# EDGAR Filing Document

**Accession Number:** 0000889512
**File Stem:** 0001193125-26-211705
**Filing Date:** 2026-5
**Character Count:** 18442
**Document Hash:** 020a5a1d0493367936d46fb6b84e7f20
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-211705.hdr.sgml**: 20260507

**ACCESSION NUMBER**: 0001193125-26-211705

**CONFORMED SUBMISSION TYPE**: N-MFP3

**PUBLIC DOCUMENT COUNT**: 1

**CONFORMED PERIOD OF REPORT**: 20260430

**FILED AS OF DATE**: 20260507

**DATE AS OF CHANGE**: 20260507

**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:** 26952687

**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):** 2026-04-30

**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:** $1564781788.68

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

- **Cash:** $0.00

- **Total Other Assets:** $16582.40

- **Total Liabilities:** $4311781.35

- **Net Assets of Series:** $1560486589.73

- **Number of Shares Outstanding (Series):** 1560498169.0900

- **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 (%)   |
|:---|:---|:---|:---|:---|
| 2026-04-01 | $19018070720.61           | $19018070720.61            | 99.8100%                  | 99.8100%                   |
| 2026-04-02 | $19362880979.23           | $19362880979.23            | 99.8000%                  | 99.8000%                   |
| 2026-04-03 | $0.00                     | $0.00                      | 0.0000%                   | 0.0000%                    |
| 2026-04-06 | $19628579219.66           | $19628579219.66            | 99.8000%                  | 99.8000%                   |
| 2026-04-07 | $19515323309.72           | $19515323309.72            | 99.7900%                  | 99.7900%                   |
| 2026-04-08 | $19313452141.65           | $19313452141.65            | 99.7900%                  | 99.7900%                   |
| 2026-04-09 | $18746726621.74           | $18746726621.74            | 99.7800%                  | 99.7800%                   |
| 2026-04-10 | $18532895419.29           | $18532895419.29            | 99.7600%                  | 99.7600%                   |
| 2026-04-13 | $19086436054.94           | $19086436054.94            | 99.7700%                  | 99.7700%                   |
| 2026-04-14 | $18664127356.80           | $18664127356.80            | 99.7600%                  | 99.7600%                   |
| 2026-04-15 | $18453208879.53           | $18453208879.53            | 99.7700%                  | 99.7700%                   |
| 2026-04-16 | $17845696920.56           | $17845696920.56            | 99.7600%                  | 99.7600%                   |
| 2026-04-17 | $17687079522.86           | $17687079522.86            | 99.7400%                  | 99.7400%                   |
| 2026-04-20 | $17890100456.18           | $17890100456.18            | 99.7300%                  | 99.7300%                   |
| 2026-04-21 | $18270428495.77           | $18270428495.77            | 99.7300%                  | 99.7300%                   |
| 2026-04-22 | $17740373295.56           | $17740373295.56            | 99.7100%                  | 99.7100%                   |
| 2026-04-23 | $18737724284.92           | $18737724284.92            | 99.7200%                  | 99.7200%                   |
| 2026-04-24 | $17950258111.19           | $17950258111.19            | 99.7000%                  | 99.7000%                   |
| 2026-04-27 | $17783684856.71           | $17783684856.71            | 99.6900%                  | 99.6900%                   |
| 2026-04-28 | $18331414818.28           | $18331414818.28            | 99.7000%                  | 99.7000%                   |
| 2026-04-29 | $18722630529.03           | $18722630529.03            | 99.7100%                  | 99.7100%                   |
| 2026-04-30 | $18767006382.24           | $18767006382.24            | 99.8900%                  | 99.8900%                   |

