# EDGAR Filing Document

**Accession Number:** 0000889512
**File Stem:** 0001193125-25-271985
**Filing Date:** 2025-11
**Character Count:** 18237
**Document Hash:** 3a29904059f89c75502aa127da59acaa
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-271985.hdr.sgml**: 20251107

**ACCESSION NUMBER**: 0001193125-25-271985

**CONFORMED SUBMISSION TYPE**: N-MFP3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251031

**FILED AS OF DATE**: 20251107

**DATE AS OF CHANGE**: 20251107

**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:** 251462007

**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):** 2025-10-31

**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 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:** $7402342010.46

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

- **Cash:** $0.00

- **Total Other Assets:** $122127.91

- **Total Liabilities:** $28734092.02

- **Net Assets of Series:** $7373730046.35

- **Number of Shares Outstanding (Series):** 7374217840.7200

- **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 (%)   |
|:---|:---|:---|:---|:---|
| 2025-10-01 | $19846711377.59           | $19846711377.59            | 99.8200%                  | 99.8200%                   |
| 2025-10-02 | $19844562213.34           | $19844562213.34            | 99.8200%                  | 99.8200%                   |
| 2025-10-03 | $19449700693.23           | $19449700693.23            | 99.8100%                  | 99.8100%                   |
| 2025-10-06 | $19602272647.91           | $19602272647.91            | 99.8000%                  | 99.8000%                   |
| 2025-10-07 | $18397635423.05           | $18397635423.05            | 99.7900%                  | 99.7900%                   |
| 2025-10-08 | $18106769955.45           | $18106769955.45            | 99.7900%                  | 99.7900%                   |
| 2025-10-09 | $17615166298.01           | $17615166298.01            | 99.8000%                  | 99.8000%                   |
| 2025-10-10 | $17672436450.15           | $17672436450.15            | 99.7800%                  | 99.7800%                   |
| 2025-10-14 | $17778410480.06           | $17778410480.06            | 99.7800%                  | 99.7800%                   |
| 2025-10-15 | $18116114805.09           | $18116114805.09            | 99.7800%                  | 99.7800%                   |
| 2025-10-16 | $18106492504.55           | $18106492504.55            | 99.7800%                  | 99.7800%                   |
| 2025-10-17 | $18168941327.67           | $18168941327.67            | 99.7700%                  | 99.7700%                   |
| 2025-10-20 | $18686488539.66           | $18686488539.66            | 99.7800%                  | 99.7800%                   |
| 2025-10-21 | $17702285331.42           | $17702285331.42            | 99.7600%                  | 99.7600%                   |
| 2025-10-22 | $17626856081.68           | $17626856081.68            | 99.7500%                  | 99.7500%                   |
| 2025-10-23 | $17474094896.31           | $17474094896.31            | 99.7400%                  | 99.7400%                   |
| 2025-10-24 | $18135748415.75           | $18135748415.75            | 99.7400%                  | 99.7400%                   |
| 2025-10-27 | $18728446991.29           | $18728446991.29            | 99.7500%                  | 99.7500%                   |
| 2025-10-28 | $17768388455.12           | $17768388455.12            | 99.7300%                  | 99.7300%                   |
| 2025-10-29 | $17955181731.82           | $17955181731.82            | 99.7300%                  | 99.7300%                   |
| 2025-10-30 | $17654162202.95           | $17654162202.95            | 99.7300%                  | 99.7300%                   |
| 2025-10-31 | $17494699279.75           | $17494699279.75            | 99.9200%                  | 99.9200%                   |

