SEC filingsOct 12, 2026 to Oct 19, 2026: insiders reported 840 purchases and sales across 212 companies.840 insider purchases and sales in 7 daysSee the filings →
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Company profile

COLB

Columbia Banking System, Inc.
NASDAQFinancials

Latest close: 28.44 USD · Oct 16, 2026 · 1 year · split-adjusted

On the price, the facts of the public record■Insider buy□Insider sell●Results filed
With an account, also○dividends▲splits◌next earningswith an account

End-of-day prices provided by Twelve Data · One close per session; the series does not update during the trading day.

Latest on record

The most recent facts, as filed.

Up to three of the most recent, checkable facts already loaded on this page, each linked to its source.

  1. Sep 30, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
  2. Aug 14, 2026Material event · 8-KFiled by the company itself.Open the filing ↗
  3. Aug 4, 2026Quarterly report · 10-QFiled by the company itself.Open the filing ↗

In numbers

What this profile holds, counted.

Closes · 1 year250
SEC filings on record1,7308 flagged findings
Reported transactions (Form 4)80since Feb 25, 2025 · and 25 other holdings
Corporate events (8-K)30since May 4, 2018

What the record says

Description, identity and filings, each with its source.

Every block cites its source. The colour of a finding marks its category — which document, who filed it — not how much it matters.

SEC topics

Regulatory history

Topics detected in its SEC reports, with the original excerpt.

Each topic is assigned by a classifier over the full filing; the excerpts show where it was detected and are not always enough to verify it. Open the filing to read it in full.

  • 2026-05-05capital return (buybacks/dividends)recentOpen filing ↗
    “…the weighted average outstanding restricted stock awards and restricted stock units excluded from the calculation of diluted…”
    +1 more passage from the same document
    • “…from the calculation of diluted earnings per share because their effect would have been anti-dilutive for the periods indicated:…”
  • 2026-05-05bank capital and credit cost contextrecentOpen filing ↗
    “…and interest-bearing deposits 14 16 Total interest income 816 648 INTEREST EXPENSE Interest on deposits 184 177 Interest on…”
    +1 more passage from the same document
    • “…income 816 648 INTEREST EXPENSE Interest on deposits 184 177 Interest on securities sold under agreement to repurchase and federal…”

Original excerpts from SEC filings, untranslated. Not advice and not a prediction.

SEC record

SEC dossier

What this company has filed with the SEC, in plain language.

The 25 most recent filings (of 1,730)

Everything filed

Every SEC filing, newest first, with what it is. Below, each type with its own explanation.

  • Sep 30, 268-K ↗Current report · Communication to the market
  • Insider transaction · 3 Form 4 filingsshow all 3hide
  • Sep 2, 26Form 3 ↗Insider transaction
  • Aug 18, 26Form 4 ↗Insider transaction
  • Aug 14, 268-K ↗Current report · Other events
  • Aug 13, 26SCHEDULE 13G/A ↗Passive stake · Wellington Management Group LLP · 4.1% · event on Jun 30, 26 · amendment
  • Aug 4, 2610-Q ↗Quarterly report
  • Jul 30, 268-K ↗Current report · A senior executive left or was appointed
  • Jul 23, 268-K ↗Current report · Results · Communication to the market
  • Jul 2, 26Form 4 ↗Insider transaction
  • Jul 1, 268-K ↗Current report · Communication to the market
  • Insider transaction · 2 Form 4 filingsshow all 2hide
  • Jun 8, 26Form 144 ↗Notice of proposed sale
  • Insider transaction · 9 Form 4 filingsshow all 9hide

1,730 filings on record, the oldest from May 22, 96.

Listing the 25 most recent filings of the 1,730 on record.

