Class A

This semi-annual shareholder report contains important information about Columbia Balanced Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class A	$46	0.91%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.91%

^[1]

997

Key Fund Statistics

Table Summary
Fund net assets	$10,092,310,655
Total number of portfolio holdings	997
Portfolio turnover for the reporting period	46%
Portfolio turnover as of the end of the period excluding transactions in to be announced securities	25%

Top Holdings

Table Summary
NVIDIA Corp.	4.8%
Apple, Inc.	3.7%
Microsoft Corp.	3.6%
iShares Core MSCI EAFE ETF	2.9%
Amazon.com, Inc.	2.7%
Alphabet, Inc., Class A	1.9%
Eli Lilly & Co.	1.6%
Broadcom, Inc.	1.6%
Alphabet, Inc., Class C	1.6%
Meta Platforms, Inc., Class A	1.5%

Columbia Balanced Fund

CBLCX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 84

$ 10,092,310,655

46.00%

Equity Sector Allocation

Table Summary
Information Technology	19.7%
Communication Services	7.6%
Financials	7.5%
Health Care	6.5%
Consumer Discretionary	6.1%
Industrials	6.0%
Energy	2.4%
Consumer Staples	1.5%
Utilities	1.4%
Real Estate	0.8%
Other	0.3%

Asset Categories

Table Summary
Common Stocks		59.8%
Residential Mortgage-Backed Securities - Agency		13.5%
Corporate Bonds & Notes		8.2%
Residential Mortgage-Backed Securities - Non-Agency		7.7%
Asset-Backed Securities - Non-Agency		4.4%
Money Market Funds		3.5%
Exchange-Traded Equity Funds		2.9%
Commercial Mortgage-Backed Securities - Non-Agency		1.5%
Other		0.4%

Class R

This semi-annual shareholder report contains important information about Columbia Balanced Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class R	$59	1.16%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.16%

^[3]

997

Key Fund Statistics

Table Summary
Fund net assets	$10,092,310,655
Total number of portfolio holdings	997
Portfolio turnover for the reporting period	46%
Portfolio turnover as of the end of the period excluding transactions in to be announced securities	25%

Top Holdings

Table Summary
NVIDIA Corp.	4.8%
Apple, Inc.	3.7%
Microsoft Corp.	3.6%
iShares Core MSCI EAFE ETF	2.9%
Amazon.com, Inc.	2.7%
Alphabet, Inc., Class A	1.9%
Eli Lilly & Co.	1.6%
Broadcom, Inc.	1.6%
Alphabet, Inc., Class C	1.6%
Meta Platforms, Inc., Class A	1.5%

Columbia Balanced Fund

CBABX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 33

$ 10,092,310,655

46.00%

Equity Sector Allocation

Table Summary
Information Technology	19.7%
Communication Services	7.6%
Financials	7.5%
Health Care	6.5%
Consumer Discretionary	6.1%
Industrials	6.0%
Energy	2.4%
Consumer Staples	1.5%
Utilities	1.4%
Real Estate	0.8%
Other	0.3%

Asset Categories

Table Summary
Common Stocks		59.8%
Residential Mortgage-Backed Securities - Agency		13.5%
Corporate Bonds & Notes		8.2%
Residential Mortgage-Backed Securities - Non-Agency		7.7%
Asset-Backed Securities - Non-Agency		4.4%
Money Market Funds		3.5%
Exchange-Traded Equity Funds		2.9%
Commercial Mortgage-Backed Securities - Non-Agency		1.5%
Other		0.4%

Institutional 2 Class

This semi-annual shareholder report contains important information about Columbia Balanced Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 2 Class	$32	0.63%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.63%

^[5]

997

Key Fund Statistics

Table Summary
Fund net assets	$10,092,310,655
Total number of portfolio holdings	997
Portfolio turnover for the reporting period	46%
Portfolio turnover as of the end of the period excluding transactions in to be announced securities	25%

Top Holdings

Table Summary
NVIDIA Corp.	4.8%
Apple, Inc.	3.7%
Microsoft Corp.	3.6%
iShares Core MSCI EAFE ETF	2.9%
Amazon.com, Inc.	2.7%
Alphabet, Inc., Class A	1.9%
Eli Lilly & Co.	1.6%
Broadcom, Inc.	1.6%
Alphabet, Inc., Class C	1.6%
Meta Platforms, Inc., Class A	1.5%

Columbia Balanced Fund

CBDYX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 29

$ 10,092,310,655

46.00%

Equity Sector Allocation

Table Summary
Information Technology	19.7%
Communication Services	7.6%
Financials	7.5%
Health Care	6.5%
Consumer Discretionary	6.1%
Industrials	6.0%
Energy	2.4%
Consumer Staples	1.5%
Utilities	1.4%
Real Estate	0.8%
Other	0.3%

Asset Categories

Table Summary
Common Stocks		59.8%
Residential Mortgage-Backed Securities - Agency		13.5%
Corporate Bonds & Notes		8.2%
Residential Mortgage-Backed Securities - Non-Agency		7.7%
Asset-Backed Securities - Non-Agency		4.4%
Money Market Funds		3.5%
Exchange-Traded Equity Funds		2.9%
Commercial Mortgage-Backed Securities - Non-Agency		1.5%
Other		0.4%

Institutional Class

This semi-annual shareholder report contains important information about Columbia Balanced Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional Class	$33	0.66%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.66%

