497 1 abctgzprosupp.txt PROSPECTUS AND SAI SUPPLEMENTS COLUMBIA MID CAP GROWTH FUND, INC. (the "Fund") Supplement to the Class ABC, T&G and Z Share Prospectuses dated January 1, 2006 The section entitled "MANAGING THE FUND - PORTFOLIO MANAGER" is revised in its entirety and replaced with the following: Kenneth A. Korngiebel, a senior vice president of Columbia Advisors, is the lead manager for the Fund and has managed or co-managed the Fund since June, 2004. Mr. Korngiebel has been associated with Columbia Advisors or its predecessors since July, 1996. Wayne M. Collette, a vice president of Columbia Advisors, is a co-manager for the Fund and has co-managed the Fund since February, 2006. Mr. Collette has been associated with Columbia Advisors or its predecessors since 2001. Prior to 2001, Mr. Collette was an associate portfolio manager with Neuberger Berman from 1999 to 2001. J. Michael Kosicki, a portfolio manager of Columbia Advisors, is a co-manager for the Fund and has co-managed the Fund since February, 2006. Mr. Kosicki has been associated with Columbia Advisors or its predecessors since 2004. Prior to 2004, Mr. Kosicki was with Fidelity Investments from 1993 to 2004, most recently as an equity analyst. George J. Myers, a portfolio manager of Columbia Advisors, is a co-manager for the Fund and has co-managed the Fund since February, 2006. Mr. Myers has been associated with Columbia Advisors or its predecessors since 2004. Prior to 2004, Mr. Myers was a portfolio manager with Dresdner RCM Global Investors from 1999 to 2004. Theodore R. Wendell, a vice president of Columbia Advisors, is a co-manager for the Fund and has co-managed the Fund since February, 2006. Mr. Wendell has been associated with Columbia Advisors or its predecessors since 2000. SUP-47/106202-0206 February 3, 2006 COLUMBIA MID CAP GROWTH FUND, INC. (the "Fund") Supplement to Class R Share Prospectus dated January 23, 2006 The section entitled "MANAGING THE FUND - PORTFOLIO MANAGER" is revised in its entirety and replaced with the following: Kenneth A. Korngiebel, a senior vice president of Columbia Advisors, is the lead manager for the Fund and has managed or co-managed the Fund since June, 2004. Mr. Korngiebel has been associated with Columbia Advisors or its predecessors since July, 1996. Wayne M. Collette, a vice president of Columbia Advisors, is a co-manager for the Fund and has co-managed the Fund since February, 2006. Mr. Collette has been associated with Columbia Advisors or its predecessors since 2001. Prior to 2001, Mr. Collette was an associate portfolio manager with Neuberger Berman from 1999 to 2001. J. Michael Kosicki, a portfolio manager of Columbia Advisors, is a co-manager for the Fund and has co-managed the Fund since February, 2006. Mr. Kosicki has been associated with Columbia Advisors or its predecessors since 2004. Prior to 2004, Mr. Kosicki was with Fidelity Investments from 1993 to 2004, most recently as an equity analyst. George J. Myers, a portfolio manager of Columbia Advisors, is a co-manager for the Fund and has co-managed the Fund since February, 2006. Mr. Myers has been associated with Columbia Advisors or its predecessors since 2004. Prior to 2004, Mr. Myers was a portfolio manager with Dresdner RCM Global Investors from 1999 to 2004. Theodore R. Wendell, a vice president of Columbia Advisors, is a co-manager for the Fund and has co-managed the Fund since February, 2006. Mr. Wendell has been associated with Columbia Advisors or its predecessors since 2000. SUP-47/106107-0206 February 3, 2006 COLUMBIA MID CAP GROWTH FUND, INC. SUPPLEMENT TO THE STATEMENT OF ADDITIONAL INFORMATION FOR CLASS ABC, T&G AND Z SHARES DATED JANUARY 1, 2006 1. The following language is added to the chart following the heading "Other Accounts Managed By Portfolio Managers" in the section MANAGEMENT - PORTFOLIO MANAGERS: ---------------------------------- -------------------------------- ---------------------------- ------------------------------- Other SEC-registered open-end and closed-end funds Other pooled investment Portfolio Manager vehicles Other accounts ---------------------------------- -------------------------------- ---------------------------- ------------------------------- ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- Number of Assets Number of Assets Number of Assets accounts accounts accounts ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- Wayne M. Collette* 9 $533 million 1 $8 million 23 $465 million ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- J. Michael Kosicki* 7 $318 million 1 $8 million 27 $465 million ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- George J. Myers* 7 $318 million 1 $8 million 26 $465 million ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- Theodore R. Wendell* 9 $533 million 1 $8 million 29 $465 million ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ----------------
2. The following language is added to the chart following the heading "Ownership of Securities" in the section MANAGEMENT - PORTFOLIO MANAGERS: ---------------------------------------------------------------- ------------------------------------------------------------- Dollar Range of Equity Securities in the Portfolio Manager Fund Beneficially Owned ---------------------------------------------------------------- ------------------------------------------------------------- ---------------------------------------------------------------- ------------------------------------------------------------- Wayne M. Collette* None ---------------------------------------------------------------- ------------------------------------------------------------- ---------------------------------------------------------------- ------------------------------------------------------------- J. Michael Kosicki* None ---------------------------------------------------------------- ------------------------------------------------------------- ---------------------------------------------------------------- ------------------------------------------------------------- George J. Myers* None ---------------------------------------------------------------- ------------------------------------------------------------- ---------------------------------------------------------------- ------------------------------------------------------------- Theodore R. Wendell* None ---------------------------------------------------------------- -------------------------------------------------------------
