# EDGAR Filing Document

**Accession Number:** 0000889512
**File Stem:** 0001145549-25-038826
**Filing Date:** 2025-6
**Character Count:** 20639
**Document Hash:** d948b66f0b6acee9d28cf14d829e8ddd
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001145549-25-038826.hdr.sgml**: 20250606

**ACCESSION NUMBER**: 0001145549-25-038826

**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:** 251029707

**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 Institutional U.S. Treasury Obligations Money Market Fund (Series ID: S000041891)

| Class ID   | Class Name            | Ticker Symbol   |
|:---|:---|:---|
| C000130074 | Institutional Shares  | LUIXX           |
| C000130075 | Administrative Shares | LAOXX           |
| C000130076 | Investor Shares       | LAIXX           |

# 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 Institutional U.S. Treasury Obligations Money Market Fund

**LEI of Series:** 549300P231U63OH0ZT41

**EDGAR Series Identifier:** S000041891

**Total number of share classes in the series:** 3

**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:** $890883880.76

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

- **Cash:** $0.00

- **Total Other Assets:** $18866.20

- **Total Liabilities:** $2763115.40

- **Net Assets of Series:** $888139631.56

- **Number of Shares Outstanding (Series):** 888125196.4300

- **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 | $584175780.59             | $584175780.59              | 99.9200%                  | 99.9200%                   |
| 2025-05-02 | $574079983.28             | $574079983.28              | 99.9000%                  | 99.9000%                   |
| 2025-05-05 | $578688622.62             | $578688622.62              | 99.9100%                  | 99.9100%                   |
| 2025-05-06 | $566720863.42             | $566720863.42              | 99.9100%                  | 99.9100%                   |
| 2025-05-07 | $576382213.08             | $576382213.08              | 99.9100%                  | 99.9100%                   |
| 2025-05-08 | $573550907.14             | $573550907.14              | 99.9000%                  | 99.9000%                   |
| 2025-05-09 | $572555611.08             | $572555611.08              | 99.8800%                  | 99.8800%                   |
| 2025-05-12 | $571365323.13             | $571365323.13              | 99.8900%                  | 99.8900%                   |
| 2025-05-13 | $576688568.12             | $576688568.12              | 99.8900%                  | 99.8900%                   |
| 2025-05-14 | $575988549.90             | $575988549.90              | 99.8800%                  | 99.8800%                   |
| 2025-05-15 | $560154363.19             | $560154363.19              | 99.8800%                  | 99.8800%                   |
| 2025-05-16 | $860016609.66             | $860016609.66              | 99.8900%                  | 99.8900%                   |
| 2025-05-19 | $868873284.71             | $868873284.71              | 99.9100%                  | 99.9100%                   |
| 2025-05-20 | $889990561.13             | $889990561.13              | 99.9100%                  | 99.9100%                   |
| 2025-05-21 | $892450265.70             | $892450265.70              | 99.9100%                  | 99.9100%                   |
| 2025-05-22 | $885139767.55             | $885139767.55              | 99.9100%                  | 99.9100%                   |
| 2025-05-23 | $864259740.70             | $864259740.70              | 99.8700%                  | 99.8700%                   |
| 2025-05-27 | $837766805.43             | $837766805.43              | 99.8900%                  | 99.8900%                   |
| 2025-05-28 | $802538689.67             | $802538689.67              | 99.8800%                  | 99.8800%                   |
| 2025-05-29 | $839783952.51             | $839783952.51              | 99.8900%                  | 99.8900%                   |
| 2025-05-30 | $894883160.63             | $894883160.63              | 99.8700%                  | 99.8700%                   |

### 7-Day Gross Yield
| Date       | 7-Day Gross Yield   |
|:---|:---|
| 2025-05-01 | 4.3900%             |
| 2025-05-02 | 4.3900%             |
| 2025-05-05 | 4.3900%             |
| 2025-05-06 | 4.3800%             |
| 2025-05-07 | 4.3700%             |
| 2025-05-08 | 4.3700%             |
| 2025-05-09 | 4.3600%             |
| 2025-05-12 | 4.3600%             |
| 2025-05-13 | 4.3600%             |
| 2025-05-14 | 4.3600%             |
| 2025-05-15 | 4.3600%             |
| 2025-05-16 | 4.3700%             |
| 2025-05-19 | 4.3700%             |
| 2025-05-20 | 4.3600%             |
| 2025-05-21 | 4.3600%             |
| 2025-05-22 | 4.3500%             |
| 2025-05-23 | 4.3500%             |
| 2025-05-27 | 4.3500%             |
| 2025-05-28 | 4.3700%             |
| 2025-05-29 | 4.3700%             |
| 2025-05-30 | 4.3900%             |