^[7]

997

Key Fund Statistics

Table Summary
Fund net assets	$10,092,310,655
Total number of portfolio holdings	997
Portfolio turnover for the reporting period	46%
Portfolio turnover as of the end of the period excluding transactions in to be announced securities	25%

Top Holdings

Table Summary
NVIDIA Corp.	4.8%
Apple, Inc.	3.7%
Microsoft Corp.	3.6%
iShares Core MSCI EAFE ETF	2.9%
Amazon.com, Inc.	2.7%
Alphabet, Inc., Class A	1.9%
Eli Lilly & Co.	1.6%
Broadcom, Inc.	1.6%
Alphabet, Inc., Class C	1.6%
Meta Platforms, Inc., Class A	1.5%

Columbia Contrarian Core Fund

LCCAX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 50

$ 16,187,872,349

27.00%

Equity Sector Allocation

Table Summary
Information Technology	32.4%
Communication Services	12.5%
Financials	12.3%
Health Care	10.7%
Consumer Discretionary	10.0%
Industrials	9.8%
Energy	3.8%
Consumer Staples	2.4%
Utilities	2.3%
Real Estate	1.3%
Other	0.5%

Asset Categories

Table Summary
Common Stocks		98.0%
Money Market Funds		1.4%

Class C

This semi-annual shareholder report contains important information about Columbia Contrarian Core Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class C	$87	1.73%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.73%

^[9]

78

Key Fund Statistics

Table Summary
Fund net assets	$16,187,872,349
Total number of portfolio holdings	78
Portfolio turnover for the reporting period	27%

Top Holdings

Table Summary
NVIDIA Corp.	7.9%
Apple, Inc.	6.1%
Microsoft Corp.	6.0%
Amazon.com, Inc.	4.4%
Alphabet, Inc., Class A	3.2%
Eli Lilly & Co.	2.7%
Broadcom, Inc.	2.6%
Alphabet, Inc., Class C	2.6%
Meta Platforms, Inc., Class A	2.4%
Honeywell International, Inc.	2.2%

Columbia Contrarian Core Fund

CCCRX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 62

$ 16,187,872,349

27.00%

Equity Sector Allocation

Table Summary
Information Technology	32.4%
Communication Services	12.5%
Financials	12.3%
Health Care	10.7%
Consumer Discretionary	10.0%
Industrials	9.8%
Energy	3.8%
Consumer Staples	2.4%
Utilities	2.3%
Real Estate	1.3%
Other	0.5%

Asset Categories

Table Summary
Common Stocks		98.0%
Money Market Funds		1.4%

Class S

This semi-annual shareholder report contains important information about Columbia Contrarian Core Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class S	$37	0.73%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.73%

^[11]

78

Key Fund Statistics

Table Summary
Fund net assets	$16,187,872,349
Total number of portfolio holdings	78
Portfolio turnover for the reporting period	27%

Top Holdings

Table Summary
NVIDIA Corp.	7.9%
Apple, Inc.	6.1%
Microsoft Corp.	6.0%
Amazon.com, Inc.	4.4%
Alphabet, Inc., Class A	3.2%
Eli Lilly & Co.	2.7%
Broadcom, Inc.	2.6%
Alphabet, Inc., Class C	2.6%
Meta Platforms, Inc., Class A	2.4%
Honeywell International, Inc.	2.2%

Columbia Contrarian Core Fund

COFRX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 33

$ 16,187,872,349

27.00%

Equity Sector Allocation

Table Summary
Information Technology	32.4%
Communication Services	12.5%
Financials	12.3%
Health Care	10.7%
Consumer Discretionary	10.0%
Industrials	9.8%
Energy	3.8%
Consumer Staples	2.4%
Utilities	2.3%
Real Estate	1.3%
Other	0.5%

Asset Categories

Table Summary
Common Stocks		98.0%
Money Market Funds		1.4%

Institutional 3 Class

This semi-annual shareholder report contains important information about Columbia Contrarian Core Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 3 Class	$31	0.61%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.61%

^[13]

78

Key Fund Statistics

Table Summary
Fund net assets	$16,187,872,349
Total number of portfolio holdings	78
Portfolio turnover for the reporting period	27%

Top Holdings

Table Summary
NVIDIA Corp.	7.9%
Apple, Inc.	6.1%
Microsoft Corp.	6.0%
Amazon.com, Inc.	4.4%
Alphabet, Inc., Class A	3.2%
Eli Lilly & Co.	2.7%
Broadcom, Inc.	2.6%
Alphabet, Inc., Class C	2.6%
Meta Platforms, Inc., Class A	2.4%
Honeywell International, Inc.	2.2%

Columbia Contrarian Core Fund

SMGIX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 37

$ 16,187,872,349

27.00%

Equity Sector Allocation

Table Summary
Information Technology	32.4%
Communication Services	12.5%
Financials	12.3%
Health Care	10.7%
Consumer Discretionary	10.0%
Industrials	9.8%
Energy	3.8%
Consumer Staples	2.4%
Utilities	2.3%
Real Estate	1.3%
Other	0.5%

Asset Categories

Table Summary
Common Stocks		98.0%
Money Market Funds		1.4%

Class A

This semi-annual shareholder report contains important information about Columbia Emerging Markets Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class A	$80	1.41%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.41%

^[15]