8-Ks, explained

Structure32Governance55
  • Governance3 senior executive changes2025 – 2026show all 3hide
    • Jul 30, 26GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
    • Nov 21, 25GovernanceA senior executive left or was appointed8-K 5.02 ↗
    • Nov 4, 25GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
  • Sep 2, 25StructureCompleted an acquisition or disposal+3 more in the same filing8-K 2.01 ↗
  • Apr 25, 25StructureEntered a material agreement+1 more in the same filing8-K 1.01 ↗
  • Apr 2, 25GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
  • May 9, 24GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
  • Mar 1, 23StructureCompleted an acquisition or disposal+5 more in the same filing8-K 2.01 ↗
  • Jan 10, 23StructureEntered a material agreement+2 more in the same filing8-K 1.01 ↗
  • Jan 6, 23GovernanceA senior executive left or was appointed8-K 5.02 ↗
  • Oct 15, 21StructureEntered a material agreement+2 more in the same filing8-K 1.01 ↗
  • Jun 24, 21StructureEntered a material agreement+2 more in the same filing8-K 1.01 ↗
  • Governance14 senior executive changes2018 – 2020show all 14hide
    • Dec 28, 20GovernanceA senior executive left or was appointed8-K 5.02 ↗
    • Dec 1, 20GovernanceA senior executive left or was appointed8-K 5.02 ↗
    • May 8, 20GovernanceA senior executive left or was appointed8-K 5.02 ↗
    • Apr 13, 20GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
    • Mar 18, 20GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • Feb 28, 20GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • Jan 7, 20GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • Oct 3, 19GovernanceA senior executive left or was appointed+2 more in the same filing8-K 5.02 ↗
    • May 29, 19GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • Dec 14, 18GovernanceA senior executive left or was appointed8-K 5.02 ↗
    • Jul 31, 18GovernanceA senior executive left or was appointed8-K 5.02 ↗
    • Jun 8, 18GovernanceA senior executive left or was appointed8-K 5.02 ↗
    • May 7, 18GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗
    • May 4, 18GovernanceA senior executive left or was appointed+1 more in the same filing8-K 5.02 ↗

The record reaches back to Oct 4, 04.

Corporate events are tracked from 2004-08-23, when the SEC renumbered 8-K items. Earlier filings use an incompatible numbering and are not classified here.

Ownership and control

Schedule 13G: short-form filing

The short form, for holders who meet specific requirements: institutional investors, passive investors without a control purpose, or exempt investors. Asset managers and index funds usually file it.

  • Vanguard Capital Management5.2%Mar 31, 26SCHEDULE 13G ↗
  • STATE STREET CORPORATION4.8%Mar 31, 25SCHEDULE 13G ↗1 earlier filing
  • Wellington Management Group LLP4.1%Jun 30, 26SCHEDULE 13G/A ↗3 co-filers on this document — the figure is the largest single stake, not their sum. · 1 earlier filing

Structured 13D/G data starts 2023-12, when the SEC moved these filings to a machine-readable format. Earlier filings exist but are not parsed here.

SEC record

Insider transactions

Buys and sells reported by officers, directors and major shareholders on SEC Form 4.

Buys and sells

  • Jun 30, 26Buy$22KAaron James DeerEVP Chief Strategy/Innov Offcr↗
  • Jun 8, 26Sell$2KDevine David MooreEVP Chief Marketing Officer↗
  • Jun 8, 26Sell$114KDevine David MooreEVP Chief Marketing Officer↗
  • Mar 13, 26Sell$25KKUMI YAMAMOTO BARUFFIEVP General Counsel, Corp Sec↗
  • Mar 13, 26Sell$6KBrock LakelyEVP, Chief Accounting Officer↗
Stock compensation, tax and giftsshow the 35 other transactionshide

Stock compensation, tax withholding, option exercises and gifts. They are listed separately and are not included in the purchase and sale totals. The type describes the transaction, not the filer's intent.

