# EDGAR Filing Document

**Accession Number:** 0000889512
**File Stem:** 0001145549-25-046157
**Filing Date:** 2025-7
**Character Count:** 17218
**Document Hash:** b40210e2a6858e96813d2d3e7fc84526
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001145549-25-046157.hdr.sgml**: 20250708

**ACCESSION NUMBER**: 0001145549-25-046157

**CONFORMED SUBMISSION TYPE**: N-MFP3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250630

**FILED AS OF DATE**: 20250708

**DATE AS OF CHANGE**: 20250708

**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:** 251110814

**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 Reserves (Series ID: S000008910)

| Class ID   | Class Name           | Ticker Symbol   |
|:---|:---|:---|
| C000024239 | Institutional Shares | CIIXX           |
| C000089733 | Investor Shares      | LTRXX           |

# 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):** 2025-06-30

**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 Reserves

**LEI of Series:** 549300QC7GUBE6E4RH57

**EDGAR Series Identifier:** S000008910

**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:** $7406437511.85

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

- **Cash:** $0.00

- **Total Other Assets:** $91402.35

- **Total Liabilities:** $26074051.05

- **Net Assets of Series:** $7380454863.15

- **Number of Shares Outstanding (Series):** 7380933538.2500

- **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 (%)   |
|:---|:---|:---|:---|:---|
| 2025-06-02 | $18854950505.03           | $18854950505.03            | 99.8600%                  | 99.8600%                   |
| 2025-06-03 | $18621798711.95           | $18621798711.95            | 99.8500%                  | 99.8500%                   |
| 2025-06-04 | $18642349669.81           | $18642349669.81            | 99.8500%                  | 99.8500%                   |
| 2025-06-05 | $18108654616.09           | $18108654616.09            | 99.8400%                  | 99.8400%                   |
| 2025-06-06 | $18141673996.61           | $18141673996.61            | 99.8300%                  | 99.8300%                   |
| 2025-06-09 | $18263770896.69           | $18263770896.69            | 99.8300%                  | 99.8300%                   |
| 2025-06-10 | $17899219757.31           | $17899219757.31            | 99.8200%                  | 99.8200%                   |
| 2025-06-11 | $17880411815.20           | $17880411815.20            | 99.8100%                  | 99.8100%                   |
| 2025-06-12 | $17992090351.34           | $17992090351.34            | 99.8100%                  | 99.8100%                   |
| 2025-06-13 | $17857409902.75           | $17857409902.75            | 99.8000%                  | 99.8000%                   |
| 2025-06-16 | $17707502632.09           | $17707502632.09            | 99.7900%                  | 99.7900%                   |
| 2025-06-17 | $17537082572.67           | $17537082572.67            | 99.7900%                  | 99.7900%                   |
| 2025-06-18 | $18431856178.79           | $18431856178.79            | 99.7900%                  | 99.7900%                   |
| 2025-06-20 | $18603581754.97           | $18603581754.97            | 99.7800%                  | 99.7800%                   |
| 2025-06-23 | $18074864333.62           | $18074864333.62            | 99.7700%                  | 99.7700%                   |
| 2025-06-24 | $18040637267.77           | $18040637267.77            | 99.7700%                  | 99.7700%                   |
| 2025-06-25 | $18503043704.96           | $18503043704.96            | 99.7700%                  | 99.7700%                   |
| 2025-06-26 | $18538472748.39           | $18538472748.39            | 99.7500%                  | 99.7500%                   |
| 2025-06-27 | $17905176604.49           | $17905176604.49            | 99.7300%                  | 99.7300%                   |
| 2025-06-30 | $18388051261.77           | $18388051261.77            | 99.7900%                  | 99.7900%                   |

### 7-Day Gross Yield
| Date       | 7-Day Gross Yield   |
|:---|:---|
| 2025-06-02 | 4.3400%             |
| 2025-06-03 | 4.3400%             |
| 2025-06-04 | 4.3400%             |
| 2025-06-05 | 4.3300%             |
| 2025-06-06 | 4.3300%             |
| 2025-06-09 | 4.3300%             |
| 2025-06-10 | 4.3300%             |
| 2025-06-11 | 4.3300%             |
| 2025-06-12 | 4.3300%             |
| 2025-06-13 | 4.3300%             |
| 2025-06-16 | 4.3300%             |
| 2025-06-17 | 4.3300%             |
| 2025-06-18 | 4.3300%             |
| 2025-06-20 | 4.3300%             |
| 2025-06-23 | 4.3300%             |
| 2025-06-24 | 4.3300%             |
| 2025-06-25 | 4.3300%             |
| 2025-06-26 | 4.3300%             |
| 2025-06-27 | 4.3300%             |
| 2025-06-30 | 4.3300%             |

