497 1 custifprosupp.txt CUSTIF PM CHANGE SUPPLEMENTS COLUMBIA U.S. TREASURY INDEX FUND (the "Fund") SERIES OF COLUMBIA FUNDS SERIES TRUST I Supplement to the Prospectuses dated August 1, 2006 The section captioned "Portfolio Manager" is removed and replaced in its entirety by the following disclosure: PORTFOLIO MANAGERS ------------------------------------------------------------------------------- David Lindsay, a director of Columbia Advisors, is a co-manager for the Fund and has managed or co-managed the Fund since July, 1994. Mr. Lindsay has been associated with Columbia Advisors or its predecessors since 1986. Brian Drainville, a director of Columbia Advisors, is a co-manager for the Fund and has co-managed the Fund since May, 2007. Mr. Drainville has been associated with Columbia Advisors or its predecessors since 1996. Effective August 1, 2007, Mr. Lindsay will no longer co-manage the Fund. Mr. Drainville will become the sole manager for the Fund at that time. The Statement of Additional Information provides additional information about the managers' compensation, other accounts managed and ownership of securities in the Fund. INT-47/130884-0507 May 4, 2007 COLUMBIA U.S. TREASURY INDEX FUND (the "Fund") SERIES OF COLUMBIA FUNDS SERIES TRUST I Supplement to the Statement of Additional Information dated August 1, 2006 The following information as it pertains to the Fund is revised by adding information relating to Mr. Brian Drainville as co-manager of the Fund: o The following is added to the table under the heading "Other Accounts Managed by the Portfolio Manager":
----------------------- -------------------------------- ------------------------------ ------------------------------ Portfolio Manager Other SEC-registered Other pooled investment Other accounts open-end and closed-end funds vehicles ----------------------- -------------------------------- ------------------------------ ------------------------------ ----------------------- --------------- ---------------- ----------------- ------------ ------------ ----------------- Number Number of of Number of accounts Assets accounts Assets accounts Assets ----------------------- --------------- ---------------- ----------------- ------------ ------------ ----------------- ----------------------- --------------- ---------------- ----------------- ------------ ------------ ----------------- Brian Drainville 1 $1.7 billion 12 $3 billion 73 $4 billion ----------------------- --------------- ---------------- ----------------- ------------ ------------ ----------------- Account information is provided as of January 31, 2007.
o The following is added to the table under the heading "Ownership of Securities":
------------------------------------------------------ ----------------------------------------------------- Dollar Range of Equity Securities Portfolio Manager in the Fund Beneficially Owned ------------------------------------------------------ ----------------------------------------------------- ------------------------------------------------------ ----------------------------------------------------- Brian Drainville None ------------------------------------------------------ ----------------------------------------------------- Account information is provided as of January 31, 2007.
o The following is added to the table under the heading "Compensation":
-------------------------------- ------------------------------------------- ----------------------------------------- Portfolio Manager Performance Benchmark Peer Group -------------------------------- ------------------------------------------- ----------------------------------------- -------------------------------- ------------------------------------------- ----------------------------------------- Brian Drainville Citigroup Bond U.S. Treasury Index Lipper General U.S. Treasury Category -------------------------------- ------------------------------------------- -----------------------------------------
INT-50/130883-0507 May 4, 2007