Type:** N-MFP3
**CIK:** 0000889512

### General Information

**Report for (YYYY-MM-DD):** 2025-05-31

**Registrant Full Name:** Legg Mason Partners Institutional Trust

**CIK Number of Registrant:** 0000889512

**LEI of Registrant:** 54930003LJE4ZPPMRV82

**Name of Series:** Western Asset Premier Institutional U.S. Treasury Reserves

**LEI of Series:** 549300FS1J68EF5THY28

**EDGAR Series Identifier:** S000066841

**Total number of share classes in the series:** 2

**Is this the fund's final filing on Form N-MFP?:** No

**Has the fund acquired or merged with another fund?:** No

## Part A: Series-Level Information about the Fund

### Service Providers
| Role                          | Details                                                      | File/CIK Number   |
|:---|:---|:---|
| Investment Adviser            | Franklin Templeton Fund Adviser LLC                          | 801-66785         |
| Independent Public Accountant | PricewaterhouseCoopers LLP<br>City: Baltimore<br>State: MD   |  |
| Transfer Agent                | BNY Mellon Investment Servicing (US) Inc.<br>CIK: 0000849542 | 084-01761         |

### Fund Characteristics & Assets

- **Securities Act File Number:** 033-49552

- **Is this a Feeder Fund?:** Yes

- **Is this a Master Fund?:** No

- **Is this series for insurance company separate accounts?:** No

- **Money Market Fund Category:** Government

- **Is this a Retail Money Market Fund?:** No

- **Is this a Government Money Market Fund?:** No

- **WAM:** 6 days

- **WAL:** 6 days

- **Total Value of Portfolio Securities:** $2136445521.50

- **Amortized Cost of Portfolio Securities:** $0.00

- **Cash:** $0.00

- **Total Other Assets:** $23235.46

- **Total Liabilities:** $8346471.09

- **Net Assets of Series:** $2128122285.87

- **Number of Shares Outstanding (Series):** 2128137922.0300

- **Does the fund seek to maintain a stable price per share?:** Yes

- **Stable Price Per Share:** $1.00

- **Is cash management vehicle an affiliated fund?:** No

- **Does the fund apply liquidity fees?:** No

### Daily & Weekly Liquid Assets
| Date       | Daily Liquid Assets ($)   | Weekly Liquid Assets ($)   | Daily Liquid Assets (%)   | Weekly Liquid Assets (%)   |
|:---|:---|:---|:---|:---|
| 2025-05-01 | $18632215421.88           | $18632215421.88            | 99.9300%                  | 99.9300%                   |
| 2025-05-02 | $18589587552.00           | $18589587552.00            | 99.9200%                  | 99.9200%                   |
| 2025-05-05 | $19622075446.49           | $19622075446.49            | 99.9200%                  | 99.9200%                   |
| 2025-05-06 | $18232881865.61           | $18232881865.61            | 99.9100%                  | 99.9100%                   |
| 2025-05-07 | $18019972097.37           | $18019972097.37            | 99.9100%                  | 99.9100%                   |
| 2025-05-08 | $17887911213.26           | $17887911213.26            | 99.9100%                  | 99.9100%                   |
| 2025-05-09 | $17853032293.97           | $17853032293.97            | 99.9000%                  | 99.9000%                   |
| 2025-05-12 | $17885902698.20           | $17885902698.20            | 99.8900%                  | 99.8900%                   |
| 2025-05-13 | $17483678107.27           | $17483678107.27            | 99.8900%                  | 99.8900%                   |
| 2025-05-14 | $17465997064.68           | $17465997064.68            | 99.8800%                  | 99.8800%                   |
| 2025-05-15 | $17655081360.39           | $17655081360.39            | 99.8900%                  | 99.8900%                   |
| 2025-05-16 | $17996926635.11           | $17996926635.11            | 99.8800%                  | 99.8800%                   |
| 2025-05-19 | $18669507015.04           | $18669507015.04            | 99.8800%                  | 99.8800%                   |
| 2025-05-20 | $18457642945.92           | $18457642945.92            | 99.8800%                  | 99.8800%                   |
| 2025-05-21 | $17958272698.20           | $17958272698.20            | 99.8700%                  | 99.8700%                   |
| 2025-05-22 | $17730689475.32           | $17730689475.32            | 99.8600%                  | 99.8600%                   |
| 2025-05-23 | $17978166829.51           | $17978166829.51            | 99.8500%                  | 99.8500%                   |
| 2025-05-27 | $17902891281.98           | $17902891281.98            | 99.8500%                  | 99.8500%                   |
| 2025-05-28 | $17872400948.47           | $17872400948.47            | 99.8500%                  | 99.8500%                   |
| 2025-05-29 | $18321311708.07           | $18321311708.07            | 99.8500%                  | 99.8500%                   |
| 2025-05-30 | $18525833517.64           | $18525833517.64            | 99.8500%                  | 99.8500%                   |

