Supplement dated June 27, 2024

to the Prospectus and Summary Prospectus, each as supplemented, if applicable, of the following Fund (the Fund): 

Fund	Prospectus and Summary Prospectus Dated
Columbia Funds Series Trust
Columbia Short Term Bond Fund	8/1/2023

The Board of Trustees of the Fund recently approved the conversion of Class Advisor (Class Adv) shares of the Fund to Class Institutional (Class Inst) shares of the Fund and the subsequent elimination of Class Adv as a share class of the Fund.

Effective at close of business on November 22, 2024, Class Adv shares of the Fund will be converted into Class Inst shares of the Fund. This will be a tax-free transaction for existing Class Adv shareholders. Effective on November 25, 2024, all references to Class Adv are hereby deleted from the Fund’s Prospectus and Summary Prospectus.

Effective August 1, 2024 (the Effective Date), the maximum deferred sales charge (load) imposed on redemptions (as a percentage of the lower of the original purchase price or current net asset value) of Class A shares is imposed on certain investments of $500,000 or more redeemed within 12 months after purchase, with certain limited exceptions.

As of the Effective Date, the following section of the Fund's Prospectus and Summary Prospectus is hereby revised as follows:

The Class A column, and the associated footnote, of the “Shareholder Fees” table is hereby revised as follows: 

Shareholder Fees (fees paid directly from your investment)
	Class A
Maximum sales charge (load) imposed on purchases (as a % of offering price)	1.00 %
Maximum deferred sales charge (load) imposed on redemptions (as a % of the lower of the original purchase price or current net asset value)	1.00 %(a)

(a)

For purchases made on or after August 1, 2024, this charge is imposed on certain investments of $500,000 or more redeemed within 12 months after purchase, with certain limited exceptions. For purchases made prior to August 1, 2024, this charge is imposed on certain investments of between $1 million and $50 million redeemed within 18 months after purchase, as follows: 1.00% if redeemed within 12 months after purchase, and 0.50% if redeemed more than 12, but less than 18, months after purchase, with certain limited exceptions.

The rest of the section remains the same.

Shareholders should retain this Supplement for future reference.

SUP222_03_003_(06/24)