92

Key Fund Statistics

Table Summary
Fund net assets	$846,386,686
Total number of portfolio holdings	92
Portfolio turnover for the reporting period	25%

Top Holdings

Table Summary
Taiwan Semiconductor Manufacturing Co., Ltd.	14.3%
Samsung Electronics Co., Ltd.	7.7%
SK Hynix, Inc.	6.0%
Tencent Holdings Ltd.	4.3%
Alibaba Group Holding Ltd.	3.2%
NU Holdings Ltd., Class A	2.4%
Accton Technology Corp.	2.2%
Capitec Bank Holdings Ltd.	2.2%
Unimicron Technology Corp.	2.1%
Anglogold Ashanti PLC	1.7%

Columbia Emerging Markets Fund

EEMCX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 123

$ 846,386,686

25.00%

Geographic Allocation

Table Summary
Taiwan	25.7%
China	21.7%
South Korea	21.5%
India	6.8%
Brazil	6.1%
Greece	4.3%
South Africa	3.4%
United Arab Emirates	2.9%
United Kingdom	1.7%
Hong Kong	1.1%
Other	5.3%

Equity Sector Allocation

Table Summary
Information Technology	40.3%
Financials	18.3%
Industrials	9.4%
Consumer Discretionary	8.7%
Communication Services	6.8%
Materials	4.9%
Real Estate	4.3%
Health Care	2.7%
Consumer Staples	2.1%
Energy	1.6%
Other	1.1%

Class S

This semi-annual shareholder report contains important information about Columbia Emerging Markets Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class S	$66	1.16%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.16%

^[17]

92

Key Fund Statistics

Table Summary
Fund net assets	$846,386,686
Total number of portfolio holdings	92
Portfolio turnover for the reporting period	25%

Top Holdings

Table Summary
Taiwan Semiconductor Manufacturing Co., Ltd.	14.3%
Samsung Electronics Co., Ltd.	7.7%
SK Hynix, Inc.	6.0%
Tencent Holdings Ltd.	4.3%
Alibaba Group Holding Ltd.	3.2%
NU Holdings Ltd., Class A	2.4%
Accton Technology Corp.	2.2%
Capitec Bank Holdings Ltd.	2.2%
Unimicron Technology Corp.	2.1%
Anglogold Ashanti PLC	1.7%

Columbia Emerging Markets Fund

CEKRX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 61

$ 846,386,686

25.00%

Geographic Allocation

Table Summary
Taiwan	25.7%
China	21.7%
South Korea	21.5%
India	6.8%
Brazil	6.1%
Greece	4.3%
South Africa	3.4%
United Arab Emirates	2.9%
United Kingdom	1.7%
Hong Kong	1.1%
Other	5.3%

Equity Sector Allocation

Table Summary
Information Technology	40.3%
Financials	18.3%
Industrials	9.4%
Consumer Discretionary	8.7%
Communication Services	6.8%
Materials	4.9%
Real Estate	4.3%
Health Care	2.7%
Consumer Staples	2.1%
Energy	1.6%
Other	1.1%

Institutional 3 Class

This semi-annual shareholder report contains important information about Columbia Emerging Markets Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 3 Class	$58	1.02%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.02%

^[19]

92

Key Fund Statistics

Table Summary
Fund net assets	$846,386,686
Total number of portfolio holdings	92
Portfolio turnover for the reporting period	25%

Top Holdings

Table Summary
Taiwan Semiconductor Manufacturing Co., Ltd.	14.3%
Samsung Electronics Co., Ltd.	7.7%
SK Hynix, Inc.	6.0%
Tencent Holdings Ltd.	4.3%
Alibaba Group Holding Ltd.	3.2%
NU Holdings Ltd., Class A	2.4%
Accton Technology Corp.	2.2%
Capitec Bank Holdings Ltd.	2.2%
Unimicron Technology Corp.	2.1%
Anglogold Ashanti PLC	1.7%

Columbia Emerging Markets Fund

UMEMX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 66

$ 846,386,686

25.00%

Geographic Allocation

Table Summary
Taiwan	25.7%
China	21.7%
South Korea	21.5%
India	6.8%
Brazil	6.1%
Greece	4.3%
South Africa	3.4%
United Arab Emirates	2.9%
United Kingdom	1.7%
Hong Kong	1.1%
Other	5.3%

Equity Sector Allocation

Table Summary
Information Technology	40.3%
Financials	18.3%
Industrials	9.4%
Consumer Discretionary	8.7%
Communication Services	6.8%
Materials	4.9%
Real Estate	4.3%
Health Care	2.7%
Consumer Staples	2.1%
Energy	1.6%
Other	1.1%

Class A

This semi-annual shareholder report contains important information about Columbia Global Technology Growth Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class A	$59	1.14%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.14%

^[21]

100

Key Fund Statistics

Table Summary
Fund net assets	$4,445,592,450
Total number of portfolio holdings	100
Portfolio turnover for the reporting period	5%

Top Holdings

Table Summary
NVIDIA Corp.	14.9%
Broadcom, Inc.	8.2%
Apple, Inc.	7.9%
Microsoft Corp.	6.4%
Lam Research Corp.	6.3%
Alphabet, Inc., Class A	4.4%
Taiwan Semiconductor Manufacturing Co., Ltd., ADR	4.2%
Micron Technology, Inc.	3.1%
Amazon.com, Inc.	2.7%
ASML Holding NV	2.7%