  • Sep 4, 26Compensationamount n/aSTEVEN R GARDNER↗
  • Sep 2, 26Compensationamount n/aSIMONE LAGOMARSINO↗
  • Aug 14, 26Compensation$78KJudi GiemEVP CHRO↗
  • Aug 14, 26Tax$21KJudi GiemEVP CHRO↗
  • May 14, 26Compensationamount n/aJOHN F SCHULTZ↗
  • May 14, 26Compensationamount n/aAnddria Varnado↗
  • May 14, 26Compensationamount n/aLUIS MACHUCA↗
  • May 14, 26Compensationamount n/aJAYNIE M STUDENMUND↗
  • May 14, 26Compensationamount n/aM CHRISTIAN MITCHELL↗
  • May 14, 26Compensationamount n/aHilliard C. Terry III↗
  • May 14, 26Compensationamount n/aMark A Finkelstein↗
  • May 14, 26Compensationamount n/aELIZABETH WHITEHEAD SEATON↗
  • May 14, 26Compensationamount n/aEric Forrest↗
  • May 14, 26Compensationamount n/aRandal Lee Lund↗
  • Apr 15, 26Tax$12KBrock LakelyEVP, Chief Accounting Officer↗
  • Mar 13, 26Compensation$477KClint SteinChair, CEO, President↗
  • Mar 13, 26Tax$188KClint SteinChair, CEO, President↗
  • Mar 13, 26Compensation$62KANDREW H OGNALLEVP Chief Risk Officer↗
  • Mar 13, 26Tax$25KANDREW H OGNALLEVP Chief Risk Officer↗
  • Mar 13, 26Compensation$62KKUMI YAMAMOTO BARUFFIEVP General Counsel, Corp Sec↗
  • Mar 13, 26Compensation$131KTorran B NixonSenior Executive VP↗
  • Mar 13, 26Tax$53KTorran B NixonSenior Executive VP↗
  • Mar 13, 26Compensation$22KBrock LakelyEVP, Chief Accounting Officer↗
  • Mar 13, 26Compensation$74KFrank NamdarEVP Chief Credit Officer↗
  • Mar 13, 26Tax$36KFrank NamdarEVP Chief Credit Officer↗
  • Mar 13, 26Compensation$131KChristopher MerrywellSenior Executive VP↗
  • Mar 13, 26Tax$52KChristopher MerrywellSenior Executive VP↗
  • Mar 13, 26Compensation$25KDevine David MooreEVP Chief Marketing Officer↗
  • Mar 13, 26Tax$10KDevine David MooreEVP Chief Marketing Officer↗
  • Mar 13, 26Compensation$41KAaron James DeerEVP Chief Strategy/Innov Offcr↗
  • Mar 13, 26Tax$16KAaron James DeerEVP Chief Strategy/Innov Offcr↗
  • Mar 13, 26Compensation$66KDrew K AndersonEVP Chief Admin Officer↗
  • Mar 13, 26Tax$32KDrew K AndersonEVP Chief Admin Officer↗
  • Mar 13, 26Tax$6KBrock LakelyEVP, Chief Accounting Officer↗
  • Mar 13, 26Tax$25KKUMI YAMAMOTO BARUFFIEVP General Counsel, Corp Sec↗

The full record holds 514 transactions and goes back to Dec 30, 22.

Its sector and its market

Columbia Banking System, Inc. among Financials companies

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Coverage

What sits behind this page.

Where each figure comes from and how far it reaches.

Prices
End-of-day closes provided by Twelve Data. One close per session; not real time. Closes adjusted for splits.
Series quality
250 clean closes in the period.
SEC records
1,730 documents on file, from May 22, 1996 to Sep 30, 2026.
Company description
No description available.
This page
Generated on Oct 19, 2026; refreshed through the day.

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No. It is one close per session, from the provider and with the date shown on the profile; it does not update during the trading day.

Which SEC documents appear here?

Those filed with the SEC by the company, its insiders and its major shareholders, within our coverage: periodic reports (10-K, 10-Q, 20-F), material events (8-K), proposed sale notices (Form 144), insider transactions (Form 4) and stakes above 5% (13D/13G). Each links to the original on EDGAR.

Why does a European company show no SEC records?

It depends on the company: some European issuers file a 20-F or 6-K with the SEC and others don't. The profile shows whatever is on record; when there is nothing, it says so rather than guessing why. Europe does not yet have a common filing archive like EDGAR in the United States. The EU will open its own, ESAP, in July 2027 (managers' transactions arrive in January 2028), and we plan to add it once it is available.

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