### 7-Day Gross Yield
| Date       | 7-Day Gross Yield   |
|:---|:---|
| 2025-10-01 | 4.1600%             |
| 2025-10-02 | 4.1500%             |
| 2025-10-03 | 4.1300%             |
| 2025-10-06 | 4.1300%             |
| 2025-10-07 | 4.1200%             |
| 2025-10-08 | 4.1200%             |
| 2025-10-09 | 4.1200%             |
| 2025-10-10 | 4.1100%             |
| 2025-10-14 | 4.1100%             |
| 2025-10-15 | 4.1100%             |
| 2025-10-16 | 4.1000%             |
| 2025-10-17 | 4.1000%             |
| 2025-10-20 | 4.0900%             |
| 2025-10-21 | 4.0900%             |
| 2025-10-22 | 4.0900%             |
| 2025-10-23 | 4.0800%             |
| 2025-10-24 | 4.0700%             |
| 2025-10-27 | 4.0700%             |
| 2025-10-28 | 4.0600%             |
| 2025-10-29 | 4.0600%             |
| 2025-10-30 | 4.0500%             |
| 2025-10-31 | 4.0400%             |

### Daily Net Asset Value per Share (Series)
| Date       | Net Asset Value per Share   |
|:---|:---|
| 2025-10-01 | 0.9999                      |
|  |  |
| 2025-10-02 | 0.9999                      |
|  |  |
| 2025-10-03 | 0.9999                      |
|  |  |
| 2025-10-06 | 0.9999                      |
|  |  |
| 2025-10-07 | 0.9999                      |
|  |  |
| 2025-10-08 | 0.9999                      |
|  |  |
| 2025-10-09 | 0.9999                      |
|  |  |
| 2025-10-10 | 0.9999                      |
|  |  |
| 2025-10-14 | 0.9999                      |
|  |  |
| 2025-10-15 | 0.9999                      |
|  |  |
| 2025-10-16 | 0.9999                      |
|  |  |
| 2025-10-17 | 0.9999                      |
|  |  |
| 2025-10-20 | 0.9999                      |
|  |  |
| 2025-10-21 | 0.9999                      |
|  |  |
| 2025-10-22 | 0.9999                      |
|  |  |
| 2025-10-23 | 0.9999                      |
|  |  |
| 2025-10-24 | 0.9999                      |
|  |  |
| 2025-10-27 | 0.9999                      |
|  |  |
| 2025-10-28 | 0.9999                      |
|  |  |
| 2025-10-29 | 0.9999                      |
|  |  |
| 2025-10-30 | 0.9999                      |
|  |  |
| 2025-10-31 | 0.9999                      |
|  |  |