### 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: 0L

- **Minimum Initial Investment:** $1000000.00

- **Net Assets of Class:** $439105887.58

- **Number of Shares Outstanding:** 439100954.2300

- **Expense Reimbursement/Waiver:** 26828.08

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-05-01 | 1.0001          |
|  |  |
| 2025-05-02 | 1.0001          |
|  |  |
| 2025-05-05 | 1.0001          |
|  |  |
| 2025-05-06 | 1.0001          |
|  |  |
| 2025-05-07 | 1.0001          |
|  |  |
| 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 | $590480.35                | $49561.85               |
| 2025-05-02 | $61788.61                 | $233195.82              |
| 2025-05-05 | $195166.46                | $383529.48              |
| 2025-05-06 | $19444.83                 | $0.00                   |
| 2025-05-07 | $237300.18                | $131128.16              |
| 2025-05-08 | $12150000.00              | $119999.91              |
| 2025-05-09 | $1196219.03               | $41677.68               |
| 2025-05-12 | $403360.71                | $913950.85              |
| 2025-05-13 | $172897.69                | $3677.94                |
| 2025-05-14 | $6381.52                  | $12004.03               |
| 2025-05-15 | $249019.93                | $35111.57               |
| 2025-05-16 | $300120188.48             | $59434.57               |
| 2025-05-19 | $9572549.16               | $105643.41              |
| 2025-05-20 | $107419.80                | $1308043.05             |
| 2025-05-21 | $250842.80                | $159999.97              |
| 2025-05-22 | $11350.00                 | $6485570.90             |
| 2025-05-23 | $8213.12                  | $11363866.20            |
| 2025-05-27 | $260328.27                | $8746.72                |
| 2025-05-28 | $133835.52                | $28511324.77            |
| 2025-05-29 | $40295151.76              | $6240168.64             |
| 2025-05-30 | $60018296.95              | $18605117.47            |

**Total Gross Subscriptions (Month):** $426060235.17

**Total Gross Redemptions (Month):** $74771752.99

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-05-01 | 4.2100%           |
| 2025-05-02 | 4.2100%           |
| 2025-05-05 | 4.2100%           |
| 2025-05-06 | 4.2000%           |
| 2025-05-07 | 4.1900%           |
| 2025-05-08 | 4.1900%           |
| 2025-05-09 | 4.1800%           |
| 2025-05-12 | 4.1800%           |
| 2025-05-13 | 4.1800%           |
| 2025-05-14 | 4.1800%           |
| 2025-05-15 | 4.1800%           |
| 2025-05-16 | 4.1900%           |
| 2025-05-19 | 4.1900%           |
| 2025-05-20 | 4.1800%           |
| 2025-05-21 | 4.1800%           |
| 2025-05-22 | 4.1700%           |
| 2025-05-23 | 4.1700%           |
| 2025-05-27 | 4.1700%           |
| 2025-05-28 | 4.1900%           |
| 2025-05-29 | 4.1900%           |
| 2025-05-30 | 4.2100%           |

**Beneficial/Record Owner Categories**
| Category                  | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Broker-dealer             |  | 6.8200%          | 0.0000%              |
| Broker-dealer             |  | 18.0100%         | 0.0000%              |
| Non-financial corporation |  | 6.8200%          | 0.0000%              |
| Non-financial corporation |  | 8.3400%          | 0.0000%              |
| Non-financial corporation |  | 57.1400%         | 0.0000%              |

### Class: AD

- **Minimum Initial Investment:** $1000000.00

- **Net Assets of Class:** $448401050.84

- **Number of Shares Outstanding:** 448391656.6200

- **Expense Reimbursement/Waiver:** 46860.56

**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 | $3284530.87               | $0.00                   |
| 2025-05-02 | $0.00                     | $10007462.61            |
| 2025-05-05 | $0.00                     | $272620.17              |
| 2025-05-06 | $0.00                     | $2176036.95             |
| 2025-05-07 | $9505852.17               | $0.00                   |
| 2025-05-08 | $0.00                     | $9966247.14             |
| 2025-05-09 | $0.00                     | $2231074.59             |
| 2025-05-12 | $0.00                     | $3025446.47             |
| 2025-05-13 | $2393085.11               | $0.00                   |
| 2025-05-14 | $0.00                     | $746021.03              |
| 2025-05-15 | $0.00                     | $11154497.81            |
| 2025-05-16 | $0.00                     | $276375.34              |
| 2025-05-19 | $0.00                     | $834559.27              |
| 2025-05-20 | $0.00                     | $2644997.37             |
| 2025-05-21 | $2287253.05               | $0.00                   |
| 2025-05-22 | $0.00                     | $877118.25              |
| 2025-05-23 | $0.00                     | $9659893.65             |
| 2025-05-27 | $0.00                     | $2173831.78             |
| 2025-05-28 | $0.00                     | $6934126.78             |
| 2025-05-29 | $0.00                     | $1857453.33             |
| 2025-05-30 | $13555751.14              | $0.00                   |