Columbia Global Technology Growth Fund

CTHCX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 98

$ 4,445,592,450

5.00%

Information Technology Sub-Industry Allocation

Table Summary
Semiconductors	35.6%
Semiconductor Materials & Equipment	11.8%
Technology Hardware, Storage & Peripherals	11.1%
Systems Software	9.0%
Application Software	4.8%
Communications Equipment	2.6%
Internet Services & Infrastructure	1.8%
Electronic Components	1.5%
Other	1.7%

Equity Sector Allocation

Table Summary
Information Technology	79.9%
Communication Services	9.5%
Financials	3.8%
Consumer Discretionary	3.8%
Industrials	1.5%
Real Estate	0.1%

Class S

This semi-annual shareholder report contains important information about Columbia Global Technology Growth Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class S	$46	0.89%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.89%

^[23]

100

Key Fund Statistics

Table Summary
Fund net assets	$4,445,592,450
Total number of portfolio holdings	100
Portfolio turnover for the reporting period	5%

Top Holdings

Table Summary
NVIDIA Corp.	14.9%
Broadcom, Inc.	8.2%
Apple, Inc.	7.9%
Microsoft Corp.	6.4%
Lam Research Corp.	6.3%
Alphabet, Inc., Class A	4.4%
Taiwan Semiconductor Manufacturing Co., Ltd., ADR	4.2%
Micron Technology, Inc.	3.1%
Amazon.com, Inc.	2.7%
ASML Holding NV	2.7%

Columbia Global Technology Growth Fund

CTHRX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 44

$ 4,445,592,450

5.00%

Information Technology Sub-Industry Allocation

Table Summary
Semiconductors	35.6%
Semiconductor Materials & Equipment	11.8%
Technology Hardware, Storage & Peripherals	11.1%
Systems Software	9.0%
Application Software	4.8%
Communications Equipment	2.6%
Internet Services & Infrastructure	1.8%
Electronic Components	1.5%
Other	1.7%

Equity Sector Allocation

Table Summary
Information Technology	79.9%
Communication Services	9.5%
Financials	3.8%
Consumer Discretionary	3.8%
Industrials	1.5%
Real Estate	0.1%

Institutional 3 Class

This semi-annual shareholder report contains important information about Columbia Global Technology Growth Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 3 Class	$41	0.80%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.80%

^[25]

100

Key Fund Statistics

Table Summary
Fund net assets	$4,445,592,450
Total number of portfolio holdings	100
Portfolio turnover for the reporting period	5%

Top Holdings

Table Summary
NVIDIA Corp.	14.9%
Broadcom, Inc.	8.2%
Apple, Inc.	7.9%
Microsoft Corp.	6.4%
Lam Research Corp.	6.3%
Alphabet, Inc., Class A	4.4%
Taiwan Semiconductor Manufacturing Co., Ltd., ADR	4.2%
Micron Technology, Inc.	3.1%
Amazon.com, Inc.	2.7%
ASML Holding NV	2.7%

Columbia Global Technology Growth Fund

CMTFX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 47

$ 4,445,592,450

5.00%

Information Technology Sub-Industry Allocation

Table Summary
Semiconductors	35.6%
Semiconductor Materials & Equipment	11.8%
Technology Hardware, Storage & Peripherals	11.1%
Systems Software	9.0%
Application Software	4.8%
Communications Equipment	2.6%
Internet Services & Infrastructure	1.8%
Electronic Components	1.5%
Other	1.7%

Equity Sector Allocation

Table Summary
Information Technology	79.9%
Communication Services	9.5%
Financials	3.8%
Consumer Discretionary	3.8%
Industrials	1.5%
Real Estate	0.1%

Class A

This semi-annual shareholder report contains important information about Columbia Greater China Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class A	$72	1.46%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.46%

^[27]

62

Key Fund Statistics

Table Summary
Fund net assets	$48,253,925
Total number of portfolio holdings	62
Portfolio turnover for the reporting period	27%

Top Holdings

Table Summary
Tencent Holdings Ltd.	16.6%
Alibaba Group Holding Ltd.	12.5%
China Construction Bank Corp., Class H	5.4%
Ping An Insurance Group Co. of China Ltd., Class H	4.0%
Zijin Mining Group Co., Ltd., Class H	3.8%
Contemporary Amperex Technology Co., Ltd., Class A	3.2%
PDD Holdings, Inc., ADR	3.2%
Taiwan Semiconductor Manufacturing Co., Ltd.	3.1%
Sieyuan Electric Co., Ltd., Class A	2.7%
NetEase, Inc.	2.3%

Columbia Greater China Fund

CGCYX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 54

$ 48,253,925

27.00%

Equity Sector Allocation

Table Summary
Consumer Discretionary	23.3%
Communication Services	22.6%
Financials	14.8%
Information Technology	11.6%
Industrials	10.7%
Materials	7.3%
Health Care	4.3%
Real Estate	3.3%
Consumer Staples	1.3%
Energy	0.5%

Asset Categories

Table Summary
Common Stocks		99.7%
Other		0.5%

Institutional Class

This semi-annual shareholder report contains important information about Columbia Greater China Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional Class	$60	1.21%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.21%

^[29]

62

Key Fund Statistics

Table Summary
Fund net assets	$48,253,925
Total number of portfolio holdings	62
Portfolio turnover for the reporting period	27%

