# EDGAR Filing Document

**Accession Number:** 0000889512
**File Stem:** 0001193125-26-096186
**Filing Date:** 2026-3
**Character Count:** 16917
**Document Hash:** f7170873ec6264726b4723865731547f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-096186.hdr.sgml**: 20260306

**ACCESSION NUMBER**: 0001193125-26-096186

**CONFORMED SUBMISSION TYPE**: N-MFP3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260228

**FILED AS OF DATE**: 20260306

**DATE AS OF CHANGE**: 20260306

**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:** 26730252

**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):** 2026-02-28

**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:** $1532186627.30

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

- **Cash:** $0.00

- **Total Other Assets:** $22863.09

- **Total Liabilities:** $4615090.10

- **Net Assets of Series:** $1527594400.29

- **Number of Shares Outstanding (Series):** 1527604173.8500

- **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 (%)   |
|:---|:---|:---|:---|:---|
| 2026-02-02 | $19221182059.06           | $19221182059.06            | 99.9300%                  | 99.9300%                   |
| 2026-02-03 | $17166318646.68           | $17166318646.68            | 99.9200%                  | 99.9200%                   |
| 2026-02-04 | $17214205755.55           | $17214205755.55            | 99.9100%                  | 99.9100%                   |
| 2026-02-05 | $17834022462.95           | $17834022462.95            | 99.9300%                  | 99.9300%                   |
| 2026-02-06 | $17797592539.68           | $17797592539.68            | 99.9100%                  | 99.9100%                   |
| 2026-02-09 | $18679048837.41           | $18679048837.41            | 99.9100%                  | 99.9100%                   |
| 2026-02-10 | $17608567705.10           | $17608567705.10            | 99.9000%                  | 99.9000%                   |
| 2026-02-11 | $17830825276.06           | $17830825276.06            | 99.8900%                  | 99.8900%                   |
| 2026-02-12 | $18473811400.32           | $18473811400.32            | 99.8900%                  | 99.8900%                   |
| 2026-02-13 | $17343091852.72           | $17343091852.72            | 99.8700%                  | 99.8700%                   |
| 2026-02-17 | $17288952177.93           | $17288952177.93            | 99.8700%                  | 99.8700%                   |
| 2026-02-18 | $17139036074.06           | $17139036074.06            | 99.8700%                  | 99.8700%                   |
| 2026-02-19 | $18025552493.65           | $18025552493.65            | 99.8700%                  | 99.8700%                   |
| 2026-02-20 | $18209008784.86           | $18209008784.86            | 99.8600%                  | 99.8600%                   |
| 2026-02-23 | $17933604132.40           | $17933604132.40            | 99.8600%                  | 99.8600%                   |
| 2026-02-24 | $17113025855.67           | $17113025855.67            | 99.8500%                  | 99.8500%                   |
| 2026-02-25 | $17289206815.16           | $17289206815.16            | 99.8400%                  | 99.8400%                   |
| 2026-02-26 | $17778928582.79           | $17778928582.79            | 99.8500%                  | 99.8500%                   |
| 2026-02-27 | $17363934243.56           | $17363934243.56            | 99.8400%                  | 99.8400%                   |

### 7-Day Gross Yield
| Date       | 7-Day Gross Yield   |
|:---|:---|
| 2026-02-02 | 3.7200%             |
| 2026-02-03 | 3.7200%             |
| 2026-02-04 | 3.7200%             |
| 2026-02-05 | 3.7200%             |
| 2026-02-06 | 3.7200%             |
| 2026-02-09 | 3.7200%             |
| 2026-02-10 | 3.7200%             |
| 2026-02-11 | 3.7200%             |
| 2026-02-12 | 3.7200%             |
| 2026-02-13 | 3.7200%             |
| 2026-02-17 | 3.7200%             |
| 2026-02-18 | 3.7200%             |
| 2026-02-19 | 3.7200%             |
| 2026-02-20 | 3.7200%             |
| 2026-02-23 | 3.7200%             |
| 2026-02-24 | 3.7200%             |
| 2026-02-25 | 3.7200%             |
| 2026-02-26 | 3.7200%             |
| 2026-02-27 | 3.7200%             |

