# EDGAR Filing Document

**Accession Number:** 0000889512
**File Stem:** 0001145549-25-058001
**Filing Date:** 2025-9
**Character Count:** 16900
**Document Hash:** e1cf888e5718499bb3496aff502062bd
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001145549-25-058001.hdr.sgml**: 20250908

**ACCESSION NUMBER**: 0001145549-25-058001

**CONFORMED SUBMISSION TYPE**: N-MFP3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20250831

**FILED AS OF DATE**: 20250908

**DATE AS OF CHANGE**: 20250908

**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:** 251299258

**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):** 2025-08-31

**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:** $1842394793.64

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

- **Cash:** $0.00

- **Total Other Assets:** $19413.86

- **Total Liabilities:** $7092356.31

- **Net Assets of Series:** $1835321851.19

- **Number of Shares Outstanding (Series):** 1835333229.5100

- **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 (%)   |
|:---|:---|:---|:---|:---|
| 2025-08-01 | $18305438767.74           | $18305438767.74            | 99.9300%                  | 99.9300%                   |
| 2025-08-04 | $19295188239.95           | $19295188239.95            | 99.9300%                  | 99.9300%                   |
| 2025-08-05 | $17659616851.56           | $17659616851.56            | 99.9200%                  | 99.9200%                   |
| 2025-08-06 | $17909641898.13           | $17909641898.13            | 99.9200%                  | 99.9200%                   |
| 2025-08-07 | $17465099339.53           | $17465099339.53            | 99.9100%                  | 99.9100%                   |
| 2025-08-08 | $17419010029.22           | $17419010029.22            | 99.9000%                  | 99.9000%                   |
| 2025-08-11 | $18191365631.91           | $18191365631.91            | 99.9000%                  | 99.9000%                   |
| 2025-08-12 | $18023771273.34           | $18023771273.34            | 99.8900%                  | 99.8900%                   |
| 2025-08-13 | $17840205577.41           | $17840205577.41            | 99.9000%                  | 99.9000%                   |
| 2025-08-14 | $17503123819.07           | $17503123819.07            | 99.8900%                  | 99.8900%                   |
| 2025-08-15 | $17561732284.20           | $17561732284.20            | 99.8900%                  | 99.8900%                   |
| 2025-08-18 | $17379656438.55           | $17379656438.55            | 99.8800%                  | 99.8800%                   |
| 2025-08-19 | $16829985454.05           | $16829985454.05            | 99.8700%                  | 99.8700%                   |
| 2025-08-20 | $17092146484.57           | $17092146484.57            | 99.8700%                  | 99.8700%                   |
| 2025-08-21 | $17576757816.31           | $17576757816.31            | 99.8700%                  | 99.8700%                   |
| 2025-08-22 | $17414527902.45           | $17414527902.45            | 99.8600%                  | 99.8600%                   |
| 2025-08-25 | $17847360299.85           | $17847360299.85            | 99.8600%                  | 99.8600%                   |
| 2025-08-26 | $17864891299.14           | $17864891299.14            | 99.8600%                  | 99.8600%                   |
| 2025-08-27 | $17664125419.59           | $17664125419.59            | 99.8500%                  | 99.8500%                   |
| 2025-08-28 | $17946150044.36           | $17946150044.36            | 99.8500%                  | 99.8500%                   |
| 2025-08-29 | $17906925387.05           | $17906925387.05            | 99.8500%                  | 99.8500%                   |

### 7-Day Gross Yield
| Date       | 7-Day Gross Yield   |
|:---|:---|
| 2025-08-01 | 4.3400%             |
| 2025-08-04 | 4.3400%             |
| 2025-08-05 | 4.3400%             |
| 2025-08-06 | 4.3400%             |
| 2025-08-07 | 4.3400%             |
| 2025-08-08 | 4.3300%             |
| 2025-08-11 | 4.3300%             |
| 2025-08-12 | 4.3300%             |
| 2025-08-13 | 4.3300%             |
| 2025-08-14 | 4.3300%             |
| 2025-08-15 | 4.3200%             |
| 2025-08-18 | 4.3200%             |
| 2025-08-19 | 4.3200%             |
| 2025-08-20 | 4.3200%             |
| 2025-08-21 | 4.3200%             |
| 2025-08-22 | 4.3200%             |
| 2025-08-25 | 4.3200%             |
| 2025-08-26 | 4.3200%             |
| 2025-08-27 | 4.3200%             |
| 2025-08-28 | 4.3200%             |
| 2025-08-29 | 4.3200%             |

