# EDGAR Filing Document

**Accession Number:** 0000889512
**File Stem:** 0001193125-26-007554
**Filing Date:** 2026-1
**Character Count:** 18444
**Document Hash:** 4fc6392769b94858fb0cfc9ebc3f886b
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-007554.hdr.sgml**: 20260108

**ACCESSION NUMBER**: 0001193125-26-007554

**CONFORMED SUBMISSION TYPE**: N-MFP3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20251231

**FILED AS OF DATE**: 20260108

**DATE AS OF CHANGE**: 20260108

**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:** 26519238

**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):** 2025-12-31

**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:** $2030832379.46

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

- **Cash:** $0.00

- **Total Other Assets:** $30609.14

- **Total Liabilities:** $6845447.89

- **Net Assets of Series:** $2024017540.71

- **Number of Shares Outstanding (Series):** 2024014950.0600

- **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 (%)   |
|:---|:---|:---|:---|:---|
| 2025-12-01 | $18122473278.48           | $18122473278.48            | 99.8600%                  | 99.8600%                   |
| 2025-12-02 | $17097332084.83           | $17246028334.33            | 98.9800%                  | 99.8500%                   |
| 2025-12-03 | $17394219666.02           | $17394219666.02            | 99.8400%                  | 99.8400%                   |
| 2025-12-04 | $17171096225.92           | $17171096225.92            | 99.8400%                  | 99.8400%                   |
| 2025-12-05 | $17814819169.46           | $17814819169.46            | 99.8400%                  | 99.8400%                   |
| 2025-12-08 | $17819370878.43           | $17819370878.43            | 99.8300%                  | 99.8300%                   |
| 2025-12-09 | $18081718587.04           | $18081718587.04            | 99.8300%                  | 99.8300%                   |
| 2025-12-10 | $18159785088.82           | $18159785088.82            | 99.8300%                  | 99.8300%                   |
| 2025-12-11 | $19302349772.23           | $19302349772.23            | 99.8200%                  | 99.8200%                   |
| 2025-12-12 | $19182771724.37           | $19182771724.37            | 99.8100%                  | 99.8100%                   |
| 2025-12-15 | $19521833389.43           | $19521833389.43            | 99.8100%                  | 99.8100%                   |
| 2025-12-16 | $19062661985.27           | $19062661985.27            | 99.8000%                  | 99.8000%                   |
| 2025-12-17 | $19666305441.54           | $19666305441.54            | 99.8000%                  | 99.8000%                   |
| 2025-12-18 | $19656959076.72           | $19656959076.72            | 99.8000%                  | 99.8000%                   |
| 2025-12-19 | $18689096058.93           | $18689096058.93            | 99.7800%                  | 99.7800%                   |
| 2025-12-22 | $19022927229.86           | $19022927229.86            | 99.7800%                  | 99.7800%                   |
| 2025-12-23 | $18292456643.31           | $18292456643.31            | 99.7700%                  | 99.7700%                   |
| 2025-12-24 | $19352298301.15           | $19352298301.15            | 99.7800%                  | 99.7800%                   |
| 2025-12-26 | $19071794756.44           | $19071794756.44            | 99.7500%                  | 99.7500%                   |
| 2025-12-29 | $19507776800.04           | $19507776800.04            | 99.7500%                  | 99.7500%                   |
| 2025-12-30 | $19003505531.88           | $19003505531.88            | 99.7400%                  | 99.7400%                   |
| 2025-12-31 | $19064771063.64           | $19064771063.64            | 99.7900%                  | 99.7900%                   |