Top Holdings

Table Summary
Tencent Holdings Ltd.	16.6%
Alibaba Group Holding Ltd.	12.5%
China Construction Bank Corp., Class H	5.4%
Ping An Insurance Group Co. of China Ltd., Class H	4.0%
Zijin Mining Group Co., Ltd., Class H	3.8%
Contemporary Amperex Technology Co., Ltd., Class A	3.2%
PDD Holdings, Inc., ADR	3.2%
Taiwan Semiconductor Manufacturing Co., Ltd.	3.1%
Sieyuan Electric Co., Ltd., Class A	2.7%
NetEase, Inc.	2.3%

Columbia International Dividend Income Fund

CSVAX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 66

$ 698,810,850

3.00%

Geographic Allocation

Table Summary
Japan	15.0%
United States	12.3%
United Kingdom	9.0%
Germany	8.7%
France	8.3%
Canada	8.2%
Switzerland	7.0%
South Korea	6.1%
Taiwan	5.0%
Spain	3.8%
Other	16.1%

Equity Sector Allocation

Table Summary
Financials	22.2%
Information Technology	17.4%
Industrials	11.9%
Health Care	9.8%
Materials	8.4%
Communication Services	7.1%
Consumer Staples	6.0%
Consumer Discretionary	5.9%
Energy	5.6%
Utilities	4.7%

Class S

This semi-annual shareholder report contains important information about Columbia International Dividend Income Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class S	$52	0.93%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.93%

^[31]

60

Key Fund Statistics

Table Summary
Fund net assets	$698,810,850
Total number of portfolio holdings	60
Portfolio turnover for the reporting period	3%

Top Holdings

Table Summary
Samsung Electronics Co., Ltd.	6.1%
Taiwan Semiconductor Manufacturing Co., Ltd.	5.0%
Tokyo Electron Ltd.	3.0%
Roche Holding AG, Genusschein Shares	2.7%
BNP Paribas SA	2.6%
Iberdrola SA	2.5%
Anglo American PLC	2.4%
GSK PLC	2.3%
Royal Bank of Canada	2.3%
ORIX Corp.	2.2%

Columbia International Dividend Income Fund

CADPX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 45

$ 698,810,850

3.00%

Geographic Allocation

Table Summary
Japan	15.0%
United States	12.3%
United Kingdom	9.0%
Germany	8.7%
France	8.3%
Canada	8.2%
Switzerland	7.0%
South Korea	6.1%
Taiwan	5.0%
Spain	3.8%
Other	16.1%

Equity Sector Allocation

Table Summary
Financials	22.2%
Information Technology	17.4%
Industrials	11.9%
Health Care	9.8%
Materials	8.4%
Communication Services	7.1%
Consumer Staples	6.0%
Consumer Discretionary	5.9%
Energy	5.6%
Utilities	4.7%

Institutional 3 Class

This semi-annual shareholder report contains important information about Columbia International Dividend Income Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 3 Class	$43	0.76%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.76%

^[33]

60

Key Fund Statistics

Table Summary
Fund net assets	$698,810,850
Total number of portfolio holdings	60
Portfolio turnover for the reporting period	3%

Top Holdings

Table Summary
Samsung Electronics Co., Ltd.	6.1%
Taiwan Semiconductor Manufacturing Co., Ltd.	5.0%
Tokyo Electron Ltd.	3.0%
Roche Holding AG, Genusschein Shares	2.7%
BNP Paribas SA	2.6%
Iberdrola SA	2.5%
Anglo American PLC	2.4%
GSK PLC	2.3%
Royal Bank of Canada	2.3%
ORIX Corp.	2.2%

Columbia International Dividend Income Fund

CSVFX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 52

$ 698,810,850

3.00%

Geographic Allocation

Table Summary
Japan	15.0%
United States	12.3%
United Kingdom	9.0%
Germany	8.7%
France	8.3%
Canada	8.2%
Switzerland	7.0%
South Korea	6.1%
Taiwan	5.0%
Spain	3.8%
Other	16.1%

Equity Sector Allocation

Table Summary
Financials	22.2%
Information Technology	17.4%
Industrials	11.9%
Health Care	9.8%
Materials	8.4%
Communication Services	7.1%
Consumer Staples	6.0%
Consumer Discretionary	5.9%
Energy	5.6%
Utilities	4.7%

Class A

This semi-annual shareholder report contains important information about Columbia Select Mid Cap Growth Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class A	$56	1.11%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.11%

^[35]

69

Key Fund Statistics

Table Summary
Fund net assets	$1,980,350,091
Total number of portfolio holdings	69
Portfolio turnover for the reporting period	101%

Top Holdings

Table Summary
Vertiv Holdings Co.	4.6%
Howmet Aerospace, Inc.	3.4%
Take-Two Interactive Software, Inc.	2.9%
Comfort Systems U.S.A., Inc.	2.3%
Cloudflare, Inc.	2.3%
Celsius Holdings, Inc.	2.2%
Tapestry, Inc.	2.2%
Casey's General Stores, Inc.	2.2%
SharkNinja, Inc.	2.1%
Carpenter Technology Corp.	2.1%

