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SEC EDGAR · Forms 3/4/5Updated through Oct 30, 2026•96 filings

COLB

COLUMBIA BANKING SYSTEM, INC.

No net buying or selling imbalance over the last 3 months

No net buyers or sellers account for the net balance. There is no cluster of three distinct buyers within 30 days. We found no CEO/CFO purchases over 12 months.

How to read this signal

Only open-market P purchases and S sales count toward the signal. Vesting, options, taxes and gifts remain in the source data but do not trigger alerts. Rule 10b5-1 trades are shown as informational.

JSON example

3-month balance

$0.00

0 buyers · 0 sellers

12-month purchases

$22,478

1 distinct insiders

12-month sales

$677,260

5 distinct insiders

Highlighted alerts

6

2 Rule 10b5-1 trades treated as informational

Buying cluster · 30 days

Fewer than three distinct buyers

CEO/CFO purchases · 12 months

No executive purchases found

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Form 4 raw → Raspberry

The value is in what we do not call a signal.

The SEC XML stores every transaction. Raspberry keeps that evidence, reads the footnotes and separates voluntary open-market activity from vesting, option exercises, gifts, tax withholding, stock purchase and dividend reinvestment plans and pre-programmed 10b5-1 trades.

100
Raw transactions
Everything returned by the filing
8
Voluntary view
P/S trades after deterministic checks
93
Administrative noise
Stored, never alerted
2
10b5-1
Shown as informational
SEC ownership XML facts
Code
A
Shares
594
Price
$30.48
Footnotes
1

The deferred compensation plan phantom stock was accrued under the Registrant's deferred compensation plan and will be settled in accordance with the terms of the deferred compensation plan following the reporting person's cessation of service as a director of the Registrant.

Raspberry interpretation
Informational — no alert

Reason: administrative_code.

Verify in SEC EDGAR

Recent transactions

Voluntary purchases and sales; administrative noise stays hidden.

8 transactions

Deer Aaron James

EVP Chief Strategy/Innov Offcr

PurchaseAlert
Shares
886
Price
$25.37
Value
$22,478
Open SEC filing

Moore Devine David

EVP Chief Marketing Officer

SaleAlert
Shares
3,812
Price
$29.78
Value
$113,502
Open SEC filing

Moore Devine David

EVP Chief Marketing Officer

SaleAlert
Shares
60
Price
$29.77
Value
$1,786
Open SEC filing

Lakely Brock

EVP, Chief Accounting Officer

SaleAlert
Shares
211
Price
$26.23
Value
$5,535
Open SEC filing

BARUFFI KUMI YAMAMOTO

EVP General Counsel, Corp Sec

SaleAlert
Shares
937
Price
$26.23
Value
$24,578
Open SEC filing

Nixon Torran B

Senior Executive VP

Sale 10b5-1
Shares
2,240
Price
$28.85
Value
$64,624
Open SEC filing

Nixon Torran B

Senior Executive VP

Sale 10b5-1
Shares
2,241
Price
$28.25
Value
$63,308
Open SEC filing

GARDNER STEVEN R

Director

SaleAlert
Shares
13,725
Price
$29.43
Value
$403,927
Open SEC filing

“Alert” means a voluntary, unscheduled transaction according to the filing; it is not an investment recommendation. Official source: SEC EDGAR.