### Daily Net Asset Value per Share (Series)
| Date       | Net Asset Value per Share   |
|:---|:---|
| 2025-08-01 | 1.0000                      |
|  |  |
| 2025-08-04 | 1.0000                      |
|  |  |
| 2025-08-05 | 1.0000                      |
|  |  |
| 2025-08-06 | 1.0000                      |
|  |  |
| 2025-08-07 | 1.0000                      |
|  |  |
| 2025-08-08 | 1.0000                      |
|  |  |
| 2025-08-11 | 1.0000                      |
|  |  |
| 2025-08-12 | 1.0000                      |
|  |  |
| 2025-08-13 | 1.0000                      |
|  |  |
| 2025-08-14 | 1.0000                      |
|  |  |
| 2025-08-15 | 1.0000                      |
|  |  |
| 2025-08-18 | 1.0000                      |
|  |  |
| 2025-08-19 | 1.0000                      |
|  |  |
| 2025-08-20 | 1.0000                      |
|  |  |
| 2025-08-21 | 1.0000                      |
|  |  |
| 2025-08-22 | 1.0000                      |
|  |  |
| 2025-08-25 | 1.0000                      |
|  |  |
| 2025-08-26 | 1.0000                      |
|  |  |
| 2025-08-27 | 1.0000                      |
|  |  |
| 2025-08-28 | 1.0000                      |
|  |  |
| 2025-08-29 | 1.0000                      |
|  |  |

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

### Class: PC

- **Minimum Initial Investment:** $1.00

- **Net Assets of Class:** $1655118778.46

- **Number of Shares Outstanding:** 1655132959.2200

- **Expense Reimbursement/Waiver:** 187363.34

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-08-01 | 1.0000          |
|  |  |
| 2025-08-04 | 1.0000          |
|  |  |
| 2025-08-05 | 1.0000          |
|  |  |
| 2025-08-06 | 1.0000          |
|  |  |
| 2025-08-07 | 1.0000          |
|  |  |
| 2025-08-08 | 1.0000          |
|  |  |
| 2025-08-11 | 1.0000          |
|  |  |
| 2025-08-12 | 1.0000          |
|  |  |
| 2025-08-13 | 1.0000          |
|  |  |
| 2025-08-14 | 1.0000          |
|  |  |
| 2025-08-15 | 1.0000          |
|  |  |
| 2025-08-18 | 1.0000          |
|  |  |
| 2025-08-19 | 1.0000          |
|  |  |
| 2025-08-20 | 1.0000          |
|  |  |
| 2025-08-21 | 1.0000          |
|  |  |
| 2025-08-22 | 1.0000          |
|  |  |
| 2025-08-25 | 1.0000          |
|  |  |
| 2025-08-26 | 1.0000          |
|  |  |
| 2025-08-27 | 1.0000          |
|  |  |
| 2025-08-28 | 1.0000          |
|  |  |
| 2025-08-29 | 1.0000          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2025-08-01 | $1628981.61               | $15908563.70            |
| 2025-08-04 | $63631999.99              | $16990039.74            |
| 2025-08-05 | $53633035.60              | $0.00                   |
| 2025-08-06 | $7549482.18               | $0.00                   |
| 2025-08-07 | $0.00                     | $13686505.69            |
| 2025-08-08 | $0.00                     | $5842859.16             |
| 2025-08-11 | $6506771.97               | $0.00                   |
| 2025-08-12 | $0.00                     | $37721736.24            |
| 2025-08-13 | $2635916.08               | $0.00                   |
| 2025-08-14 | $0.00                     | $21084818.63            |
| 2025-08-15 | $59034513.48              | $0.00                   |
| 2025-08-18 | $0.00                     | $28757611.29            |
| 2025-08-19 | $0.00                     | $34520395.08            |
| 2025-08-20 | $76651085.27              | $25000000.00            |
| 2025-08-21 | $37498202.19              | $0.00                   |
| 2025-08-22 | $0.00                     | $40531154.17            |
| 2025-08-25 | $0.00                     | $45021053.24            |
| 2025-08-26 | $11603078.35              | $0.00                   |
| 2025-08-27 | $100.00                   | $32478104.45            |
| 2025-08-28 | $0.00                     | $43662632.04            |
| 2025-08-29 | $11267829.43              | $0.00                   |

**Total Gross Subscriptions (Month):** $331640996.15

**Total Gross Redemptions (Month):** $361205473.43

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-08-01 | 4.2000%           |
| 2025-08-04 | 4.2000%           |
| 2025-08-05 | 4.2000%           |
| 2025-08-06 | 4.2000%           |
| 2025-08-07 | 4.2000%           |
| 2025-08-08 | 4.1900%           |
| 2025-08-11 | 4.1900%           |
| 2025-08-12 | 4.1900%           |
| 2025-08-13 | 4.1900%           |
| 2025-08-14 | 4.1900%           |
| 2025-08-15 | 4.1800%           |
| 2025-08-18 | 4.1800%           |
| 2025-08-19 | 4.1800%           |
| 2025-08-20 | 4.1800%           |
| 2025-08-21 | 4.1800%           |
| 2025-08-22 | 4.1800%           |
| 2025-08-25 | 4.1800%           |
| 2025-08-26 | 4.1800%           |
| 2025-08-27 | 4.1800%           |
| 2025-08-28 | 4.1800%           |
| 2025-08-29 | 4.1800%           |