Columbia Select Mid Cap Growth Fund

CMCCX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 94

$ 1,980,350,091

101.00%

Equity Sector Allocation

Table Summary
Industrials	30.4%
Consumer Discretionary	16.6%
Information Technology	13.7%
Health Care	11.5%
Communication Services	9.1%
Consumer Staples	4.4%
Materials	3.4%
Energy	3.2%
Utilities	2.0%
Financials	1.4%

Asset Categories

Table Summary
Common Stocks		95.7%
Money Market Funds		4.1%

Class S

This semi-annual shareholder report contains important information about Columbia Select Mid Cap Growth Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class S	$43	0.86%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.86%

^[37]

69

Key Fund Statistics

Table Summary
Fund net assets	$1,980,350,091
Total number of portfolio holdings	69
Portfolio turnover for the reporting period	101%

Top Holdings

Table Summary
Vertiv Holdings Co.	4.6%
Howmet Aerospace, Inc.	3.4%
Take-Two Interactive Software, Inc.	2.9%
Comfort Systems U.S.A., Inc.	2.3%
Cloudflare, Inc.	2.3%
Celsius Holdings, Inc.	2.2%
Tapestry, Inc.	2.2%
Casey's General Stores, Inc.	2.2%
SharkNinja, Inc.	2.1%
Carpenter Technology Corp.	2.1%

Columbia Select Mid Cap Growth Fund

CMGVX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 42

$ 1,980,350,091

101.00%

Equity Sector Allocation

Table Summary
Industrials	30.4%
Consumer Discretionary	16.6%
Information Technology	13.7%
Health Care	11.5%
Communication Services	9.1%
Consumer Staples	4.4%
Materials	3.4%
Energy	3.2%
Utilities	2.0%
Financials	1.4%

Asset Categories

Table Summary
Common Stocks		95.7%
Money Market Funds		4.1%

Institutional 3 Class

This semi-annual shareholder report contains important information about Columbia Select Mid Cap Growth Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 3 Class	$39	0.78%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.78%

^[39]

69

Key Fund Statistics

Table Summary
Fund net assets	$1,980,350,091
Total number of portfolio holdings	69
Portfolio turnover for the reporting period	101%

Top Holdings

Table Summary
Vertiv Holdings Co.	4.6%
Howmet Aerospace, Inc.	3.4%
Take-Two Interactive Software, Inc.	2.9%
Comfort Systems U.S.A., Inc.	2.3%
Cloudflare, Inc.	2.3%
Celsius Holdings, Inc.	2.2%
Tapestry, Inc.	2.2%
Casey's General Stores, Inc.	2.2%
SharkNinja, Inc.	2.1%
Carpenter Technology Corp.	2.1%

Columbia Select Mid Cap Growth Fund

CLSPX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 43

$ 1,980,350,091

101.00%

Equity Sector Allocation

Table Summary
Industrials	30.4%
Consumer Discretionary	16.6%
Information Technology	13.7%
Health Care	11.5%
Communication Services	9.1%
Consumer Staples	4.4%
Materials	3.4%
Energy	3.2%
Utilities	2.0%
Financials	1.4%

Asset Categories

Table Summary
Common Stocks		95.7%
Money Market Funds		4.1%

Class A

This semi-annual shareholder report contains important information about Columbia Small Cap Growth Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class A	$63	1.19%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.19%

^[41]

107

Key Fund Statistics

Table Summary
Fund net assets	$3,195,850,010
Total number of portfolio holdings	107
Portfolio turnover for the reporting period	78%

Top Holdings

Table Summary
Celsius Holdings, Inc.	2.6%
RBC Bearings, Inc.	2.4%
Lumentum Holdings, Inc.	2.3%
Carpenter Technology Corp.	2.2%
InterDigital, Inc.	2.2%
ICU Medical, Inc.	2.2%
WESCO International, Inc.	2.2%
Bloom Energy Corp., Class A	2.1%
SiteOne Landscape Supply, Inc.	2.1%
Mercury Systems, Inc.	2.1%

Columbia Small Cap Growth Fund

CGOCX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 102

$ 3,195,850,010

78.00%

Equity Sector Allocation

Table Summary
Industrials	29.4%
Health Care	19.3%
Information Technology	17.8%
Consumer Discretionary	10.5%
Consumer Staples	6.2%
Financials	4.8%
Energy	4.7%
Communication Services	3.7%
Materials	1.7%
Utilities	0.5%

Asset Categories

Table Summary
Common Stocks		98.6%
Money Market Funds		1.2%

Class R

This semi-annual shareholder report contains important information about Columbia Small Cap Growth Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class R	$76	1.44%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.44%

^[43]

107

Key Fund Statistics

Table Summary
Fund net assets	$3,195,850,010
Total number of portfolio holdings	107
Portfolio turnover for the reporting period	78%

Top Holdings

Table Summary
Celsius Holdings, Inc.	2.6%
RBC Bearings, Inc.	2.4%
Lumentum Holdings, Inc.	2.3%
Carpenter Technology Corp.	2.2%
InterDigital, Inc.	2.2%
ICU Medical, Inc.	2.2%
WESCO International, Inc.	2.2%
Bloom Energy Corp., Class A	2.1%
SiteOne Landscape Supply, Inc.	2.1%
Mercury Systems, Inc.	2.1%

Columbia Small Cap Growth Fund

CMSHX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 50

$ 3,195,850,010

78.00%

Equity Sector Allocation

Table Summary
Industrials	29.4%
Health Care	19.3%
Information Technology	17.8%
Consumer Discretionary	10.5%
Consumer Staples	6.2%
Financials	4.8%
Energy	4.7%
Communication Services	3.7%
Materials	1.7%
Utilities	0.5%