**Total Gross Subscriptions (Month):** $31026472.34

**Total Gross Redemptions (Month):** $64837762.54

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-05-01 | 4.0100%           |
| 2025-05-02 | 4.0100%           |
| 2025-05-05 | 4.0000%           |
| 2025-05-06 | 4.0000%           |
| 2025-05-07 | 3.9900%           |
| 2025-05-08 | 3.9800%           |
| 2025-05-09 | 3.9700%           |
| 2025-05-12 | 3.9700%           |
| 2025-05-13 | 3.9700%           |
| 2025-05-14 | 3.9700%           |
| 2025-05-15 | 3.9800%           |
| 2025-05-16 | 3.9800%           |
| 2025-05-19 | 3.9800%           |
| 2025-05-20 | 3.9800%           |
| 2025-05-21 | 3.9700%           |
| 2025-05-22 | 3.9600%           |
| 2025-05-23 | 3.9600%           |
| 2025-05-27 | 3.9700%           |
| 2025-05-28 | 3.9800%           |
| 2025-05-29 | 3.9900%           |
| 2025-05-30 | 4.0000%           |

**Beneficial/Record Owner Categories**
| Category                                            | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Depository institution or other banking institution |  | 100.0000%        | 0.0000%              |

### Class: 0I

- **Minimum Initial Investment:** $1000000.00

- **Net Assets of Class:** $632693.14

- **Number of Shares Outstanding:** 632585.5800

- **Expense Reimbursement/Waiver:** 2384.74

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-05-01 | 1.0002          |
|  |  |
| 2025-05-02 | 1.0002          |
|  |  |
| 2025-05-05 | 1.0002          |
|  |  |
| 2025-05-06 | 1.0002          |
|  |  |
| 2025-05-07 | 1.0002          |
|  |  |
| 2025-05-08 | 1.0002          |
|  |  |
| 2025-05-09 | 1.0002          |
|  |  |
| 2025-05-12 | 1.0002          |
|  |  |
| 2025-05-13 | 1.0002          |
|  |  |
| 2025-05-14 | 1.0002          |
|  |  |
| 2025-05-15 | 1.0002          |
|  |  |
| 2025-05-16 | 1.0002          |
|  |  |
| 2025-05-19 | 1.0002          |
|  |  |
| 2025-05-20 | 1.0002          |
|  |  |
| 2025-05-21 | 1.0002          |
|  |  |
| 2025-05-22 | 1.0002          |
|  |  |
| 2025-05-23 | 1.0002          |
|  |  |
| 2025-05-27 | 1.0002          |
|  |  |
| 2025-05-28 | 1.0002          |
|  |  |
| 2025-05-29 | 1.0002          |
|  |  |
| 2025-05-30 | 1.0002          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2025-05-01 | $1854.80                  | $383.94                 |

**Total Gross Subscriptions (Month):** $1854.80

**Total Gross Redemptions (Month):** $383.94

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-05-01 | 4.1600%           |
| 2025-05-02 | 4.1600%           |
| 2025-05-05 | 4.1600%           |
| 2025-05-06 | 4.1500%           |
| 2025-05-07 | 4.1400%           |
| 2025-05-08 | 4.1400%           |
| 2025-05-09 | 4.1300%           |
| 2025-05-12 | 4.1300%           |
| 2025-05-13 | 4.1300%           |
| 2025-05-14 | 4.1300%           |
| 2025-05-15 | 4.1300%           |
| 2025-05-16 | 4.1400%           |
| 2025-05-19 | 4.1400%           |
| 2025-05-20 | 4.1300%           |
| 2025-05-21 | 4.1300%           |
| 2025-05-22 | 4.1200%           |
| 2025-05-23 | 4.1200%           |
| 2025-05-27 | 4.1200%           |
| 2025-05-28 | 4.1400%           |
| 2025-05-29 | 4.1400%           |
| 2025-05-30 | 4.1600%           |

**Beneficial/Record Owner Categories**
| Category                                            | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Broker-dealer                                       |  | 84.2200%         | 0.0000%              |
| Depository institution or other banking institution |  | 15.7600%         | 0.0000%              |

## Part C: Schedule of Portfolio Securities

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

- **C.1 - Title:** U.S. Treasury Obligations Portfolio
- **C.6 - Investment Category:** Investment Company
- **Identifiers:** C.3 - CUSIP: NA, C.5 - Other ID: LMUSTREASURYOBLI
- **C.18 - Value (incl. sponsor support):** $890883880.76
- **C.18.a - Value (excl. sponsor support):** $890883880.76
- **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