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

### Class: 0L

- **Minimum Initial Investment:** $1000000.00

- **Net Assets of Class:** $4497835617.58

- **Number of Shares Outstanding:** 4498138078.6400

- **Expense Reimbursement/Waiver:** 587850.95

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-10-01 | 0.9999          |
|  |  |
| 2025-10-02 | 0.9999          |
|  |  |
| 2025-10-03 | 0.9999          |
|  |  |
| 2025-10-06 | 0.9999          |
|  |  |
| 2025-10-07 | 0.9999          |
|  |  |
| 2025-10-08 | 0.9999          |
|  |  |
| 2025-10-09 | 0.9999          |
|  |  |
| 2025-10-10 | 0.9999          |
|  |  |
| 2025-10-14 | 0.9999          |
|  |  |
| 2025-10-15 | 0.9999          |
|  |  |
| 2025-10-16 | 0.9999          |
|  |  |
| 2025-10-17 | 0.9999          |
|  |  |
| 2025-10-20 | 0.9999          |
|  |  |
| 2025-10-21 | 0.9999          |
|  |  |
| 2025-10-22 | 0.9999          |
|  |  |
| 2025-10-23 | 0.9999          |
|  |  |
| 2025-10-24 | 0.9999          |
|  |  |
| 2025-10-27 | 0.9999          |
|  |  |
| 2025-10-28 | 0.9999          |
|  |  |
| 2025-10-29 | 0.9999          |
|  |  |
| 2025-10-30 | 0.9999          |
|  |  |
| 2025-10-31 | 0.9999          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2025-10-01 | $289165928.76             | $109950017.01           |
| 2025-10-02 | $105135180.22             | $30213847.70            |
| 2025-10-03 | $26786579.08              | $260929202.58           |
| 2025-10-06 | $14201945.76              | $35521501.62            |
| 2025-10-07 | $36570819.19              | $19549974.77            |
| 2025-10-08 | $12941284.77              | $71504550.92            |
| 2025-10-09 | $2557738.96               | $28167259.09            |
| 2025-10-10 | $123772753.93             | $47949442.77            |
| 2025-10-14 | $4797636.01               | $77846722.50            |
| 2025-10-15 | $79939053.54              | $47650822.41            |
| 2025-10-16 | $15399907.97              | $6831357.64             |
| 2025-10-17 | $43948944.36              | $14378813.54            |
| 2025-10-20 | $6769678.95               | $34405847.15            |
| 2025-10-21 | $33757861.16              | $142478290.61           |
| 2025-10-22 | $21049775.38              | $18064427.28            |
| 2025-10-23 | $6270067.19               | $78983242.92            |
| 2025-10-24 | $166075101.65             | $14957827.76            |
| 2025-10-27 | $31762263.35              | $77874682.11            |
| 2025-10-28 | $35142394.24              | $349377490.25           |
| 2025-10-29 | $7639560.66               | $51653968.96            |
| 2025-10-30 | $37907023.05              | $47200646.34            |
| 2025-10-31 | $298578138.23             | $290877130.80           |

**Total Gross Subscriptions (Month):** $1400169636.41

**Total Gross Redemptions (Month):** $1856367066.73

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-10-01 | 3.9800%           |
| 2025-10-02 | 3.9700%           |
| 2025-10-03 | 3.9500%           |
| 2025-10-06 | 3.9500%           |
| 2025-10-07 | 3.9400%           |
| 2025-10-08 | 3.9400%           |
| 2025-10-09 | 3.9400%           |
| 2025-10-10 | 3.9300%           |
| 2025-10-14 | 3.9300%           |
| 2025-10-15 | 3.9300%           |
| 2025-10-16 | 3.9200%           |
| 2025-10-17 | 3.9200%           |
| 2025-10-20 | 3.9100%           |
| 2025-10-21 | 3.9100%           |
| 2025-10-22 | 3.9100%           |
| 2025-10-23 | 3.9000%           |
| 2025-10-24 | 3.8900%           |
| 2025-10-27 | 3.8900%           |
| 2025-10-28 | 3.8800%           |
| 2025-10-29 | 3.8800%           |
| 2025-10-30 | 3.8700%           |
| 2025-10-31 | 3.8600%           |

**Beneficial/Record Owner Categories**
| Category      | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Broker-dealer |  | 5.2400%          | 0.0000%              |
| Broker-dealer |  | 33.8700%         | 0.0000%              |
| Broker-dealer |  | 34.9800%         | 0.0000%              |