### Daily Net Asset Value per Share (Series)
| Date       | Net Asset Value per Share   |
|:---|:---|
| 2026-02-02 | 1.0000                      |
|  |  |
| 2026-02-03 | 1.0000                      |
|  |  |
| 2026-02-04 | 1.0000                      |
|  |  |
| 2026-02-05 | 1.0000                      |
|  |  |
| 2026-02-06 | 1.0000                      |
|  |  |
| 2026-02-09 | 1.0000                      |
|  |  |
| 2026-02-10 | 1.0000                      |
|  |  |
| 2026-02-11 | 1.0000                      |
|  |  |
| 2026-02-12 | 1.0000                      |
|  |  |
| 2026-02-13 | 1.0000                      |
|  |  |
| 2026-02-17 | 1.0000                      |
|  |  |
| 2026-02-18 | 1.0000                      |
|  |  |
| 2026-02-19 | 1.0000                      |
|  |  |
| 2026-02-20 | 1.0000                      |
|  |  |
| 2026-02-23 | 1.0000                      |
|  |  |
| 2026-02-24 | 1.0000                      |
|  |  |
| 2026-02-25 | 1.0000                      |
|  |  |
| 2026-02-26 | 1.0000                      |
|  |  |
| 2026-02-27 | 1.0000                      |
|  |  |

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

### Class: PC

- **Minimum Initial Investment:** $1.00

- **Net Assets of Class:** $1497333774.66

- **Number of Shares Outstanding:** 1497343411.8600

- **Expense Reimbursement/Waiver:** 240375.20

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2026-02-02 | 1.0000          |
|  |  |
| 2026-02-03 | 1.0000          |
|  |  |
| 2026-02-04 | 1.0000          |
|  |  |
| 2026-02-05 | 1.0000          |
|  |  |
| 2026-02-06 | 1.0000          |
|  |  |
| 2026-02-09 | 1.0000          |
|  |  |
| 2026-02-10 | 1.0000          |
|  |  |
| 2026-02-11 | 1.0000          |
|  |  |
| 2026-02-12 | 1.0000          |
|  |  |
| 2026-02-13 | 1.0000          |
|  |  |
| 2026-02-17 | 1.0000          |
|  |  |
| 2026-02-18 | 1.0000          |
|  |  |
| 2026-02-19 | 1.0000          |
|  |  |
| 2026-02-20 | 1.0000          |
|  |  |
| 2026-02-23 | 1.0000          |
|  |  |
| 2026-02-24 | 1.0000          |
|  |  |
| 2026-02-25 | 1.0000          |
|  |  |
| 2026-02-26 | 1.0000          |
|  |  |
| 2026-02-27 | 1.0000          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2026-02-02 | $548077.52                | $113223749.42           |
| 2026-02-03 | $0.00                     | $3089140.42             |
| 2026-02-04 | $10533492.86              | $0.00                   |
| 2026-02-05 | $106759028.89             | $0.00                   |
| 2026-02-06 | $23854930.89              | $0.00                   |
| 2026-02-09 | $0.00                     | $38970554.49            |
| 2026-02-10 | $94832456.35              | $0.00                   |
| 2026-02-11 | $0.16                     | $13645516.05            |
| 2026-02-12 | $0.00                     | $40804312.57            |
| 2026-02-13 | $0.00                     | $53736454.82            |
| 2026-02-17 | $87083716.91              | $0.00                   |
| 2026-02-18 | $19106983.68              | $0.00                   |
| 2026-02-19 | $250000000.00             | $54866691.12            |
| 2026-02-20 | $0.00                     | $24868222.56            |
| 2026-02-23 | $0.00                     | $28417362.12            |
| 2026-02-24 | $1000000.00               | $26797613.64            |
| 2026-02-25 | $6105615.56               | $0.00                   |
| 2026-02-26 | $21846241.64              | $0.00                   |
| 2026-02-27 | $0.00                     | $49818548.80            |

**Total Gross Subscriptions (Month):** $621670544.46

**Total Gross Redemptions (Month):** $448238166.01

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2026-02-02 | 3.5800%           |
| 2026-02-03 | 3.5800%           |
| 2026-02-04 | 3.5800%           |
| 2026-02-05 | 3.5800%           |
| 2026-02-06 | 3.5800%           |
| 2026-02-09 | 3.5800%           |
| 2026-02-10 | 3.5800%           |
| 2026-02-11 | 3.5800%           |
| 2026-02-12 | 3.5800%           |
| 2026-02-13 | 3.5800%           |
| 2026-02-17 | 3.5800%           |
| 2026-02-18 | 3.5800%           |
| 2026-02-19 | 3.5800%           |
| 2026-02-20 | 3.5800%           |
| 2026-02-23 | 3.5800%           |
| 2026-02-24 | 3.5800%           |
| 2026-02-25 | 3.5800%           |
| 2026-02-26 | 3.5800%           |
| 2026-02-27 | 3.5800%           |

**Beneficial/Record Owner Categories**
| Category                  | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Non-financial corporation |  | 64.5500%         | 0.0000%              |
| Non-financial corporation |  | 30.0800%         | 0.0000%              |

