How many insider trades does FilingIQ track for COLB?

FilingIQ tracks 989 Form 4 insider transactions for COLB (COLUMBIA BANKING SYSTEM, INC.), covering filings from Feb 20, 2015 onwards. 67 of those were filed in the last 90 days.

Are COLB insiders net buyers or net sellers?

Across the full Form 4 history for COLB, 78 transactions (8%) were open-market purchases and 27 (3%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.

Where does COLB insider data come from?

Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.

What sector is COLB in?

COLUMBIA BANKING SYSTEM, INC. (COLB) is classified in the Financial Services sector, specifically Banks - Regional, with a current market capitalisation of $8.99B.

COLB insider trading

NasdaqGS Financial Services

COLUMBIA BANKING SYSTEM, INC. — scored insider trade history from SEC Form 4 filings, parsed and contextualised by FilingIQ.

Total Form 4 trades

989

Last 90 days

Buys / sells

8% / 3%

Market cap

$8.99B

About COLUMBIA BANKING SYSTEM, INC.

Columbia Banking System, Inc. operates as the Bank holding company of Columbia Bank that provides banking, private banking, mortgage, and other financial services in the United States. The company offers deposit products, including business, non-interest-bearing checking, interest-bearing checking and savings, and money market; and insured cash sweep and other investment sweep solutions. It also provides commercial lending products, such as commercial lines of credit and term loans, accounts receivable and inventory financing, international trade finance, commercial property loans, multifamily loans, equipment loans, commercial equipment leases, and real estate construction loans; and permanent financing and small business administration program financing, as well as capital markets. In addition, the company offers wealth management comprising financial planning, investment, trust, and insurance; and treasury management, which includes digital and mobile banking solutions, ACH, wires, positive pay, remote deposit capture, integrated payments, integrated receivables, lockbox, cash vault, real-time payments, commercial card, and foreign exchange and international banking related products, as well as merchant services. Further, it provides residential real estate loans and consumer loans. It serves its products to corporate, institutional, small business, and individual customers. The company was founded in 1953 and is based in Tacoma, Washington.

Company website: www.columbiabankingsystem.com

COLB insider activity at a glance

FilingIQ has scored 989 insider transactions for COLB since Feb 20, 2015. The most recent filing in our index is dated Apr 15, 2026.

Across the full history, 78 open-market purchases and 27 open-market sales were filed under transaction codes P and S respectively. Compensatory share awards (code A) and option exercises (code M) are tracked separately and not counted here.

The average FilingIQ composite score on COLB insider trades is 50.6/100, produced by FilingIQ's multi-factor Form 4 model. Model framework documented at methodology.

View live COLB trades on FilingIQ Raw filings on SEC EDGAR

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Frequently asked

How many insider trades does FilingIQ track for COLB?: FilingIQ tracks 989 Form 4 insider transactions for COLB (COLUMBIA BANKING SYSTEM, INC.), covering filings from Feb 20, 2015 onwards. 67 of those were filed in the last 90 days.
Are COLB insiders net buyers or net sellers?: Across the full Form 4 history for COLB, 78 transactions (8%) were open-market purchases and 27 (3%) were open-market sales. Compensatory awards and option exercises are filtered out of these counts.
Where does COLB insider data come from?: Every transaction shown on this page is sourced directly from SEC EDGAR Form 4 filings. FilingIQ parses the raw XML, normalises insider identity across reporting variations, and scores each trade on its multi-factor composite model.
What sector is COLB in?: COLUMBIA BANKING SYSTEM, INC. (COLB) is classified in the Financial Services sector, specifically Banks - Regional, with a current market capitalisation of $8.99B.

Methodology & sources

Every COLB insider transaction shown on FilingIQ is parsed directly from a public SEC Form 4 XML filing. Insider identity is normalised across reporting variants (CIK changes, name spellings, related-party indirect holdings). The FilingIQ composite score is documented in full on the team page and algo disclosure. Not investment advice; see disclaimer.