### Class: 0I

- **Minimum Initial Investment:** $1000000.00

- **Net Assets of Class:** $2875894428.77

- **Number of Shares Outstanding:** 2876079762.0800

- **Expense Reimbursement/Waiver:** 484415.18

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-10-01 | 0.9999          |
|  |  |
| 2025-10-02 | 0.9999          |
|  |  |
| 2025-10-03 | 0.9999          |
|  |  |
| 2025-10-06 | 0.9999          |
|  |  |
| 2025-10-07 | 0.9999          |
|  |  |
| 2025-10-08 | 0.9999          |
|  |  |
| 2025-10-09 | 0.9999          |
|  |  |
| 2025-10-10 | 0.9999          |
|  |  |
| 2025-10-14 | 0.9999          |
|  |  |
| 2025-10-15 | 0.9999          |
|  |  |
| 2025-10-16 | 0.9999          |
|  |  |
| 2025-10-17 | 0.9999          |
|  |  |
| 2025-10-20 | 0.9999          |
|  |  |
| 2025-10-21 | 0.9999          |
|  |  |
| 2025-10-22 | 0.9999          |
|  |  |
| 2025-10-23 | 0.9999          |
|  |  |
| 2025-10-24 | 0.9999          |
|  |  |
| 2025-10-27 | 0.9999          |
|  |  |
| 2025-10-28 | 0.9999          |
|  |  |
| 2025-10-29 | 0.9999          |
|  |  |
| 2025-10-30 | 0.9999          |
|  |  |
| 2025-10-31 | 0.9999          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2025-10-01 | $9419468.24               | $99297106.49            |
| 2025-10-02 | $5073915.36               | $6261.84                |
| 2025-10-03 | $35778431.24              | $0.00                   |
| 2025-10-06 | $7041809.10               | $0.00                   |
| 2025-10-07 | $21866062.51              | $0.00                   |
| 2025-10-08 | $0.00                     | $89756940.58            |
| 2025-10-09 | $0.00                     | $147520093.38           |
| 2025-10-10 | $0.00                     | $19898502.75            |
| 2025-10-14 | $1998077.21               | $0.00                   |
| 2025-10-15 | $193132365.76             | $63516.62               |
| 2025-10-16 | $0.00                     | $120794104.00           |
| 2025-10-17 | $0.00                     | $59386147.89            |
| 2025-10-20 | $0.00                     | $40130889.29            |
| 2025-10-21 | $0.00                     | $67695748.74            |
| 2025-10-22 | $58758175.88              | $28280.10               |
| 2025-10-23 | $0.00                     | $122462130.16           |
| 2025-10-24 | $135715126.41             | $0.00                   |
| 2025-10-27 | $0.00                     | $15390066.57            |
| 2025-10-28 | $57492375.77              | $0.00                   |
| 2025-10-29 | $142367983.04             | $0.00                   |
| 2025-10-30 | $0.00                     | $92789718.41            |
| 2025-10-31 | $0.00                     | $106937013.50           |

**Total Gross Subscriptions (Month):** $668643790.52

**Total Gross Redemptions (Month):** $982156520.32

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-10-01 | 3.9300%           |
| 2025-10-02 | 3.9200%           |
| 2025-10-03 | 3.9000%           |
| 2025-10-06 | 3.9000%           |
| 2025-10-07 | 3.8900%           |
| 2025-10-08 | 3.8900%           |
| 2025-10-09 | 3.8900%           |
| 2025-10-10 | 3.8800%           |
| 2025-10-14 | 3.8800%           |
| 2025-10-15 | 3.8800%           |
| 2025-10-16 | 3.8700%           |
| 2025-10-17 | 3.8700%           |
| 2025-10-20 | 3.8600%           |
| 2025-10-21 | 3.8600%           |
| 2025-10-22 | 3.8600%           |
| 2025-10-23 | 3.8500%           |
| 2025-10-24 | 3.8400%           |
| 2025-10-27 | 3.8400%           |
| 2025-10-28 | 3.8300%           |
| 2025-10-29 | 3.8300%           |
| 2025-10-30 | 3.8200%           |
| 2025-10-31 | 3.8100%           |

**Beneficial/Record Owner Categories**
| Category                                            | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Depository institution or other banking institution |  | 99.6500%         | 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):** $7402342010.46
- **C.18.a - Value (excl. sponsor support):** $7402342010.46
- **C.19 - Percentage of Net Assets:** 100.0000%
- **C.17 - Yield as of Reporting Date:** 0.0000%
- **C.11 - Maturity Date (WAM):** 2025-11-03
- **C.12 - Maturity Date (WAL):** 2025-11-03
- **C.13 - Final Legal Maturity Date:** 2025-11-03
- **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:** 2025-11-07

**By:** /s/Christopher Berarducci

**Name of Signing Officer:** Christopher Berarducci

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