### 7-Day Gross Yield
| Date       | 7-Day Gross Yield   |
|:---|:---|
| 2026-04-01 | 3.7200%             |
| 2026-04-02 | 3.7100%             |
| 2026-04-03 | 0.0000%             |
| 2026-04-06 | 3.7100%             |
| 2026-04-07 | 3.7100%             |
| 2026-04-08 | 3.7100%             |
| 2026-04-09 | 3.7100%             |
| 2026-04-10 | 3.7100%             |
| 2026-04-13 | 3.7100%             |
| 2026-04-14 | 3.7100%             |
| 2026-04-15 | 3.7100%             |
| 2026-04-16 | 3.7100%             |
| 2026-04-17 | 3.7100%             |
| 2026-04-20 | 3.7100%             |
| 2026-04-21 | 3.7100%             |
| 2026-04-22 | 3.7100%             |
| 2026-04-23 | 3.7100%             |
| 2026-04-24 | 3.7100%             |
| 2026-04-27 | 3.7100%             |
| 2026-04-28 | 3.7100%             |
| 2026-04-29 | 3.7100%             |
| 2026-04-30 | 3.7100%             |

### Daily Net Asset Value per Share (Series)
| Date       | Net Asset Value per Share   |
|:---|:---|
| 2026-04-01 | 1.0000                      |
|  |  |
| 2026-04-02 | 1.0000                      |
|  |  |
| 2026-04-03 | 0.0000                      |
|  |  |
| 2026-04-06 | 1.0000                      |
|  |  |
| 2026-04-07 | 1.0000                      |
|  |  |
| 2026-04-08 | 1.0000                      |
|  |  |
| 2026-04-09 | 1.0000                      |
|  |  |
| 2026-04-10 | 1.0000                      |
|  |  |
| 2026-04-13 | 1.0000                      |
|  |  |
| 2026-04-14 | 1.0000                      |
|  |  |
| 2026-04-15 | 1.0000                      |
|  |  |
| 2026-04-16 | 1.0000                      |
|  |  |
| 2026-04-17 | 1.0000                      |
|  |  |
| 2026-04-20 | 1.0000                      |
|  |  |
| 2026-04-21 | 1.0000                      |
|  |  |
| 2026-04-22 | 1.0000                      |
|  |  |
| 2026-04-23 | 1.0000                      |
|  |  |
| 2026-04-24 | 1.0000                      |
|  |  |
| 2026-04-27 | 1.0000                      |
|  |  |
| 2026-04-28 | 1.0000                      |
|  |  |
| 2026-04-29 | 1.0000                      |
|  |  |
| 2026-04-30 | 1.0000                      |
|  |  |

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

### Class: PC

- **Minimum Initial Investment:** $1.00

- **Net Assets of Class:** $1530824349.69

- **Number of Shares Outstanding:** 1530835765.9100

- **Expense Reimbursement/Waiver:** 272755.77

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2026-04-01 | 1.0000          |
|  |  |
| 2026-04-02 | 1.0000          |
|  |  |
| 2026-04-03 | 0.0000          |
|  |  |
| 2026-04-06 | 1.0000          |
|  |  |
| 2026-04-07 | 1.0000          |
|  |  |
| 2026-04-08 | 1.0000          |
|  |  |
| 2026-04-09 | 1.0000          |
|  |  |
| 2026-04-10 | 1.0000          |
|  |  |
| 2026-04-13 | 1.0000          |
|  |  |
| 2026-04-14 | 1.0000          |
|  |  |
| 2026-04-15 | 1.0000          |
|  |  |
| 2026-04-16 | 1.0000          |
|  |  |
| 2026-04-17 | 1.0000          |
|  |  |
| 2026-04-20 | 1.0000          |
|  |  |
| 2026-04-21 | 1.0000          |
|  |  |
| 2026-04-22 | 1.0000          |
|  |  |
| 2026-04-23 | 1.0000          |
|  |  |
| 2026-04-24 | 1.0000          |
|  |  |
| 2026-04-27 | 1.0000          |
|  |  |
| 2026-04-28 | 1.0000          |
|  |  |
| 2026-04-29 | 1.0000          |
|  |  |
| 2026-04-30 | 1.0000          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2026-04-01 | $134081840.43             | $76054896.46            |
| 2026-04-02 | $70873942.48              | $0.01                   |
| 2026-04-03 | $0.00                     | $0.00                   |
| 2026-04-06 | $135466710.18             | $225000.00              |
| 2026-04-07 | $5854928.26               | $0.00                   |
| 2026-04-08 | $23898066.16              | $0.00                   |
| 2026-04-09 | $75725585.05              | $113514798.68           |
| 2026-04-10 | $209446840.97             | $801000.00              |
| 2026-04-13 | $238980025.66             | $291000.00              |
| 2026-04-14 | $140724578.40             | $84080000.00            |
| 2026-04-15 | $116000.00                | $305247767.91           |
| 2026-04-16 | $11068000.00              | $237496528.13           |
| 2026-04-17 | $4848994.65               | $293000.00              |
| 2026-04-20 | $147115265.19             | $226000.00              |
| 2026-04-21 | $307000.00                | $64607156.52            |
| 2026-04-22 | $102000.00                | $11940841.92            |
| 2026-04-23 | $0.00                     | $13860680.21            |
| 2026-04-24 | $0.00                     | $74920739.80            |
| 2026-04-27 | $4000.00                  | $24522815.00            |
| 2026-04-28 | $208666621.08             | $0.00                   |
| 2026-04-29 | $84696904.73              | $100000000.00           |
| 2026-04-30 | $7100539.69               | $329000.00              |