Asset Categories

Table Summary
Common Stocks		98.6%
Money Market Funds		1.2%

Institutional 2 Class

This semi-annual shareholder report contains important information about Columbia Small Cap Growth Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 2 Class	$46	0.87%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.87%

^[45]

107

Key Fund Statistics

Table Summary
Fund net assets	$3,195,850,010
Total number of portfolio holdings	107
Portfolio turnover for the reporting period	78%

Top Holdings

Table Summary
Celsius Holdings, Inc.	2.6%
RBC Bearings, Inc.	2.4%
Lumentum Holdings, Inc.	2.3%
Carpenter Technology Corp.	2.2%
InterDigital, Inc.	2.2%
ICU Medical, Inc.	2.2%
WESCO International, Inc.	2.2%
Bloom Energy Corp., Class A	2.1%
SiteOne Landscape Supply, Inc.	2.1%
Mercury Systems, Inc.	2.1%

Columbia Small Cap Growth Fund

CSGYX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 43

$ 3,195,850,010

78.00%

Equity Sector Allocation

Table Summary
Industrials	29.4%
Health Care	19.3%
Information Technology	17.8%
Consumer Discretionary	10.5%
Consumer Staples	6.2%
Financials	4.8%
Energy	4.7%
Communication Services	3.7%
Materials	1.7%
Utilities	0.5%

Asset Categories

Table Summary
Common Stocks		98.6%
Money Market Funds		1.2%

Institutional Class

This semi-annual shareholder report contains important information about Columbia Small Cap Growth Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional Class	$50	0.94%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.94%

^[47]

107

Key Fund Statistics

Table Summary
Fund net assets	$3,195,850,010
Total number of portfolio holdings	107
Portfolio turnover for the reporting period	78%

Top Holdings

Table Summary
Celsius Holdings, Inc.	2.6%
RBC Bearings, Inc.	2.4%
Lumentum Holdings, Inc.	2.3%
Carpenter Technology Corp.	2.2%
InterDigital, Inc.	2.2%
ICU Medical, Inc.	2.2%
WESCO International, Inc.	2.2%
Bloom Energy Corp., Class A	2.1%
SiteOne Landscape Supply, Inc.	2.1%
Mercury Systems, Inc.	2.1%

Columbia Strategic Income Fund

COSIX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 47

$ 6,052,085,197

124.00%

Derivative Exposure

Table Summary
	Long
Credit Risk	2.7%
Foreign Exchange Risk	1.6%
Interest Rate Risk	54.5%
	Short
Credit Risk	0.7%
Foreign Exchange Risk	1.6%
Interest Rate Risk	64.2%

Asset Categories

Table Summary
Corporate Bonds & Notes		37.2%
Residential Mortgage-Backed Securities - Agency		30.9%
Foreign Government Obligations		11.6%
Senior Loans		10.5%
Asset-Backed Securities - Non-Agency		8.0%
Residential Mortgage-Backed Securities - Non-Agency		6.6%
Money Market Funds		6.1%
Other		2.6%

Class C

This semi-annual shareholder report contains important information about Columbia Strategic Income Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class C	$84	1.68%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

1.68%

^[49]

1,325

Key Fund Statistics

Table Summary
Fund net assets	$6,052,085,197
Total number of portfolio holdings	1,325
Portfolio turnover for the reporting period	124%
Portfolio turnover as of the end of the period excluding transactions in to be announced securities	28%

Columbia Strategic Income Fund

CSNRX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 59

$ 6,052,085,197

124.00%

Derivative Exposure

Table Summary
	Long
Credit Risk	2.7%
Foreign Exchange Risk	1.6%
Interest Rate Risk	54.5%
	Short
Credit Risk	0.7%
Foreign Exchange Risk	1.6%
Interest Rate Risk	64.2%

Asset Categories

Table Summary
Corporate Bonds & Notes		37.2%
Residential Mortgage-Backed Securities - Agency		30.9%
Foreign Government Obligations		11.6%
Senior Loans		10.5%
Asset-Backed Securities - Non-Agency		8.0%
Residential Mortgage-Backed Securities - Non-Agency		6.6%
Money Market Funds		6.1%
Other		2.6%

Class S

This semi-annual shareholder report contains important information about Columbia Strategic Income Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Class S	$34	0.68%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.68%

^[51]

1,325

Key Fund Statistics

Table Summary
Fund net assets	$6,052,085,197
Total number of portfolio holdings	1,325
Portfolio turnover for the reporting period	124%
Portfolio turnover as of the end of the period excluding transactions in to be announced securities	28%

Columbia Strategic Income Fund

CTIVX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 33

$ 6,052,085,197

124.00%

Derivative Exposure

Table Summary
	Long
Credit Risk	2.7%
Foreign Exchange Risk	1.6%
Interest Rate Risk	54.5%
	Short
Credit Risk	0.7%
Foreign Exchange Risk	1.6%
Interest Rate Risk	64.2%

Asset Categories

Table Summary
Corporate Bonds & Notes		37.2%
Residential Mortgage-Backed Securities - Agency		30.9%
Foreign Government Obligations		11.6%
Senior Loans		10.5%
Asset-Backed Securities - Non-Agency		8.0%
Residential Mortgage-Backed Securities - Non-Agency		6.6%
Money Market Funds		6.1%
Other		2.6%