### 7-Day Gross Yield
| Date       | 7-Day Gross Yield   |
|:---|:---|
| 2025-12-01 | 3.9600%             |
| 2025-12-02 | 3.9600%             |
| 2025-12-03 | 3.9500%             |
| 2025-12-04 | 3.9500%             |
| 2025-12-05 | 3.9300%             |
| 2025-12-08 | 3.9300%             |
| 2025-12-09 | 3.9200%             |
| 2025-12-10 | 3.9200%             |
| 2025-12-11 | 3.9100%             |
| 2025-12-12 | 3.8900%             |
| 2025-12-15 | 3.8900%             |
| 2025-12-16 | 3.8800%             |
| 2025-12-17 | 3.8700%             |
| 2025-12-18 | 3.8700%             |
| 2025-12-19 | 3.8500%             |
| 2025-12-22 | 3.8400%             |
| 2025-12-23 | 3.8400%             |
| 2025-12-24 | 3.8300%             |
| 2025-12-26 | 3.8200%             |
| 2025-12-29 | 3.8200%             |
| 2025-12-30 | 3.8100%             |
| 2025-12-31 | 3.8100%             |

### Daily Net Asset Value per Share (Series)
| Date       | Net Asset Value per Share   |
|:---|:---|
| 2025-12-01 | 1.0000                      |
|  |  |
| 2025-12-02 | 1.0000                      |
|  |  |
| 2025-12-03 | 1.0000                      |
|  |  |
| 2025-12-04 | 1.0000                      |
|  |  |
| 2025-12-05 | 1.0000                      |
|  |  |
| 2025-12-08 | 1.0000                      |
|  |  |
| 2025-12-09 | 1.0000                      |
|  |  |
| 2025-12-10 | 1.0000                      |
|  |  |
| 2025-12-11 | 1.0000                      |
|  |  |
| 2025-12-12 | 1.0000                      |
|  |  |
| 2025-12-15 | 1.0000                      |
|  |  |
| 2025-12-16 | 1.0000                      |
|  |  |
| 2025-12-17 | 1.0000                      |
|  |  |
| 2025-12-18 | 1.0000                      |
|  |  |
| 2025-12-19 | 1.0000                      |
|  |  |
| 2025-12-22 | 1.0000                      |
|  |  |
| 2025-12-23 | 1.0000                      |
|  |  |
| 2025-12-24 | 1.0000                      |
|  |  |
| 2025-12-26 | 1.0000                      |
|  |  |
| 2025-12-29 | 1.0000                      |
|  |  |
| 2025-12-30 | 1.0000                      |
|  |  |
| 2025-12-31 | 1.0000                      |
|  |  |

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

### Class: PC

- **Minimum Initial Investment:** $1.00

- **Net Assets of Class:** $1954171872.74

- **Number of Shares Outstanding:** 1954171172.9900

- **Expense Reimbursement/Waiver:** 336261.16

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-12-01 | 1.0000          |
|  |  |
| 2025-12-02 | 1.0000          |
|  |  |
| 2025-12-03 | 1.0000          |
|  |  |
| 2025-12-04 | 1.0000          |
|  |  |
| 2025-12-05 | 1.0000          |
|  |  |
| 2025-12-08 | 1.0000          |
|  |  |
| 2025-12-09 | 1.0000          |
|  |  |
| 2025-12-10 | 1.0000          |
|  |  |
| 2025-12-11 | 1.0000          |
|  |  |
| 2025-12-12 | 1.0000          |
|  |  |
| 2025-12-15 | 1.0000          |
|  |  |
| 2025-12-16 | 1.0000          |
|  |  |
| 2025-12-17 | 1.0000          |
|  |  |
| 2025-12-18 | 1.0000          |
|  |  |
| 2025-12-19 | 1.0000          |
|  |  |
| 2025-12-22 | 1.0000          |
|  |  |
| 2025-12-23 | 1.0000          |
|  |  |
| 2025-12-24 | 1.0000          |
|  |  |
| 2025-12-26 | 1.0000          |
|  |  |
| 2025-12-29 | 1.0000          |
|  |  |
| 2025-12-30 | 1.0000          |
|  |  |
| 2025-12-31 | 1.0000          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2025-12-01 | $947078.74                | $187554959.67           |
| 2025-12-02 | $171379939.83             | $0.00                   |
| 2025-12-03 | $25726510.80              | $0.00                   |
| 2025-12-04 | $28411368.92              | $0.00                   |
| 2025-12-05 | $0.00                     | $46464723.92            |
| 2025-12-08 | $0.00                     | $90139581.56            |
| 2025-12-09 | $103.58                   | $16280264.53            |
| 2025-12-10 | $0.00                     | $43701875.44            |
| 2025-12-11 | $506999996.02             | $0.00                   |
| 2025-12-12 | $0.00                     | $239446881.56           |
| 2025-12-15 | $100267988.66             | $0.00                   |
| 2025-12-16 | $50000000.00              | $14910538.58            |
| 2025-12-17 | $16672996.55              | $0.00                   |
| 2025-12-18 | $27887247.66              | $0.00                   |
| 2025-12-19 | $15071106.16              | $0.00                   |
| 2025-12-22 | $218146273.67             | $140142986.17           |
| 2025-12-23 | $208398266.16             | $0.00                   |
| 2025-12-24 | $27620923.80              | $0.00                   |
| 2025-12-26 | $60079075.16              | $0.00                   |
| 2025-12-29 | $0.00                     | $2442655.39             |
| 2025-12-30 | $10583300.51              | $300000050.00           |
| 2025-12-31 | $6202063.31               | $0.00                   |

