# EDGAR Filing Document

**Accession Number:** 0000773757
**File Stem:** 0001193125-25-192041
**Filing Date:** 2025-8
**Character Count:** 3932
**Document Hash:** 4b6404c5bacada8d1122eba9c19707ac
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-192041.hdr.sgml**: 20250829

**ACCESSION NUMBER**: 0001193125-25-192041

**CONFORMED SUBMISSION TYPE**: 497

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20250829

**DATE AS OF CHANGE**: 20250829

**EFFECTIVENESS DATE**: 20250829

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** COLUMBIA FUNDS SERIES TRUST I
- **CENTRAL INDEX KEY:** 0000773757

**ORGANIZATION NAME:**
- **EIN:** 363376651
- **STATE OF INCORPORATION:** MA
- **FISCAL YEAR END:** 0630

**FILING VALUES:**
- **FORM TYPE:** 497
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-99356
- **FILM NUMBER:** 251276492

**BUSINESS ADDRESS:**
- **STREET 1:** 290 CONGRESS STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02210
- **BUSINESS PHONE:** 800-345-6611

**MAIL ADDRESS:**
- **STREET 1:** 290 CONGRESS STREET
- **CITY:** BOSTON
- **STATE:** MA
- **ZIP:** 02210

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** COLUMBIA FUNDS TRUST IX
- **DATE OF NAME CHANGE:** 20031107

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** LIBERTY STEIN ROE FUNDS MUNICIPAL TRUST
- **DATE OF NAME CHANGE:** 19991025

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** STEINROE MUNICIPAL TRUST
- **DATE OF NAME CHANGE:** 19920703

## Series and Classes Contracts Data

### Columbia Tax-Exempt Fund (Series ID: S000010620)

---

|  |  |  |
|:---|:---|:---|
| Class Name                                     | Ticker Symbol | Class ID   |
| Columbia Tax-Exempt Fund Class A               | COLTX         | C000029373 |
| Columbia Tax-Exempt Fund Class C               | COLCX         | C000029375 |
| Columbia Tax-Exempt Fund Institutional Class   | CTEZX         | C000029376 |
| Columbia Tax-Exempt Fund Institutional 2 Class | CADMX         | C000136874 |
| Columbia Tax-Exempt Fund Institutional 3 Class | CTEYX         | C000177149 |
| Columbia Tax-Exempt Fund Class S               | CTEDX         | C000253711 |

---

## Series and Classes Contracts Data

### Columbia Tax-Exempt Fund (Series ID: S000010620)

| Class ID   | Class Name                                     | Ticker Symbol   |
|:---|:---|:---|
| C000029373 | Columbia Tax-Exempt Fund Class A               | COLTX           |
| C000029375 | Columbia Tax-Exempt Fund Class C               | COLCX           |
| C000029376 | Columbia Tax-Exempt Fund Institutional Class   | CTEZX           |
| C000136874 | Columbia Tax-Exempt Fund Institutional 2 Class | CADMX           |
| C000177149 | Columbia Tax-Exempt Fund Institutional 3 Class | CTEYX           |
| C000253711 | Columbia Tax-Exempt Fund Class S               | CTEDX           |

**Supplement dated August 29, 2025**

to the Prospectus (as supplemented) of the following Fund:

---

| | |
|:---|:---|
| **Fund** | **Prospectus** |
| Columbia Funds Series Trust I |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Columbia Tax-Exempt Fund | 12/1/2024 |

---

*As previously supplemented on July 2, 2025, the Fund's name will be changed to* ***Columbia Total Return Municipal Income Fund*** *effective on or about September 1, 2025 (the Effective Date).*

*On the Effective Date, the information in the sixth paragraph under the heading "Principal Investment Strategies" in the "More Information about the Fund" section of the Fund's Prospectus is hereby superseded and replaced with the following:*

The Investment Manager, in connection with selecting individual investments for the Fund, evaluates a security based on its potential to generate income and/or capital appreciation (total return). The Investment Manager considers, among other factors, the creditworthiness of the issuer of the security and the various features of the security, such as its interest rate, yield, maturity, any call features and value relative to other securities.

*The rest of the section remains the same.*

*Shareholders should retain this Supplement for future reference.*

SUP233_07_006_(08/25)

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