# EDGAR Filing Document

**Accession Number:** 0001097519
**File Stem:** 0001193125-25-259930
**Filing Date:** 2025-10
**Character Count:** 4614
**Document Hash:** 1f88af8dcb6075d374a5ccc8f96eb823
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001193125-25-259930.hdr.sgml**: 20251031

**ACCESSION NUMBER**: 0001193125-25-259930

**CONFORMED SUBMISSION TYPE**: 497K

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20251031

**DATE AS OF CHANGE**: 20251031

**EFFECTIVENESS DATE**: 20251031

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** COLUMBIA FUNDS SERIES TRUST
- **CENTRAL INDEX KEY:** 0001097519

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** 497K
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-89661
- **FILM NUMBER:** 251438467

**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:** NATIONS FUNDS TRUST
- **DATE OF NAME CHANGE:** 19991022

## Series and Classes Contracts Data

### Columbia Capital Allocation Moderate Aggressive Portfolio (Series ID: S000010774)

| Class ID   | Class Name                                                                      | Ticker Symbol   |
|:---|:---|:---|
| C000029775 | Columbia Capital Allocation Moderate Aggressive Portfolio Class A               | NBIAX           |
| C000029777 | Columbia Capital Allocation Moderate Aggressive Portfolio Class C               | NBICX           |
| C000029778 | Columbia Capital Allocation Moderate Aggressive Portfolio Class R               | CLBRX           |
| C000029779 | Columbia Capital Allocation Moderate Aggressive Portfolio Institutional Class   | NBGPX           |
| C000129843 | Columbia Capital Allocation Moderate Aggressive Portfolio Institutional 3 Class | CPHNX           |
| C000251871 | Columbia Capital Allocation Moderate Aggressive Portfolio Class S               | NBGDX           |

**Supplement dated October 31, 2025**

to the Prospectus and Summary Prospectuses, each as supplemented, of the following funds (each, a Fund, and collectively, the Funds):

---

| | |
|:---|:---|
| **Fund** | **Prospectus and Summary Prospectuses Dated** |
| Columbia Funds Series Trust |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Columbia Capital Allocation Moderate Aggressive Portfolio | 6/1/2025 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Columbia Capital Allocation Moderate Conservative Portfolio | 6/1/2025 |
| Columbia Funds Series Trust II |  |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Columbia Capital Allocation Aggressive Portfolio | 6/1/2025 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Columbia Capital Allocation Conservative Portfolio | 6/1/2025 |
| &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Columbia Capital Allocation Moderate Portfolio | 6/1/2025 |

---

*The portfolio manager information under the heading "Fund Management" in each Summary Prospectus and in the "Summary of the Fund" section of the Prospectus is hereby superseded and replaced with the following:* 

---

| | | | |
|:---|:---|:---|:---|
| **Portfolio Management** | **Title** | **Role with Fund** | **Managed Fund Since** |
| Dan Boncarosky, CFA | &nbsp;&nbsp;&nbsp;&nbsp; Senior Portfolio Manager and Head of <br> Multi-Asset Strategy<br>| Lead Portfolio Manager | 2017 |
| Thomas Nakamura, CFA | Senior Portfolio Manager | Portfolio Manager | 2022 |

---

*The rest of the section remains the same.*

*The portfolio manager information under the heading "Primary Service Provider Contracts - Portfolio Managers" in the "More Information About the Funds" section of the Prospectus is hereby superseded and replaced with the following:* 

---

| | | | |
|:---|:---|:---|:---|
| **Portfolio Management** | **Title** | **Role with Fund** | **Managed Fund Since** |
| Dan Boncarosky, CFA | &nbsp;&nbsp;&nbsp;&nbsp; Senior Portfolio Manager and Head of <br> Multi-Asset Strategy<br>| Lead Portfolio Manager | 2017 |
| Thomas Nakamura, CFA | Senior Portfolio Manager | Portfolio Manager | 2022 |

---

**Mr. Boncarosky** joined one of the Columbia Management legacy firms or acquired business lines in 2008. Mr. Boncarosky began his investment career in 2008 and earned a B.S. from Leonard N. Stern School of Business at New York University.

**Mr. Nakamura** joined the Investment Manager in 2018. Mr. Nakamura began his investment career in 2011 and earned a B.A. from Swarthmore College.

*The rest of the section remains the same.*

*Shareholders should retain this Supplement for future reference.*

SUP000_00_182_(10/25)

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