**Total Gross Subscriptions (Month):** $1474394239.53

**Total Gross Redemptions (Month):** $1081084516.82

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-12-01 | 3.8200%           |
| 2025-12-02 | 3.8200%           |
| 2025-12-03 | 3.8100%           |
| 2025-12-04 | 3.8100%           |
| 2025-12-05 | 3.7900%           |
| 2025-12-08 | 3.7900%           |
| 2025-12-09 | 3.7800%           |
| 2025-12-10 | 3.7800%           |
| 2025-12-11 | 3.7700%           |
| 2025-12-12 | 3.7500%           |
| 2025-12-15 | 3.7500%           |
| 2025-12-16 | 3.7400%           |
| 2025-12-17 | 3.7300%           |
| 2025-12-18 | 3.7300%           |
| 2025-12-19 | 3.7100%           |
| 2025-12-22 | 3.7000%           |
| 2025-12-23 | 3.7000%           |
| 2025-12-24 | 3.6900%           |
| 2025-12-26 | 3.6800%           |
| 2025-12-29 | 3.6800%           |
| 2025-12-30 | 3.6700%           |
| 2025-12-31 | 3.6700%           |

**Beneficial/Record Owner Categories**
| Category                  | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Non-financial corporation |  | 28.1300%         | 0.0000%              |
| Non-financial corporation |  | 54.7500%         | 0.0000%              |
| Non-financial corporation |  | 5.1100%          | 0.0000%              |
| Non-financial corporation |  | 5.1300%          | 0.0000%              |