### Class: CC

- **Minimum Initial Investment:** $200000000.00

- **Net Assets of Class:** $30260625.63

- **Number of Shares Outstanding:** 30260761.9900

- **Expense Reimbursement/Waiver:** 80345.12

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2026-02-02 | 1.0000          |
|  |  |
| 2026-02-03 | 1.0000          |
|  |  |
| 2026-02-04 | 1.0000          |
|  |  |
| 2026-02-05 | 1.0000          |
|  |  |
| 2026-02-06 | 1.0000          |
|  |  |
| 2026-02-09 | 1.0000          |
|  |  |
| 2026-02-10 | 1.0000          |
|  |  |
| 2026-02-11 | 1.0000          |
|  |  |
| 2026-02-12 | 1.0000          |
|  |  |
| 2026-02-13 | 1.0000          |
|  |  |
| 2026-02-17 | 1.0000          |
|  |  |
| 2026-02-18 | 1.0000          |
|  |  |
| 2026-02-19 | 1.0000          |
|  |  |
| 2026-02-20 | 1.0000          |
|  |  |
| 2026-02-23 | 1.0000          |
|  |  |
| 2026-02-24 | 1.0000          |
|  |  |
| 2026-02-25 | 1.0000          |
|  |  |
| 2026-02-26 | 1.0000          |
|  |  |
| 2026-02-27 | 1.0000          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2026-02-02 | $1685202337.44            | $0.00                   |
| 2026-02-03 | $490500000.00             | $1500000000.00          |
| 2026-02-04 | $0.00                     | $0.00                   |
| 2026-02-05 | $0.00                     | $0.00                   |
| 2026-02-06 | $0.00                     | $0.00                   |
| 2026-02-09 | $0.00                     | $0.00                   |
| 2026-02-10 | $10000000.00              | $0.00                   |
| 2026-02-11 | $0.00                     | $0.00                   |
| 2026-02-12 | $0.00                     | $0.00                   |
| 2026-02-13 | $0.00                     | $490500000.00           |
| 2026-02-17 | $0.00                     | $0.00                   |
| 2026-02-18 | $0.00                     | $0.00                   |
| 2026-02-19 | $0.00                     | $0.00                   |
| 2026-02-20 | $0.00                     | $0.00                   |
| 2026-02-23 | $0.00                     | $0.00                   |
| 2026-02-24 | $0.00                     | $0.00                   |
| 2026-02-25 | $0.00                     | $0.00                   |
| 2026-02-26 | $0.00                     | $0.00                   |
| 2026-02-27 | $0.00                     | $195000000.00           |

**Total Gross Subscriptions (Month):** $2185702337.44

**Total Gross Redemptions (Month):** $2185500000.00

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2026-02-02 | 3.6000%           |
| 2026-02-03 | 3.6000%           |
| 2026-02-04 | 3.6000%           |
| 2026-02-05 | 3.6000%           |
| 2026-02-06 | 3.6000%           |
| 2026-02-09 | 3.6000%           |
| 2026-02-10 | 3.6000%           |
| 2026-02-11 | 3.6000%           |
| 2026-02-12 | 3.6000%           |
| 2026-02-13 | 3.6000%           |
| 2026-02-17 | 3.6000%           |
| 2026-02-18 | 3.6000%           |
| 2026-02-19 | 3.6000%           |
| 2026-02-20 | 3.6000%           |
| 2026-02-23 | 3.6000%           |
| 2026-02-24 | 3.6000%           |
| 2026-02-25 | 3.6000%           |
| 2026-02-26 | 3.6000%           |
| 2026-02-27 | 3.6000%           |

**Beneficial/Record Owner Categories**
| Category                  | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Non-financial corporation |  | 9.5000%          | 0.0000%              |
| Non-financial corporation |  | 7.0400%          | 0.0000%              |
| Non-financial corporation |  | 51.6000%         | 0.0000%              |
| Non-financial corporation |  | 21.6100%         | 0.0000%              |
| Non-financial corporation |  | 6.6700%          | 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):** $1532186627.30
- **C.18.a - Value (excl. sponsor support):** $1532186627.30
- **C.19 - Percentage of Net Assets:** 100.0000%
- **C.17 - Yield as of Reporting Date:** 0.0000%
- **C.11 - Maturity Date (WAM):** 2026-03-02
- **C.12 - Maturity Date (WAL):** 2026-03-02
- **C.13 - Final Legal Maturity Date:** 2026-03-02
- **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:** 2026-03-06

**By:** /s/Christopher Berarducci

**Name of Signing Officer:** Christopher Berarducci

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