Columbia Banking System ($COLB) Insider Trading & Smart Money Activity

Columbia Banking System, Inc. · Banks - Regional · Latest filing Jun 15, 2026

Columbia Banking System, Inc. ($COLB) has 1 insider trade and 2 13F position changes on file. Insiders filed 1 Form 4 transaction in the last 12 months, none of them open-market purchases or sales.

Insider buyers (12 mo): 0
Insider sellers (12 mo): 0
Net insider $ (12 mo): $0
Congress trades (12 mo): 0
13F moves on file: 2
Analyst ratings on file: 0

COLB insider buying and selling by quarter

Quarter	Congress buys / sales	13F added / cut
Q1 2026	0 / 0	0 / 0
Q2 2026	0 / 0	0 / 2
Q3 2026	0 / 0	0 / 0
Q4 2026	0 / 0	0 / 0

Insider buys and sales count open-market trades only (Form 4 codes P and S). Grants, option exercises and tax withholding are left out.

All COLB insider, congress, 13F and analyst activity

Date	Source	Who	Action	Shares	Value / amount	1W	1M	Story
Jun 15, 2026	Insider	Luis Machuca	Buy (Grant or award)	563 sh	$17.89K	-0.3%	+5.2%	—
May 15, 2026	13F	Silvercrest Asset Management Group	Reduced	-159.56K sh	$132.93M	+3.3%	+8.9%	Read
May 15, 2026	13F	Silvercrest Asset Management Group	Reduced	-159.56K sh	$129.86M	+3.3%	+8.9%	Read

1W / 1M / 6M = how COLB moved from the trade or filing date.

Insider trading in COLB: who is buying and selling

Insider	Role	Trades	Open-market net	Shares held	Last trade
Luis Machuca		1	—		Jun 15, 2026

Institutions moving COLB (13F)

Silvercrest Asset Management Group2

Frequently asked questions

What is the latest insider trade in COLB?

Luis Machuca filed a buy (grant or award) of 563 sh worth $17.89K on Jun 15, 2026.

Which institutions changed their COLB positions?

Recent 13F filers moving the stock include Silvercrest Asset Management Group.

Other banks - regional stocks

All stocks Insider cluster buys Top insider purchases Congress 13F institutions

Data comes from public SEC Form 4 and 13F filings and STOCK Act disclosures. Dates are the trade or filing date reported. This page is for research only and is not investment advice.

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