### Class: CC

- **Minimum Initial Investment:** $200000000.00

- **Net Assets of Class:** $69845667.97

- **Number of Shares Outstanding:** 69843777.0700

- **Expense Reimbursement/Waiver:** 43722.43

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2025-12-01 | 1.0000          |
|  |  |
| 2025-12-02 | 1.0000          |
|  |  |
| 2025-12-03 | 1.0000          |
|  |  |
| 2025-12-04 | 1.0000          |
|  |  |
| 2025-12-05 | 1.0000          |
|  |  |
| 2025-12-08 | 1.0000          |
|  |  |
| 2025-12-09 | 1.0000          |
|  |  |
| 2025-12-10 | 1.0000          |
|  |  |
| 2025-12-11 | 1.0000          |
|  |  |
| 2025-12-12 | 1.0000          |
|  |  |
| 2025-12-15 | 1.0000          |
|  |  |
| 2025-12-16 | 1.0000          |
|  |  |
| 2025-12-17 | 1.0000          |
|  |  |
| 2025-12-18 | 1.0000          |
|  |  |
| 2025-12-19 | 1.0000          |
|  |  |
| 2025-12-22 | 1.0000          |
|  |  |
| 2025-12-23 | 1.0000          |
|  |  |
| 2025-12-24 | 1.0000          |
|  |  |
| 2025-12-26 | 1.0000          |
|  |  |
| 2025-12-29 | 1.0000          |
|  |  |
| 2025-12-30 | 1.0000          |
|  |  |
| 2025-12-31 | 1.0000          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2025-12-01 | $135210092.49             | $0.00                   |
| 2025-12-02 | $0.00                     | $4000000.00             |
| 2025-12-03 | $0.00                     | $0.00                   |
| 2025-12-04 | $0.00                     | $0.00                   |
| 2025-12-05 | $0.00                     | $0.00                   |
| 2025-12-08 | $0.00                     | $0.00                   |
| 2025-12-09 | $0.00                     | $0.00                   |
| 2025-12-10 | $0.00                     | $0.00                   |
| 2025-12-11 | $0.00                     | $0.00                   |
| 2025-12-12 | $0.00                     | $0.00                   |
| 2025-12-15 | $0.00                     | $0.00                   |
| 2025-12-16 | $0.00                     | $0.00                   |
| 2025-12-17 | $10000000.00              | $0.00                   |
| 2025-12-18 | $0.00                     | $10000000.00            |
| 2025-12-19 | $0.00                     | $0.00                   |
| 2025-12-22 | $31000000.00              | $0.00                   |
| 2025-12-23 | $0.00                     | $0.00                   |
| 2025-12-24 | $0.00                     | $0.00                   |
| 2025-12-26 | $0.00                     | $0.00                   |
| 2025-12-29 | $0.00                     | $0.00                   |
| 2025-12-30 | $0.00                     | $14732000.00            |
| 2025-12-31 | $0.00                     | $147000000.00           |

**Total Gross Subscriptions (Month):** $176210092.49

**Total Gross Redemptions (Month):** $175732000.00

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2025-12-01 | 3.8400%           |
| 2025-12-02 | 3.8400%           |
| 2025-12-03 | 3.8300%           |
| 2025-12-04 | 3.8300%           |
| 2025-12-05 | 3.8100%           |
| 2025-12-08 | 3.8100%           |
| 2025-12-09 | 3.8000%           |
| 2025-12-10 | 3.8000%           |
| 2025-12-11 | 3.7900%           |
| 2025-12-12 | 3.7700%           |
| 2025-12-15 | 3.7700%           |
| 2025-12-16 | 3.7600%           |
| 2025-12-17 | 3.7500%           |
| 2025-12-18 | 3.7500%           |
| 2025-12-19 | 3.7300%           |
| 2025-12-22 | 3.7200%           |
| 2025-12-23 | 3.7200%           |
| 2025-12-24 | 3.7100%           |
| 2025-12-26 | 3.7000%           |
| 2025-12-29 | 3.7000%           |
| 2025-12-30 | 3.6900%           |
| 2025-12-31 | 3.6900%           |

**Beneficial/Record Owner Categories**
| Category                  | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Non-financial corporation |  | 32.1900%         | 0.0000%              |
| Non-financial corporation |  | 48.3200%         | 0.0000%              |
| Non-financial corporation |  | 9.3000%          | 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):** $2030832379.46
- **C.18.a - Value (excl. sponsor support):** $2030832379.46
- **C.19 - Percentage of Net Assets:** 100.0000%
- **C.17 - Yield as of Reporting Date:** 0.0000%
- **C.11 - Maturity Date (WAM):** 2026-01-02
- **C.12 - Maturity Date (WAL):** 2026-01-02
- **C.13 - Final Legal Maturity Date:** 2026-01-02
- **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:** 2026-01-08

**By:** /s/Christopher Berarducci

**Name of Signing Officer:** Christopher Berarducci

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