### 7-Day Gross Yield
| Date       | 7-Day Gross Yield   |
|:---|:---|
| 2025-05-01 | 4.3400%             |
| 2025-05-02 | 4.3300%             |
| 2025-05-05 | 4.3300%             |
| 2025-05-06 | 4.3300%             |
| 2025-05-07 | 4.3200%             |
| 2025-05-08 | 4.3300%             |
| 2025-05-09 | 4.3300%             |
| 2025-05-12 | 4.3300%             |
| 2025-05-13 | 4.3300%             |
| 2025-05-14 | 4.3300%             |
| 2025-05-15 | 4.3400%             |
| 2025-05-16 | 4.3400%             |
| 2025-05-19 | 4.3500%             |
| 2025-05-20 | 4.3500%             |
| 2025-05-21 | 4.3500%             |
| 2025-05-22 | 4.3500%             |
| 2025-05-23 | 4.3500%             |
| 2025-05-27 | 4.3500%             |
| 2025-05-28 | 4.3500%             |
| 2025-05-29 | 4.3500%             |
| 2025-05-30 | 4.3400%             |

### Daily Net Asset Value per Share (Series)
| Date       | Net Asset Value per Share   |
|:---|:---|
| 2025-05-01 | 1.0000                      |
|  |  |
| 2025-05-02 | 1.0000                      |
|  |  |
| 2025-05-05 | 1.0000                      |
|  |  |
| 2025-05-06 | 1.0000                      |
|  |  |
| 2025-05-07 | 1.0000                      |
|  |  |
| 2025-05-08 | 1.0000                      |
|  |  |
| 2025-05-09 | 1.0000                      |
|  |  |
| 2025-05-12 | 1.0000                      |
|  |  |
| 2025-05-13 | 1.0000                      |
|  |  |
| 2025-05-14 | 1.0000                      |
|  |  |
| 2025-05-15 | 1.0000                      |
|  |  |
| 2025-05-16 | 1.0000                      |
|  |  |
| 2025-05-19 | 1.0000                      |
|  |  |
| 2025-05-20 | 1.0000                      |
|  |  |
| 2025-05-21 | 1.0000                      |
|  |  |
| 2025-05-22 | 1.0000                      |
|  |  |
| 2025-05-23 | 1.0000                      |
|  |  |
| 2025-05-27 | 1.0000                      |
|  |  |
| 2025-05-28 | 1.0000                      |
|  |  |
| 2025-05-29 | 1.0000                      |
|  |  |
| 2025-05-30 | 1.0000                      |
|  |  |

