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8-K ·Filed Jul 30, 2026

COLB

COLUMBIA BANKING SYSTEM, INC.
NEUTRAL
Impact 2/10
Horizonimmediate Processed2mo ago SEC0000887343-26-000167
8-K context-dependent: Items 5.02, 7.01
Actionable Insight • Neutral

This is a routine board appointment with no immediate trading signal. Monitor for any future strategic shifts or M&A commentary from the new director, but no near-term catalyst expected.

DirectionNeutral
Confidencehigh
Horizonimmediate
Final — all horizons settled through T+60d
COLB ▼ -0.67% at T+60d
NEUTRAL call -0.67% · α vs SPY -3.13% · entry $31.27 → $31.06
Entry = T+0 close
Jul 30, 2026
via day close
T+1d
+0.74%
call +0.74% · α -0.69%
$31.50
settled 3mo ago
T+5d
-0.10%
call -0.10% · α -3.61%
$31.24
settled 3mo ago
T+20d
-3.84%
call -3.84% · α -6.83%
$30.07
settled 2mo ago
T+60d
-0.67%
call -0.67% · α -3.13%
$31.06
settled 4d ago

Price Chart

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Executive Summary

Columbia Banking System appointed Simone Lagomarsino to its Board of Directors, effective September 1, 2026. Ms. Lagomarsino is a veteran banking executive with prior CEO roles at Luther Burbank Corporation and Heritage Oaks Bancorp, and most recently served as President of First Foundation Inc. until its sale. The appointment is a routine board refresh with no material financial implications.

Key Facts

  • Simone Lagomarsino appointed to the Board of Directors effective September 1, 2026
  • Will serve on Audit Committee and Enterprise Risk Management Committee
  • Annual cash retainer of $95,000 and annual equity retainer of $115,000 (prorated for partial year)
  • Ms. Lagomarsino receives $100,000 annual deferred compensation payments from a prior acquisition (Heritage Oaks Bank) through 2032
  • No arrangements or family relationships with existing directors or officers

Financial Impact

No material financial impact; director compensation is standard and immaterial relative to company size.

Risk Factors

  • No material risks identified from this filing

Market Snapshot

Exchange
Nasdaq
Sector
State Commercial Banks
Analyst Consensus
47% bullish (19 analysts)

Investment Themes

Traditional Finance

Documents Analyzed

This report is based on 5 SEC documents filed with EDGAR.

DocumentAccession Number
8-K Filing (Primary)0000887343-26-000167
Document: colbex991q32026boardofdire.htm0000887343-26-000167
Document: 0000887343-26-000167-index-headers.html0000887343-26-000167
Document: 0000887343-26-000167-index.html0000887343-26-000167
Document: 0000887343-26-000167.txt0000887343-26-000167
9 reports for COLB
Performance horizon
67% Hit rate @ T+1 2 of 3 directional calls Went positive at some point 2 of 3 best @ T+1▲ +3.23%Oct 21, 2026
Filters
Rows
Reports for COLB — sortable, filterable
TypeNow
Oct 22, 2026
4d ago
8-K
BULLISH ★ 6/10
$30.86 $31.06▲ +0.66%▼ −0.05%$31.06 (+0.66%)
Oct 21, 2026
5d ago
Institutional Cluster
BULLISH ★ 4/10
$29.89 $30.86▲ +3.23%▲ +3.75%$31.06 (+3.91%)
Sep 30, 2026
26d ago
8-K
NEUTRAL ★ 2/10
$28.73 $28.92▲ +0.66%▼ −0.08%$31.06 (+8.11%)
Aug 21, 2026
9w ago
Institutional Cluster
MIXED ★ 5/10
$30.81 $30.64▼ −0.55%▼ −0.26%$31.06 (+0.81%)
Jul 30, 2026
12w ago
8-K
NEUTRAL ★ 2/10
$31.27 $31.50▲ +0.74%▼ −0.69%$31.06 (−0.67%)
Jun 24, 2026
17w ago
Institutional Cluster
MIXED ★ 5/10
$31.53 $32.07▲ +1.71%▲ +1.57%$31.06 (−1.49%)
Jun 11, 2026
19w ago
Institutional Cluster
NEUTRAL ★ 3/10
$30.82 $31.31▲ +1.59%▲ +1.05%$31.06 (+0.78%)
May 15, 2026
23w ago
8-K
NEUTRAL ★ 3/10
$28.77 $29.01▲ +0.83%▲ +0.90%$31.06 (+7.96%)
Apr 23, 2026
26w ago
8-K
BEARISH ★ 7/10
$29.22 $29.85▼ −2.16%▼ −1.99%$31.06 (−6.30%)
Showing 9 of 9

US Market Status

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Report published Jul 30, 2026