(a)(4) Amendment No. 3 to DoT (7-7-2025)

COLUMBIA ACORN TRUST

AMENDMENT NO. 3 TO THE

AGREEMENT AND DECLARATION OF TRUST

WHEREAS, the principal place of business of Columbia Acorn Trust (the “Trust”) has changed and the undersigned Trustees wish to amend the Agreement and Declaration of Trust (the “Declaration of Trust”) of the Trust, dated April 21, 1992, as amended from time to time, a copy of which is on file in the Office of the Secretary of The Commonwealth of Massachusetts, to reflect the new address, as authorized by Section 7 of Article IX of the Declaration of Trust;

NOW, THEREFORE, the undersigned, being at least a majority of the Trustees of the Trust, do hereby certify that we have authorized the following amendments to said Declaration of Trust:

The Address of the Trust, the Address of the Trustees and the Address of the Registered Agent are hereby updated as follows:

Address of the Trust:

Columbia Acorn Trust

290 Congress Street

Boston, MA 02210

Address of the Trustees:

C/O Columbia Acorn Trust

290 Congress Street

Boston, MA 02210

Address of the Registered Agent:

CT Corporation

155 Federal Street # 700

Boston, MA 02110

The rest of the Declaration of Trust remains unchanged.

The foregoing amendment is effective as of July 7, 2025.

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IN WITNESS WHEREOF, the undersigned has signed this Amendment No. 3 to the Declaration of Trust on June 26, 2025.


/s/ George S. Batejan				/s/ Brian J. Gallagher
George S. Batejan				Brian J. Gallagher

/s/ Kathleen A. Blatz				/s/ Douglas A. Hacker
Kathleen A. Blatz				Douglas A. Hacker

/s/ Daniel J. Beckman
Daniel J. Beckman				Nancy T. Lukitsh

/s/ Pamela G. Carlton
Pamela G. Carlton				David M. Moffett

/s/ Janet Langford Carrig				/s/ Catherine James Paglia
Janet Langford Carrig				Catherine James Paglia

/s/ J. Kevin Connaughton				/s/ Natalie A. Trunow
J. Kevin Connaughton				Natalie A. Trunow

/s/ Olive M. Darragh				/s/ Sandra L. Yeager
Olive M. Darragh				Sandra L. Yeager

/s/ Patricia M. Flynn
Patricia M. Flynn

Registered Agent:

CT Corporation

155 Federal Street # 700

Boston, MA 02110