COLUMBIA BANKING SYSTEM, INC.

COLBNASDAQ

$28.89+0.05 (+0.17%)as of Oct 6, 2026

Legend

Insider buy

Insider sell

Congress buy

Congress sell

Hedge Funds
bought vs soldGreener markers show more buyers; redder markers show more sellers.

Company share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size.

Insider buy
Insider sell
Congress buy
Congress sell
Hedge Funds bought vs sold

Share activityNet buybacksNo changeNet dilution

Marker size reflects transaction size. Greener fund markers mean more buyers.

Insider Buy
Insider Sell
Congress Buy
Congress Sell
Hedge funds bought vs sold
BuybackNo changeNet dilution

COLUMBIA BANKING SYSTEM, INC. price and activity chart data

Showing the 1Y range: Oct 6, 2025 to Oct 6, 2026. Price (+8.7%). 0 insider or congressional trades plotted in this window as 0 markers; nearby trades of the same kind are grouped.

Transactions plotted on the price chart
Date	Category	Person	Role	Action	Amount	Change in holding

Largest institutional holders

13F · Q2 2026

Fund	% of company held	Value	% of portfolio	Quarterly activity
BlackRock, Inc.	9.71%	$880M	0.01%	Not reported
T. Rowe Price Investment Management, Inc.	5.53%	$501M	0.33%	Reduce 1.77%
Dimensional Fund Advisors LP	4.92%	$446M	0.08%	Not reported
Vanguard Portfolio Management LLC	4.84%	$438M	0.02%	Not reported
Vanguard Capital Management LLC	4.62%	$419M	0.01%	Not reported
State Street Corp	4.49%	$407M	0.01%	Not reported
Wellington Management Group LLP	4.13%	$375M	0.06%	Reduce 21.80%
Charles Schwab Investment Management Inc	3.90%	$353M	0.05%	Not reported
American Century Companies Inc	2.79%	$253M	0.11%	Not reported
Massachusetts Financial Services Co	2.11%	$193M	0.06%	Reduce 1.09%
Geode Capital Management, LLC	2.05%	$186M	0.01%	Not reported
HoldCo Asset Management, LP	2.02%	$183M	11.77%	Not reported
Invesco Ltd.	1.66%	$150M	0.01%	Not reported
Silvercrest Asset Management Group LLC	1.42%	$128M	0.84%	Reduce 3.42%
Morgan Stanley	1.35%	$122M	0.01%	Not reported
Nomura Asset Management International Inc.	1.35%	$122M	0.18%	Reduce 2.39%
Bank of New York Mellon Corp	1.33%	$121M	0.02%	Not reported
Mackenzie Financial Corp	1.12%	$102M	0.10%	Not reported
Epoch Investment Partners, Inc.	1.11%	$101M	0.57%	Add 24.19%
Norges Bank	1.05%	$95.1M	0.01%	Not reported
UBS Group AG	0.93%	$84.5M	0.01%	Not reported
Northern Trust Corp	0.92%	$83.7M	0.01%	Not reported
Goldman Sachs Group Inc	0.91%	$82.4M	0.01%	Not reported
Fisher Asset Management, LLC	0.88%	$79.5M	0.02%	Add 6.88%
Manufacturers Life Insurance Company, the	0.76%	$68.9M	0.05%	Not reported
Pzena Investment Management LLC	0.75%	$68.2M	0.20%	Add 4.73%
First Trust Advisors LP	0.70%	$63.4M	0.04%	Add 64.49%
Vanguard Fiduciary Trust Co	0.65%	$58.7M	0.01%	Not reported
Vaughan Nelson Investment Management, L.P.	0.61%	$54.9M	0.49%	Add 39.00%
Cooke & Bieler LP	0.53%	$48.1M	0.56%	Reduce 30.27%
Bank of America Corp	0.50%	$45.1M	0.00%	Not reported
Quantinno Capital Management LP	0.47%	$42.4M	0.05%	Add 24.10%
Systematic Financial Management LP	0.46%	$41.3M	0.82%	Reduce 3.88%
BNP PARIBAS ASSET MANAGEMENT Holding S.A.	0.41%	$37.5M	0.04%	Reduce 0.61%
JPMorgan Chase & Co	0.39%	$36M	0.00%	Not reported
Stieven Capital Advisors, L.P.	0.38%	$34.3M	6.56%	Reduce 9.62%
Azora Capital LP	0.36%	$33M	1.39%	New Not reported
Raymond James Financial Inc	0.36%	$32.5M	0.01%	Not reported
LSV Asset Management	0.35%	$31.4M	0.06%	Not reported
Balyasny Asset Management L.P.	0.32%	$29.3M	0.04%	Not reported
D. E. Shaw & Co., Inc.	0.32%	$28.8M	0.01%	Not reported
Easterly Investment Partners LLC	0.31%	$28.3M	1.44%	Add 21.87%
Leeward Investments, LLC - MA	0.30%	$27.6M	1.26%	Reduce 2.16%
UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC	0.30%	$27M	0.00%	Not reported
Ameriprise Financial Inc	0.29%	$26.6M	0.01%	Not reported
Interval Partners, LP	0.28%	$25.1M	0.65%	Add 117.56%
Jane Street Group, LLC	0.27%	$24.8M	0.00%	Not reported
First Eagle Investment Management, LLC	0.27%	$24.7M	0.02%	Add 235.90%
Snyder Capital Management L P	0.27%	$24.6M	0.43%	Add 20.82%
Nuveen, LLC	0.27%	$24.1M	0.01%	Not reported

50 of 518 holders

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