William Blair Investment Management, LLC Columbia Banking System, Inc. Transaction History

William Blair Investment Management, LLC

$38.3 Billion
Q4 2024

A detailed history of William Blair Investment Management, LLC transactions in Columbia Banking System, Inc. stock. As of the latest transaction made, William Blair Investment Management, LLC holds 1,774,443 shares of COLB stock, worth $44.8 Million. This represents 0.13% of its overall portfolio holdings.

Number of Shares

1,774,443

Previous 1,731,916 2.46%

Holding current value

$44.8 Million

Previous $45.3 Million 5.91%

% of portfolio

0.13%

Previous 0.12%

19 transactions

Quarter	Operation	Price Per share	shares change	shares Held
Q4 2024 Feb 10, 2025	BUY	$25.29 - $32.01 $1.08 Million - $1.36 Million	42,527 Added 2.46%	1,774,443 $47.9 Million
Q3 2024 Nov 08, 2024	SELL	$19.13 - $26.99 $1.05 Million - $1.48 Million	-54,929 Reduced 3.07%	1,731,916 $45.3 Million
Q2 2024 Aug 08, 2024	SELL	$17.35 - $20.45 $99,346 - $117,096	-5,726 Reduced 0.32%	1,786,845 $35.5 Million
Q1 2024 May 08, 2024	BUY	$17.73 - $26.58 $3.82 Million - $5.72 Million	215,220 Added 13.64%	1,792,571 $34.7 Million
Q4 2023 Feb 09, 2024	BUY	$18.56 - $27.84 $1.34 Million - $2.01 Million	72,211 Added 4.8%	1,577,351 $42.1 Million
Q3 2023 Nov 09, 2023	BUY	$18.88 - $23.55 $2.78 Million - $3.46 Million	147,011 Added 10.82%	1,505,140 $30.6 Million
Q2 2023 Aug 10, 2023	BUY	$18.44 - $23.71 $6.89 Million - $8.85 Million	373,437 Added 37.92%	1,358,129 $27.5 Million
Q1 2023 May 12, 2023	BUY	$20.19 - $32.94 $4.7 Million - $7.67 Million	232,833 Added 30.97%	984,692 $21.1 Million
Q4 2022 Feb 09, 2023	BUY	$29.1 - $35.17 $4.43 Million - $5.35 Million	152,210 Added 25.38%	751,859 $22.7 Million
Q3 2022 Nov 09, 2022	BUY	$28.45 - $32.76 $946,616 - $1.09 Million	33,273 Added 5.87%	599,649 $17.3 Million
Q2 2022 Aug 10, 2022	BUY	$27.3 - $31.39 $15.5 Million - $17.8 Million	566,376 New	566,376 $16.2 Million
Q2 2021 Aug 12, 2021	SELL	$38.3 - $44.63 $17 Million - $19.9 Million	-445,145 Closed	0 $0
Q1 2021 May 13, 2021	BUY	$35.16 - $50.45 $3.89 Million - $5.58 Million	110,538 Added 33.04%	445,145 $19.2 Million
Q4 2020 Feb 09, 2021	BUY	$24.09 - $35.9 $1.74 Million - $2.6 Million	72,426 Added 27.62%	334,607 $12 Million
Q3 2020 Nov 06, 2020	BUY	$23.05 - $31.04 $6.04 Million - $8.14 Million	262,181 New	262,181 $6.25 Million
Q2 2018 Aug 14, 2018	SELL	$40.21 - $44.78 $3.7 Million - $4.12 Million	-91,946 Closed	0 $0
Q1 2018 May 14, 2018	BUY	$40.81 - $46.02 $242,982 - $274,003	5,954 Added 6.92%	91,946 $3.86 Million
Q4 2017 Feb 14, 2018	BUY	$41.46 - $47.25 $1.49 Million - $1.7 Million	35,982 Added 71.95%	85,992 $3.74 Million
Q3 2017 Nov 13, 2017	BUY	$35.86 - $42.48 $1.79 Million - $2.12 Million	50,010	50,010 $2.11 Million

Others Institutions Holding COLB

# of Institutions

421

Shares Held

190M

Call Options Held

207K

Put Options Held

35.9K

View Full List

About COLUMBIA BANKING SYSTEM, INC.

Ticker COLB
Exchange NASDAQ
Sector Financial Services
Industry Banks—Regional
Shares Outstandng 78,646,096
Market Cap $1.99B
Description
Columbia Banking System, Inc. operates as the bank holding company for Columbia State Bank that provides a range of banking services to small and medium-sized businesses, professionals, and individuals in the United States. It offers personal banking products and services, including noninterest and interest-bearing checking, savings, money marke...

More about COLB

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William Blair Investment Management, LLC Columbia Banking System, Inc. Transaction History