**Total Gross Subscriptions (Month):** $1499077842.93

**Total Gross Redemptions (Month):** $1108411224.64

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2026-04-01 | 3.5800%           |
| 2026-04-02 | 3.5700%           |
| 2026-04-03 | 0.0000%           |
| 2026-04-06 | 3.5700%           |
| 2026-04-07 | 3.5700%           |
| 2026-04-08 | 3.5700%           |
| 2026-04-09 | 3.5800%           |
| 2026-04-10 | 3.5700%           |
| 2026-04-13 | 3.5700%           |
| 2026-04-14 | 3.5700%           |
| 2026-04-15 | 3.5700%           |
| 2026-04-16 | 3.5700%           |
| 2026-04-17 | 3.5700%           |
| 2026-04-20 | 3.5700%           |
| 2026-04-21 | 3.5700%           |
| 2026-04-22 | 3.5700%           |
| 2026-04-23 | 3.5700%           |
| 2026-04-24 | 3.5700%           |
| 2026-04-27 | 3.5700%           |
| 2026-04-28 | 3.5700%           |
| 2026-04-29 | 3.5700%           |
| 2026-04-30 | 3.5700%           |

**Beneficial/Record Owner Categories**
| Category                  | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Insurance company         |  | 23.0500%         | 0.0000%              |
| Non-financial corporation |  | 65.0000%         | 0.0000%              |

### Class: CC

- **Minimum Initial Investment:** $200000000.00

- **Net Assets of Class:** $29662240.04

- **Number of Shares Outstanding:** 29662403.1800

- **Expense Reimbursement/Waiver:** 10334.43

**Daily Net Asset Value per Share (Class)**
| Date       | NAV per Share   |
|:---|:---|
| 2026-04-01 | 1.0000          |
|  |  |
| 2026-04-02 | 1.0000          |
|  |  |
| 2026-04-03 | 0.0000          |
|  |  |
| 2026-04-06 | 1.0000          |
|  |  |
| 2026-04-07 | 1.0000          |
|  |  |
| 2026-04-08 | 1.0000          |
|  |  |
| 2026-04-09 | 1.0000          |
|  |  |
| 2026-04-10 | 1.0000          |
|  |  |
| 2026-04-13 | 1.0000          |
|  |  |
| 2026-04-14 | 1.0000          |
|  |  |
| 2026-04-15 | 1.0000          |
|  |  |
| 2026-04-16 | 1.0000          |
|  |  |
| 2026-04-17 | 1.0000          |
|  |  |
| 2026-04-20 | 1.0000          |
|  |  |
| 2026-04-21 | 1.0000          |
|  |  |
| 2026-04-22 | 1.0000          |
|  |  |
| 2026-04-23 | 1.0000          |
|  |  |
| 2026-04-24 | 1.0000          |
|  |  |
| 2026-04-27 | 1.0000          |
|  |  |
| 2026-04-28 | 1.0000          |
|  |  |
| 2026-04-29 | 1.0000          |
|  |  |
| 2026-04-30 | 1.0000          |
|  |  |