### Daily Net Asset Value per Share (Series)
| Date       | Net Asset Value per Share   |
|:---|:---|
| 2025-06-02 | 0.9999                      |
|  |  |
| 2025-06-03 | 0.9999                      |
|  |  |
| 2025-06-04 | 0.9999                      |
|  |  |
| 2025-06-05 | 0.9999                      |
|  |  |
| 2025-06-06 | 0.9999                      |
|  |  |
| 2025-06-09 | 0.9999                      |
|  |  |
| 2025-06-10 | 0.9999                      |
|  |  |
| 2025-06-11 | 0.9999                      |
|  |  |
| 2025-06-12 | 0.9999                      |
|  |  |
| 2025-06-13 | 0.9999                      |
|  |  |
| 2025-06-16 | 0.9999                      |
|  |  |
| 2025-06-17 | 0.9999                      |
|  |  |
| 2025-06-18 | 0.9999                      |
|  |  |
| 2025-06-20 | 0.9999                      |
|  |  |
| 2025-06-23 | 0.9999                      |
|  |  |
| 2025-06-24 | 0.9999                      |
|  |  |
| 2025-06-25 | 0.9999                      |
|  |  |
| 2025-06-26 | 0.9999                      |
|  |  |
| 2025-06-27 | 0.9999                      |
|  |  |
| 2025-06-30 | 0.9999                      |
|  |  |

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

### Class: 0L

- **Minimum Initial Investment:** $1000000.00

- **Net Assets of Class:** $4692973310.23

- **Number of Shares Outstanding:** 4693269929.7500

- **Expense Reimbursement/Waiver:** 593061.15

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-06-02 | 0.9999          |
|  |  |
| 2025-06-03 | 0.9999          |
|  |  |
| 2025-06-04 | 0.9999          |
|  |  |
| 2025-06-05 | 0.9999          |
|  |  |
| 2025-06-06 | 0.9999          |
|  |  |
| 2025-06-09 | 0.9999          |
|  |  |
| 2025-06-10 | 0.9999          |
|  |  |
| 2025-06-11 | 0.9999          |
|  |  |
| 2025-06-12 | 0.9999          |
|  |  |
| 2025-06-13 | 0.9999          |
|  |  |
| 2025-06-16 | 0.9999          |
|  |  |
| 2025-06-17 | 0.9999          |
|  |  |
| 2025-06-18 | 0.9999          |
|  |  |
| 2025-06-20 | 0.9999          |
|  |  |
| 2025-06-23 | 0.9999          |
|  |  |
| 2025-06-24 | 0.9999          |
|  |  |
| 2025-06-25 | 0.9999          |
|  |  |
| 2025-06-26 | 0.9999          |
|  |  |
| 2025-06-27 | 0.9999          |
|  |  |
| 2025-06-30 | 0.9999          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2025-06-02 | $24318707.88              | $55366040.99            |
| 2025-06-03 | $6722131.80               | $53266785.06            |
| 2025-06-04 | $57553645.33              | $71410806.11            |
| 2025-06-05 | $24316330.36              | $203607071.48           |
| 2025-06-06 | $11550568.00              | $59752878.75            |
| 2025-06-09 | $12411930.88              | $162770955.59           |
| 2025-06-10 | $39973992.03              | $16378725.14            |
| 2025-06-11 | $113717409.24             | $92272667.13            |
| 2025-06-12 | $53563636.23              | $41608617.60            |
| 2025-06-13 | $134449463.33             | $165138714.81           |
| 2025-06-16 | $65167503.41              | $15052947.77            |
| 2025-06-17 | $30557151.76              | $95236798.30            |
| 2025-06-18 | $51812400.24              | $44681696.45            |
| 2025-06-20 | $91666116.21              | $48134793.76            |
| 2025-06-23 | $137189479.98             | $55970196.93            |
| 2025-06-24 | $63518762.92              | $158548014.27           |
| 2025-06-25 | $14789351.69              | $92594736.21            |
| 2025-06-26 | $131800542.55             | $63184105.72            |
| 2025-06-27 | $39717689.20              | $354552242.83           |
| 2025-06-30 | $168805452.09             | $35073091.47            |

**Total Gross Subscriptions (Month):** $1273602265.13

**Total Gross Redemptions (Month):** $1884601886.37

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-06-02 | 4.1600%           |
| 2025-06-03 | 4.1600%           |
| 2025-06-04 | 4.1600%           |
| 2025-06-05 | 4.1500%           |
| 2025-06-06 | 4.1500%           |
| 2025-06-09 | 4.1500%           |
| 2025-06-10 | 4.1500%           |
| 2025-06-11 | 4.1500%           |
| 2025-06-12 | 4.1500%           |
| 2025-06-13 | 4.1500%           |
| 2025-06-16 | 4.1500%           |
| 2025-06-17 | 4.1500%           |
| 2025-06-18 | 4.1500%           |
| 2025-06-20 | 4.1500%           |
| 2025-06-23 | 4.1500%           |
| 2025-06-24 | 4.1500%           |
| 2025-06-25 | 4.1500%           |
| 2025-06-26 | 4.1500%           |
| 2025-06-27 | 4.1500%           |
| 2025-06-30 | 4.1400%           |