Institutional 3 Class

This semi-annual shareholder report contains important information about Columbia Strategic Income Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional 3 Class	$30	0.60%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.60%

^[53]

1,325

Key Fund Statistics

Table Summary
Fund net assets	$6,052,085,197
Total number of portfolio holdings	1,325
Portfolio turnover for the reporting period	124%
Portfolio turnover as of the end of the period excluding transactions in to be announced securities	28%

Columbia Strategic Income Fund

LSIZX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 34

$ 6,052,085,197

124.00%

Derivative Exposure

Table Summary
	Long
Credit Risk	2.7%
Foreign Exchange Risk	1.6%
Interest Rate Risk	54.5%
	Short
Credit Risk	0.7%
Foreign Exchange Risk	1.6%
Interest Rate Risk	64.2%

Asset Categories

Table Summary
Corporate Bonds & Notes		37.2%
Residential Mortgage-Backed Securities - Agency		30.9%
Foreign Government Obligations		11.6%
Senior Loans		10.5%
Asset-Backed Securities - Non-Agency		8.0%
Residential Mortgage-Backed Securities - Non-Agency		6.6%
Money Market Funds		6.1%
Other		2.6%

Institutional Class

This semi-annual shareholder report contains important information about Multi-Manager Alternative Strategies Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

columbiathreadneedleus.com/resources/literature

$ 65

$ 621,302,045

74.00%

Derivative Exposure

Table Summary
	Long
Commodity-Related Investment Risk	7.9%
Equity Risk	13.2%
Foreign Exchange Risk	44.4%
Interest Rate Risk	38.1%
	Short
Commodity-Related Investment Risk	2.8%
Equity Risk	0.1%
Foreign Exchange Risk	24.1%
Interest Rate Risk	46.6%

Asset Categories

Table Summary
Money Market Funds		40.7%
Corporate Bonds & Notes		18.9%
Residential Mortgage-Backed Securities - Non-Agency		10.4%
Residential Mortgage-Backed Securities - Agency		9.5%
Foreign Government Obligations		6.3%
Commercial Mortgage-Backed Securities - Non-Agency		4.7%
Asset-Backed Securities - Non-Agency		3.9%
Senior Loans		2.5%
Other		3.5%

Institutional Class

This semi-annual shareholder report contains important information about Multi-Manager International Equity Strategies Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional Class	$49	0.91%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.91%

^[56]

621

Key Fund Statistics

Table Summary
Fund net assets	$3,189,364,985
Total number of portfolio holdings	621
Portfolio turnover for the reporting period	21%

Top Holdings

Table Summary
ASML Holding NV	2.3%
Kering SA	1.9%
Roche Holding AG, Genusschein Shares	1.7%
Renesas Electronics Corp.	1.7%
BNP Paribas SA	1.5%
AstraZeneca PLC	1.5%
Alstom SA	1.5%
SAP SE	1.4%
Infineon Technologies AG	1.4%
Barclays Bank PLC	1.3%

Multi-Manager Small Cap Equity Strategies Fund

CZMSX

You can find additional information about the Fund at columbiathreadneedleus.com/resources/literature. You can also request more information by contacting us at 1-800-345-6611.

columbiathreadneedleus.com/resources/literature

$ 50

$ 1,226,641,367

29.00%

Equity Sector Allocation

Table Summary
Industrials	25.1%
Financials	17.1%
Health Care	14.3%
Information Technology	12.6%
Consumer Discretionary	10.7%
Energy	5.2%
Materials	3.7%
Real Estate	3.4%
Consumer Staples	3.0%
Communication Services	1.9%
Other	1.6%

Asset Categories

Table Summary
Common Stocks		98.6%
Money Market Funds		1.4%

Institutional Class

This semi-annual shareholder report contains important information about Multi-Manager Total Return Bond Strategies Fund (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Class	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Institutional Class	$24	0.48%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.48%

^[58]

3,932

Key Fund Statistics

Table Summary
Fund net assets	$13,201,821,062
Total number of portfolio holdings	3,932
Portfolio turnover for the reporting period	115%

Multisector Bond SMA Completion Portfolio

This semi-annual shareholder report contains important information about Multisector Bond SMA Completion Portfolio (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Fund	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Multisector Bond SMA Completion Portfolio	$0	0.00%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.00%

^[59]

252

Key Fund Statistics

Table Summary
Fund net assets	$101,782,728
Total number of portfolio holdings	252
Portfolio turnover for the reporting period	279%

Overseas SMA Completion Portfolio

This semi-annual shareholder report contains important information about Overseas SMA Completion Portfolio (the Fund) for the period of September 1, 2025 to February 28, 2026.

1-800-345-6611

What were the Fund costs for the reporting period?

(Based on a hypothetical $10,000 investment)

Table Summary
Fund	Cost of a $10,000 investment	Cost paid as a percentage of a $10,000 investment
Overseas SMA Completion Portfolio	$0	0.00%^{Footnote Reference(a)}

Footnote	Description
Footnote^(a)	Annualized

0.00%

^[60]

45

Key Fund Statistics

Table Summary
Fund net assets	$18,240,063
Total number of portfolio holdings	45
Portfolio turnover for the reporting period	17%