**Daily Shareholder Flows**
| Date       | Gross Subscriptions ($)   | Gross Redemptions ($)   |
|:---|:---|:---|
| 2026-04-01 | $118344.68                | $6000000.00             |
| 2026-04-02 | $0.00                     | $0.00                   |
| 2026-04-03 | $0.00                     | $0.00                   |
| 2026-04-06 | $0.00                     | $0.00                   |
| 2026-04-07 | $0.00                     | $0.00                   |
| 2026-04-08 | $31250000.00              | $0.00                   |
| 2026-04-09 | $0.00                     | $0.00                   |
| 2026-04-10 | $0.00                     | $0.00                   |
| 2026-04-13 | $3000000.00               | $0.00                   |
| 2026-04-14 | $0.00                     | $0.00                   |
| 2026-04-15 | $0.00                     | $0.00                   |
| 2026-04-16 | $0.00                     | $28900000.00            |
| 2026-04-17 | $0.00                     | $0.00                   |
| 2026-04-20 | $0.00                     | $0.00                   |
| 2026-04-21 | $0.00                     | $0.00                   |
| 2026-04-22 | $0.00                     | $0.00                   |
| 2026-04-23 | $0.00                     | $0.00                   |
| 2026-04-24 | $0.00                     | $0.00                   |
| 2026-04-27 | $0.00                     | $5000000.00             |
| 2026-04-28 | $0.00                     | $0.00                   |
| 2026-04-29 | $950000.00                | $0.00                   |
| 2026-04-30 | $0.00                     | $0.00                   |

**Total Gross Subscriptions (Month):** $35318344.68

**Total Gross Redemptions (Month):** $39900000.00

**7-Day Net Yield (Class)**
| Date       | 7-Day Net Yield   |
|:---|:---|
| 2026-04-01 | 3.6000%           |
| 2026-04-02 | 3.5900%           |
| 2026-04-03 | 0.0000%           |
| 2026-04-06 | 3.5900%           |
| 2026-04-07 | 3.5900%           |
| 2026-04-08 | 3.5900%           |
| 2026-04-09 | 3.5900%           |
| 2026-04-10 | 3.5900%           |
| 2026-04-13 | 3.5900%           |
| 2026-04-14 | 3.5900%           |
| 2026-04-15 | 3.5900%           |
| 2026-04-16 | 3.5900%           |
| 2026-04-17 | 3.5900%           |
| 2026-04-20 | 3.5900%           |
| 2026-04-21 | 3.5900%           |
| 2026-04-22 | 3.5900%           |
| 2026-04-23 | 3.5900%           |
| 2026-04-24 | 3.5900%           |
| 2026-04-27 | 3.5900%           |
| 2026-04-28 | 3.5900%           |
| 2026-04-29 | 3.5900%           |
| 2026-04-30 | 3.5900%           |

**Beneficial/Record Owner Categories**
| Category                  | Other Category   | Record Owner %   | Beneficial Owner %   |
|:---|:---|:---|:---|
| Non-financial corporation |  | 57.2000%         | 0.0000%              |
| Non-financial corporation |  | 7.2200%          | 0.0000%              |
| Non-financial corporation |  | 10.3800%         | 0.0000%              |
| Non-financial corporation |  | 10.3800%         | 0.0000%              |
| Non-financial corporation |  | 6.8400%          | 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):** $1564781788.68
- **C.18.a - Value (excl. sponsor support):** $1564781788.68
- **C.19 - Percentage of Net Assets:** 100.0000%
- **C.17 - Yield as of Reporting Date:** 0.0000%
- **C.11 - Maturity Date (WAM):** 2026-05-01
- **C.12 - Maturity Date (WAL):** 2026-05-01
- **C.13 - Final Legal Maturity Date:** 2026-05-01
- **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:** 2026-05-07

**By:** /s/Christopher Berarducci

**Name of Signing Officer:** Christopher Berarducci

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