## Part B: Class-Level Information about the Fund

### Class: PC

- **Minimum Initial Investment:** $1.00

- **Net Assets of Class:** $2055091221.62

- **Number of Shares Outstanding:** 2055109350.2200

- **Expense Reimbursement/Waiver:** 286641.99

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-05-01 | 1.0000          |
|  |  |
| 2025-05-02 | 1.0000          |
|  |  |
| 2025-05-05 | 1.0000          |
|  |  |
| 2025-05-06 | 1.0000          |
|  |  |
| 2025-05-07 | 1.0000          |
|  |  |
| 2025-05-08 | 1.0000          |
|  |  |
| 2025-05-09 | 1.0000          |
|  |  |
| 2025-05-12 | 1.0000          |
|  |  |
| 2025-05-13 | 1.0000          |
|  |  |
| 2025-05-14 | 1.0000          |
|  |  |
| 2025-05-15 | 1.0000          |
|  |  |
| 2025-05-16 | 1.0000          |
|  |  |
| 2025-05-19 | 1.0000          |
|  |  |
| 2025-05-20 | 1.0000          |
|  |  |
| 2025-05-21 | 1.0000          |
|  |  |
| 2025-05-22 | 1.0000          |
|  |  |
| 2025-05-23 | 1.0000          |
|  |  |
| 2025-05-27 | 1.0000          |
|  |  |
| 2025-05-28 | 1.0000          |
|  |  |
| 2025-05-29 | 1.0000          |
|  |  |
| 2025-05-30 | 1.0000          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2025-05-01 | $36402796.66              | $1489028.86             |
| 2025-05-02 | $6276500.00               | $69246886.41            |
| 2025-05-05 | $130066488.71             | $0.00                   |
| 2025-05-06 | $62000000.00              | $80397295.90            |
| 2025-05-07 | $6499831.01               | $0.00                   |
| 2025-05-08 | $13565061.54              | $0.00                   |
| 2025-05-09 | $0.00                     | $355167.51              |
| 2025-05-12 | $0.00                     | $13449525.54            |
| 2025-05-13 | $0.00                     | $61396846.21            |
| 2025-05-14 | $54005029.64              | $0.00                   |
| 2025-05-15 | $227024.38                | $0.00                   |
| 2025-05-16 | $155009046.91             | $0.00                   |
| 2025-05-19 | $0.00                     | $14461404.73            |
| 2025-05-20 | $58289208.65              | $0.00                   |
| 2025-05-21 | $10000000.00              | $37898448.87            |
| 2025-05-22 | $0.00                     | $23069813.28            |
| 2025-05-23 | $355951.03                | $0.00                   |
| 2025-05-27 | $10000000.00              | $6041014.17             |
| 2025-05-28 | $39678410.34              | $0.00                   |
| 2025-05-29 | $0.00                     | $22751590.42            |
| 2025-05-30 | $63970837.50              | $45000255.05            |

**Total Gross Subscriptions (Month):** $646346186.37

**Total Gross Redemptions (Month):** $375557276.95

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-05-01 | 4.2000%           |
| 2025-05-02 | 4.1900%           |
| 2025-05-05 | 4.1900%           |
| 2025-05-06 | 4.1900%           |
| 2025-05-07 | 4.1800%           |
| 2025-05-08 | 4.1900%           |
| 2025-05-09 | 4.1900%           |
| 2025-05-12 | 4.1900%           |
| 2025-05-13 | 4.1900%           |
| 2025-05-14 | 4.1900%           |
| 2025-05-15 | 4.2000%           |
| 2025-05-16 | 4.2000%           |
| 2025-05-19 | 4.2100%           |
| 2025-05-20 | 4.2100%           |
| 2025-05-21 | 4.2100%           |
| 2025-05-22 | 4.2100%           |
| 2025-05-23 | 4.2100%           |
| 2025-05-27 | 4.2100%           |
| 2025-05-28 | 4.2100%           |
| 2025-05-29 | 4.2100%           |
| 2025-05-30 | 4.2100%           |

**Beneficial/Record Owner Categories**
| Category                  | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Non-financial corporation |  | 14.7300%         | 0.0000%              |
| Non-financial corporation |  | 14.6700%         | 0.0000%              |
| Non-financial corporation |  | 65.8700%         | 0.0000%              |

