# EDGAR Filing Document

**Accession Number:** 0000773757
**File Stem:** 0001193125-26-079851
**Filing Date:** 2026-2
**Character Count:** 2317
**Document Hash:** 7fbca02c7d1b3a45f1fa965d520589a9
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-26-079851.hdr.sgml**: 20260227

**ACCESSION NUMBER**: 0001193125-26-079851

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260227

**DATE AS OF CHANGE**: 20260227

**EFFECTIVENESS DATE**: 20260227

**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:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 002-99356
- **FILM NUMBER:** 26693652

**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

### Multi-Manager Alternative Strategies Fund (Series ID: S000036207)

| Class ID   | Class Name                                                    | Ticker Symbol   |
|:---|:---|:---|
| C000179757 | Multi-Manager Alternative Strategies Fund Institutional Class | CZAMX           |

**Supplement dated February 27, 2026**

to the Prospectus and Summary Prospectus, each as supplemented of the following fund:

---

| | |
|:---|:---|
| **Fund** | **Prospectus and Summary Prospectus Dated** |
| Columbia Funds Series Trust I |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Multi-Manager Alternative Strategies Fund | 1/1/2026 |

---

*As stated in the Fund's Prospectus and Summary Prospectus supplement dated January 2, 2026, MidOcean Credit Fund Management, L.P. was expected to start managing a portion of the Fund's assets in the first quarter of 2026 (the Start Date). It has been determined the Start Date is now March 5, 2026.*

*Shareholders should retain this Supplement for future reference.*

SUP100_08_025_(02/26)

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