**Beneficial/Record Owner Categories**
| Category      | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Broker-dealer |  | 5.0200%          | 0.0000%              |
| Broker-dealer |  | 30.6700%         | 0.0000%              |
| Broker-dealer |  | 35.9800%         | 0.0000%              |

### Class: 0I

- **Minimum Initial Investment:** $1000000.00

- **Net Assets of Class:** $2687481552.92

- **Number of Shares Outstanding:** 2687663608.5000

- **Expense Reimbursement/Waiver:** 403628.93

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-06-02 | 0.9999          |
|  |  |
| 2025-06-03 | 0.9999          |
|  |  |
| 2025-06-04 | 0.9999          |
|  |  |
| 2025-06-05 | 0.9999          |
|  |  |
| 2025-06-06 | 0.9999          |
|  |  |
| 2025-06-09 | 0.9999          |
|  |  |
| 2025-06-10 | 0.9999          |
|  |  |
| 2025-06-11 | 0.9999          |
|  |  |
| 2025-06-12 | 0.9999          |
|  |  |
| 2025-06-13 | 0.9999          |
|  |  |
| 2025-06-16 | 0.9999          |
|  |  |
| 2025-06-17 | 0.9999          |
|  |  |
| 2025-06-18 | 0.9999          |
|  |  |
| 2025-06-20 | 0.9999          |
|  |  |
| 2025-06-23 | 0.9999          |
|  |  |
| 2025-06-24 | 0.9999          |
|  |  |
| 2025-06-25 | 0.9999          |
|  |  |
| 2025-06-26 | 0.9999          |
|  |  |
| 2025-06-27 | 0.9999          |
|  |  |
| 2025-06-30 | 0.9999          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2025-06-02 | $8739697.70               | $78162480.80            |
| 2025-06-03 | $36304390.75              | $0.00                   |
| 2025-06-04 | $0.00                     | $269038591.77           |
| 2025-06-05 | $0.00                     | $80351077.60            |
| 2025-06-06 | $44489586.66              | $0.00                   |
| 2025-06-09 | $0.00                     | $56374970.56            |
| 2025-06-10 | $44838832.08              | $0.00                   |
| 2025-06-11 | $0.00                     | $258220564.31           |
| 2025-06-12 | $24687578.75              | $0.00                   |
| 2025-06-13 | $795198.14                | $18252.13               |
| 2025-06-16 | $85576024.60              | $0.00                   |
| 2025-06-17 | $30500266.56              | $0.00                   |
| 2025-06-18 | $10028801.13              | $0.00                   |
| 2025-06-20 | $10847844.04              | $0.00                   |
| 2025-06-23 | $14365264.09              | $0.00                   |
| 2025-06-24 | $0.00                     | $9211419.47             |
| 2025-06-25 | $35596444.00              | $0.00                   |
| 2025-06-26 | $230049075.34             | $200485.82              |
| 2025-06-27 | $97851975.71              | $0.00                   |
| 2025-06-30 | $0.00                     | $65851083.16            |

**Total Gross Subscriptions (Month):** $674670979.55

**Total Gross Redemptions (Month):** $817428925.62

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-06-02 | 4.1100%           |
| 2025-06-03 | 4.1100%           |
| 2025-06-04 | 4.1100%           |
| 2025-06-05 | 4.1000%           |
| 2025-06-06 | 4.1000%           |
| 2025-06-09 | 4.1000%           |
| 2025-06-10 | 4.1000%           |
| 2025-06-11 | 4.1000%           |
| 2025-06-12 | 4.1000%           |
| 2025-06-13 | 4.1000%           |
| 2025-06-16 | 4.1000%           |
| 2025-06-17 | 4.1000%           |
| 2025-06-18 | 4.1000%           |
| 2025-06-20 | 4.1000%           |
| 2025-06-23 | 4.1000%           |
| 2025-06-24 | 4.1000%           |
| 2025-06-25 | 4.1000%           |
| 2025-06-26 | 4.1000%           |
| 2025-06-27 | 4.1000%           |
| 2025-06-30 | 4.1000%           |

**Beneficial/Record Owner Categories**
| Category                                            | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Depository institution or other banking institution |  | 99.6100%         | 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):** $7406437511.85
- **C.18.a - Value (excl. sponsor support):** $7406437511.85
- **C.19 - Percentage of Net Assets:** 100.0000%
- **C.17 - Yield as of Reporting Date:** 0.0000%
- **C.11 - Maturity Date (WAM):** 2025-07-01
- **C.12 - Maturity Date (WAL):** 2025-07-01
- **C.13 - Final Legal Maturity Date:** 2025-07-01
- **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:** 2025-07-08

**By:** /s/Christopher Berarducci

**Name of Signing Officer:** Christopher Berarducci

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