### Class: CC

- **Minimum Initial Investment:** $200000000.00

- **Net Assets of Class:** $73031064.25

- **Number of Shares Outstanding:** 73028571.8100

- **Expense Reimbursement/Waiver:** 38884.75

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-05-01 | 1.0000          |
|  |  |
| 2025-05-02 | 1.0000          |
|  |  |
| 2025-05-05 | 1.0000          |
|  |  |
| 2025-05-06 | 1.0000          |
|  |  |
| 2025-05-07 | 1.0000          |
|  |  |
| 2025-05-08 | 1.0000          |
|  |  |
| 2025-05-09 | 1.0000          |
|  |  |
| 2025-05-12 | 1.0000          |
|  |  |
| 2025-05-13 | 1.0000          |
|  |  |
| 2025-05-14 | 1.0000          |
|  |  |
| 2025-05-15 | 1.0000          |
|  |  |
| 2025-05-16 | 1.0000          |
|  |  |
| 2025-05-19 | 1.0000          |
|  |  |
| 2025-05-20 | 1.0000          |
|  |  |
| 2025-05-21 | 1.0000          |
|  |  |
| 2025-05-22 | 1.0000          |
|  |  |
| 2025-05-23 | 1.0000          |
|  |  |
| 2025-05-27 | 1.0000          |
|  |  |
| 2025-05-28 | 1.0000          |
|  |  |
| 2025-05-29 | 1.0000          |
|  |  |
| 2025-05-30 | 1.0000          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2025-05-01 | $77239112.35              | $36900000.00            |
| 2025-05-05 | $26300000.00              | $0.00                   |
| 2025-05-06 | $27100000.00              | $26300000.00            |
| 2025-05-07 | $15000000.00              | $27100000.00            |
| 2025-05-08 | $23500000.00              | $0.00                   |
| 2025-05-09 | $59200000.00              | $23500000.00            |
| 2025-05-12 | $30600000.00              | $44700000.00            |
| 2025-05-13 | $26700000.00              | $30600000.00            |
| 2025-05-14 | $37800000.00              | $26700000.00            |
| 2025-05-15 | $37900000.00              | $44800000.00            |
| 2025-05-16 | $38300000.00              | $37900000.00            |
| 2025-05-19 | $28700000.00              | $23300000.00            |
| 2025-05-20 | $20500000.00              | $28700000.00            |
| 2025-05-21 | $31500000.00              | $20500000.00            |
| 2025-05-22 | $10800000.00              | $31500000.00            |
| 2025-05-23 | $10000000.00              | $20800000.00            |
| 2025-05-27 | $16400000.00              | $0.00                   |
| 2025-05-28 | $23600000.00              | $23400000.00            |
| 2025-05-29 | $18200000.00              | $49600000.00            |
| 2025-05-30 | $27800000.00              | $119600000.00           |

**Total Gross Subscriptions (Month):** $587139112.35

**Total Gross Redemptions (Month):** $615900000.00

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-05-01 | 4.2200%           |
| 2025-05-02 | 4.2100%           |
| 2025-05-05 | 4.2100%           |
| 2025-05-06 | 4.2100%           |
| 2025-05-07 | 4.2000%           |
| 2025-05-08 | 4.2100%           |
| 2025-05-09 | 4.2100%           |
| 2025-05-12 | 4.2100%           |
| 2025-05-13 | 4.2100%           |
| 2025-05-14 | 4.2100%           |
| 2025-05-15 | 4.2200%           |
| 2025-05-16 | 4.2200%           |
| 2025-05-19 | 4.2300%           |
| 2025-05-20 | 4.2300%           |
| 2025-05-21 | 4.2300%           |
| 2025-05-22 | 4.2300%           |
| 2025-05-23 | 4.2300%           |
| 2025-05-27 | 4.2300%           |
| 2025-05-28 | 4.2300%           |
| 2025-05-29 | 4.2300%           |
| 2025-05-30 | 4.2200%           |

**Beneficial/Record Owner Categories**
| Category                  | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Non-financial corporation |  | 23.1900%         | 0.0000%              |
| Non-financial corporation |  | 26.7000%         | 0.0000%              |
| Non-financial corporation |  | 16.5100%         | 0.0000%              |
| Non-financial corporation |  | 21.4200%         | 0.0000%              |

## Part C: Schedule of Portfolio Securities

### Security 1: U.S. Treasury Reserves Portfolio

- **C.1 - Title:** U.S. Treasury Reserves Portfolio
- **C.6 - Investment Category:** Investment Company
- **Identifiers:** C.3 - CUSIP: NA, C.5 - Other ID: LMUSTREASURYRES
- **C.18 - Value (incl. sponsor support):** $2136445521.50
- **C.18.a - Value (excl. sponsor support):** $2136445521.50
- **C.19 - Percentage of Net Assets:** 100.0000%
- **C.17 - Yield as of Reporting Date:** 0.0000%
- **C.11 - Maturity Date (WAM):** 2025-06-02
- **C.12 - Maturity Date (WAL):** 2025-06-02
- **C.13 - Final Legal Maturity Date:** 2025-06-02
- **C.10 - Ratings:** Fitch, Inc.: NR; Moody's Investors Service, Inc.: NR; Standard and Poor's Ratings Services: NR
- **Characteristics:** C.9 Eligible Security? Yes, C.14 Has Demand Feature? No, C.15 Has Guarantee? No, C.16 Has Enhancement? No, C.22 Is an Illiquid Security? No, C.20 Is a Daily Liquid Asset? Yes, C.21 Is a Weekly Liquid Asset? Yes, C.23 Categorized at Level 3? No

## N-MFP: Signatures

**Registrant:** Legg Mason Partners Institutional Trust

**Date:** 2025-06-06

**By:** /s/Christopher Berarducci

**Name of Signing Officer:** Christopher Berarducci

**Title of Signing Officer:** Principal Financial Officer