**Beneficial/Record Owner Categories**
| Category                  | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Non-financial corporation |  | 6.0500%          | 0.0000%              |
| Non-financial corporation |  | 74.7100%         | 0.0000%              |
| Non-financial corporation |  | 15.3600%         | 0.0000%              |

### Class: CC

- **Minimum Initial Investment:** $200000000.00

- **Net Assets of Class:** $180203072.73

- **Number of Shares Outstanding:** 180200270.2900

- **Expense Reimbursement/Waiver:** 37787.27

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-08-01 | 1.0000          |
|  |  |
| 2025-08-04 | 1.0000          |
|  |  |
| 2025-08-05 | 1.0000          |
|  |  |
| 2025-08-06 | 1.0000          |
|  |  |
| 2025-08-07 | 1.0000          |
|  |  |
| 2025-08-08 | 1.0000          |
|  |  |
| 2025-08-11 | 1.0000          |
|  |  |
| 2025-08-12 | 1.0000          |
|  |  |
| 2025-08-13 | 1.0000          |
|  |  |
| 2025-08-14 | 1.0000          |
|  |  |
| 2025-08-15 | 1.0000          |
|  |  |
| 2025-08-18 | 1.0000          |
|  |  |
| 2025-08-19 | 1.0000          |
|  |  |
| 2025-08-20 | 1.0000          |
|  |  |
| 2025-08-21 | 1.0000          |
|  |  |
| 2025-08-22 | 1.0000          |
|  |  |
| 2025-08-25 | 1.0000          |
|  |  |
| 2025-08-26 | 1.0000          |
|  |  |
| 2025-08-27 | 1.0000          |
|  |  |
| 2025-08-28 | 1.0000          |
|  |  |
| 2025-08-29 | 1.0000          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2025-08-01 | $111152088.12             | $0.00                   |
| 2025-08-14 | $6000000.00               | $0.00                   |
| 2025-08-18 | $12000000.00              | $0.00                   |
| 2025-08-20 | $27000000.00              | $0.00                   |
| 2025-08-25 | $0.00                     | $2500000.00             |
| 2025-08-28 | $0.00                     | $10103000.00            |

**Total Gross Subscriptions (Month):** $156152088.12

**Total Gross Redemptions (Month):** $12603000.00

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-08-01 | 4.2200%           |
| 2025-08-04 | 4.2200%           |
| 2025-08-05 | 4.2200%           |
| 2025-08-06 | 4.2200%           |
| 2025-08-07 | 4.2200%           |
| 2025-08-08 | 4.2100%           |
| 2025-08-11 | 4.2100%           |
| 2025-08-12 | 4.2100%           |
| 2025-08-13 | 4.2100%           |
| 2025-08-14 | 4.2100%           |
| 2025-08-15 | 4.2000%           |
| 2025-08-18 | 4.2000%           |
| 2025-08-19 | 4.2000%           |
| 2025-08-20 | 4.2000%           |
| 2025-08-21 | 4.2000%           |
| 2025-08-22 | 4.2000%           |
| 2025-08-25 | 4.2000%           |
| 2025-08-26 | 4.2000%           |
| 2025-08-27 | 4.2000%           |
| 2025-08-28 | 4.2000%           |
| 2025-08-29 | 4.2000%           |

**Beneficial/Record Owner Categories**
| Category                  | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Non-financial corporation |  | 9.5000%          | 0.0000%              |
| Non-financial corporation |  | 11.2000%         | 0.0000%              |
| Non-financial corporation |  | 9.1300%          | 0.0000%              |
| Non-financial corporation |  | 66.0500%         | 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):** $1842394793.64
- **C.18.a - Value (excl. sponsor support):** $1842394793.64
- **C.19 - Percentage of Net Assets:** 100.0000%
- **C.17 - Yield as of Reporting Date:** 0.0000%
- **C.11 - Maturity Date (WAM):** 2025-09-02
- **C.12 - Maturity Date (WAL):** 2025-09-02
- **C.13 - Final Legal Maturity Date:** 2025-09-02
- **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:** 2025-09-08

**By:** /s/Christopher Berarducci

**Name of Signing Officer:** Christopher Berarducci

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