3. The following language is added to the chart following the heading "Compensation" in the section MANAGEMENT - PORTFOLIO MANAGERS: ----------------------------- ---------------------------------------------------- ------------------------------------------- Portfolio Manager Performance Benchmark Peer Group ----------------------------- ---------------------------------------------------- ------------------------------------------- ----------------------------- ---------------------------------------------------- ------------------------------------------- Wayne M. Collette Russell Midcap Growth Tr Morningstar Mid Growth Category ----------------------------- ---------------------------------------------------- ------------------------------------------- ----------------------------- ---------------------------------------------------- ------------------------------------------- J. Michael Kosicki Russell Midcap Growth Tr Morningstar Mid Growth Category ----------------------------- ---------------------------------------------------- ------------------------------------------- ----------------------------- ---------------------------------------------------- ------------------------------------------- George J. Myers Russell Midcap Growth Tr Morningstar Mid Growth Category ----------------------------- ---------------------------------------------------- ------------------------------------------- ----------------------------- ---------------------------------------------------- ------------------------------------------- Theodore R. Wendell Russell Midcap Growth Tr Morningstar Mid Growth Category ----------------------------- ---------------------------------------------------- -------------------------------------------
* Information provided as of December 31, 2005. SUP-39/106123-0206 February 3, 2006 COLUMBIA MID CAP GROWTH FUND, INC. SUPPLEMENT TO THE CLASS R SHARE STATEMENT OF ADDITIONAL INFORMATION DATED JANUARY 23, 2006 1. The following language is added to the chart following the heading "Other Accounts Managed By Portfolio Managers" in the section MANAGEMENT - PORTFOLIO MANAGERS: ---------------------------------- -------------------------------- ---------------------------- ------------------------------- Other SEC-registered open-end and closed-end funds Other pooled investment Portfolio Manager vehicles Other accounts ---------------------------------- -------------------------------- ---------------------------- ------------------------------- ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- Number of Assets Number of Assets Number of Assets accounts accounts accounts ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- Wayne M. Collette* 9 $533 million 1 $8 million 23 $465 million ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- J. Michael Kosicki* 7 $318 million 1 $8 million 27 $465 million ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- George J. Myers* 7 $318 million 1 $8 million 26 $465 million ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ---------------- Theodore R. Wendell* 9 $533 million 1 $8 million 29 $465 million ---------------------------------- ---------------- --------------- -------------- ------------- -------------- ----------------
2. The following language is added to the chart following the heading "Ownership of Securities" in the section MANAGEMENT - PORTFOLIO MANAGERS: ---------------------------------------------------------------- ------------------------------------------------------------- Dollar Range of Equity Securities in the Portfolio Manager Fund Beneficially Owned ---------------------------------------------------------------- ------------------------------------------------------------- ---------------------------------------------------------------- ------------------------------------------------------------- Wayne M. Collette* None ---------------------------------------------------------------- ------------------------------------------------------------- ---------------------------------------------------------------- ------------------------------------------------------------- J. Michael Kosicki* None ---------------------------------------------------------------- ------------------------------------------------------------- ---------------------------------------------------------------- ------------------------------------------------------------- George J. Myers* None ---------------------------------------------------------------- ------------------------------------------------------------- ---------------------------------------------------------------- ------------------------------------------------------------- Theodore R. Wendell* None ---------------------------------------------------------------- -------------------------------------------------------------
3. The following language is added to the chart following the heading "Compensation" in the section MANAGEMENT - PORTFOLIO MANAGERS: ----------------------------- ---------------------------------------------------- ------------------------------------------- Portfolio Manager Performance Benchmark Peer Group ----------------------------- ---------------------------------------------------- ------------------------------------------- ----------------------------- ---------------------------------------------------- ------------------------------------------- Wayne M. Collette Russell Midcap Growth Tr Morningstar Mid Growth Category ----------------------------- ---------------------------------------------------- ------------------------------------------- ----------------------------- ---------------------------------------------------- ------------------------------------------- J. Michael Kosicki Russell Midcap Growth Tr Morningstar Mid Growth Category ----------------------------- ---------------------------------------------------- ------------------------------------------- ----------------------------- ---------------------------------------------------- ------------------------------------------- George J. Myers Russell Midcap Growth Tr Morningstar Mid Growth Category ----------------------------- ---------------------------------------------------- ------------------------------------------- ----------------------------- ---------------------------------------------------- ------------------------------------------- Theodore R. Wendell Russell Midcap Growth Tr Morningstar Mid Growth Category ----------------------------- ---------------------------------------------------- -------------------------------------------
* Information provided as of December 31, 2005. SUP-39/106224-0206 February 3, 2006